CN202755355U

CN202755355U - Overhaul drainage structure of through-flow hydropower station

Info

Publication number: CN202755355U
Application number: CN2012204250888U
Authority: CN
Inventors: 时铁城; 王浩; 包冀邢; 蒋志勇; 王立成; 岳丽霞; 庞书聪; 朱伟君; 任智锋
Original assignee: China Water Resources Beifang Investigation Design and Research Co Ltd
Current assignee: China Water Resources Beifang Investigation Design and Research Co Ltd
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2013-02-27
Anticipated expiration: 2022-08-24

Abstract

The utility model discloses a maintenance drainage structure of a tubular hydropower station, which comprises a drainage corridor, a water collection well and drainage pipes respectively connected with the upper and lower reaches of the flow channel and the drainage corridor, and the upper and lower drainage pipes are respectively provided with drain valves. The drain valves of the upstream and downstream pipes are respectively arranged at the inlets of the upstream and downstream drain pipes. The utility model is mainly used for the tubular hydropower station on the silt-rich river. It has simple structure and high safety. The power generation efficiency of the power station.

Description

A kind of drainage for overhaul structure of tubular power station

Technical field

The utility model relates to the drainage for overhaul structure in power station, particularly a kind of drainage for overhaul structure that is mainly used in the tubular power station on the fully-loaded stream.

Background technology

The drainage for overhaul structure in power station is the common facility in the hydroelectric station design, as shown in Figure 1, according to the characteristics of tubular unit runner, for satisfying the unit maintenance drainage requirement, need respectively arrange in the runner upstream and downstream gutter in the prior art.Upstream row water pipe 1 ' drains into collector drain 6 ' to runner upstream ponding from 5 ' bottom, generator vertical support basis, downstream row water pipe 2 ' drains into collector drain 6 ' to downstream ponding from draft tube 7 ' lowest part, ponding converges to collecting well through collector drain, then drained by water pump, the upstream row water pipe vertically arranges upstream tube discharging valve 4 ' generator bottom enter hole 3 ' or water wheels motor-pumped well 8 ' upstream side, and the downstream row water pipe vertically arranges downstream tube discharging valve 14 ' in water wheels motor-pumped well 8 ' downstream.Upstream tube discharging valve 4 ' and downstream tube discharging valve 14 ' are separately positioned on the middle part of upstream row water pipe 1 ' and downstream row water pipe 2 ', and 13 ' is the runner upstream.

But when the drainage for overhaul structure in the tubular power station of said structure was used for tubular power station on the fully-loaded stream, gutter can not in time be got rid of runner ponding easily by the silt silting, and the unit maintenance time lengthening has been lost the power station power benefit.

The utility model content

The technical problems to be solved in the utility model is that a kind of simple in structure, safe tubular power station drainage for overhaul structure is provided.

The technical solution adopted in the utility model is: a kind of drainage for overhaul structure of tubular power station, comprise collector drain, collecting well, generator bottom enter hole, generator vertical support, the upstream row water pipe that is communicated with runner upstream and collector drain respectively, the downstream row water pipe that is communicated with draft tube and collector drain respectively, be arranged on the upstream tube discharging valve on the upstream row water pipe and be arranged on downstream discharging valve on the downstream row water pipe, described upstream tube discharging valve is arranged in the water inlet of upstream row water pipe, and the downstream tube discharging valve is arranged in the water inlet of downstream row water pipe.

Described generator bottom enter hole upstream extends to below, generator vertical support bottom, form installing space, described gutter water inlet is arranged on side, generator vertical support rear, the upstream tube discharging valve is arranged in the installing space of generator bottom enter hole formation below generator vertical support bottom, connect the water inlet that generator vertical support base plate stretches to the upstream row water pipe, at draft tube lower space setting operation gallery, operating gallery extends to downstream drainage water inlet tube mouth below, the downstream tube discharging valve is arranged on the end of operating gallery, connects the water inlet that the operating gallery top board stretches to the downstream row water pipe.

Described upstream tube discharging valve and downstream tube discharging valve adopt lower operated disc type valve.

Be respectively arranged with trashrack at the water inlet of described upstream row water pipe and the water inlet of downstream row water pipe.

The beneficial effects of the utility model are: the water inlet of offering the upstream row water pipe in side, tubular hydropower generator vertical support rear, generator bottom enter hole upstream extends the installation discharging valve, utilize the draft tube lower space to establish an operating gallery, operating gallery extends to downstream row water pipe import below, at the operating gallery end discharging valve is set, gutter can be by silt and dirt silting, can be timely during unit maintenance, get rid of easily the runner internal water accumulation, realize the controlled discharging of drainage for overhaul safety, efficient and the safety of fully-loaded stream tubular power station service work have greatly been improved, effectively shorten the repair time, increased the power benefit in power station.

Description of drawings

Fig. 1 is the sectional drawing of drainage for overhaul structural configuration mode in the tubular power station of prior art.

Fig. 2 is the plan view of the drainage for overhaul structure in tubular power station of the present utility model.

Fig. 3 is that A-A of Fig. 2 is to sectional drawing.

Fig. 4 is that B-B of Fig. 2 is to sectional drawing.

Fig. 5 is that C-C of Fig. 2 is to sectional drawing.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Shown in Fig. 2-5, the drainage for overhaul structure in tubular power station of the present utility model, comprise collector drain 6, collecting well 12, generator bottom enter hole 3, generator vertical support 5, the upstream row water pipe 1 that is communicated with runner upstream 13 and collector drain 6 respectively, the downstream row water pipe 2 that is communicated with draft tube 7 and collector drain 6 respectively, be arranged on upstream tube discharging valve 4 and the downstream discharging valve 14 that is arranged on the downstream row water pipe 2 on the upstream row water pipe 1, described upstream tube discharging valve 4 is arranged in the water inlet 10 of upstream row water pipe, and downstream tube discharging valve 14 is arranged in the water inlet 15 of downstream row water pipe.

Described generator bottom enter hole 3 upstream extends to below, generator vertical support 5 bottoms, form installing space, described gutter water inlet 10 is arranged on side, generator vertical support 5 rear, upstream tube discharging valve 4 is arranged in the installing space that generator bottom enter hole 3 forms below generator vertical support 5 bottoms, connect the water inlet 10 that generator vertical support 5 base plates stretch to the upstream row water pipe, at draft tube 7 lower space setting operation gallerys 9, operating gallery 9 extends to downstream row water pipe 2 water inlets below, downstream tube discharging valve 14 is arranged on the end of operating gallery 9, connects the water inlet 15 that operating gallery 9 top boards stretch to the downstream row water pipe.

Described upstream tube discharging valve 4 and downstream tube discharging valve 14 adopt lower operated disc type valve.

Be respectively arranged with trashrack 11 at the water inlet 10 of described upstream row water pipe and the water inlet 15 of downstream row water pipe.

Present embodiment comprises three groups of separate upstream row water pipes 1 and downstream row water pipe 2, every group of corresponding factory building unit of gutter, upstream row water pipe 1 is communicated with runner upstream 13 and collector drain 6 collecting wells 12, downstream row water pipe 2 is communicated with draft tube 7 and collector drain 6 collecting wells 12, every gutter is all installed a

discharging valve

4,14, and discharging valve is arranged in the gutter import, prevents that gutter is by the silt silting.

Present embodiment middle and upper reaches gutter 1 is offered water inlet 10 in side, generator vertical support 5 rear, and generator bottom enter hole 3 upstream extends installation discharging valve 4; Downstream row water pipe 2 utilizes draft tube 7 lower space to establish an operating gallery 9, and operating gallery 9 extends to downstream row water pipe 2 water inlets below from water wheels motor-pumped well 8 downstream sidewalls, at the operating gallery 9 terminal discharging valves 14 of installing; For preventing that foreign material silt gutter up, the trashrack 11 of steel work processing is set at the gutter water inlet.

For guaranteeing Power station structure safety, generator bottom enter hole 3 upstream extension need strengthen arrangement of reinforcement, gutter water inlet 10 will be avoided generator vertical support embedded part and downstream will guarantee to leave enough concrete structure thickness (should greater than 500mm), guarantee to leave enough concrete structure thickness (should greater than 1500mm) between draft tube 7 and the operating gallery 9, collector drain 6 can suitably reduce and guarantees to leave enough concrete structure thickness (should greater than 500mm) between elevation and the operating gallery 9.

Above-described embodiment only is used for illustrating technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be equal variation or the modification that spirit that all the utility model disclose is done, still drop in the claim of the present utility model.

Claims

1. A maintenance and drainage structure for a tubular hydropower station, including a drainage corridor (6), a water collection well (12), a manhole at the lower part of the generator (3), a vertical support for the generator (5), and the upstream of the flow channel respectively. (13) The upstream drainage pipe (1) connected to the drainage gallery (6), the downstream drainage pipe (2) respectively connected to the draft pipe (7) and the drainage gallery (6), and the upstream drainage pipe (1) The upstream pipe drain valve (4) on the top and the downstream drain valve (14) arranged on the downstream drain pipe (2), characterized in that: the upstream pipe drain valve (4) is arranged at the water inlet (10) of the upstream drain pipe ), the downstream pipe drain valve (14) is arranged at the water inlet (15) of the downstream drain pipe.

2. The maintenance and drainage structure of the tubular hydropower station according to claim 1, characterized in that: the manhole (3) at the lower part of the generator extends upstream to the bottom of the vertical support (5) of the generator, forming an installation space , the drain pipe water inlet (10) is set on the rear side of the generator vertical support (5), and the upstream pipe drain valve (4) is set on the manhole (3) at the lower part of the generator below the bottom of the generator vertical support (5) In the formed installation space, the vertical support (5) bottom plate of the penetrating generator extends to the water inlet (10) of the upstream drain pipe, and an operation corridor (9) is set in the space below the draft tube (7), and the operation corridor (9) extends Below the water inlet of the downstream drain pipe (2), the downstream pipe discharge valve (14) is arranged at the end of the operation corridor (9), and runs through the top plate of the operation corridor (9) to the water inlet (15) of the downstream drain pipe.

3. The inspection and drainage structure of the tubular hydropower station according to claim 2, characterized in that: the upstream pipe water discharge valve (4) and the downstream pipe water discharge valve (14) adopt a down-operated disc valve.

4. The maintenance and drainage structure of the tubular hydropower station according to claim 1, 2 or 3, characterized in that: the water inlet (10) of the upstream drainage pipe and the water inlet (15) of the downstream drainage pipe are respectively set There are trash racks (11).