Power-generator-pressure-adjustable unpowered oil groove gas sealing structure

Abstract

The utility model relates to the field of generators, and discloses a generator pressure-adjustable unpowered oil groove gas sealing structure which is composed of a rotor, a stator, an air inducing plate, a gas sealing pipe fitting, a pressure adjusting valve, an oil groove cover, a pressure equalizing pipe fitting and an oil groove, the air inducing plate is arranged below the stator and the rotor, the air inducing plate is in contact with the stator, and a gap is reserved between the air inducing plate and the rotor; the oil groove cover is installed above the oil groove and composed of an oil groove cover upper cavity and an oil groove cover lower cavity, one side of the gas sealing pipe fitting is connected with the air inducing plate, the other side of the gas sealing pipe fitting is connected with the oil groove cover upper cavity, the gas sealing effect of the rotating part and the static part is achieved, and therefore oil mist is prevented from overflowing from a gap; and the pressure regulating valve is mounted on the gas sealing pipe fitting and is used for regulating the flow of the sealing gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of generator, especially involves the power -free oil groove gas seal structure of generator pressure adjustable. BACKGROUND

[0002] Because the generator in the rotation process, the lubricating oil in the oil groove fluctuates on one hand, the other hand along with the lengthening of unit operation time, oil temperature rises, causes a part lubricating oil to gasify. The oil mist of gasification can overflow in the clearance between the rotating part and the stationary part, therefore needs to set up the gas seal in the static combination surface. The traditional structure of gas seal is to add the fan, the use of fan not only will reduce the overhaul space, but also will increase the cost of power plant electricity, simultaneously if the fan always presses in the oil groove, the pressure in the oil groove will gradually rise, then leads to the weak place of other seals to appear the situation of oil seepage. A kind of power -free oil groove gas seal structure of generator pressure adjustable can solve the above problems. SUMMARY

[0003] Therefore, the utility model aims at disclosing a kind of power -free oil groove gas seal structure of generator pressure adjustable, its function is to make the air pressure between rotor and stator rise by the rotation of rotor, by gas seal pipe piece, high pressure gas of this area is guided into oil groove cover upper cavity, realizes the gas seal effect of rotating part and stationary part under the condition of no additional fan, to prevent oil mist from overflowing from this clearance, adjust the flow of sealing gas by pressure regulating valve, balance the air pressure in oil groove by equalizing pressure pipe piece, prevent the pressure in oil groove from being too high.

[0004] The technical scheme of the utility model is: by rotor, stator, air guide plate, gas seal pipe piece, pressure regulating valve, oil groove cover, equalizing pressure pipe piece, oil groove are formed, air guide plate is arranged below stator and rotor, oil groove cover is installed above oil groove, gas seal pipe piece is installed between oil groove cover and air guide plate, pressure regulating valve is installed on gas seal pipe piece, equalizing pressure pipe piece is installed on oil groove cover.

[0005] As a preferred implementation, the oil groove cover is composed of oil groove cover upper cavity and oil groove cover lower cavity, the gas seal pipe piece is connected with the oil groove cover upper cavity, and the equalizing pressure pipe piece is connected with the oil groove cover lower cavity.

[0006] As a preferred implementation, the air guide plate is in contact with the stator and has a gap with the rotor.

[0007] Technical effects

[0008] 1. In the utility model, the air pressure between rotor and stator is raised during the rotation of rotor, high pressure gas of this area is guided into oil groove cover upper cavity by gas seal pipe piece, to realize the gas seal effect of rotating part and stationary part under the condition of no additional fan, to prevent oil mist from overflowing from this clearance.

[0009] 2. The oil tank cover of this utility model is divided into two parts: an upper cavity and a lower cavity. The upper cavity is connected to a gas sealing pipe to allow high-pressure gas to be introduced. The lower cavity is connected to a pressure equalization pipe to balance the gas pressure in the oil tank and prevent excessive pressure in the oil tank.

[0010] 3. In this utility model, one end of the air duct is in contact with the stator, and the other end is left with a gap from the rotor to prevent the rotor from rubbing against the air duct during operation. Attached Figure Description

[0011] Figure 1 Detailed drawing of a generator pressure-adjustable, non-powered oil tank gas sealing structure;

[0012] Figure 2 Detailed drawing of the oil tank cover;

[0013] Explanation of component labels in the attached diagram:

[0014] 1. Rotor; 2. Stator; 3. Exhaust fan plate; 4. Gas sealing pipe fitting; 5. Pressure regulating valve; 6. Oil tank cover; 7. Pressure equalizing pipe fitting; 8. Oil tank; 9. Upper cavity of oil tank cover; 10. Lower cavity of oil tank cover. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 As shown, the generator pressure adjustable non-powered oil tank gas seal structure consists of rotor 1, stator 2, induced draft plate 3, gas seal pipe 4, pressure regulating valve 5, oil tank cover 6, pressure equalizing pipe 7, and oil tank 8. The induced draft plate 3 is set below the stator 2 and rotor 1, the oil tank cover 6 is installed above the oil tank 8, the gas seal pipe 4 is installed between the oil tank cover 6 and the induced draft plate 3, the pressure regulating valve 5 is installed on the gas seal pipe 4, and the pressure equalizing pipe 7 is installed on the oil tank cover 6.

[0017] like Figure 2 As shown, the oil tank cover 6 is composed of an upper cavity 9 and a lower cavity 10. The gas sealing pipe 4 is connected to the upper cavity 9, and the pressure equalization pipe 7 is connected to the lower cavity 10.

[0018] like Figure 1 As shown, the air duct 3 is in contact with the stator 2 and has a gap with the rotor 1.

[0019] Although the basic principles and main features of this utility model have been described above in conjunction with the accompanying drawings, those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A power generator pressure-adjustable unpowered sump gas seal structure, characterized by, The utility model discloses a rotor (1), stator (2), air baffle (3), gas seal pipe spare (4), pressure regulating valve (5), oil groove cover (6), equalizing pipe spare (7), oil groove (8) constitute, and the air baffle (3) is arranged below stator (2) and rotor (1), and the oil groove cover (6) is installed above oil groove (8), and the gas seal pipe spare (4) is installed between oil groove cover (6) and air baffle (3), and the pressure regulating valve (5) is installed on gas seal pipe spare (4), and the equalizing pipe spare (7) is installed on oil groove cover (6).

2. A power generator pressure adjustable unpowered sump gas seal structure according to claim 1, wherein, The oil groove cover (6) is composed of an upper cavity (9) and a lower cavity (10), the gas seal pipe spare (4) is connected with the upper cavity (9), and the equalizing pipe spare (7) is connected with the lower cavity (10).

3. A power generator pressure adjustable unpowered sump gas seal structure according to claim 1, wherein, The air baffle (3) is in contact with the stator (2) and has a gap with the rotor (1).

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