Oil splashing prevention device for guide bearing of hydraulic generator

Abstract

The invention discloses an oil splashing prevention device for a guide bearing of a hydro-generator, and belongs to the technical field of hydro-generators. The problems that in the prior art, an oil splashing prevention device is large in occupied space and not easy to overhaul are solved. According to the technical scheme, a screw hole is formed in the top of a guide shoe, a screw is connected with the screw hole, a supporting cylinder is sleeved on the outer side of the screw, and an oil baffle plate and a spring washer sequentially penetrate through the screw and a nut to flatten the spring washer; the bottom of the oil baffle abuts against the top of the supporting cylinder. The inner diameter of the oil baffle plate is smaller than that of the guide shoe. The oil baffle plate is directly fixed on the upper side of the guide shoe, and a special closing position does not need to be arranged in the oil groove; the structure is simple, the occupied space is small, bearing core components do not need to be disassembled during installation, and rapid installation or adjustment can be achieved during unit maintenance; the sealing device does not make contact with a rotating part, the risk of abrasion, heating or axial surface scratching is avoided, extra power such as an air source and a power source is not needed, potential safety hazards of contact type sealing and energy consumption of active sealing are avoided, and long-term operation stability is high.

Description

Technical Field

[0001] This invention relates to the field of hydro-generator technology, specifically to a device for preventing oil splashing onto the guide bearing of a hydro-generator. Background Technology

[0002] During the operation of the guide bearing of a hydro-generator set, oil splashes out between the guide bearing and the sliding rotor. The resulting bearing oil mist will deteriorate the operating environment of the generator and affect its safe and stable operation. Over the years, various hydro-generator manufacturers have taken a variety of measures to prevent the generation of oil mist in hydro-generator bearings. One common measure is to install an oil baffle plate inside the bearing oil groove to prevent oil splashing from the guide bearing.

[0003] Setting up an oil baffle can suppress oil splashing, reduce oil mist generation, and regulate the oil flow direction in the oil trough, preventing local oil stagnation or turbulence, ensuring that the lubricating oil can quickly flow back to the cooler or bearing working surface, and maintaining stable oil circulation; no complex mechanical structure or control system is required.

[0004] However, there are certain limitations to installing oil baffles. Some units have limited space, and oil baffles cannot be installed in the oil tank. The installation position and size of the oil baffles are incompatible. If the position is too close, it is easy to interfere with rotating parts. If the size is too large or the arrangement is too dense, it will compress the internal space, resulting in poor oil flow and local heat accumulation, which will aggravate oil mist evaporation. At the same time, the oil baffles need to be removed when inspecting the guide bearings and adjusting and measuring the bearing gap, which is not convenient for maintenance.

[0005] Therefore, there is an urgent need to propose an anti-splashing oil device for the guide bearing of a hydro-generator to solve the problems of large space occupation and difficulty in maintenance of existing anti-splashing oil devices. Summary of the Invention

[0006] In view of the above facts, in order to solve the problems of large space occupation and difficulty in maintenance of the oil splash prevention device in the prior art, the present invention further designed an oil splash prevention device for the guide bearing of a hydro generator.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An oil splash prevention device for a guide bearing of a hydro generator includes a screw, a support cylinder, an oil baffle, a spring washer, and a nut;

[0009] The top of the guide plate is provided with a screw hole, the screw rod is connected to the screw hole, the support cylinder is fitted on the outside of the screw rod, the oil baffle and spring washer pass through the screw rod in sequence, and the nut presses the spring washer flat.

[0010] Furthermore: the bottom of the oil baffle plate abuts against the top of the supporting cylinder.

[0011] Furthermore, the inner diameter of the oil baffle is smaller than the inner diameter of the guide plate.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. In this invention, the oil baffle is directly fixed to the upper side of the guide plate, eliminating the need for a dedicated engagement position in the oil trough.

[0014] 2. The present invention has a simple structure, occupies little space, and does not require disassembly of the core bearing components for installation. It can be quickly added or adjusted during unit maintenance.

[0015] 3. During maintenance, the oil baffle and guide plate can be removed together.

[0016] 4. This invention does not come into contact with rotating parts, thus avoiding the risk of wear, heat generation, or scratches on the shaft surface. It requires no additional power sources such as air or electricity, avoiding the safety hazards of contact seals and the energy consumption of active seals, and has strong long-term operational stability. Attached Figure Description

[0017] Figure 1 This is a general structural diagram of the present invention.

[0018] In the diagram: 1-Screw, 2-Support cylinder, 3-Oil baffle, 4-Spring washer, 5-Nut, 6-Screw hole, 7-Guide pad. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] The terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] Example 1: Reference Figure 1This embodiment describes a water turbine generator guide bearing anti-splashing oil device, which includes a screw 1, a support cylinder 2, an oil baffle 3, a spring washer 4, and a nut 5.

[0024] The top of the guide plate 7 is provided with a screw hole 6. The screw rod 1 is screwed to the screw hole 6. The support cylinder 2 is fitted on the outside of the screw rod 1. The oil baffle 3 and the spring washer 4 pass through the screw rod 1 in sequence. The nut 5 flattens the spring washer to fix the oil baffle 3.

[0025] More specifically: the bottom of the oil baffle 3 abuts against the top of the supporting cylinder 2.

[0026] More specifically: the inner diameter of the oil baffle 3 is smaller than the inner diameter of the guide tile 7, which effectively prevents oil splashing and suppresses the generation of oil mist.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; as long as there is no structural conflict, the various features in the specific embodiments disclosed in this application can be combined with each other in any way, and will not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for preventing oil splashing on the guide bearing of a hydro-generator, characterized in that, Includes screw (1), support cylinder (2), oil baffle (3), spring washer (4), and nut (5); The guide plate (7) is provided with a screw hole (6) at the top. The screw rod (1) is connected to the screw hole (6). The support cylinder (2) is fitted on the outside of the screw rod (1). The oil baffle (3) and the spring washer (4) pass through the screw rod (1) in sequence. The nut (5) flattens the spring washer.

2. The anti-splash oil device for the guide bearing of a hydro-generator according to claim 1, characterized in that, The bottom of the oil baffle (3) abuts against the top of the supporting cylinder (2).

3. The anti-splash oil device for the guide bearing of a hydro-generator according to claim 1, characterized in that, The inner diameter of the oil baffle (3) is smaller than the inner diameter of the guide tile (7).

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