CN86105653A

CN86105653A - Adjustable pipe bend

Info

Publication number: CN86105653A
Application number: CN 86105653
Authority: CN
Inventors: 布赖恩·约翰·特雷夫格撒·马赛厄斯
Original assignee: Warman International Ltd
Current assignee: Warman International Ltd
Priority date: 1985-07-12
Filing date: 1986-07-12
Publication date: 1987-04-22

Abstract

Adjustable pipe bend can be regulated in the angular range of a broad and change direction.This elbow is to be made of two two-part that intersect in one plane, this plane and supposition pipeline be determine flow direction under the extension situation point-blank imaginary line at an angle.Above-mentioned two-part can rotate with respect to this plane, thereby form desired elbow.By just reaching the change of flow direction on the imaginary circle ball portion that a general truncated cone intake section is set an amplification,, flow of fluid pulls disturbance and only being subjected to minimum.

Description

Adjustable pipe bend

The present invention is an adjustable pipe bend, and this channel bend can be regulated in the angular range of a broad and change direction.

Known adjustable pipe bend generally all is big assembly parts, and the circulation of their convection cells can produce sizable resistance, and they have the center cross-sectional bigger than pipe diameter again, and this can cause many difficulties when pipeline condition is restricted.

More typical this elbow is to authorize put down in writing in No. 1,361,662, the B. P. of Yamamoto Sangyo K.K the sort of.The twin head that obtains this part patent needs a head bigger than caliber.In addition, the turbulent flow always of the flow performance in this elbow under any suitable flow velocity.Concerning some was used, turbulent flow was bad, and for example in thin pulp was carried, turbulent increase can be quickened the wearing and tearing on the channel bend greatly.

With similarly above-mentioned, U. S. Patent 2,489,100; 1,301,453 and 1,123, No. 839 is at adjustable pipe joint and the method that their relative part is tightened together.The flow passage problem is not considered in these inventions.The inventor's earlier application also is this situation as what propose in No. 2,325,757, the Deutsches Reichs-Patent prospectus.

Purpose of the present invention will overcome or improve above-mentioned shortcoming substantially.

Adjustable pipe bend disclosed herein has an input part and an output, these two-part are the face seal ground connections that are sealed and matched by ring, and to have a part in above-mentioned two-part at least be with one above-mentioned neck to be constituted with the curved portions that above-mentioned surface links to each other from above-mentioned matching surface first neck far away by one, and above-mentioned curved portions is in the segment part of a ball of side formation, and the first above-mentioned neck is to cut with above-mentioned ball phase shortage partly at least.

By embodiment, optimised form of the present invention is described now with reference to accompanying drawing, wherein:

Fig. 1 is the sectional side view of an adjustable pipe bend;

Fig. 2 is the sectional side view of half adjustable homogeneous tube road elbow shown in Figure 1;

Fig. 3 is the end elevation of channel bend flange part shown in Figure 2, and

Fig. 4 is the follow-on sectional side view of elbow shown in Figure 1.

Fig. 5 is another follow-on sectional side view of elbow shown in Figure 1.

In the accompanying drawing, Fig. 1 depicts a channel bend 10 briefly to Fig. 3.This channel bend 10 is made of two

halves

11 and 12, and this two halves is the same in this example.Yet should understand that the visual direction of half part 12 double part direction 11 has mutually been rotated 90 °, each

half part

11 and 12 is all joined note an annular flange 13, forms the ring fitting surface of center on diaxon 14 and 15 intersection points by this flange 13.Flange 13 is equipped with some slotted eyes, and (as seen from Figure 3) bolt or threaded fastening piece (not expression among the figure) can be fixed tightly in two

halves

11 and 12 together by these slotted eyes.Though half shown part 12 is identical with 11, in fact also can be different.

Half part 1 comprises the neck 16 of one first truncated cone, and it has determined a passage that increases gradually to connecting flange 13 cross sections from pipeline connecting end head flange 22.This neck 16 is by curved portions 17 terminations, and imaginary ball 18(of this curved portions formation sees Fig. 1).In addition, neck 16 is connected on the flange 13 by an arched part 19.This arched part 19 also is to extend with the form that is tangential to above-mentioned imaginary ball 18.Neck 16 has the axis 22 as its longitudinal axis.

The neck 16 of half part 12 generally also is to make truncated cone and extend with the form that is tangential to above-mentioned imaginary circle 18.

As seen from Figure 3, flange 13 is equipped with the slotted eye 20 of some angled extensions, and it can tighten together two

halves

11 and 12 by threaded fastening piece.Slotted eye 20 is isolated and the enough two halves 11 of length and 12 relatively rotate around axle 15, thereby for two

halves

11 and 12 provide angular adjustment, forms the elbow of 180 degree cornerites of one 90 degree.

This point is paid special attention to, and promptly half part 1 has been determined a passage 21 that extends along central axis 22.Axis 22 is not radially to extend from the center of above-mentioned ball 18, and this just can make the diameter of imaginary ball 18 just level off to the pipe diameter that is set more nearby.

If a channel bend constitutes with half part, 11 identical halves branches by two, then relatively rotate the angular adjustment that just can carry out 16 of two necks between two halves, so the cornerite that this channel bend just can be adjusted between two and half parts is to spend to the different amount of 180 degree from 90.This angular adjustment is regulated by flange 13, and this flange is equipped with the fitting surface of the ring that extends with 14 one-tenth miter angles of axis.Axis 14 is lines that the center of neck input end is linked to each other with the planar central that connects two elbow parts, and it also is the elongation line of flow of fluid axis in the connecting tube.Fig. 4 represents a channel bend that has improved, wherein first portion 11 is identical with second portion 12, but axle 14 becomes with the Plane intersects of adpting flange 13 through the much smaller angle of 45 degree, and this is to require elbow consideration that flow path produces minimum interference for the sort of.In addition, it can be used for connecting streamlined flow and also between flange end 22 two minimum pipelines of cross-section variation.

Channel bend shown in Figure 4 has also set a lining 23, and this is applicable to the pipeline of carrying corrosivity or corrosive substance.

Elbow shown in Figure 5 has been described another embodiment, and wherein the diameter of ball 18 has reduced the ratio of the diameter of neck 16, still keeps simultaneously neck axis 22 and the center that is connected imaginary ball 18 and neck 16 departing from than the axis 14 of distal center.16(is shown in Figure 5 for this neck) have a cylindrical shape.

Therefore, make the ball diameter have greater flexibility and ball has been reduced widely to the ratio of recess diameter to the ratio of recess diameter.

Profile among Fig. 5 has shown parallel (cylindrical) part neck 16, and it is between the transition zone and termination flange that is formed by the curved portions 17 and 19 near imaginary ball 18.At the neck face at termination flange place axis 14 perpendicular to the ball center.Neck axis 22 off-axis 14.

This makes recess diameter reach to 1=1 the ratio of ball diameter, and as needs, the length of neck 11 can shorten bottom line.

Therefore, this elbow can be used for all angles, avoids each angle is all laid in large quantities of elbows, has in the equipment of complex pipeline at some, and this obviously provides great mobility and Economy.

Most preferred embodiment of the present invention discussed above has advantage to the elbow of pipeline of flow of fluid generation minimum drag of formation, and this makes the wearing and tearing of channel bend reduce, and especially is loaded with under the situation of abrasives at liquid.Thereby can keep laminar condition in many cases, avoided in those devices of prior art, in flowing, introducing the wearing and tearing that disturbance causes.

In addition, most preferred embodiment discussed above has the advantage that reduces the channel bend size and reduce manufacture cost.

Claims

1, a kind of adjustable pipe bend, it has an input part and an output, these two-part are the face seal ground connections that are sealed and matched by ring, and to have a part in above-mentioned two-part at least be with one above-mentioned neck to be constituted with the curved portions that above-mentioned surface links to each other from above-mentioned fitting surface first neck far away by one, and above-mentioned curved portions is at the segment of a ball of side formation, and the first above-mentioned neck is to cut with above-mentioned ball phase shortage partly at least.

2, the channel bend of putting down in writing according to claim 1 is characterized in that above-mentioned second portion and first portion are same.

3, the channel bend of putting down in writing as claim 1 is characterized in that neck is a truncated cone.

4, the channel bend of putting down in writing as claim 1, it is characterized in that center from the inlet opening is to neck, an imaginary line to the planar central that connects input part and output is to become miter angle through a part with the plane of second portion with karate approx, and upward the axis of neck only all departs from above-mentioned imaginary line up to the planar central that connects input part and output from the inlet opening center.

5, the channel bend contained as claim 1, the neck that it is characterized in that it is a cylindrical member.

6, the channel bend of putting down in writing as claim 5, it is characterized in that it be fit to then be connected from this imagination ball neck termination far away with one, this termination termination is perpendicular to the fitting surface of an imaginary line that connects cylindrical end center and fitting surface center, this fitting surface connects first and second parts, and the center line of first portion departs from from the import center to the center that connects the first and second part fitting surfaces.