阅读说明：本技术 一种盘车顶轴油泵控制系统 (Oil pump control system for top shaft of plate car ) 是由 赵德芳 于 2020-07-31 设计创作，主要内容包括：一种盘车顶轴油泵控制系统,包括主油箱、主油箱出油管路、一号顶轴油泵管路、二号顶轴油泵管路、顶轴油联箱、轴瓦顶轴油管路、轴瓦轴承箱和回油管路；该一种盘车顶轴油泵控制系统在顶轴油泵前加装盘车前置泵,满足顶轴油泵的必须汽蚀余量,油源取自主油箱底部在线滤油机入口处,运行顶轴油泵后转子被顶起4道,单人即可盘动整个转子,达到了节约汽轮机揭缸检修工作整体工期,有效提高揭缸检修工作效率的有益效果；顶起转子后模拟运行状态,无限接近转子运行状态,达到了不伤轴,不伤瓦的有益效果。(A top shaft oil pump control system of a plate car comprises a main oil tank, an oil outlet pipeline of the main oil tank, a first top shaft oil pump pipeline, a second top shaft oil pump pipeline, a top shaft oil header, a bearing bush top shaft oil pipeline, a bearing bush bearing box and an oil return pipeline; according to the control system of the disc top shaft oil pump, the disc front pump is additionally arranged in front of the top shaft oil pump, the necessary cavitation allowance of the top shaft oil pump is met, an oil source is taken from the inlet of the online oil filter at the bottom of the main oil tank, the rotor is jacked up for 4 times after the top shaft oil pump is operated, and the whole rotor can be coiled by one person, so that the overall construction period of the cylinder uncovering and overhauling work of a steam turbine is saved, and the beneficial effect of effectively improving the cylinder uncovering and overhauling work efficiency is achieved; the operation state is simulated after the rotor is jacked up, the operation state of the rotor is infinitely approached, and the beneficial effects of no damage to the shaft and the tile are achieved.)

1. The utility model provides a dish top axle oil pump control system, includes main tank, main tank play oil pipe way, a apical axis oil pump pipeline, No. two apical axis oil pump pipelines, apical axis oil header, axle bush apical axis oil pipe way, axle bush bearing box and return oil pipe way, characterized by: the main oil tank and the main oil tank go out oil pipe way intercommunication, a apical axis oil pump pipeline, No. two apical axis oil pump pipelines parallelly connected, just apical axis oil pump pipeline, No. two apical axis oil pump pipeline both ends communicate respectively the main oil tank go out oil pipe way with the apical axis oil header, the apical axis oil header with the axle bush bearing case between by axle bush apical axis oil pipe way intercommunication, the axle bush bearing case in have the axle bush, the axle bush bearing case with the main oil tank between return oil pipe way intercommunication.

2. A vehicle top axle oil pump control system as claimed in claim 1, wherein: the oil outlet pipeline of the main oil tank is sequentially connected with a barring front pump inlet valve and a barring front pump.

3. A vehicle top axle oil pump control system as claimed in claim 1, wherein: a apical axis oil pump pipeline and No. two apical axis oil pump pipeline structure the same, including apical axis oil pump oil inlet valve, apical axis oil pump entry filter screen, apical axis oil pump inlet valve, apical axis oil pump outlet valve, apical axis oil header inlet valve that connect gradually, apical axis oil pump outlet valve between have the recirculation pipeline, the recirculation pipeline on have the control flap that recirculates, the apical axis oil pump inlet valve of apical axis oil pump pipeline and No. two apical axis oil pump pipelines between by apical axis oil pump entry hookup door pipeline intercommunication, apical axis oil pump entry hookup door pipeline on have apical axis oil pump entry hookup door.

4. A vehicle top axle oil pump control system as claimed in claim 1, wherein: the oil pipeline of the bearing bush jacking shaft comprises an oil pressure adjusting valve and an inlet valve of a bearing bush bearing box which are sequentially connected.

5. A vehicle top axle oil pump control system as claimed in claim 1, wherein: the working process of the disc top axle oil pump control system comprises the following steps that top axle oil in a main oil tank enters a first top axle oil pump pipeline and a second top axle oil pump pipeline through a disc front pump inlet valve and a disc front pump on an oil outlet pipeline of the main oil tank, then enters a top axle oil pump oil inlet valve and a top axle oil pump inlet filter screen to filter impurities, the top axle oil pump inlet valve, the pressure of the top axle oil pump is increased, the top axle oil pump outlet valve and the top axle oil header inlet valve enter a top axle oil header, then enters each bearing bush bearing box through an oil pressure adjusting valve and a bearing bush bearing box inlet valve on a bearing bush top axle oil pipeline, an oil film is formed between a bearing bush in each bearing bush bearing box and an axle diameter, and then flows back to the main oil tank through an oil return pipeline; in the whole process, the inlet valve of the front pump of the barring, the inlet valve of the jacking shaft oil pump, the outlet valve of the jacking shaft oil pump, the inlet valve of the jacking shaft oil header, the inlet valve of the bearing bush bearing box, the inlet connecting valve of the jacking shaft oil pump and the recirculation control valve are normally operated and fully opened.

Technical Field

The invention relates to the field of steam turbine equipment maintenance tools of power enterprises, in particular to a control system for a shaft oil pump on a turning plate.

Background

The turning gear of the steam turbine has the function that before the rotor is driven by the steam turbine or after the rotor is stopped, the temperature of an upper cylinder is higher than that of a lower cylinder by steam entering or accumulated in a cylinder, so that the rotor is unevenly heated or cooled and generates bending deformation. Therefore, before the rotor is flushed and after the rotor is stopped, the rotor must be continuously rotated at a certain speed to ensure that the rotor is uniformly heated or cooled; in other words, turning before impact and after shutdown can eliminate rotor thermal bowing; meanwhile, the device has the functions of reducing the temperature difference between the upper cylinder and the lower cylinder and reducing the impulse torque, and can also check whether friction exists between the moving and static parts of the steam turbine and whether the lubricating system works normally before starting;

the rotor centering jigger needs to install and overhaul jiggers at the low-pressure cylinder, the workload is high, and temporary overhaul pins need to be installed for coiling the high-pressure rotor and the medium-pressure rotor.

Disclosure of Invention

The invention provides a disc-top shaft oil pump control system for solving the defects of the prior art, which is characterized in that a disc-top shaft oil pump is additionally arranged in front of a top shaft oil pump, so that the requirement of the cavitation allowance of the top shaft oil pump is met, high, middle and low pressure cylinders are respectively turned, an oil source is taken from the inlet of an online oil filter at the bottom of a main oil tank, a rotor is jacked up for 4 times after the top shaft oil pump is operated, and a single person can turn the whole rotor, so that the aims of saving the whole construction period of cylinder uncovering and overhauling work of a steam turbine and effectively improving the cylinder uncovering and overhauling work efficiency are fulfilled; the operation state is simulated after the rotor is jacked up, the operation state of the rotor is infinitely approached, and the purposes of not damaging a shaft and a tile are achieved.

The invention solves the technical problem by adopting the technical scheme that the oil-return device comprises a main oil tank, a main oil tank oil outlet pipeline, a first jacking oil pump pipeline, a second jacking oil pump pipeline, a jacking oil header, a bearing bush jacking oil pipeline, a bearing bush bearing box and an oil return pipeline, wherein the main oil tank is communicated with the main oil tank oil outlet pipeline;

the oil outlet pipeline of the main oil tank is sequentially connected with a barring front pump inlet valve and a barring front pump;

the structure of the first jacking oil pump pipeline is the same as that of the second jacking oil pump pipeline, taking the first jacking oil pump pipeline as an example, the jacking oil pump pipeline comprises a jacking oil pump oil inlet valve, a jacking oil pump inlet filter screen, a jacking oil pump inlet valve, a jacking oil pump outlet valve and a jacking oil header inlet valve which are sequentially connected, a recirculation pipeline is arranged between the jacking oil pump and the jacking oil pump outlet valve, a recirculation control valve is arranged on the recirculation pipeline, the jacking oil pump pipeline and the jacking oil pump inlet valve of the second jacking oil pump pipeline are communicated through a jacking oil pump inlet connecting door pipeline, and a jacking oil pump inlet connecting door is arranged on the jacking oil pump inlet connecting door pipeline;

the bearing bush jacking oil pipeline comprises an oil pressure adjusting valve and a bearing bush bearing box inlet valve which are sequentially connected;

the working process of the disc top axle oil pump control system comprises the following steps that top axle oil in a main oil tank enters a first top axle oil pump pipeline and a second top axle oil pump pipeline through a disc front pump inlet valve and a disc front pump on an oil outlet pipeline of the main oil tank, then enters a top axle oil pump oil inlet valve and a top axle oil pump inlet filter screen to filter impurities, the top axle oil pump inlet valve, the pressure of the top axle oil pump is increased, the top axle oil pump outlet valve and the top axle oil header inlet valve enter a top axle oil header, then enters each bearing bush bearing box through an oil pressure adjusting valve and a bearing bush bearing box inlet valve on a bearing bush top axle oil pipeline, an oil film is formed between a bearing bush in each bearing bush bearing box and an axle diameter, and then flows back to the main oil tank through an oil return pipeline; in the whole process, the inlet valve of the front pump of the barring, the inlet valve of the jacking shaft oil pump, the outlet valve of the jacking shaft oil pump, the inlet valve of the jacking shaft oil header, the inlet valve of the bearing bush bearing box, the inlet connecting valve of the jacking shaft oil pump and the recirculation control valve are normally operated and fully opened.

The invention has the beneficial effects that: according to the control system of the disc top shaft oil pump, the disc front pump is additionally arranged in front of the top shaft oil pump, the necessary cavitation allowance of the top shaft oil pump is met, an oil source is taken from the inlet of the online oil filter at the bottom of the main oil tank, the rotor is jacked up for 4 times after the top shaft oil pump is operated, and the whole rotor can be coiled by one person, so that the overall construction period of the cylinder uncovering and overhauling work of a steam turbine is saved, and the beneficial effect of effectively improving the cylinder uncovering and overhauling work efficiency is achieved; the operation state is simulated after the rotor is jacked up, the operation state of the rotor is infinitely approached, and the beneficial effects of no damage to the shaft and the tile are achieved. Description of the drawings:

FIG. 1 is a structural view of the present invention;

the invention is further described below with reference to the accompanying drawings.

The specific implementation mode is as follows:

the specific implementation mode of the invention is as follows: referring to fig. 1, the oil-water separator comprises a main oil tank 1, a main oil tank oil outlet pipeline 23, a first top shaft oil pump pipeline 4, a second top shaft oil pump pipeline 13, a top shaft oil header 12, a bearing bush top shaft oil pipeline 7, a bearing bush bearing box 11 and an oil return pipeline 10, wherein the main oil tank 1 is communicated with the main oil tank oil outlet pipeline 23, the first top shaft oil pump pipeline 4 and the second top shaft oil pump pipeline 13 are connected in parallel, two ends of the first top shaft oil pump pipeline 4 and the second top shaft oil pump pipeline 13 are respectively communicated with the main oil tank oil outlet pipeline 23 and the top shaft oil header 12, the top shaft oil header 12 is communicated with the bearing bush bearing box 11 through the bearing bush top shaft oil pipeline 7, a bearing bush is arranged in the bearing bush bearing box 11, and the bearing box 11 is communicated with the oil return pipeline 10 between the main oil tank 1;

referring to fig. 1, a barring front pump inlet valve 22 and a barring front pump 21 are sequentially connected to a main oil tank oil outlet pipeline 23;

referring to fig. 1, the first top shaft oil pump pipeline 4 and the second top shaft oil pump pipeline 13 have the same structure, taking the first top shaft oil pump pipeline 4 as an example, the first top shaft oil pump pipeline comprises a top shaft oil pump oil inlet valve 20, a top shaft oil pump inlet filter screen 19, a top shaft oil pump inlet valve 2, a top shaft oil pump 3, a top shaft oil pump outlet valve 5 and a top shaft oil coupling box inlet valve 6 which are connected in sequence, a recirculation pipeline 17 is arranged between the top shaft oil pump 3 and the top shaft oil pump outlet valve 5, the recirculation pipeline 17 is provided with a recirculation control valve 15, the first top shaft oil pump pipeline 4 and the top shaft oil pump inlet valve 2 of the second top shaft oil pump pipeline 13 are communicated through a top shaft oil pump inlet coupling valve pipeline 16, and the top shaft oil pump inlet coupling valve pipeline 16 is provided with a top shaft oil pump inlet coupling valve 18;

the bearing bush jacking oil pipeline 7 comprises an oil pressure adjusting valve 8 and a bearing bush bearing box inlet valve 9 which are sequentially connected;

referring to fig. 1, the working process of the disc-type top shaft oil pump control system includes that top shaft oil in a main oil tank 1 enters a first top shaft oil pump pipeline 4 and a second top shaft oil pump pipeline 13 through a disc-type front pump inlet valve 22 and a disc-type front pump 21 on a main oil tank oil outlet pipeline 23, then enters a top shaft oil coupling box 12 through a top shaft oil pump inlet valve 20 and a top shaft oil pump inlet filter screen 19 to filter impurities, enters a top shaft oil pump inlet valve 2, is boosted by a top shaft oil pump 3, enters each bearing bush bearing box 11 through a bearing bush top shaft oil pump inlet valve 8 and a bearing bush bearing box inlet valve 9 on a bearing bush top shaft oil pipeline 7, forms an oil film between a bearing bush and a shaft diameter in each bearing bush bearing box 11, and then flows back to the main oil tank 1 through an oil return pipeline 10; in the whole process, the inlet valve 22 of the barring front pump, the inlet valve 2 of the jacking shaft oil pump, the outlet valve 5 of the jacking shaft oil pump, the inlet valve 6 of the jacking shaft oil header, the inlet valve 9 of the bearing bush bearing box, the inlet connecting valve 18 of the jacking shaft oil pump and the recirculation control valve 15 are operated fully and normally.