CN203640780U

CN203640780U - Turbine self-starting oil supply device

Info

Publication number: CN203640780U
Application number: CN201320889244.0U
Authority: CN
Inventors: 王春晓; 邓同久; 范臣; 郭秀东
Original assignee: Zibo Sangte Power Equipment Co Ltd
Current assignee: Zibo Sangte Power Equipment Co Ltd
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-06-11
Anticipated expiration: 2023-12-31

Abstract

The utility model relates to a turbine self-staring oil supply device, and belongs to the field of turbines. The turbine self-staring oil supply device comprises a self-starting main air valve, wherein the self-starting main air valve comprises a sealed high pressure oil tube. A spring is arranged on the bottom face of the high pressure oil tube, a piston is arranged at the upper end of the spring, a high pressure oil cavity is formed by the piston and the high pressure oil tube, an oil pipe is communicated with the high pressure oil cavity, a valve lever is fixed on the lower bottom face of the piston, the valve lever is arranged in a steam pipe, the steam pipe is connected with a small turbine, the small turbine is connected with an oil pump in a driving mode, and the oil pump is connected with the oil pipe, so that tile burning is prevented.

Description

Steam turbine self-starting oil supplying device

Technical field

The utility model relates to a kind of steam turbine self-starting oil supplying device, belongs to steam turbine field.

Background technique

The lubricating oil system of Large Steam Turbine Sets is by extraneous electric oil pump or by self main oil pump fuel feeding; in the time of external power failure or the shutdown of steam turbine hypervelocity; extraneous electric oil pump is not worked; the slow reduction of speed of steam turbine; now self main oil pump charge oil pressure deficiency, can not meet self-lubrication, and the external world is without oil supply system; now steam turbine lubricates and causes tile kilning at reduction of speed process intermediate bushing non lubricant oil, addresses the above problem and roughly has at present three kinds of approach:

The first is that scene arranges Manual Oil Pumps Valves, and in the time that the problems referred to above occur, personnel are to the on-the-spot Manual Oil Pumps Valves that rotates to steam turbine fuel feeding, and this way needs personnel's execute-in-place, and has operation situation generation not in time;

Top petrol tank is set when the second, and in the time that the problems referred to above occur, in top petrol tank, lubricant oil is subject to about gravity to flow into lubricant oil in trend turbine bearing pad, and this way is limited by on-the-spot place, and has the requirements such as height, insulation, the many scenes installation that do not satisfy the requirements;

The third way is to increase direct current oil pump, direct current operation of oil pump in the time that the problems referred to above occur, and to steam turbine, for lubricant oil, this way scene need possess DC electrical source, and investment is large, regular maintenance is loaded down with trivial details.

Model utility content

According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of steam turbine self-starting oil supplying device is provided.

Steam turbine self-starting oil supplying device described in the utility model, comprise from opening throttle, certainly open the high pressure oil cylinder that throttle comprises sealing, high pressure oil cylinder is established spring on bottom surface, piston is established in spring upper end, piston and high pressure oil cylinder form high-voltage oil cavity, and oil pipe is connected with high-voltage oil cavity, fixed valve bar on piston bottom surface, valve lever is arranged in steam tube, steam tube connects small turbine, the small turbine oil pump that is in transmission connection, oil pump connected pipes.

Quick-closing valve is also set on steam tube, and quick-closing valve can be blocked fast steam in the time of incoming call, and stall small turbine, powers by ABAP Adapter oil feed pump.

Solenoid valve is set on oil pipe, operation of oil pump when incoming call, in oil pipe, oil pressure rises, and certainly opens throttle and turn-offs, and solenoid valve is charged closes, and maintains from opening high oil pressure in throttle, keeps turn-offing from opening throttle.

Working principle and process:

When work, solenoid valve is charged closes, in opening throttle, maintain high oil pressure, valve lever turn-offs, quick-closing valve is opened, when power failure, large steam turbine due to inertia needs a period of time could stall, now oil pump decommissions, large steam-turbine lubrication deficient oil supply, solenoid valve power-off is opened, be back to oil pipe from opening throttle inner high voltage oil, high-voltage oil cavity oil pressure reduces, spring action valve bar moves upward, steam enters small turbine along steam tube, small turbine drives operation of oil pump, give the not large steam turbine fuel feeding of complete stall, when incoming call, quick-closing valve turn-offs rapidly, small turbine stall, oil pump is worked by external power source, in opening throttle, high oil pressure recovers, solenoid valve turn-offs, valve lever keeps closing.

The beneficial effect that the utility model compared with prior art had is:

Steam turbine self-starting oil supplying device described in the utility model, without manually, opens automatically, is swift in response, and wide accommodation, without requirements such as height, insulations, simple in structure, to invest littlely, efficiency is high.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment schematic diagram.

In figure: 1, oil pipe; 2, steam tube; 3, solenoid valve; 4, certainly open throttle; 5, high pressure oil cylinder; 6, piston; 7, spring; 8, valve lever; 9, quick-closing valve; 10, small turbine; 11, oil pump.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:

As shown in Figure 1, steam turbine self-starting oil supplying device described in the utility model, comprises from opening throttle 4, from the high pressure oil cylinder 5 that opens throttle 4 and comprise sealing, high pressure oil cylinder is established spring 7 on 5 bottom surfaces, and piston 6 is established in spring 7 upper ends, and piston 6 forms high-voltage oil cavity with high pressure oil cylinder 5, oil pipe 1 is connected with high-voltage oil cavity, fixed valve bar 8 on piston 9 bottom surfaces, valve lever 8 is arranged in steam tube 2, and steam tube 2 connects small turbine 10, small turbine 10 oil pump 11 that is in transmission connection, oil pump 11 connected pipes 1.

Quick-closing valve 9 is also set on steam tube 2, and quick-closing valve 9 can be blocked fast steam in the time of incoming call, and stall small turbine 10, powers by ABAP Adapter oil feed pump 11.

Solenoid valve 3 is set on oil pipe 1, and when incoming call, oil pump 11 is worked, and the interior oil pressure of oil pipe 1 rises, and certainly opens throttle 4 and turn-offs, and solenoid valve 3 is charged closes, and maintains from opening the interior high oil pressure of throttle 4, keeps turn-offing from opening throttle 4.

Working principle and process:

When work, solenoid valve 3 is charged closes, in opening throttle 4, maintain high oil pressure, valve lever 8 turn-offs, quick-closing valve 9 is opened, when power failure, large steam turbine due to inertia needs a period of time could stall, now oil pump 11 has decommissioned, large steam-turbine lubrication deficient oil supply, solenoid valve 3 power-off are opened, be back to oil pipe 1 from opening throttle 4 inner high voltage oil, high-voltage oil cavity oil pressure reduces, spring 7 acts on valve lever 8 and moves upward, steam enters small turbine 10 along steam tube 2, small turbine 10 drives oil pump 11 to work, give the not large steam turbine fuel feeding of complete stall, when incoming call, quick-closing valve 9 turn-offs rapidly, small turbine 10 stalls, oil pump 11 is worked by external power source, recover from opening the interior high oil pressure of throttle 4, solenoid valve 3 turn-offs, valve lever 8 keeps closing.

Claims

1. a steam turbine self-starting oil supplying device, it is characterized in that: comprise from opening throttle (4), from the high pressure oil cylinder (5) that opens throttle (4) and comprise sealing, high pressure oil cylinder (5) is established spring (7) on bottom surface, piston (6) is established in spring (7) upper end, piston (6) forms high-voltage oil cavity with high pressure oil cylinder (5), oil pipe (1) is connected with high-voltage oil cavity, fixed valve bar (8) on piston (9) bottom surface, valve lever (8) is arranged in steam tube (2), steam tube (2) connects small turbine (10), small turbine (10) oil pump (11) that is in transmission connection, oil pump (11) connected pipes (1).

2. steam turbine self-starting oil supplying device according to claim 1, is characterized in that: quick-closing valve (9) is also set on steam tube (2).

3. steam turbine self-starting oil supplying device according to claim 1, is characterized in that: solenoid valve (3) is set on oil pipe (1).