CN111765006A - A switch for gas turbine oil seal - Google Patents

Abstract

A gas turbine oil seal switch relates to the technical field of energy and power. The invention is to solve the problem that the long-term oil seal of the gas turbine fills the accessories and inner cavity of the fuel system with lubricating oil during the false start of the gas turbine, resulting in corrosion of the components. A gas turbine oil seal switch according to the present invention includes two blocking covers, a plurality of first screws, a flange, an oil seal switch housing, two pipe joints, a motor mechanism, a casing assembly, a main shaft and a round pipe. A switch for the oil seal of a gas turbine is driven by the rotation of the main shaft to drive the rotation of the spline shaft, so as to realize the opening or closing of the switch of the oil seal of the gas turbine. It is mainly used to maintain the fuel system accessories when the gas turbine needs to be shut down for a long time.

Description

A switch for gas turbine oil seal

technical field

The invention belongs to the technical field of gas turbine energy and power, and particularly relates to an electric on-off valve used by a gas turbine.

Background technique

Oil seals of gas turbines can be divided into short-term oil seals within 7 days and nights, general oil seals within 30 days and nights, and long-term oil seals within one year according to different service cycles. The preservation of the oil seal for more than one year is realized by the corresponding packaging and preservation work on the basis of the completion of the long-term oil seal of the gas turbine. When the gas turbine is out of service for a long time, the accessories of the fuel system will be corroded by the residual fuel, so that the gas turbine cannot be turned on or off normally.

SUMMARY OF THE INVENTION

The invention aims to solve the problem that the fuel oil system accessories will be corroded by residual fuel oil when the gas turbine is out of service for a long time. The invention provides a switch for gas turbine oil seal.

The technical scheme of the present invention includes: two blocking covers, a plurality of first screws, a flange, an oil seal switch housing, two pipe joints, an electric mechanism, a cover assembly, a main shaft and a round pipe;

The casing of the oil seal switch is a cuboid structure, the cuboid structure has a shaft passage along its axial direction, and a pipe passage is also opened on the oil seal switch casing. The pipe passage and the shaft passage are perpendicular to each other, and the flange is connected to the One end face of the oil seal switch housing is threadedly connected, and the other end of the oil seal switch housing is communicated with the cover assembly;

The two pipe joints are respectively connected to the two ends of the round pipe, the two blocking covers are respectively blocked on the outer ends of the two pipe joints, the round pipe is located in the pipe channel, the round pipe is coaxial with the pipe channel, and a first a through hole, the main axis of the first through hole is perpendicular to the main axis of the pipe channel;

The main shaft is a cylindrical structure, the main shaft is located in the shaft passage, the main shaft is coaxial with the shaft passage, the main shaft is provided with a second through hole, the main shaft of the second through hole is perpendicular to the main shaft of the shaft passage, and the first through hole is nested in the second passage. One end of the main shaft is connected with the electric mechanism, and the electric mechanism is located in the cover assembly.

Preferably, a first washer is provided between the flange and each of the first screws.

Preferably, a second gasket is provided between the oil seal switch housing and the two pipe joints.

Preferably, one end of the main shaft is connected with the spline shaft at one end of the motor mechanism.

The gas turbine oil seal switch of the present invention opens or closes the lubricating oil passage to the fuel system when the gas turbine needs to be shut down for a long time, maintains the accessories of the fuel system to prevent corrosion, and increases the life of the gas turbine. The gas turbine oil seal switch of the invention has the advantages of compact structure, shock and vibration resistance and high reliability, and solves the problem that the fuel oil system accessories will be corroded by residual fuel oil when the gas turbine is out of service for a long time.

Description of drawings

Fig. 1 is a schematic diagram of a switch structure of a gas turbine oil seal; wherein 2 is a first gasket, 6 is a sealing ring, 11 is a protective cover, 12 is a second screw, 13 is a second washer, 14 is a locking plate, and 16 is a The third gasket, 17 is the fourth gasket, and 31 is plugging;

2 is a front view of a switch structure of a gas turbine oil seal;

Figure 3 is a schematic diagram of a blocking structure; wherein 18 is an expansion ring, 19 is an adjustment washer, 20 is a stop ring, 21 is a sealing ring, and 22 is a ring;

Fig. 4 is the front view of electric mechanism;

5 is a schematic diagram of a cylindrical clamp; wherein 24 is a nut, 25 is a third washer, 26 is a third screw, 27 is a backing plate, and 28 is a slat;

Figure 6 is a front view of the oil seal switch housing structure; wherein G is the first marking line, H is the second marking line;

Figure 7 is a schematic diagram of the structure of the oil seal switch housing; wherein 7B is a pin, 7D is a bushing;

Figure 8 is a schematic diagram of a sign structure; wherein 7E is a sign, and 7F is a screw;

Figure 9 is a front view of the structure of the cover assembly; wherein 15C is an outer shell;

Figure 10 is a side view of the housing assembly structure. 15A is steel wire and 15B is bottom plate;

Detailed ways

Embodiment 1: This embodiment is described in detail with reference to the accompanying drawings. As shown in FIGS. 1 and 2 , a gas turbine oil seal switch according to this embodiment includes: two blocking covers 1 and a plurality of first screws 4 , flange 5, oil seal switch housing 7, two pipe joints 9, motor mechanism 10, cover assembly 15, main shaft 29 and round pipe 30;

The oil seal switch housing 7 is a cuboid structure, and the cuboid structure has a shaft passage along its axial direction. The oil seal switch housing 7 is also provided with a pipe passage. The pipe passage and the shaft passage are perpendicular to each other. The flange 5 passes through a plurality of first A screw 4 is threadedly connected to one end face of the oil seal switch housing 7, and the other end of the oil seal switch housing 7 is communicated with the cover assembly 15;

The two pipe joints 9 are respectively connected to the two ends of the round pipe 30, the two blocking covers 1 are respectively blocked on the outer ends of the two pipe joints 9, the round pipe 30 is located in the pipe channel, the round pipe 30 is coaxial with the pipe channel, The pipe 30 is provided with a first through hole, and the main axis of the first through hole is perpendicular to the main axis of the pipe channel;

The main shaft 29 is a cylindrical structure, the main shaft 29 is located in the shaft passage, the main shaft 29 is coaxial with the shaft passage, the main shaft 29 is provided with a second through hole, the main shaft of the second through hole is perpendicular to the main shaft of the shaft passage, and the first through hole is nested In the second through hole; one end of the main shaft 29 is connected with the motor mechanism 10 , and the motor mechanism 10 is located in the cover assembly 15 .

Embodiment 2: This embodiment further describes the switch of a gas turbine oil seal described in Embodiment 1. As shown in FIG. 1 , a first screw 4 is provided between the flange 5 and each first screw 4 . Washer 3.

Embodiment 3: This embodiment further describes the switch of a gas turbine oil seal described in Embodiment 1. As shown in FIG. Two gaskets 8.

Embodiment 4: This embodiment further describes the switch of a gas turbine oil seal described in Embodiment 1. As shown in FIG.

Claims (4)

1. A gas turbine oil seal switch, comprising: the device comprises two plugging covers (1), a plurality of first screws (4), a flange (5), an oil seal switch shell (7), two pipe joints (9), an electric mechanism (10), a housing component (15), a main shaft (29) and a circular pipe (30);

the oil seal switch shell (7) is of a cuboid structure, the cuboid structure is provided with an axial channel along the axial direction of the cuboid structure, the oil seal switch shell (7) is also provided with a pipe channel, the pipe channel is vertical to the axial channel, the flange (5) is in threaded connection with one end face of the oil seal switch shell (7) through a plurality of first screws (4), and the other end of the oil seal switch shell (7) is communicated with the housing component (15);

the two pipe joints (9) are respectively connected to two ends of a circular pipe (30), the two blocking covers (1) are respectively blocked at the outer ends of the two pipe joints (9), the circular pipe (30) is positioned in a pipe passage, the circular pipe (30) is coaxial with the pipe passage, a first through hole is arranged on the circular pipe (30), and a main shaft of the first through hole is perpendicular to a main shaft of the pipe passage;

the main shaft (29) is of a cylindrical structure, the main shaft (29) is positioned in the shaft channel, the main shaft (29) is coaxial with the shaft channel, a second through hole is formed in the main shaft (29), the main shaft of the second through hole is perpendicular to the main shaft of the shaft channel, and the first through hole is nested in the second through hole; one end of the main shaft (29) is connected with the electric mechanism (10), and the electric mechanism (10) is positioned in the housing component (15).

2. Gas turbine oil seal switch according to claim 1, characterised in that a first washer (3) is provided between the flange (5) and each first screw (4).

3. A gas turbine oil seal switch according to claim 1, characterized in that a second gasket (8) is provided between the oil seal switch housing (7) and both pipe joints (9).

4. The gas turbine oil seal switch according to claim 1, wherein one end of the main shaft (29) is connected to a spline shaft (23) at one end of the electric mechanism (10).

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