Precise part protection and storage device

Abstract

The utility model provides a protective storage device for precision parts. The protective storage device comprises a sealed container, a protective gas supply unit and a vacuumizing unit, the sealed container comprises a box body and a cover body matched with the box body for use, an annular cavity for accommodating the mirror plate is formed in the box body, a channel is formed in the box body or the cover body, and the channel is connected with the protective gas supply unit or the vacuumizing unit through a valve. The sealing container is vacuumized through the vacuumizing unit, oxygen and most water vapor in the sealing container can be exhausted, then protective gas is injected into the sealing container through the protective gas supply unit to form atmosphere protection on the mirror plate, and the device is simple in structure, convenient to operate, capable of facilitating maintenance of the mirror plate and low in maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of parts protection and storage, in particular to a precision parts protection storage device. Background Art

[0002] The mirror plate is one of the most critical components of the hydro-turbine generator set. Its function is to transfer the axial load to the thrust bearing. It is expensive, and the mirror surface is a finely machined surface, which requires very high technical requirements. It is very easy to react with oxygen in the air and rust. In order to achieve long-term preservation of the mirror plate, the site must have the ability to hoist the mirror plate and the container, and the preservation site requirements are very demanding. The mirror plate of a hydropower station maintains the original packaging when it arrives. The upper and lower parts are non-sealed wooden packaging, the side and base are steel structures, the surface coating is rust-proof material, and there are no special maintenance methods such as sealing. In view of the fact that the original packaging and the current storage place cannot meet the needs of long-term preservation of the spare parts, it is urgent to formulate a long-term preservation plan for the spare parts of the mirror plate and process new storage containers for transfer.

[0003] There is almost no experience and examples to draw on for the long-term preservation technology of mirror panels of large-scale hydro-turbine generator sets in China, and the manufacturers have not provided any specific methods for the long-term preservation of mirror panels.

[0004] In addition, through the investigation of larger domestic hydropower stations, it was found that when the mirror plate spare parts are stored for a long time by the oil immersion method, the oil will contain a certain amount of moisture during the long-term storage process, and there will be a certain impact on the protective oil film formed on the mirror surface under static conditions. Therefore, the mirror plate may also rust if it is immersed in static oil for a long time. In addition, doing so is not convenient for the maintenance of the mirror plate, and the maintenance cost is high. Utility Model Content

[0005] The purpose of the utility model is to provide a precision component protection storage device, which can exhaust oxygen and water vapor in the sealed container by vacuuming the sealed container through a vacuum unit, and then inject protective gas into the sealed container through a protective gas supply unit to form an atmosphere protection for the mirror plate. The utility model has a simple structure and is easy to operate, which is convenient for the maintenance of the mirror plate and has a low maintenance cost. In order to achieve the above technical features, the purpose of the utility model is achieved as follows:

[0006] A precision component protection storage device comprises a sealed container, a protective gas supply unit, and a vacuum unit;

[0007] The sealed container is used to accommodate the components to be stored. The sealed container includes a box body and a cover body used in conjunction with the box body. The box body or the cover body is provided with a channel, and the channel is connected to the protective gas supply unit or the vacuum unit through a valve.

[0008] A sealing member is provided between the box body and the cover body, and the box body is connected to the cover body via a fastener.

[0009] The protective gas supply unit is a nitrogen tank.

[0010] A desiccant is placed in the box.

[0011] The desiccant is a gas phase anti-rust desiccant.

[0012] A bakelite board for supporting the components to be stored is placed in the box.

[0013] Wedge blocks are placed in the box and are installed on both sides of the components to be stored.

[0014] The bottom of the box body is provided with supporting legs.

[0015] The nitrogen tank is used to fill the sealed container with nitrogen at a pressure of 0.2 MPa.

[0016] The utility model has the following beneficial effects:

[0017] 1. The sealed container is evacuated by the vacuum unit to discharge oxygen and most of the water vapor in the sealed container, and then the protective gas is injected into the sealed container through the protective gas supply unit to form an atmosphere protection for the mirror plate.

[0018] 2. Through the application of vapor phase anti-rust desiccant in the box, it can not only absorb moisture strongly, but also has excellent vapor phase anti-rust performance, thereby further strengthening the anti-rust protection of the parts to be stored in the sealed container.

[0019] 3. The utility model has a simple structure, is easy to operate, is convenient for the maintenance of the mirror plate, and has a low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A cross-sectional view of a precision component protection storage device provided by an embodiment of the utility model;

[0022] Figure 2 A top view of a precision component protection storage device provided by an embodiment of the utility model;

[0023] In the figure: a sealed container 1, a box body 1a, a cover body 1b, a channel 1c, a sealing member 1d, a valve 2, a bakelite board 3, a wedge block 4, a leg 5, a part to be stored 6, and a fastener 7. DETAILED DESCRIPTION

[0024] The following further describes the implementation of the utility model by taking the mirror plate of a hydro-generator set as the component to be stored.

[0025] See also Figure 1-2A precision component protection storage device includes a sealed container 1, a protective gas supply unit, and a vacuum unit; the sealed container 1 includes a box body 1a and a cover body 1b used in conjunction with the box body 1a, the box body 1a is provided with an annular cavity 1a1 for accommodating a mirror plate, the box body 1a or the cover body 1b is provided with a channel 1c, and the channel 1c is connected to the protective gas supply unit or the vacuum unit through a valve 2. During operation, the mirror plate that has been protected is first placed in the annular cavity 1a1, and the cover 1b is installed, thus completing the placement of the mirror plate in the sealed container 1; then the valve 2 is connected to the vacuum pumping unit and the sealed container 1 is vacuumed through the vacuum pumping unit; after the vacuum pumping is completed, the valve 2 is closed to remove the vacuum pumping unit, and the protective gas supply unit is connected to the valve 2, and then the protective gas is injected into the sealed container 1 through the protective gas supply unit; the sealed container 1 is vacuumed by the vacuum pumping unit to discharge oxygen and most of the water vapor in the sealed container 1, and then the protective gas is injected into the sealed container 1 through the protective gas supply unit to form an atmosphere protection for the mirror plate, thereby avoiding the occurrence of rust; the utility model has a simple structure and is easy to operate, and is convenient for the maintenance of the mirror plate and has a low maintenance cost.

[0026] Furthermore, a sealing member 1d is provided between the box body 1a and the cover body 1b, and the box body 1a is detachably connected to the cover body 1b via a fastener 9 to facilitate assembly and disassembly of the sealed container 1. At the same time, the sealing member 1d is provided between the box body 1a and the cover body 1b to achieve a sealing effect.

[0027] Furthermore, the protective gas supply unit is a nitrogen tank, and nitrogen is injected into the sealed container 1 through the nitrogen tank to achieve nitrogen protection.

[0028] Furthermore, a desiccant is placed in the box 1a. After the mirror plate is placed in the box 1a and before the cover 1b is installed, the desiccant is placed in the box 1a, and then the cover 1b is installed, and the moisture in the box 1a is absorbed by the desiccant.

[0029] Furthermore, the desiccant is a gas phase anti-rust desiccant, which can not only absorb moisture very strongly, but also has excellent gas phase anti-rust performance, thereby further strengthening the anti-rust protection of the mirror plate in the sealed container 1.

[0030] Furthermore, a bakelite board 3 for supporting the mirror panel is placed in the box 1a, and the height of the bakelite board 3 is adjusted to achieve horizontal placement of the mirror panel to avoid deformation caused by uneven placement.

[0031] Furthermore, wedge blocks 4 are placed in the box body 1 a , and the wedge blocks 4 are installed on the inner side and the outer side of the mirror plate to prevent the mirror plate from moving in the sealed container 1 .

[0032] The bottom of the box body 1a is provided with legs 5, so that the box body 1a does not directly contact the ground, reducing the contact with ground moisture, and also facilitating the transfer by forklift.

[0033] Furthermore, the nitrogen tank is used to fill the sealed container 1 with nitrogen at a pressure of 0.2 MPa, so that the mirror plate in the sealed container 1 is protected by the atmosphere, while maintaining the pressure in the sealed container 1 to prevent the entry of external oxygen.

Claims

1. A precision component protection storage device, characterized in that: It comprises a sealed container (1), a protective gas supply unit, and a vacuum unit; The sealed container (1) is used to contain the components to be stored, and comprises a box body (1a) and a cover body (1b) used in conjunction with the box body (1a). The box body (1a) or the cover body (1b) is provided with a channel (1c), and the channel (1c) is connected to the protective gas supply unit or the vacuum unit via a valve (2).

2. A precision component protection storage device according to claim 1, characterized in that: A sealing member (1d) is provided between the box body (1a) and the cover body (1b), and the box body (1a) is connected to the cover body (1b) via a fastener (7).

3. A precision component protection storage device according to claim 2, characterized in that: The protective gas supply unit is a nitrogen tank.

4. A precision component protection storage device according to claim 3, characterized in that: A desiccant is placed in the box (1a).

5. A precision component protection storage device according to claim 4, characterized in that: The desiccant is a gas phase anti-rust desiccant.

6. A precision component protection storage device according to claim 5, characterized in that: A bakelite board (3) for supporting the components to be stored is placed in the box (1a).

7. A precision component protection storage device according to claim 6, characterized in that: Wedge blocks (4) are placed in the box body (1a), and the wedge blocks (4) are installed on both sides of the components to be stored.

8. A precision component protection storage device according to claim 7, characterized in that: The bottom of the box body (1a) is provided with supporting legs (5).

9. A precision component protection storage device according to claim 8, characterized in that: The nitrogen tank is used to fill the sealed container (1) with nitrogen at a pressure of 0.2 MPa.

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