Mechanical structure of vertical water turbine generator outer pump cooling thrust oil groove control oil circuit

Abstract

The utility model discloses a mechanical structure of vertical water turbine generator additional pump cooling thrust oil tank control oil circuit relates to water turbine generator technical field. The oil provided for the thrust pad is the mixed oil mixed with the cold oil and hot oil in the oil tank, not the cold oil simply, owing to the insufficient definite oil circuit of unit, and this leads to the temperature of thrust pad higher. The utility model discloses thrust oil tank, oil baffle, upper oil baffle, the left side end of oil baffle is closed to the lower end of thrust oil tank, and the right side upper end of oil baffle is provided with the insulating board and thrust pad, and the oil inlet passage is formed between oil baffle and thrust oil tank, shell, thrust pad, and the left side of upper oil baffle is closed to the upper end of thrust oil tank, and the right side of upper oil baffle is close to mirror plate, and the oil discharge passage is formed between upper oil baffle and thrust oil tank, oil baffle, mirror plate. The utility model discloses can be according to the height adjustment corresponding component position of thrust support part, and the oil circuit of thrust oil tank of this structure is definite, and has obvious effect for adjusting the thrust pad temperature.

Description

Technical Field

[0001] This utility model relates to the field of hydro-generator technology, and in particular to the mechanical structure of the control oil circuit of the external pump cooling thrust oil tank of a vertical hydro-generator. Background Technology

[0002] In the field of hydroelectric generators, the thrust oil tanks of giant units are extremely large, placing higher demands on the oil tank circuitry. In some units, due to insufficiently defined oil circuitry, the oil supplied to the thrust bearings is a mixture of cold and hot oil from the oil tank, rather than simply cold oil. This results in higher thrust bearing temperatures, especially if this problem exists after the thrust bearings have already been installed and the oil tanks have been filled, making the project timeline even tighter. Utility Model Content

[0003] The purpose of this invention is to overcome the problem that the oil supplied to the thrust bearing is a mixture of cold and hot oil in the oil tank, rather than simply cold oil, which leads to a high temperature of the thrust bearing. This invention provides a mechanical structure for cooling the thrust oil tank control oil circuit of a vertical hydro generator with an external pump.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] The mechanical structure of the control oil circuit for the external pump cooling thrust oil tank of a vertical hydro generator includes: a thrust oil tank, an L-shaped oil baffle plate, an upper oil baffle plate, and an oil tank cover. The bottom end of the thrust oil tank is mounted on the housing, and the top end of the thrust oil tank forms a sealed space with the thrust head through the oil tank cover. The left end of the L-shaped oil baffle plate is mounted to the lower end of the thrust oil tank through a first support seat. An insulating plate is provided on the upper right end of the L-shaped oil baffle plate, close to the thrust bearing with a gap. The left end of the upper oil baffle plate is mounted to the thrust oil tank through a second support seat. At the end, a gap is left between the right side of the upper oil baffle plate and the mirror plate. A pipe assembly is provided between the L-shaped oil baffle plate and the upper oil baffle plate. An oil inlet is provided at the lower part of the thrust oil groove, and an oil outlet is provided at the upper part of the thrust oil groove. An oil inlet passage is formed between the L-shaped oil baffle plate, the thrust oil groove, the housing, and the thrust bearing. An oil outlet passage is formed between the upper oil baffle plate, the oil baffle plate, the mirror plate, and the thrust oil groove. A residual oil collection groove is formed between the thrust oil groove, the upper oil baffle plate, the oil groove cover, and the thrust head. The residual oil collection groove is connected to the oil inlet passage through the pipe assembly.

[0006] Furthermore, an oil distribution plate is provided between the first support base and the housing, and the oil distribution plate has evenly distributed openings.

[0007] Furthermore, the L-shaped oil separator is mounted on the housing via a support assembly.

[0008] Furthermore, a pad is provided at the junction of the upper oil baffle and the second support seat.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention allows for a clearer oil path within the thrust oil groove, enabling the thrust bearing to contact the cold oil to the maximum extent, ensuring that the bearing temperature does not exceed the limit value, and significantly improving the temperature adjustment of the thrust bearing.

[0011] Specifically:

[0012] 1. The oil separator and upper oil baffle in this utility model can be attached to the thrust oil groove for easy disassembly and assembly;

[0013] 2. The insulating plate and upper oil baffle plate in this utility model have a significant promoting effect on the stability of the thrust oil tank liquid level and can effectively reduce the generation of oil mist;

[0014] 3. This utility model is applicable to solving the problem of considering the thrust oil tank circuit during the design process of units that have not yet been put into operation;

[0015] 4. This utility model has a simple structure and principle, low processing cost, and is easy to install, inspect and maintain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a diagram showing the usage state of this utility model.

[0018] In the diagram, 1-thrust oil tank; 2-L-shaped oil baffle plate; 3-oil distribution plate; 4-pipe assembly; 5-support assembly; 6-insulation plate; 7-upper oil baffle plate; 8-pad plate; 9-oil inlet; 10-oil outlet; 11-oil tank cover; 12-shell; 13-thrust bearing; 14-mirror plate; 15-thrust head; 16-residual oil collection tank. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0020] Example:

[0021] like Figure 1-2As shown, this embodiment provides a mechanical structure for the control oil circuit of the external pump cooling thrust oil tank of a vertical hydro generator, including a thrust oil tank 1, an L-shaped oil baffle 2, an upper oil baffle 7, and an oil tank cover 11. The bottom end of the thrust oil tank 1 is mounted on the housing 12, and the top end of the thrust oil tank 1 is close to the thrust head 15 through the oil tank cover 11 to form a sealed space. The left end of the L-shaped oil baffle 2 is mounted to the lower end of the thrust oil tank 1 through a first support seat. An insulating plate 6 is provided on the upper right end of the L-shaped oil baffle 2, which is close to the thrust bearing 13 with a gap. The left end of the upper oil baffle 7 is mounted to the upper end of the thrust oil tank 1 through a second support seat. The upper oil baffle 7 has a gap on its right side close to the mirror plate 14. A pipe assembly 4 is provided between the L-shaped oil baffle 2 and the upper oil baffle 7. An oil inlet 9 is provided at the lower part of the thrust oil groove 1, and an oil outlet 10 is provided at the upper part of the thrust oil groove 1. An oil inlet passage is formed between the L-shaped oil baffle 2, the thrust oil groove 1, the housing 12, and the thrust bearing 13. An oil outlet passage is formed between the upper oil baffle 7, the oil baffle 2, the mirror plate 14, and the thrust oil groove 1. A residual oil collection groove 16 is formed between the thrust oil groove 1, the upper oil baffle 7, the oil groove cover 11, and the thrust head 15. The residual oil collection groove 16 is connected to the oil inlet passage through the pipe assembly 4.

[0022] Specifically, an oil distribution plate 3 is provided between the first support base and the housing 12, and the oil distribution plate 3 has evenly distributed openings.

[0023] Specifically, the L-shaped oil separator 2 is mounted on the housing 12 via the support assembly 5.

[0024] Specifically, a pad 8 is provided at the junction of the upper oil baffle 7 and the second support seat.

[0025] Specifically, the L-shaped oil baffle 2 and the upper oil baffle 7 must be installed horizontally.

[0026] In this embodiment, cooling oil is injected from the oil inlet 9, passes through the hole in the oil separator 3, and enters evenly into the oil inlet passage formed between the L-shaped oil separator 2, the thrust oil groove 1, the housing 12, and the thrust bearing 13. After the cooling oil flows through the thrust bearing 13 and its temperature rises to become hot oil, it is discharged from the oil groove through the oil discharge passage formed between the oil plate 7, the thrust oil groove 1, the oil separator 2, and the mirror plate 14. When the thrust bearing is running, some oil mist will enter the residual oil collection tank 16 from the gap between the upper oil baffle 7 and the mirror plate 14. When the oil level in the residual oil collection tank 16 rises, it enters the oil inlet passage through the pipe assembly 4.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. The mechanical structure of the external pump cooling thrust oil tank control oil circuit of a vertical hydro-generator, characterized in that: The system includes a thrust oil trough (1), an L-shaped oil baffle (2), an upper oil baffle (7), and an oil trough cover (11). The bottom end of the thrust oil trough (1) is mounted on the housing (12). The top end of the thrust oil trough (1) forms a sealed space with the thrust head (15) through the oil trough cover (11). The left end of the L-shaped oil baffle (2) is mounted to the lower end of the thrust oil trough (1) through a first support seat. An insulating plate (6) is provided on the upper right end of the L-shaped oil baffle (2) and is close to the thrust bearing (13) with a gap. The left end of the upper oil baffle (7) is mounted to the upper end of the thrust oil trough (1) through a second support seat. The right side of the upper oil baffle (7) is close to the mirror plate (14) with a gap. A pipe assembly (4) is provided between the L-shaped oil separator (2) and the upper oil baffle (7). An oil inlet (9) is provided at the lower part of the thrust oil groove (1), and an oil outlet (10) is provided at the upper part of the thrust oil groove (1). An oil inlet passage is formed between the L-shaped oil separator (2), the thrust oil groove (1), the housing (12), and the thrust bearing (13). An oil outlet passage is formed between the upper oil baffle (7), the oil separator (2), the mirror plate (14), and the thrust oil groove (1). A residual oil collection trough (16) is formed between the thrust oil groove (1), the upper oil baffle (7), the oil groove cover (11), and the thrust head (15). The residual oil collection trough (16) is connected to the oil inlet passage through the pipe assembly (4).

2. The mechanical structure of the control oil circuit for the external pump cooling thrust oil tank of the vertical hydro-generator according to claim 1, characterized in that: An oil distribution plate (3) is provided between the first support base and the housing (12), and the oil distribution plate (3) has evenly distributed openings.

3. The mechanical structure of the control oil circuit for the external pump cooling thrust oil tank of the vertical hydro-generator according to claim 1, characterized in that: The L-shaped oil separator (2) is mounted on the housing (12) by a support assembly (5).

4. The mechanical structure of the control oil circuit for the external pump cooling thrust oil tank of the vertical hydro-generator according to claim 1, characterized in that: A pad (8) is provided at the junction of the upper oil baffle (7) and the second support seat.

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