CN203362238U - Main oil pump installation structure of turbine - Google Patents
Main oil pump installation structure of turbine Download PDFInfo
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- CN203362238U CN203362238U CN 201320306831 CN201320306831U CN203362238U CN 203362238 U CN203362238 U CN 203362238U CN 201320306831 CN201320306831 CN 201320306831 CN 201320306831 U CN201320306831 U CN 201320306831U CN 203362238 U CN203362238 U CN 203362238U
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- main oil
- turbine
- oil pump
- pump
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Abstract
The utility model relates to a main oil pump installation structure of a turbine. The main oil pump installation structure of the turbine aims at providing an installation structure capable of making a main oil pump operate safely and normally, thus, the oil supplying requirement of a turbine adjusting system and a lubricating oil system of the turbine is ensured and reliable and safe operation of a turbine power generating unit is fully ensured. The main oil pump installation structure of the turbine comprises a gear box, the main oil pump, a turbine front base frame fixed on a turbine installation foundation and a turbine front bearing seat installed on the turbine front base frame through a sliding pin system. The main oil pump installation structure of the turbine is characterized in that a shell of the gear box is fixed on the front end face of the turbine front bearing seat, a drive shaft of the gear box and a main shaft of the turbine are coaxially arranged and connected through a coupler. The tail end of a pump shaft of the gear box penetrates into the main oil pump and is provided with a pump wheel of the main oil pump. An oil inlet and an oil outlet of the main oil pump are axially arranged along the pump wheel. The oil inlet and the oil outlet of the main oil pump are connected with an oil inlet pipe and an oil outlet pipe respectively through flexible pipe connecting devices.
Description
Technical field
The utility model relates to the steam turbine technology field, is specially the mounting structure that is applicable to main oil pump on the reactionary style back pressure turbine.
Background technique
Along with new energy-saving and emission-reduction policy is carried out by country, Thermal Power Enterprises is increasing to the demand of large-scale back pressure turbine.For the Turbo-generator Set of this type, the user usually can select the form that is driven main oil pump by turbine spindle on the oil supplying device of regulating system and lubricating oil system.This kind of mounting structure that occasion is used, wherein containing speed-change gear box, main oil pump, hydraulic pressure rotating speed signalling generator and coupling, be that the steam turbine spindle nose connects the gear-box in mounting structure, gear-box adapts the working speed of main oil pump and steam turbine operation rotating speed by its gear, thereby provides oil sources for unit; The function of hydraulic pressure rotating speed signalling generator is that the turbine speed signal measurement is converted to the output of hydraulic pressure signal.
In current mounting structure design application, speed-change gear box and front-end bearing pedestal are fixedly mounted on respectively on the mounting of the front bearing of steam turbine, the gear-box main shaft connects with turbine spindle by diaphragm type coupler, because the axle centering center small variations in running very easily causes this coupling fracture, cause the main oil pump cisco unity malfunction that runs out of steam, need to improve gear-box installation and with the centering that connects of main shaft.
In addition, main oil pump turnover oil is taken over directly and the main oil pump rigid joint, because the oil outer pipeline is arranged unreasonable factor, when the hot operation of steam turbine, there is interactional stress between pipeline and front bearing, also easily cause the bite of the front bearing sliding key system of steam turbine or the problems such as booster of external oil pipe, need design configurations that the mounting structure of Flexible Main oil pump adapter system is arranged.
The model utility content
The purpose of this utility model is to overcome the deficiency that the above-mentioned background technology exists, a kind of improvement of turbine main oil-pump mounting structure is provided, this mounting structure should be able to make the safety of main oil pump normally move, thereby guarantee the oil require that supplies of steam turbine control system and lubricating oil system, the reliable and secure operation of the Turbo-generator Set fully ensured.
The utility model proposes following technological scheme:
The turbine main oil-pump mounting structure, comprise gear-box, main oil pump, be fixed on steam turbine and mounting before the steam turbine on basis be installed, by sliding key system, be arranged on the steam turbine front-end bearing pedestal on mounting before this steam turbine, it is characterized in that: the housing of described gear-box is fixed on the front-end face of steam turbine front-end bearing pedestal, the live axle of gear-box is coaxially arranged with turbine spindle and be connected by coupling, and the pump shaft end of gear-box stretches in main oil pump and the pump impeller of main oil pump is installed; The filler opening of described main oil pump and oil outlet be axial arranged along pump impeller all, and the filler opening of main oil pump, oil outlet are connected with oil inlet pipe, the oil outlet tube of main oil pump by the flexible connecting pipe device respectively.
Described flexible connecting pipe device comprises the main oil pump link be fixed on the front mounting of steam turbine, offer two through holes coaxially arranged with described filler opening, oil outlet respectively on this main oil pump link, one end of described through hole is connected with oil inlet pipe or the oil outlet tube of main oil pump, and the other end is connected with filler opening or the oil outlet of described main oil pump by one section bellows.
Described main oil pump link is shaped with the oil back chamber be connected with return tube, offers described two through holes on the link of an end of this oil back chamber, and the other end is provided with capping, offers the mounting hole corresponding with two through hole in described capping; One end of described bellows docks with through hole, and the other end is connected with a rigid pipe, and rigid pipe was connected with filler opening or the oil outlet of main oil pump after passing through described mounting hole, between the outer wall of rigid pipe and described capping, was provided with seal ring.
Working principle of the present utility model is: working principle of the present utility model and conventional turbine main oil-pump are similar, difference is: at first, the housing of the utility model middle gear case is fixed on the front-end face of steam turbine front-end bearing pedestal, gear-box and steam turbine front-end bearing pedestal are integrated, avoid being in operation and produce respectively different micro-displacements, cause coupling centering to be worsened, produce fracture accident; Secondly, in the utility model, between the oil inlet pipe and filler opening of oil pump, and by the flexible connecting pipe device, be connected between oil outlet tube and oil outlet, when the steam turbine front-end bearing pedestal and turbine spindle expands and when movable forward along sliding key system, the bellows of flexible connecting pipe device can have a certain amount of flexible, eliminate the active force of steam turbine, because the position of main oil pump link is fixed, so the position of oil inlet pipe, oil outlet tube do not change, and guarantees the safe operation of steam turbine; Finally, in the utility model, the filler opening of oil pump and oil outlet are arranged vertically, are convenient to the external oil pipe connection and eliminate the active force between oil-piping and steam turbine set.
The beneficial effects of the utility model are: the utility model is creatively introduced the flexible connecting pipe device main oil pump mounting structure of Turbo-generator Set, this design makes gear-box and steam turbine front-end bearing pedestal to be integrated, there is no axial displacement between the live axle of gear-box and turbine spindle, flexible coupling does not bear axial force, and the main cause that produces the flexible coupling fracture accident is exactly that coupling bears axial alternating force and fatigue, therefore the utility model can be avoided the main shaft of the live axle of gear-box and steam turbine to be in operation and produce respectively different micro-displacements, cause coupling centering to be worsened, the flexible connecting pipe device can make the free expansion of steam turbine front-end bearing pedestal, avoid the interference to sliding key system of oil inlet pipe, oil outlet tube, main oil pump can normally move safely, has guaranteed the oil require that supplies of steam turbine control system and lubricating oil system, the reliable and secure operation of the Turbo-generator Set fully ensured.
The accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present utility model.
Fig. 2 be in Fig. 1 A-A to the sectional structure schematic diagram.
Fig. 3 is that the B of Fig. 2 is to schematic diagram.
Fig. 4 is the assembly structure enlarged diagram of oil pump and gear-box in Fig. 1.
Fig. 5 is the main TV structure schematic diagram of the utility model middle gear case.
Fig. 6 is the plan structure schematic diagram of the utility model middle gear case.
Fig. 7 is the sectional structure schematic diagram of steam turbine front-end bearing pedestal in the utility model.
Fig. 8 is that the C of Fig. 7 is to structural representation.
Fig. 9 is the structural representation of the front mounting of steam turbine in Fig. 1.
Figure 10 be in Fig. 9 D-D to the sectional structure schematic diagram.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1, Figure 2, Figure 3 shows, the turbine main oil-pump mounting structure, comprise gear-box 5, main oil pump 4, hydraulic pressure rotating speed signalling generator 18, be fixed on steam turbine and mounting 1 before the steam turbine on basis be installed, be sliding track mechanism by sliding key system 21() be arranged on the steam turbine front-end bearing pedestal 12 on mounting before this steam turbine.
In the utility model, the housing 5-1 of described gear-box is fixed on the front-end face of steam turbine front-end bearing pedestal, the live axle 15 of gear-box is coaxially arranged with turbine spindle 14 and be connected (adopting conventional diaphragm type coupler) by coupling 13, pump shaft 16 ends of gear-box stretch in main oil pump and the pump impeller 17 of main oil pump are installed, and the rotating speed signalling generator axle 19 of gear-box is connected the tach signal with output gear case with described hydraulic pressure rotating speed signalling generator.Wheelbase between the live axle of the utility model middle gear case, pump shaft and rotating speed signalling generator axle is fixed, the size of gear box casing 5-1 can be designed to fixed dimension, when the different steam turbine set of rotating speed adopts gear-box, only need to select different live axles, pump shaft and rotating speed signalling generator axle coupling, gear box casing and other parts do not need redesign, gear ratio by driving gear 15-1, driven gear 16-1,19-1 changes, realize different gear ratio requirements, working speed and the steam turbine operation rotating speed of main oil pump are adapted, realize standardized designs.
The filler opening of described main oil pump and oil outlet are all along axial arranged (oil outlet of conventional main oil pump is along radially fuel-displaced) of pump impeller, be convenient to external oil pipe and connect and eliminate the active force between oil-piping and steam turbine set, and the filler opening 4-1 of main oil pump, oil outlet 4-2 are connected with oil inlet pipe 2, the oil outlet tube 3 of main oil pump by the flexible connecting pipe device respectively.The dead point of steam turbine set is positioned at the steam turbine rear support, when steam turbine normally moves, unit is installed basis relatively, main oil pump and gear-box expand forward in company with turbine spindle and front-end bearing pedestal thereof, main oil pump filler opening, the relative unit of oil outlet are movable when static, for this reason, by the flexible connecting pipe device, eliminate the active force between outside connected pipes and steam turbine, guarantee the safe operation of steam turbine.
Described flexible connecting pipe device comprises the main oil pump link 7 be fixed on the front mounting of steam turbine, offer two through holes coaxially arranged with described filler opening, oil outlet respectively on this main oil pump link, one end of described through hole is connected with oil inlet pipe or the oil outlet tube of main oil pump, and the other end is connected with filler opening or the oil outlet of described main oil pump by one section bellows 6.
Described main oil pump link is shaped with the oil back chamber 7-1(be connected with return tube 11 and prevents that from there is leakage of oil the bellows joint), offer described two through holes on the link of one end of this oil back chamber, the other end is provided with capping 8, offers the mounting hole corresponding with two through hole in described capping; One end of described bellows docks with through hole, and the other end is connected with a rigid pipe 9, and rigid pipe was connected with filler opening or the oil outlet of main oil pump after passing through described mounting hole, between the outer wall of rigid pipe and described capping, was provided with seal ring 10.The effect of bellows is that (during axial expansion, rigid pipe slides in mounting hole for the axial expansion displacement of compensation main oil pump relative turbine body, compress bellows), main oil pump link fixedly bellows is also realized converting movable filler opening, oil outlet to static filler opening, oil outlet, the integrated bellows of described bellows recommend adoption band sheath is installed and security of operation for convenient.
Before steam turbine, mounting is fixed on steam turbine by the bolt group and basis is installed above, and the steam turbine front-end bearing pedestal is arranged on the front mounting of steam turbine, and by sliding pin system of steam turbine, before the relative steam turbine of steam turbine front-end bearing pedestal, mounting can send certain axial displacement; The main oil pump link is fixedly mounted on the front mounting of steam turbine, by the bellows that connects the main oil pump hydraulic fluid port, outwards provides main oil pump turnover oil connecting pipe pipeline joint.
The utility model structure applicability is strong, after model utility completes, can promote the use of in association area.Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.If these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Also has seal ring 20 in figure.
Claims (3)
1. turbine main oil-pump mounting structure, comprise gear-box (5), main oil pump (4), be fixed on steam turbine the front mounting (1) of steam turbine on basis is installed, be arranged on the steam turbine front-end bearing pedestal (12) on the front mounting of this steam turbine by sliding key system (21), it is characterized in that: the housing of described gear-box (5-1) is fixed on the front-end face of steam turbine front-end bearing pedestal, the live axle of gear-box (15) is coaxially arranged with turbine spindle (14) and be connected by coupling (13), the pump shaft end of gear-box stretches in main oil pump and the pump impeller (17) of main oil pump is installed, the filler opening of described main oil pump (4-1) and oil outlet (4-2) be axial arranged along pump impeller all, and the filler opening of main oil pump, oil outlet are connected with oil inlet pipe (2), the oil outlet tube (3) of main oil pump by the flexible connecting pipe device respectively.
2. turbine main oil-pump mounting structure according to claim 1, it is characterized in that: described flexible connecting pipe device comprises the main oil pump link (7) be fixed on the front mounting of steam turbine, offer two through holes coaxially arranged with described filler opening, oil outlet respectively on this main oil pump link, one end of described through hole is connected with oil inlet pipe or the oil outlet tube of main oil pump, and the other end is connected with filler opening or the oil outlet of described main oil pump by one section bellows (6).
3. turbine main oil-pump mounting structure according to claim 2, it is characterized in that: described main oil pump link is shaped with the oil back chamber (7-1) be connected with return tube, offer described two through holes on the link of one end of this oil back chamber, the other end is provided with capping (8), offers the mounting hole corresponding with two through hole in described capping; One end of described bellows docks with through hole, and the other end is connected with a rigid pipe (9), and rigid pipe was connected with filler opening or the oil outlet of main oil pump after passing through described mounting hole, was provided with seal ring (10) between the outer wall of rigid pipe and described capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306831 CN203362238U (en) | 2013-05-30 | 2013-05-30 | Main oil pump installation structure of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306831 CN203362238U (en) | 2013-05-30 | 2013-05-30 | Main oil pump installation structure of turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362238U true CN203362238U (en) | 2013-12-25 |
Family
ID=49810023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320306831 Withdrawn - After Issue CN203362238U (en) | 2013-05-30 | 2013-05-30 | Main oil pump installation structure of turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277152A (en) * | 2013-05-30 | 2013-09-04 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN104406031A (en) * | 2014-11-18 | 2015-03-11 | 湖南崇德工业科技有限公司 | Oil returning system of rotating machinery circulation oil lubricating bearing |
-
2013
- 2013-05-30 CN CN 201320306831 patent/CN203362238U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277152A (en) * | 2013-05-30 | 2013-09-04 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN103277152B (en) * | 2013-05-30 | 2014-11-12 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN104406031A (en) * | 2014-11-18 | 2015-03-11 | 湖南崇德工业科技有限公司 | Oil returning system of rotating machinery circulation oil lubricating bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20141112 |
|
| RGAV | Abandon patent right to avoid regrant |