CN102109077A - Reducing bent pipe and pumping equipment with same - Google Patents
Reducing bent pipe and pumping equipment with same Download PDFInfo
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- CN102109077A CN102109077A CN2011100280973A CN201110028097A CN102109077A CN 102109077 A CN102109077 A CN 102109077A CN 2011100280973 A CN2011100280973 A CN 2011100280973A CN 201110028097 A CN201110028097 A CN 201110028097A CN 102109077 A CN102109077 A CN 102109077A
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- 238000005086 pumping Methods 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0091—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using a special shape of fluid pass, e.g. throttles, ducts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a reducing bent pipe and pumping equipment with the same, and integrally relates to the field of material conveying. The reducing bent pipe is used in a fluid transportation piping, comprises an input end and an output end, and is characterized in that the radius of curvature of the reducing bent pipe increases from the input end to the output end. As the bending and the reducing degree of the reducing bent pipe are optimally designed, impact of transported materials on the reducing bent pipe can be effectively reduced, and the service life of the reducing bent pipe can be prolonged.
Description
Technical field
The present invention relates to the mass transport field, be specifically related to a kind of pumping equipment that is used for the reducing bend pipe of conveying material and comprises this reducing bend pipe.
Background technique
Develop rapidly along with the concrete industry, especially the high grade high performance concrete promotes the use of on a large scale, this vulnerable components for concrete pumping equipment, key member are also had higher requirement, the transmission and concrete transmission reducing bend pipe that for example the present invention relates to.
For pump truck, drag pumping equipments such as pump, its delivery line mainly is made up of straight tube and bend pipe.Transporting elbow commonly used at present mostly is the reducing bend pipe, the corner resistance of reducing bend pipe is bigger, and its internal diameter from large to small, the crooked tube wall of reducing bend pipe is constantly pushed and washes away in the out-of-date meeting of concrete flow, thereby it is make that the working life of reducing bend pipe is not only much lower than straight tube, and also low more many than common non-reducing bend pipe.On the other hand, the situation of plugging generally also appears at the position of reducing bend pipe in the delivery line, and this often causes construction to interrupt, and the little construction speed that then delays booster greatly then occurs and causes security incident.Therefore, how effectively to reduce the internal drag of the reducing bend pipe of this type of key position, be a great problem that runs in the present industry working life that promotes the reducing bend pipe simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of reducing bend pipe of architecture advances and comprise the pumping equipment of this reducing bend pipe, the crooked reducing of reducing bend pipe has carried out optimal design, can reduce of the impact of transmission material effectively, is provided the working life of reducing bend pipe the reducing bend pipe.
At above-mentioned purpose, a kind of reducing bend pipe is provided according to a first aspect of the invention, be used for fluid delivery pipeline, the reducing bend pipe comprises input end and output terminal, it is characterized in that, the radius of curvature of reducing bend pipe is the trend of increase from input end to output terminal.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the internal diameter tapering of reducing bend pipe is the trend that reduces from input end to output terminal.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the radius of curvature of reducing bend pipe from input end to output terminal increases continuously.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the internal diameter tapering of reducing bend pipe from input end to output terminal reduces continuously.
Further, reducing bend pipe according to first aspect present invention, wherein, the reducing bend pipe comprises with respect to the radius of curvature of its flexural center: the outer tube wall of reducing bend pipe with respect to the radius of curvature of the nearside of the flexural center of reducing bend pipe, outer tube wall with respect to the inner tubal wall of the radius of curvature in the distally of flexural center, reducing bend pipe with respect to the radius of curvature of the nearside of flexural center, inner tubal wall radius of curvature with respect to the center line of the radius of curvature in the distally of flexural center and reducing bend pipe.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the thickness of the tube wall that the range curvature center of reducing bend pipe is far away is greater than the thickness of the near tube wall in range curvature center.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the thickness that range curvature center tube wall far away is located greater than the two ends of reducing bend pipe at the thickness of reducing bend pipe middle section.
Further, according to the reducing bend pipe of first aspect present invention, wherein, the cross section of reducing bend pipe is circular, oval, square or rectangle.
Further, reducing bend pipe according to first aspect present invention, wherein, the reducing bend pipe is made of the different curved section of a plurality of radius of curvature, and curved section is selected from one or more in the group that is made of circular arc section, elliptic arc section, hyperbolic sector, parabola section, involute section.
A kind of pumping equipment is provided according to a second aspect of the invention, has comprised reducing bend pipe in the fluid delivery pipeline of this pumping equipment according to first aspect present invention.
The present invention has following technique effect:
According to reducing bend pipe of the present invention, it has carried out optimal design according to concrete real fluid state to the curvature changing of the whole radius of turn of bend pipe itself, change variable curvature into by constant curvature, make the reducing bend pipe satisfy radius of curvature is increase from the input end to the output terminal trend generally, promptly, make that the radius of curvature of the position (being the bigger position of internal diameter) that flow velocity is little in the reducing bend pipe is also less, the radius of curvature of the position that flow velocity is big (being the less position of internal diameter) is also bigger.Thus, reducing bend pipe compared to existing technology, reducing bend pipe of the present invention make flow velocity faster the position turn more slow, thereby reduce the impact of fluid to tube wall, the wearing and tearing that make tube wall relatively all with, can be too unconcentrated, thus avoid the too fast phenomenon of concentrated wear; Reducing bend pipe of the present invention slows down by the degree of crook with the very fast position of former flow velocity simultaneously, thereby has reduced the pressure loss of fluid, avoids the buildup plugging.
Secondly, compare with the reducing bend pipe of comparing prior art, reducing bend pipe of the present invention has also carried out optimal design according to concrete real fluid state to the tapering variation pattern of bend pipe internal diameter, change taper mutation into by constant taper, make the reducing bend pipe satisfy the internal diameter tapering generally and from the input end to the output terminal, be the trend that reduces, promptly, make that the internal diameter tapering (reducing amplitude) of the position (being the less position of internal diameter) that flow velocity is big in the reducing bend pipe is less, the internal diameter tapering of the position that flow velocity is little (being the bigger position of internal diameter) is bigger, thereby reduce fluid pressure loss, alleviate the erosive wear of concrete, avoid the too fast or buildup plugging of concentrated wear the inner tube wall local location.
On the whole, reducing bend pipe of the present invention has been followed the design concept of whole equivalent life, make all abrading sections of bend pipe to keep identical substantially, guarantee that each section of bend pipe has the equal life-span, the often local worn out situation of scrapping of reducing bend pipe in the prior art can not occur.
Should be appreciated that above generality is described and the following detailed description is all enumerated and illustrative, purpose is for to the claimed further instruction that the invention provides.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the present invention.These accompanying drawings illustrate some embodiments of the present invention, and are used for illustrating principle of the present invention with specification.Identical in the accompanying drawings parts are represented with identical label.In the accompanying drawing:
Fig. 1 shows the structural representation of reducing bend pipe of the prior art;
Fig. 2 shows the structural representation according to the reducing bend pipe of one embodiment of the present invention;
Fig. 3 shows the design according to the center line of the reducing bend pipe of one embodiment of the present invention;
Fig. 4 (a) shows the schematic representation according to five sections of the reducing bend pipe of one embodiment of the present invention among Fig. 2 respectively to Fig. 4 (e), specifically comprises A-A sectional view, B-B sectional view, C-C sectional view, D-D sectional view and E-E sectional view.
Embodiment
To contrast reducing bend pipe of the prior art below, and come embodiments of the present invention are described with reference to accompanying drawing and in conjunction with instantiation simultaneously.
At first, the structure to a kind of reducing bend pipe of using in the prior art shown in Fig. 1 describes.
As shown in Figure 1, the structure of reducing bend pipe 1 of the prior art is as follows:
As shown in fig. 1, all be changeless among the above-mentioned radius of curvature R 1 of reducing bend pipe 1, R2, R3, R4, the R5.And thus, the tapering of the inside reducing of bend pipe 1 also is changeless.Particularly, here the internal diameter tapering of indication can calculate by this way, promptly intercept any a section in the bend pipe 1, regard it as imaginary round platform, deduct round platform end face radius with round platform bottom surface radius, and then sentence the height (with the arc length of the bend pipe center line in this section bend pipe as frustum cone height) of round platform, can calculate the internal diameter tapering thus.By top description as can be known, the internal diameter tapering of reducing bend pipe 1 of the prior art is constant.
Reducing bend pipe 1 among Fig. 1, because it all is changeless at whole turning structure (from input end 1a to output terminal 1b) mean curvature radius, therefore (for example at material, concrete) flows through in the process of bend pipe 1, material is different in the bigger position of internal diameter with the flow velocity of the less position of internal diameter, the flow velocity of the position material that internal diameter is less is very fast, will cause the wearing and tearing of internal diameter major part and internal diameter smaller portions inhomogeneous like this.Simultaneously, because the tapering of bend pipe 1 internal diameter also is changeless, similarly, the position (internal diameter larger part) that the wearing and tearing of the position (internal diameter smaller part) that material flow is bigger in the bend pipe 1 also can be more less than material flow is fast.This has just caused reducing bend pipe 1 overall wear of the prior art inhomogeneous, and the part withstands shocks excessively, has reduced the whole service life of bend pipe 1 thus.
At the problems referred to above, the present invention has carried out optimal design again to the reducing bend pipe, changed the design of the radius of reducing bend pipe, and then it is technical at this, more advantageously, changed the design of the internal diameter tapering of reducing bend pipe, with " bend pipe is increase tendency from big the end to the radius of curvature of small end ", " bend pipe is from the big trend that becomes to reduce to the internal diameter tapering of small end of holding " is design principle, design the reducing bend pipe of brand-new variable curvature taper mutation, to eliminate the problem of reducing bend pipe unbalance stress, reduce the pressure loss of material in the reducing bend pipe simultaneously.Come above-mentioned design is described below in conjunction with instantiation.
For the ease of understanding the present invention better, at first following technical term is described below.In this manual, " radius of curvature " of bend pipe is meant the radius of curvature of bend pipe integral body, promptly as the bending radius of a warp architecture spare, this radius of curvature generally can be represented with the radius of curvature of bend pipe center line, be the radius of its flexural center of bend pipe distance between center line, the radius R shown in Fig. 13 for example.Certainly in fact, if do further meticulous division, the radius of curvature of bend pipe can comprise the radius (as radius R in Fig. 11, R2) of bend pipe outer wall (comprising the outside and inboard) apart from its flexural center, and elbow internal wall (comprising the outside and inboard) is apart from the radius (as the radius R among Fig. 14, R5) of its flexural center.The centre of curvature of above-mentioned radius of curvature can be different, for example shown in Fig. 1 like that.The center line of bend pipe, outer wall and inwall have different centre of curvature respectively.Term herein " internal diameter tapering " is meant under the situation of the radius of curvature variation of bend pipe, the speed (being similar to the curvature of camber line) that radius of curvature changes, and its concrete calculation method will describe in detail in conjunction with instantiation hereinafter.Term in the specification " big end " is meant the end (as the 10a among Fig. 2) of the radius of curvature maximum of reducing bend pipe of the present invention, and " small end " is meant the end (as the 10b among Fig. 2) of the radius of curvature minimum of reducing bend pipe.
Fig. 2 shows the structural representation according to the reducing bend pipe 10 of a preferred embodiment of the invention.Fig. 3 shows the schematic representation of the center line of this reducing bend pipe 10.Fig. 4 shows the sectional drawing of five cutting planes of the reducing bend pipe 10 among Fig. 2.
Reducing bend pipe 10 shown in Fig. 2 can be used for the mass transport pipeline of pumping equipment, to carry for example concrete fluid.This reducing bend pipe 10 comprises input end 10a (having internal diameter Φ 1, for example 179mm) and output terminal 10b (having internal diameter Φ 2, for example 150mm), and wherein, the radius of curvature of reducing bend pipe 10 is the trend of increase to output terminal 10b from input end 10a.That is to say that the radius of curvature of reducing bend pipe 10 of the present invention is less in the bigger position of bend pipe internal diameter, and bigger in the less position of bend pipe internal diameter.By the fluid pressure distribution principle as can be known, the position flow velocity that internal diameter is bigger is slower, and the less position flow velocity of internal diameter is very fast, according to bend pipe equivalent life mentality of designing, strengthen the radius of curvature of reducing bend pipe 10 in the slow position of flow velocity, to improve flow velocity, the position fast at flow velocity reduces radius of curvature, impact reducing, thereby can guarantee that fluid flow velocity in whole reducing bend pipe is even, avoid inhomogeneous impact the tube wall local location.Particularly, above-mentioned radius of curvature can be one or more in the radius of curvature of listing below: the outer tube wall of reducing bend pipe 10 with respect to the radius of curvature in the distally (for example 10p shown in Fig. 2) of flexural center O, above-mentioned outer tube wall with respect to the inner tubal wall of the radius of curvature of the nearside of flexural center O, reducing bend pipe 10 with respect to the radius of curvature (for example 10n shown in Fig. 2) in the distally of flexural center O, above-mentioned inner tubal wall radius of curvature with respect to the center line 10i of the radius of curvature of the nearside of flexural center O and reducing bend pipe 10.In mode of execution preferably, above-mentioned radius of curvature is all designed according to mentioned above principle.Need to prove that the outer tube wall here is meant the tube wall that reducing bend pipe 10 contacts with external environment condition, inner tubal wall is meant the tube wall that contacts with fluid of reducing bend pipe 10 inside.
Further, according to reducing bend pipe 10 of the present invention, its internal diameter taper design becomes to be the trend that reduces to output terminal 10b from input end 10a.Here, the calculation method of internal diameter tapering as top at the calculation method of description of the Prior Art.For illustrative purposes, in Fig. 2, reducing bend pipe 10 five section 10c, 10d, 10e, 10f, 10g, 10h exemplarily have been divided into five cutting plane A-A, B-B, C-C, D-D, E-E, reducing bend pipe 10 from input end 10a to output terminal 10b the radius of curvature of these sections 10c, 10d, 10e, 10f, 10g, 10h increase successively, and the internal diameter tapering of these sections 10c, 10d, 10e, 10f, 10g, 10h reduces continuously.Need to prove, divide these five section 10c, 10d, 10e, 10f, 10g, 10h only are the variation tendencies for crooked reducing that reducing bend pipe 10 is described and internal diameter tapering, and are not that expression reducing bend pipe 10 of the present invention can only change in the mode shown in scheming.In fact, for the reducing bend pipe 10 shown in Fig. 2, can divide reducing bend pipe 10 with the unspecified angle interval, the section of dividing can be arbitrarily small, no matter be how little section, when calculating the internal diameter tapering by the way, all will satisfy input end 10a from reducing bend pipe 10 to output terminal 10b, the radius of curvature of bend pipe 10 is increase tendency, the internal diameter tapering all is and reduces trend, that is, the elbow radius of reducing bend pipe 10 of the present invention is more little the closer to the position of input end 10a, and is big more in the position the closer to output terminal 10b; Simultaneously, the internal diameter tapering of reducing bend pipe 10 is the position reducing degree the closer to input end 10a fast more (being that the internal diameter tapering is bigger), and the position reducing degree the closer to output terminal 10b slow more (being that the internal diameter tapering is less).By this variable curvature radius and in conjunction with the design that becomes the internal diameter tapering, can guarantee further that reducing bend pipe 10 of the present invention all has uniform fluid impact power on whole warp architecture, and further reduce the pressure loss that fluid brings owing to excess impact in reducing bend pipe 10 inside.
Further, as shown in Figure 3, the curvature of the curved district radius of the center line 10i of this reducing bend pipe 10 also is gradual change, and its center line 10i is not common circular arc, but radius of curvature is increase tendency from input end 10a to output terminal 10b.This radius of curvature variation tendency with reducing bend pipe 10 is corresponding.
Particularly, be that unit is divided into a plurality of sections successively with reducing bend pipe 10 with 15 °, 30 °, 45 °, 60 °, 75 °, 90 ° among Fig. 3, horizontal equivalent L1, L2 that these sections occupy, L3, L4, L5, L6 and vertical distance H 1, H2, H3, H4, H5, H6 have been marked simultaneously successively, concrete dimension reference following table.
| L1＝360mm | H1＝338mm |
| L2＝346.18mm | H2＝327.79mm |
| L3＝306.66mm | H3＝297.15mm |
| L4＝246.41mm | H4＝246.41mm |
| L5＝171.56mm | H5＝177.05mm |
| L6＝87.83mm | H6＝92.76mm |
Can see by the data in the last table, from the input end 10a of reducing bend pipe 10 to output terminal 10b, center line 10i distance in the horizontal direction shortens very fast, the distance of in the vertical direction shortens slower, just, center line 10i is approximated to the shape of an elliptic arc, and the horizontal axis of this elliptic arc is a major axis, and vertical axis is a minor axis.This shows that the radius of curvature of center line 10i increases from input end 10a to output terminal 10b.
And, in preferred implementation of the present invention, reducing bend pipe 10 being configured to, the radius of curvature from input end 10a to output terminal 10b increases continuously; Internal diameter tapering from input end 10a to output terminal 10b reduces continuously.Correspondingly, the radius of curvature of center line 10i also increases continuously from the input end 10a of reducing bend pipe 10 to output terminal 10b.This mode helps constructing inner pipe wall Paint Gloss, thereby further reduces fluid impact, avoids fluid pressure loss.
Further, because in actual the use, reducing bend pipe 10 all is that the outer wall away from the flexural center is subjected to bigger fluid impact.Therefore, reducing bend pipe 10 according to the present invention carries out following design: make the thickness of the thickness of the range curvature center O (as shown in Figure 2) of reducing bend pipe 10 outside tube wall 10j far away greater than the nearer inboard tube wall 10k of range curvature center O.This design can make reducing bend pipe 10 wear and tear in uniform more mode, improves whole working life.For example, it is thick the outside tube wall 10j away from flexural center O can be designed to 15～18mm, and it is thick to be designed to 10mm near the inboard tube wall 10k of flexural center O.This design can be provided with prejudicially with respect to outer tube wall 10p by the inner tubal wall 10n with reducing bend pipe 10 and realize.Fig. 4 (a) clearly show that this eccentric the setting to Fig. 4 (e).Fig. 4 (a) represents that with Ca, Cb, Cc, Cd, Ce cutting plane A-A, B-B, C-C, D-D, the inner tubal wall 10n of E-E place are with respect to outer tube wall 10p throw of eccentric to Fig. 4 (e).
Further, also find in actual applications, the wearing and tearing of reducing bend pipe 10 at the position, stage casing are greater than the wearing and tearing at place, two ends, therefore, reducing bend pipe of the present invention has further carried out following optimal design: with outside tube wall 10j at the thickness of reducing bend pipe 10 middle sections thickness greater than the place, two ends of reducing bend pipe 10.Fig. 4 (a) clearly show that this variation to Fig. 4 (e).In conjunction with Fig. 2 as can be seen, cutting plane A-A is substantially at the middle part of reducing bend pipe 10, cutting plane B-B, C-C and D-D, E-E is distributed in cutting plane A-A both sides respectively, wherein, cutting plane A-A, B-B, D-D is in the stage casing of reducing bend pipe 10, comparatively speaking, cutting plane C-C and E-E are respectively near two ends, at Fig. 4 (a) to the example shown in Fig. 4 (e), 10 5 cutting plane A-A of reducing bend pipe, B-B, C-C, D-D, the inboard tube wall Da1 at E-E place, Db1, Dc1, Dd1, it is thick that De1 is designed to 10mm, three cutting plane A-A with the stage casing, B-B, the outside tube wall Da2 at D-D place, Db2, it is thick (accordingly that Dd2 is designed to 18mm, throw of eccentric Ca, Cb, Cd is 4mm), will be near two cutting plane C-C at two ends, the outside tube wall Dc2 at E-E place, De2 is designed to thick (the throw of eccentric Cc accordingly, of 15mm, Ce is 2.5mm).According to above-mentioned size, reducing bend pipe 10 of the present invention can be designed to have the size in the following table, wherein, Φ a1, Φ a2 represent the internal diameter and the external diameter of A-A section place bend pipe 10 respectively, similarly, Φ b1, Φ b2 represent the internal diameter and the external diameter of B-B section place bend pipe 10 respectively, Φ c1, Φ c2 represent the internal diameter and the external diameter of C-C section place bend pipe 10 respectively, Φ d1, Φ d2 represent the internal diameter and the external diameter of D-D section place bend pipe 10 respectively, Φ e1, Φ e2 represent the internal diameter and the external diameter of E-E section place bend pipe 10 respectively, and unit is mm in the table.
| ?Φa1＝158 | ?Φa2＝186 | ?Da1＝10 | ?Da2＝18 | Ca＝4 |
| ?Φb1＝155 | ?Φb2＝183 | ?Db1＝10 | ?Db2＝18 | Cb＝4 |
| ?Φc1＝152 | ?Φc2＝177 | ?Dc1＝10 | ?Dc2＝15 | Cc＝2.5 |
| ?Φd1＝162.5 | ?Φd2＝190.5 | ?Dd1＝10 | ?Dd2＝18 | Cd＝4 |
| ?Φe1＝168 | ?Φe2＝193 | ?De1＝10 | ?De2＝15 | Ce＝2.5 |
Certainly, reducing bend pipe 10 of the present invention is not limited to the size in the foregoing description, can according to concrete application need, carry out any suitably change to above-mentioned size according to principle of the present invention.
Further, although among the embodiment shown in the figure, reducing bend pipe 10 has circular cross section,, be appreciated that in other mode of execution the cross section of reducing bend pipe 10 also can be oval, square or rectangle etc.
And, when design reducing bend pipe 10 of the present invention, reducing bend pipe 10 can constitute with the crooked segmental arc of any appropriate, for example, reducing bend pipe 10 in illustrated embodiment constitutes (in fact, these circular arc sections can be infinitely small) by the different circular arc section of a plurality of radius of curvature.In other embodiments, reducing bend pipe of the present invention can be made of any suitable curved section, for example, curved section can be to be selected from the group that is made of circular arc section, elliptic arc section, hyperbolic sector, parabola section, involute section one or more.By digital modeling, can accurately design the reducing bend pipe of multiple structural form, and can guarantee accurate design size.
In addition, also provide a kind of pumping equipment, comprised above-mentioned in its delivery line according to reducing bend pipe of the present invention according to principle of the present invention.This pumping equipment can be a concrete pumping equipment.Certainly, as required, reducing bend pipe of the present invention also can be applied to be used to carry the pumping equipment of other types fluid.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a reducing bend pipe is used for fluid delivery pipeline, and described reducing bend pipe (10) comprises input end (10a) and output terminal (10b), it is characterized in that,
The radius of curvature of described reducing bend pipe (10) is the trend of increase from described input end (10a) to described output terminal (10b).
2. reducing bend pipe according to claim 1 is characterized in that,
The internal diameter tapering of described reducing bend pipe (10) is the trend that reduces from described input end (10a) to described output terminal (10b).
3. reducing bend pipe according to claim 1 and 2 is characterized in that,
The radius of curvature of described reducing bend pipe (10) from described input end (10a) to described output terminal (10b) increases continuously.
4. reducing bend pipe according to claim 1 and 2 is characterized in that,
The internal diameter tapering of described reducing bend pipe (10) from described input end (10a) to described output terminal (10b) reduces continuously.
5. reducing bend pipe according to claim 1 and 2, it is characterized in that described reducing bend pipe (10) comprising with respect to the described radius of curvature of its flexural center (O): the outer tube wall of described reducing bend pipe (10) is with respect to the radius of curvature of the nearside of the flexural center (O) of described reducing bend pipe (10), described outer tube wall is with respect to the radius of curvature in the distally of described flexural center (O), the inner tubal wall of described reducing bend pipe (10) is with respect to the radius of curvature of the nearside of described flexural center (O), described inner tubal wall is with respect to the radius of curvature of the center line (10i) of the radius of curvature in the distally of described flexural center (O) and described reducing bend pipe (10).
6. reducing bend pipe according to claim 1 and 2 is characterized in that, the thickness of the tube wall (10j) that the described flexural center of distance (O) of described reducing bend pipe (10) is far away is greater than the thickness of the near tube wall (10k) in the described flexural center of distance (O).
7. reducing bend pipe according to claim 6 is characterized in that, the thickness that the described flexural center of distance (O) tube wall (10j) far away is located greater than the two ends of described reducing bend pipe (10) at the thickness of described reducing bend pipe (10) middle section.
8. reducing bend pipe according to claim 1 is characterized in that, the cross section of described reducing bend pipe (10) is circular, oval, square or rectangle.
9. reducing bend pipe according to claim 1, it is characterized in that, described reducing bend pipe (10) is made of the different curved section of a plurality of radius of curvature, and described curved section is selected from one or more in the group that is made of circular arc section, elliptic arc section, hyperbolic sector, parabola section, involute section.
10. a pumping equipment is characterized in that, comprises in the fluid delivery pipeline of described pumping equipment according to each described reducing bend pipe (10) in the claim 1 to 9.
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|---|---|---|---|
| CN 201110028097 CN102109077B (en) | 2011-01-25 | 2011-01-25 | Reducing bent pipe and pumping equipment with same |
| PCT/CN2011/078648 WO2012100525A1 (en) | 2011-01-25 | 2011-08-19 | Reducing elbow and pumping device comprising reducing elbow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028097 CN102109077B (en) | 2011-01-25 | 2011-01-25 | Reducing bent pipe and pumping equipment with same |
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| CN102109077A true CN102109077A (en) | 2011-06-29 |
| CN102109077B CN102109077B (en) | 2013-04-03 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410421A (en) * | 2011-09-23 | 2012-04-11 | 扬州大学 | Novel 90-degree variable-curvature bent pipe |
| WO2012100525A1 (en) * | 2011-01-25 | 2012-08-02 | 长沙中联重工科技发展股份有限公司 | Reducing elbow and pumping device comprising reducing elbow |
| CN103375435A (en) * | 2012-04-12 | 2013-10-30 | 株式会社日立工业设备技术 | Pump suction pipe |
| CN106513582A (en) * | 2016-12-31 | 2017-03-22 | 马鞍山市海天重工科技发展有限公司 | Gating system for semi-curved pipe |
| CN108458194A (en) * | 2018-05-11 | 2018-08-28 | 江苏太平橡胶股份有限公司 | Reducing curved rubber hose |
| CN108644514A (en) * | 2018-06-28 | 2018-10-12 | 三汽车制造有限公司 | A kind of concrete conveying elbow pipe and its manufacturing method |
| CN109248997A (en) * | 2018-11-23 | 2019-01-22 | 芜湖新兴铸管有限责任公司 | Involute elbow chute |
| CN109477328A (en) * | 2016-07-07 | 2019-03-15 | 尼尔森灌溉公司 | The centrally-pivoted axle of modified cross-sectional diameter irrigates gooseneck |
| CN110259656A (en) * | 2019-06-17 | 2019-09-20 | 重庆大学 | Pump concrete nonstationary flow pumping pressure dynamic analysing method |
| CN111043432A (en) * | 2019-12-31 | 2020-04-21 | 马鞍山市海天重工科技发展有限公司 | Enhancement type integrated wear-resistant elbow, conveying pipeline and concrete pump truck |
| CN114738224A (en) * | 2022-03-29 | 2022-07-12 | 中联重科股份有限公司 | S pipe distribution valve and concrete pumping device |
| CN115163954A (en) * | 2022-05-26 | 2022-10-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Low-resistance aviation pipeline distributor |
| CN115163957A (en) * | 2022-05-26 | 2022-10-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Low-resistance aviation pipeline steering gear |
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| WO2012100525A1 (en) * | 2011-01-25 | 2012-08-02 | 长沙中联重工科技发展股份有限公司 | Reducing elbow and pumping device comprising reducing elbow |
| CN102410421A (en) * | 2011-09-23 | 2012-04-11 | 扬州大学 | Novel 90-degree variable-curvature bent pipe |
| CN103375435A (en) * | 2012-04-12 | 2013-10-30 | 株式会社日立工业设备技术 | Pump suction pipe |
| CN103375435B (en) * | 2012-04-12 | 2016-12-28 | 株式会社日立制作所 | Pump suction pipe |
| CN109477328A (en) * | 2016-07-07 | 2019-03-15 | 尼尔森灌溉公司 | The centrally-pivoted axle of modified cross-sectional diameter irrigates gooseneck |
| CN106513582B (en) * | 2016-12-31 | 2018-01-12 | 马鞍山市海天重工科技发展有限公司 | A kind of running gate system of half bend pipe |
| CN106513582A (en) * | 2016-12-31 | 2017-03-22 | 马鞍山市海天重工科技发展有限公司 | Gating system for semi-curved pipe |
| CN108458194A (en) * | 2018-05-11 | 2018-08-28 | 江苏太平橡胶股份有限公司 | Reducing curved rubber hose |
| CN108644514A (en) * | 2018-06-28 | 2018-10-12 | 三汽车制造有限公司 | A kind of concrete conveying elbow pipe and its manufacturing method |
| CN109248997A (en) * | 2018-11-23 | 2019-01-22 | 芜湖新兴铸管有限责任公司 | Involute elbow chute |
| CN110259656A (en) * | 2019-06-17 | 2019-09-20 | 重庆大学 | Pump concrete nonstationary flow pumping pressure dynamic analysing method |
| CN111043432A (en) * | 2019-12-31 | 2020-04-21 | 马鞍山市海天重工科技发展有限公司 | Enhancement type integrated wear-resistant elbow, conveying pipeline and concrete pump truck |
| CN114738224A (en) * | 2022-03-29 | 2022-07-12 | 中联重科股份有限公司 | S pipe distribution valve and concrete pumping device |
| CN115163954A (en) * | 2022-05-26 | 2022-10-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Low-resistance aviation pipeline distributor |
| CN115163957A (en) * | 2022-05-26 | 2022-10-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Low-resistance aviation pipeline steering gear |
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| CN102109077B (en) | 2013-04-03 |
| WO2012100525A1 (en) | 2012-08-02 |
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