CN201661405U

CN201661405U - Novel rotating wheel upper leak-proof ring

Info

Publication number: CN201661405U
Application number: CN2009202674357U
Authority: CN
Inventors: 吴文政
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-16
Filing date: 2009-10-16
Publication date: 2010-12-01
Anticipated expiration: 2019-10-16

Abstract

The utility model relates to a novel rotating wheel upper leak-proof ring. The upper leak-proof ring is arranged on the upper crown of a rotating wheel; the upper leak-proof ring is arranged between the upper crown of the rotating wheel and a front cover board; the upper leak-proof ring is provided with a positioning female end; the positioning female end can achieve the effect of accurately being positioned with the upper crown of the rotating wheel; a plurality of screw fixing holes are formed on the edge of the positioning female end; hexagon socket roundhead screws are connected with the rotating wheel through the screw fixing holes; the outer side of the upper leak-proof ring is tightly jointed with the front cover board; the outer diameter of the upper leak-proof ring is processed into right handed thread or left handed thread; and when the rotating wheel rotates, the upper leak-proof ring can realize the effect of inverse water sealing, so as to reduce the flow loss. The novel rotating wheel upper leak-proof ring can prolong the service lives of all relevant parts of a water turbine, and reduce the operational management cost of a user.

Description

Seal ring on a kind of novel runner

Technical field

The utility model belongs to the turbine parts field, relates to seal ring on a kind of novel runner.

Background technique

Water turbine belongs to hydroelectric facility, is widely used in places such as water power plant, it be a kind of can be the transformation of energy of current the dynamic power machine of rotating mechanical energy, finally drive the generating of generator.The water turbine that generally uses is when normal operation at present, because there are the bigger problem in cavity in the crown of its runner and front shroud, will make the local space of runner periphery form negative pressure state like this, the part that the existence of this state will cause the runner periphery at short notice is by cavitation and cause being damaged, silt can enter with current, follow the high speed rotating of runner, can cause cover plate by serious sand cutting, even can cause the cover plate perforation, situation such as leak, just can only change in this case, will increase the expense of user aspect operation management like this cover plate and nipple and other correlated parts.

Summary of the invention

For the part that solves above-mentioned existing runner periphery easily by sand cutting and cause being damaged, problem that the operation management cost is high, the utility model provides seal ring on a kind of novel runner, it has remedied the bigger defective of crown and the existing cavity of front shroud of runner by the mode of screw thread sealing, make that this space is dwindled greatly, enter thereby reduce the current that have silt, the part of having avoided the runner periphery is by sand cutting.

In order to achieve the above object, the utility model adopts following concrete technological scheme: seal ring on a kind of novel runner, as one of improvement of the present utility model, it has cancelled rotation labyrinth ring and fixing two parts of labyrinth ring on the basis of former constituent element, as another improvement of the present utility model, its structure characteristic is, crown place at runner is provided with seal ring, last seal ring is arranged between the crown and front shroud of runner, last seal ring is provided with the location inner stopper, the location inner stopper can play the effect with the crown precision positioning of runner, the edge of location inner stopper is provided with a plurality of screw fixed holes, link with interior hexagonal round head bolt and runner by the screw fixed hole, the outer avris and the front shroud of last seal ring fit tightly, and last seal ring external diameter is processed into right-handed thread or left-handed thread, when runner rotates, last seal ring will play the effect of reverse sealing, reduces the current loss.

The beneficial effects of the utility model are the working life that it can prolong each correlated parts of water turbine, reduce user's operation management cost.

The utility model is described in further detail below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is the utility model side cross-sectional view;

Fig. 2 for the utility model in water turbine with other constituent element cross-sectional view that is connected.

Among the figure: the 1-spiral case, the 2-back shroud, the 3-vacuum gauge, 4-vacuum gauge outfit, the 5-seal ring, the 6-stud, the 7-hexagon nut, the 8-pad, seal ring under the 9-, the 10-stud, the 11-hexagon nut, the 12-nipple, the 13-tail cone, the 14-gate valve, the 15-hexagon head bolt, the 16-hexagon nut, the 17-round nut, the 18-blowdown pipe, the 19-pad, the 20-hexagon head bolt, the 21-hexagon nut, 22-blowdown pipe support, hexagonal round head bolt in the 23-, the 24-runner, 25-transfers the ring screw, the 26-hand hole cover, the 27-hexagon head bolt, the 28-pad, the 29-Discharging bent-tube, the 30-draft tube, the 31-hexagon head bolt, the 32-hand hole cover, the 33-pad, the 34-front shroud, the 35-speed ring, the 36-small rocker, 37-speed ring axle sleeve, the 38-droop adjustment screw, the 39-hexagon thin nut, 40-stator axle sleeve, the 41-seal ring, 42-stator differential, the 43-hexagon head bolt, the 44-straight pin, the last seal ring of 45-, the 46-backplate, the 47-hexagon head bolt, the 48-pad, 49-drain pipe joint, the 50-capping, 51-thread seal circle, the 52-hexagon head bolt, the 53-hexagon nut, the 54-water-throwing disk, the 55-hexagon head bolt, the 56-hexagon nut, the 57-main shaft, 58-main shaft differential, the 59-stud, the 60-hexagon nut, the 61-asbestos rope, the 62-key, the 63-hexagon head bolt, 64-speed governing gudgeon cover, the 65-stator, the 66-hexagon head bolt, 67-copper water is chewed

Embodiment

As Fig. 1, shown in Figure 2, seal ring on a kind of novel runner, as one of improvement of the present utility model, it has cancelled rotation labyrinth ring and fixing two parts of labyrinth ring on the basis of former constituent element, as another improvement of the present utility model, its structure characteristic is, crown place at runner 24 is provided with seal ring 45, last seal ring 45 is arranged between the crown and front shroud 34 of runner 24, last seal ring 45 is provided with location inner stopper 451, the edge of location inner stopper 451 is provided with a plurality of screw fixed holes 452, link with runner 24 by the interior hexagonal round head bolt 23 of screw fixed hole 452 usefulness, the outer avris and the front shroud 34 of last seal ring 45 fit tightly, last seal ring 45 external diameters are processed into right-handed thread or left-handed thread, when runner 24 rotated, last seal ring 45 will play the effect of reverse sealing, reduced the current loss.

Claims

1. seal ring on the novel runner, it is characterized in that, be provided with seal ring (45) at the crown place of runner (24), rotation labyrinth ring and fixing two parts of labyrinth ring have been cancelled, last seal ring (45) is provided with location inner stopper (451), last seal ring (45) is arranged between the crown and front shroud (34) of runner (24), the edge of location inner stopper (451) is provided with a plurality of screw fixed holes (452), link with interior hexagonal round head bolt (23) and runner (24) by screw fixed hole (452), the outer avris of last seal ring (45) and front shroud (34) fit tightly, and last seal ring (45) external diameter is processed into right-handed thread or left-handed thread.