CN204704528U - Crescent moon floor and Rib Reinforced Bifurcation Pipe - Google Patents

Abstract

The utility model relates to Hydraulic and Hydro-Power Engineering technical field, particularly relates to a kind of crescent moon floor and Rib Reinforced Bifurcation Pipe.Disclosed in the utility model, crescent moon floor comprises plate body, and described plate body comprises inner edge and outer rim, and described outer rim is ellipse arc, and described inner edge is ellipse arc.The crescent moon floor area of this structure is smaller, is more conducive to structure stress.Rib Reinforced Bifurcation Pipe disclosed in the utility model, comprises supervisor, the first arm and the second arm, is fixed with crescent moon floor as above at the seam place of company of described first arm and the second arm.The interference that the Rib Reinforced Bifurcation Pipe water flow inside of this structure is subject to is less, makes loss of head less.

Description

Crescent moon floor and Rib Reinforced Bifurcation Pipe

Technical field

The utility model relates to Hydraulic and Hydro-Power Engineering technical field, particularly relates to a kind of crescent moon floor and Rib Reinforced Bifurcation Pipe.

Background technique

Bifurcated pipe is the current distribution duct that the water power plant in Hydraulic and Hydro-Power Engineering field is often used, and is very important stressed member.Rib Reinforced Bifurcation Pipe is the novel bifurcated pipe of one grown up on the basis of three beam type bifurcated pipes, and it instead of heavy outer buttress brace with crescent shape interpolation floor, and the structure shape of bifurcated pipe and size are greatly improved.

Crescent moon floor is a kind of crescent shape board-like material being fixed on two pipes and connecting seam place, and its inner rim stretches into pipe interior, and outer rim then stays pipeline external.At present, the inner edge curve of crescent moon floor generally adopts parabolic equation to design, and the outer counter equation of crescent moon floor generally adopts elliptic curve equation to design, and this floor sectional area just causing two curves to be determined is bigger than normal, and stress is more concentrated.

Model utility content

Technical problem to be solved in the utility model is to provide a kind of stress distribution uniform crescent moon floor and the less Rib Reinforced Bifurcation Pipe of a kind of loss of head.

The utility model solves the crescent moon floor that its technical problem adopts, and comprises plate body, and described plate body comprises inner edge and outer rim, and described outer rim is ellipse arc, and described inner edge is ellipse arc.

Further, the ellipse arc of described inner edge meets equation

Further, the ellipse arc of described outer rim meets equation

The utility model solves the Rib Reinforced Bifurcation Pipe that its technical problem adopts, and comprises supervisor, the first arm and the second arm, is fixed with crescent moon floor as above at the seam place of company of described first arm and the second arm.

Further, one is respectively had in the both sides of described plate body for the convenient intersecting line docked with the first arm or the second arm.

Further, described intersecting line meets equation

The beneficial effects of the utility model are: this kind of Rib Reinforced plate structure more traditional Rib Reinforced plate structure cross-sectional area is smaller, and the cross section that elliptic curve equation is determined is more conducive to structure stress, and the problem that stress is concentrated improves; Employ in the Rib Reinforced Bifurcation Pipe of crescent moon floor of this structure, the area that crescent moon floor stretches into pipe interior reduces to some extent, it also reduces the interference to current in pipeline, reduces the loss of head.

Accompanying drawing explanation

Fig. 1 is crescent moon floor plan view;

Fig. 2 is Rib Reinforced Bifurcation Pipe structural representation;

Component, position and numbering in figure: plate body 1, inner edge 11, outer rim 12, intersecting line 13, supervisor's the 2, first arm 3, second arm 4.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.It should be noted that at this, the explanation for these mode of executions understands the utility model for helping, but does not form restriction of the present utility model.

As shown in Figure 1, the crescent moon floor involved by the utility model comprises plate body 1, and described plate body 1 comprises inner edge 11 and outer rim 12, and described outer rim 12 is ellipse arc, and described inner edge 11 is ellipse arc.Inner edge 11 is the curved surfaces stretching into pipe interior after the installation of crescent moon floor fixes, and outer rim 12 is the curved surfaces being exposed to pipeline external.The shape of the inner edge 11 of ellipse arc, compared with the inner edge of traditional parabolic arc, due to inner edge 11 and outer rim 12 form fit of ellipse arc of ellipse arc, can reduce the area of plate body 1, and can overcome the concentrated defect of stress; Secondly, because inner edge 11 is the parts stretching into bifurcated pipe pipe interior, it is excessive that the area of plate body 1 reduces also just to avoid the flow-passing surface that plate body 1 stretches in pipeline, and then reduce the loss of head.

Specifically, in order to optimize the stress distribution on crescent moon floor, the ellipse arc of described inner edge 11 meets equation $\frac{{(x-1627.2)}^2}{{10714.2}^2}+\frac{y^2}{{6407.5}^2}=1,$ The ellipse arc of described outer rim 12 meets equation $\frac{x^2}{1{8341.4}^2}+\frac{y^2}{{8907.5}^2}=1.$

As shown in Figure 2, the Rib Reinforced Bifurcation Pipe involved by the utility model, comprises supervisor 2, first arm 3 and the second arm 4, is fixed with crescent moon floor as above at the seam place of company of described first arm 3 and the second arm 4.The area that the crescent moon floor of this structure stretches into bifurcated pipe pipe interior part is less, and namely the flow-passing surface area of crescent moon floor is less, can reduce the interference to current, and then reduces loss of head; Crescent moon floor can adopt the mode of welding to be fixed between the first arm 3 and the second arm 4, and this means of fixation can avoid stress to concentrate preferably.

Specifically, being conveniently welded and fixed of crescent moon floor, respectively has one for the convenient intersecting line 13 docked with the first arm 3 or the second arm 4 in the both sides of described plate body 1.This intersecting line 13 is intersecting lines that crescent moon floor passes through mutually with the first arm 3 or the second arm 4, before welding the part that the first arm 3 and the second arm 4 weld with crescent moon floor is cut out the shape of intersecting line 13, when welding, utilize the intersecting line 13 on crescent moon floor just can be easier to crescent moon floor is docked with the first arm 3 and the second arm 4.

Specifically, described intersecting line 13 meets equation

Claims (6)

1. crescent moon floor, comprise plate body (1), described plate body (1) comprises inner edge (11) and outer rim (12), and described outer rim (12) is ellipse arc, it is characterized in that: described inner edge (11) are ellipse arc.

2. crescent moon floor according to claim 1, is characterized in that: the ellipse arc of described inner edge (11) meets equation $\frac{{(x-1627.2)}^2}{{10714.2}^2}+\frac{y^2}{6{407.5}^2}=1.$

3. crescent moon floor according to claim 2, is characterized in that: the ellipse arc of described outer rim (12) meets equation $\frac{x^2}{18341.4^2}+\frac{y^2}{{8907.5}^2}=1.$

4. Rib Reinforced Bifurcation Pipe, comprise supervisor (2), the first arm (3) and the second arm (4), it is characterized in that: be fixed with crescent moon floor as claimed any one in claims 1 to 3 described first arm (3) and the seam place of company of the second arm (4).

5. Rib Reinforced Bifurcation Pipe according to claim 4, is characterized in that: respectively have one in the both sides of described plate body (1) for the convenient intersecting line (13) docked with the first arm (3) or the second arm (4).

6. Rib Reinforced Bifurcation Pipe according to claim 5, is characterized in that: described intersecting line (13) meets equation $\frac{x^2}{{15841.4}^2}+\frac{y^2}{{6407.5}^2}=1.$