CN209856485U

CN209856485U - Negative pressure adjusting device for lubricating oil tank of steam turbine

Info

Publication number: CN209856485U
Application number: CN201920505748.5U
Authority: CN
Inventors: 何为定; 刘海昌
Original assignee: ZHEJIANG DATANG WUSHASHAN ELECTRIC POWER GENERATING Co Ltd
Current assignee: ZHEJIANG DATANG WUSHASHAN ELECTRIC POWER GENERATING Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2019-12-27
Anticipated expiration: 2029-04-15

Abstract

Turbine lubricating oil tank negative pressure adjusting device. When the current adjusting mode is used, the locking nut needs to be loosened and screwed, the labor is wasted, after the adjustment is completed, the locking nut can be loosened along with the vibration of a pipeline system, the opening degree of the adjusting door is changed, and therefore the negative pressure of the oil tank is changed. The utility model discloses the constitution includes: fix handle components (2) on dead lever (1) and rotate and connect and be in the dead lever on air adjusting plate (3), handle components include handle (7) and lower handle (6), lower handle with last handle connect through the pivot, lower handle right-hand member with last handle between set up spring (8), the left end of lower handle be fixed with bolt (4), the bolt insert air adjusting plate arc surface positioning groove (9) in. The utility model is used for the negative pressure of steam turbine lubricating-oil tank is adjusted.

Description

Negative pressure adjusting device for lubricating oil tank of steam turbine

The technical field is as follows:

the utility model relates to a turbine lubricating-oil tank negative pressure adjusting device.

Background art:

the negative pressure mode of the lubricating oil tank of the steam turbine is to adjust a manual valve at the outlet of a fan at present. The manual door is adjusted in a 90-degree opening and closing direction. When the negative pressure of the oil tank needs to be adjusted, the locking nut is loosened, the adjusting rod is adjusted in the 90-degree opening and closing direction, and after the adjustment is completed, the locking nut is screwed down. And finishing the negative pressure regulation work.

The main drawbacks of this adjustment device are two-fold:

(1) when in use, the locking nut needs to be loosened and screwed, which is laborious;

(2) after the adjustment is completed, the locking nut can loosen along with the vibration of a pipeline system, so that the opening degree of the adjusting door is changed, and the negative pressure of the oil tank is changed.

The utility model has the following contents:

the utility model aims at solving present negative pressure adjustment mode hard, can appear not hard up problem, provide an easy operation, can not take place not hard up, the steam turbine lubricating-oil tank negative pressure adjusting device of skew.

The above purpose is realized by the following technical scheme:

a turbine lubricating oil tank negative pressure adjusting device comprises: fix handle components and rotation on the dead lever and connect and be in the dead lever on the air adjusting plate, handle components include handle and lower handle, lower handle with last handle connect through the pivot, lower handle right-hand member with last handle between set up the spring, the left end of lower handle be fixed with the bolt, the bolt insert the positioning groove of air adjusting plate arc surface in.

The middle part of the lower handle is arc-shaped.

Has the advantages that:

1. the utility model discloses need not hard during the operation of adjustment oil tank negative pressure, can operate slightly hard. In addition, after the adjustment is completed, the adjusting device is fixed, and looseness and offset cannot occur, so that the situation that the negative pressure of the oil tank is uncontrollably changed is prevented.

The utility model discloses negative pressure accommodation process and mode are simplified in the application of spring handle mode, and easy operation is effortless.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of an air register plate;

in the figure: 1. fixing the rod; 2. a handle assembly; 3. an air adjusting plate; 4. a bolt; 5. circular arc shape; 6. a lower handle; 7. an upper handle; 8. a spring; 9. a positioning groove.

The specific implementation mode is as follows:

example 1:

a turbine lubricating oil tank negative pressure adjusting device comprises: fix handle components 2 and rotation on the dead lever and connect and be in the dead lever on transfer the aerofoil 3, handle components include handle 7 and lower handle 6, lower handle with last handle connect through the pivot, lower handle right-hand member with last handle between set up spring 8, the left end of lower handle be fixed with bolt 4, the bolt insert transfer the aerofoil arc surface in positioning groove 9.

Example 2:

according to the negative pressure adjusting device for the lubricating oil tank of the steam turbine in the embodiment 1, the middle part of the lower handle is in the shape of a circular arc 5.

The dead lever is fixed on lubricating-oil tank, and the air adjusting plate is located handle components lower part, and the air outlet of air adjusting plate covers on lubricating-oil tank's air exit, and after the oil tank negative pressure was adjusted and is accomplished, during equipment system normal operating, the spring force was used for keeping the handle state of opening, and the dowel pin is in the recess, prevents adjusting device skew.

When the negative pressure of the oil tank needs to be adjusted, the handle of the adjusting device is slightly pinched, the spring is compressed, the plug pin moves downwards and leaves the groove, and the handle is held at the moment to freely adjust the adjusting device.

After the adjustment is completed, the angle is determined, the handle grip is loosened, the spring extends, the positioning pin enters the groove again, negative pressure adjustment is completed, the oil tank negative pressure is stable, abnormal fluctuation cannot occur, the adjustment can be completed by lightly pinching the handle, manual loosening and tightening of the nut are not needed, simplicity, convenience and effortlessness are achieved, the adjustment is simple and effortless, after the appointed negative pressure is adjusted, loosening cannot occur to the adjusting device, the negative pressure cannot be changed, the workload of monitoring and operation is reduced, and the working efficiency is improved.

Claims

1. A turbine lubricating oil tank negative pressure adjusting device comprises: fix the handle assembly on the dead lever and rotate and connect and be in the dead lever on the air register board, characterized by: the handle assembly comprises an upper handle and a lower handle, the lower handle is connected with the upper handle through a rotating shaft, a spring is arranged between the right end of the lower handle and the upper handle, a bolt is fixed at the left end of the lower handle, and the bolt is inserted into a positioning groove of the arc surface of the air adjusting plate.

2. The negative pressure adjusting device for the lubricating oil tank of the steam turbine as claimed in claim 1, wherein: the middle part of the lower handle is arc-shaped.