WO2018196004A1

WO2018196004A1 - Steam turbine barring rocker shaft sealing apparatus

Info

Publication number: WO2018196004A1
Application number: PCT/CN2017/082618
Authority: WO
Inventors: 邓军
Original assignee: 深圳市能源环保有限公司
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2018-11-01

Abstract

A steam turbine barring crank shaft sealing apparatus, comprising a crank shaft (1), a turbine base (4), shaft holes (4.1, 4.2) on two sides of the turbine base, a hand crank mounting base (3), and a stroke controller mounting base (2), the crank shaft (1) being mounted in the turbine base shaft holes (4.1, 4.2), the hand crank mounting base (3) and the stroke controller mounting base (2) respectively being arranged at the two ends of the crank shaft (1), a hand crank being arranged on the hand crank mounting base (3), rotation of the hand crank rotating the crank shaft (1) to implement electric-powered barring, sealing members also being arranged at positions corresponding to the turbine base shaft holes (4.1, 4.2), and the sealing members having a sealing effect and preventing lubricant from leaking from shaft base gaps. The advantages thereof are preventing lubricant waste, ensuring environmental sanitation, and also preventing the occurrence of safety hazards.

Description

Steam turbine crank rocker shaft sealing device

Technical field

The invention relates to a steamer crank rocker shaft, in particular to a steam turbine crank rocker shaft sealing device.

Background technique

In the prior art, the steam turbine is connected to the generator through a pair of rigid couplings, and the rotor disc brake device is mounted on the rear bearing cover, driven by the electric motor, and reduced by the worm gear and the gear to achieve the required turning speed, the steam turbine disk. The car speed is 4.8 rpm, and when the rotor speed is higher than the car speed, the turning device can automatically exit the working position.

When the turbine rotor needs to be put into the cranking, the motor rotates the disc by manual rotation, and the crankshaft of the cranking cart rotates 45 degrees until the worm wheel and the gear are bonded, and then the electric motor is started to perform electric driving. When the turbine rotates and the rotor rotates faster than the crank speed, the rocker shaft drives the worm gear out of the gear and rotates 45 degrees to the fully disengaged position. Both the rocker shaft and the rocker shaft need to be rotated 45 degrees. The rocker shaft is fixed in two shaft holes at both ends of the cab base, one side of which is connected to the operating handle and the other side is connected to the stroke controller.

In the prior art, since the rocker shaft and the axle hole of the turning machine seat are gap-fitted, without any sealing device, the lubricating oil oozes to the two ends through the gap between the rocker shaft and the shaft hole during the running of the rotor, Flow to the bearing housing, can not be eliminated, need to be removed regularly.

The problem is that the lubricating oil flows out to the turning machine base and the bearing box, which wastes lubricating oil, affects environmental sanitation and causes safety hazards.

Summary of the invention

In order to solve the above problems, the present invention provides a steamer crank rocker shaft sealing device, comprising a rocker shaft, a machine base, a shaft hole on both sides of the machine base, a rocker mount, a stroke controller mount, and the rocker a shaft is mounted in the shaft hole of the base, and the rocker mount and the stroke controller mount are respectively disposed at two ends of the rocker shaft, and a rocker is disposed on the rocker mount Rotating the rocker shaft to rotate the rocker shaft to perform electric power steering, characterized in that a sealing member is further disposed at a position corresponding to the shaft hole of the base, and the sealing member functions as a sealing to prevent lubricating oil from the shaft Leakage in the seat gap.

The technical solution proposed by the present invention is to provide a steam turbine crankshaft shaft sealing device, which comprises a rocker shaft, a base, a shaft hole on both sides of the base, a rocker mount, and a stroke controller. a mounting seat, the rocker shaft is mounted in the base shaft hole, and the rocker mounting seat and the stroke controller mounting seat are respectively disposed at two ends of the rocker shaft, and the rocker shaft is installed a rocker is disposed on the seat, and the rocker shaft is rotated to rotate the rocker shaft to perform electric power steering, wherein a sealing member is further disposed at a position corresponding to the shaft hole of the base, the sealing member The sealing function prevents the lubricating oil from leaking out of the shaft seat clearance.

In a preferred embodiment of the invention, a shaft seal groove is provided on the rocker shaft, and the seal is disposed on the shaft seal groove.

In a preferred embodiment of the invention, a hole sealing groove is provided in the shaft hole, and the seal is disposed on the hole sealing groove.

In a preferred embodiment of the invention, the seal member is O-ring.

The invention has the beneficial effects that the invention provides a steamer shaft rocker shaft sealing device, wherein a sealing member is further disposed at a position of the rocker shaft corresponding to the shaft hole of the machine base, and the sealing member acts as a sealing function, thereby effectively preventing the lubricating oil from the shaft. Leakage in the gap of the seat to avoid waste of lubricating oil, ensuring environmental sanitation and avoiding safety hazards.

BRIEF DESCRIPTION OF THE DRAWINGS:

1 to 3 are schematic views of the structure of the prior art, and FIG. 2 is a schematic view of a partial structure.

4 to 5 are schematic views showing the structure of the first embodiment of the present invention, and FIG. 5 is a partial structural view.

6 to FIG. 7 are schematic structural views of a second embodiment of the present invention, wherein FIG. 6 is a partial structural diagram.

In the picture,

1 rocker shaft, 1.1, 1.2 shaft sealing groove; 1.1A, 1.2A seals;

2. Stroke controller mount;

3 hand rocker mounts;

4 base, 4.1, 4.2 shaft hole, 4.1A, 4.2A hole sealing groove; 4.1B, 4.2B seal.

detailed description

1 to 3 are schematic views of the structure of the prior art, and FIG. 2 is a schematic view of a partial structure. The figure shows that in the prior art, the steamer rocker shaft device includes a rocker shaft 1, a base 4, shaft holes 4.1, 4.2 on both sides of the base, a rocker mount 3, and a stroke controller mount 2 The rocker shaft 1 is installed in the shaft hole 4.1, 4.2 of the base, and the rocker mount 3 and the stroke controller mount 2 are respectively disposed at both ends of the rocker shaft 1, and the hand is set on the rocker mount 3 The rocker rotates the rocker shaft 1 by turning the hand lever to perform electric power steering.

As shown in the figure, in the prior art, since the rocker shaft 1 and the wheel housing shaft holes 4.1, 4.2 are gap-fitted, there is no sealing device, and the lubricating oil passes through the rocker shaft 1 and the shaft hole during the operation of the rotor. The gap between the two leaks to the ends and flows to the bearing housing, which cannot be eliminated. Only the dirt is removed regularly. The problem is that the lubricating oil flows out to the turning machine base and the bearing box, which wastes lubricating oil, affects environmental sanitation and causes safety hazards.

4 to 5 are schematic views showing the structure of the first embodiment of the present invention. FIG. 5 is a partial structural diagram. The figure shows that in this example, the rocker shaft oil leakage sealing device of the steam turbine turning device includes the rocker shaft 1, the base 4, the shaft holes on both sides of the machine base 4.1, 4.2, the rocker mount 3, the stroke controller Mounting seat 2, rocker shaft 1 is installed in the base shaft hole 4.1, 4.2, the rocker mounting seat 3 and the stroke controller mounting seat 2 are respectively disposed at the two ends of the rocker shaft 1, and the rocker mounting seat 3 The hand rocker is set on the top, and the rocker shaft 1 is rotated by rotating the hand rocker to perform electric power steering. Different from the prior art, in this example, a sealing member is further disposed at a position corresponding to the shaft hole 4.1, 4.2 of the base, and the sealing member functions as a sealing to prevent leakage of lubricating oil from the gap of the shaft seat. Figure 5 shows that in this example, shaft seal grooves 1.1, 1.2 are provided on the rocker shaft 1, and Figure 4 shows that the seals 1.1A, 1.2A are respectively disposed on the shaft seal grooves 1.1, 1.2. The present invention suggests that in this example, the seals 1.1A, 1.2A may employ O-ring seals.

6 to FIG. 7 are schematic structural views of a second embodiment of the present invention, wherein FIG. 6 is a partial structural diagram. The figure shows, with this The first embodiment of the invention differs in that, in this example, the sealing groove is disposed in the shaft hole of the housing. Fig. 6 shows that hole sealing grooves 4.1A, 4.2A are respectively provided on the shaft holes 4.1, 4.2, and the sealing members 4.1B, 4.2B are respectively provided on the hole sealing grooves 4.1A, 4.2A for sealing action.

Claims

A steamer crank rocker shaft sealing device comprises a rocker shaft, a machine base, a shaft hole on both sides of the machine base, a rocker mount, a stroke controller mount, and the rocker shaft is mounted on the base shaft In the hole, the rocker mount and the stroke controller mount are respectively disposed at two ends of the rocker shaft, and a rocker is disposed on the rocker mount, and the handle is rotated by rotating the handle The rocker shaft rotates to perform electric locomotive, and is characterized in that a sealing member is further disposed at a position corresponding to the shaft hole of the base, and the sealing member functions as a sealing to prevent leakage of lubricating oil from the gap of the shaft seat.
The steamer rocker shaft sealing device according to claim 1, wherein a shaft seal groove is provided on the rocker shaft, and the seal is disposed on the shaft seal groove.
The steamer rocker shaft sealing device according to claim 1, wherein a hole sealing groove is provided in the shaft hole, and the sealing member is disposed on the hole sealing groove.
The steamer rocker shaft sealing device according to claim 1, wherein the sealing member adopts an O-ring seal.