Fluid pipeline
阅读说明:本技术 流体管道 (Fluid pipeline ) 是由 B.M.莫里斯 A.金 M.C.莱诺德 于 2018-06-18 设计创作,主要内容包括:本文提供了一种流体管道(8),其包括用于经由密封环(6)联接到部件连接端部分(4)的流体管道连接端部分(12),所述流体管道连接端部分包括夹紧环座(14),所述夹紧环座被配置成接纳围绕其的可调整夹紧环,所述夹紧环座(14)在进入凸缘(16)与管接合部段(18)之间轴向地(A)延伸,所述管接合部段(18)10延伸到流体管道管部分(10)中。所述夹紧环座(14)包括延伸褶皱(20),所述延伸褶皱被配置成允许所述夹紧环座(14)因所述膨胀褶皱(20)的扩宽而径向地膨胀。(A fluid conduit (8) is provided herein comprising a fluid conduit connection end portion (12) for coupling to a component connection end portion (4) via a sealing ring (6), the fluid conduit connection end portion comprising a clamping ring seat (14) configured to receive an adjustable clamping ring therearound, the clamping ring seat (14) extending axially (a) between an access flange (16) and a tube engagement section (18), the tube engagement section (18) 10 extending into the fluid conduit tube portion (10). The clamping ring seat (14) comprises an extended pleat (20) configured to allow the clamping ring seat (14) to expand radially due to the widening of the expansion pleat (20).)
1. A fluid conduit (8) comprising a fluid conduit connection end portion (12) for coupling to a component connection end portion (4), the fluid conduit connection end portion (12) comprising a clamping ring seat (14) configured to receive an adjustable clamping ring therearound, the clamping ring seat (14) axially (14) between an entry section (16) and a tube engagement section (18)A) Extending the tube engaging section (18) into a fluid conduit tube portion (10), the fluidThe pipe is characterized in that the clamping ring seat (14) comprises expansion pleats (20) configured to allow at least a portion of the clamping ring seat (14) to expand radially due to the widening of the expansion pleats (20).
2. A fluid conduit according to claim 1, wherein the expansion fold comprises at least one beveled section (20 a) extending at least partially in a circumferential direction and at least partially in a radial direction with respect to the clamping ring seat.
3. A fluid conduit according to claim 2, wherein the expansion fold comprises a plurality of sloped segments.
4. A fluid conduit according to claim 3, wherein the beveled segments comprise at least one pair of beveled segments that converge toward an apex.
5. A fluid conduit according to any preceding claim, wherein the expansion corrugations form a continuous path circumscribing the clamping ring seat.
6. A fluid conduit according to any preceding claim, wherein the expansion fold comprises a wave shaped section comprising a pair of sloped sections.
7. A fluid conduit according to claim 6, wherein the wave shaped section extends over a circumferential angle of 10 ° to 170 °, preferably 10 ° to 60 °, with respect to the circumference of the clamping ring seat.
8. A fluid conduit according to any preceding claim, wherein the expansion pleats comprise an axis (about the fluid conduit connection end portion: (b:)A) A pair of uniformly arranged wave-shaped sections.
9. A fluid conduit according to any preceding claim, wherein the expanding pleats comprise sloped sections extending substantially from a first edge of the clamp ring seat to an opposite second edge of the clamp ring seat, the first and second edges being at opposite axial ends of the clamp ring seat.
10. A fluid conduit according to any preceding claim, wherein the tube engagement section comprises a tapered radially outer section (25) extending from the gripping ring seat and a tapered radially inner section (24) extending to the fluid conduit tube portion (10), the inner surface (22) of the tube engagement section receiving a compression sealing protrusion (32) of the sealing ring (6) thereagainst.
11. A fluid conduit according to any preceding claim, wherein the fluid conduit connection end portion is comprised of a blow-molded polymer.
12. A fluid conduit according to any preceding claim, wherein the expansion corrugations are in the form of inwardly concave grooves projecting radially inwardly.
13. A fluid conduit according to any preceding claim, wherein the expansion corrugations have a width in the range of 0.25 to 3 times a wall thickness of the clamping ring seat, preferably 0.5 to 2 times the wall thickness of the clamping ring seat.
14. A fluid conduit according to any preceding claim, wherein the expansion corrugations comprise radially inwardly projecting grooves having a radial depth in the range of 0.25 to 2 times the thickness of the wall of the clamping ring seat.
15. A fluid conduit according to any preceding claim, further comprising a sealing ring (6), wherein the fluid conduit connection end portion is coupled to the component connection end portion via the sealing ring, the sealing ring being configured to extend along an inner surface of the fluid conduit connection end portion from the entry section to the tube engagement section.
16. A fluid conduit according to the preceding claim, wherein the sealing ring comprises: an entry flange (26) configured to bear against the entry flange of the fluid conduit; an intermediate section (28) extending along an inner surface of the clamping ring seat; and an end section (30) including a compression sealing projection (32) extending radially outward to compress against the inner surface of the pipe engaging section.
17. A fluid conduit according to the preceding claim, wherein the end section of the sealing ring comprises at least one flexible sealing lip (34) in addition to the compression sealing protrusion.
Technical Field
The present invention relates to a fluid conduit, in particular a connection end portion of a fluid conduit. The fluid conduit may be used for transporting air, gas or liquid, in particular in automotive applications, for example in the gas flow system of a vehicle engine.
Background
In automotive applications, an airflow system directs airflow from an inlet to various engine components that require air for cooling, for combustion, or for ventilating the passenger compartment. Fluid flow systems having tubular conduits connected to components requiring air for cooling, for combustion, or for other purposes may also be present in non-automotive applications. Many fluid flow conduits are comprised of blow molded polymeric materials. The tubular fluid conduit needs to be connected to an engine component and typically has a connection end portion that is inserted over a connection end portion of the engine component (e.g., an inlet of a turbocharger). Typically, the clamp ring is positioned around the connection end portion of the fluid conduit and tightened to ensure that the fluid conduit is securely fastened to the component. A seal composed of an elastomeric polymer or rubber material is typically positioned between the fluid conduit and the component to hermetically seal the fluid conduit and the component. Other configurations include welding on injection molded coupling systems or crimping on metal systems.
In automotive engines, the environmental conditions are harsh and the components are subject to large temperature variations and mechanical vibrations. Mechanical and thermal stresses imposed on the connecting portions of the fluid conduits may cause cracking or cause the connection to loosen and subsequently break. A tight fit between the fluid conduit connection, the seal and the component connection is desirable for good sealing and reliability of the connection. However, the tight fit results in high insertion forces during assembly of the connection parts. This in turn leads to higher manufacturing costs but also increases the risk of incorrect connections during assembly, for example in which the seal is unevenly deformed or incorrectly positioned. Thus, high insertion forces can result in poor sealing and the connection is prone to disconnection or rupture.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide a fluid conduit having a connection end portion that is easy to assemble to complementary components but ensures a reliable connection, in particular a connection end portion that reduces the risk of breakage or disconnection and is well sealed.
It would be advantageous to provide a fluid conduit that is economical to manufacture.
It would be advantageous to provide a fluid conduit having a connection end portion that is easy to assemble while being strong and durable.
One or more of the objects of the invention have been achieved by providing a fluid conduit according to claim 1.
A fluid conduit is disclosed herein that includes a fluid conduit connection end portion for coupling to a component connection end portion, the fluid conduit coupling end portion including a clamp ring seat configured to receive an adjustable clamp ring thereabout. The gripping ring seat extends axially (a) between the entry section and a pipe engagement section extending into the fluid conduit pipe portion. The clamp ring seat includes an expansion pleat configured to allow at least a portion of the clamp ring seat to radially expand due to a widening of the expansion pleat.
In an embodiment, the fluid conduit connection end portion is coupled to the component connection end portion via a sealing ring extending along an inner surface of the fluid conduit connection end portion from the entry section to the tube engagement section.
In an embodiment, the seal ring comprises: an access flange configured to bear against the access flange of the fluid conduit; an intermediate section extending along an inner surface of the clamping ring seat; and an end section including a compression sealing projection extending radially outward to compress against an inner surface of the pipe engaging section.
In an advantageous embodiment, the end section of the sealing ring comprises at least one flexible sealing lip in addition to the pressing sealing projection.
In an embodiment, the expansion pleat comprises at least one beveled section extending at least partially in the circumferential direction and at least partially in the radial direction past the clamping ring seat.
In an advantageous embodiment, the expansion fold comprises a plurality of inclined sections.
In an advantageous embodiment, the inclined sections comprise at least one pair of inclined sections converging towards an apex.
In an advantageous embodiment, the expansion corrugations form a continuous path circumscribing the clamping ring seat.
In an advantageous embodiment, the expansion fold comprises a wave shaped section comprising a pair of inclined sections.
In an advantageous embodiment, the wave-shaped segments extend over a circumferential angle of 10 ° to 60 °, preferably 10 ° to 45 °, based on the circumference of the clamping ring.
In an embodiment, the expansion pleats comprise at least one pair of wave shaped sections arranged evenly around the axis (a) of the fluid conduit connection end portion.
In an advantageous embodiment, the expansion pleat comprises an inclined section extending substantially from a first edge of the clamping ring seat to an opposite second edge of the clamping ring seat, the first edge and the second edge being at opposite axial ends of the clamping ring seat.
In an advantageous embodiment, the pipe engaging section comprises a tapered radially outer section extending from the clamping ring seat and a tapered radially inner section extending to the fluid conduit pipe portion, the inner surface of the pipe engaging section receiving the compression sealing protrusion of the sealing ring thereagainst.
In an advantageous embodiment, the fluid conduit connection end portion is composed of a blow molded polymer.
In an advantageous embodiment, the expansion folds are in the form of inwardly concave grooves projecting radially inwards.
In an advantageous embodiment, the expansion folds have a width in the range of 0.25 to 3 times the wall thickness of the clamping ring seat, preferably 0.5 to 2 times the wall thickness of the clamping ring seat.
In an advantageous embodiment, the expansion folds comprise radially inwardly projecting grooves, wherein the radial depth of the grooves is in the range of 0.25 to 2 times the thickness of the wall of the clamping ring seat.
The advantages and features of novelty characterizing the present invention are pointed out with particularity in the appended claims and form a part of the claims. However, for a better understanding of the invention, its advantages, and the objects obtained by its use, reference should be made to the drawings which form a further part hereof, and to accompanying descriptive matter, in which there are illustrated and described one or more preferred embodiments of the invention.
Drawings
The invention will now be described with reference to the accompanying drawings, which illustrate the invention by way of example, and in which:
FIG. 1a is a perspective view of a portion of a fluid flow system showing a connection portion of a fluid conduit coupled to a component connection end portion in accordance with an embodiment of the present invention;
FIG. 1b is a longitudinal cross-sectional view of the assembly of FIG. 1 a;
FIG. 2 is a perspective view of a seal ring of a fluid flow system according to an embodiment of the present invention;
FIG. 3a is a perspective view of a connection portion of a fluid conduit according to an embodiment of the present invention;
FIGS. 3b, 3c and 3d are cross-sectional views through lines IIIb-IIIb, IIIc-IIIc and IIId-IIId, respectively;
FIG. 4a is a plan view of a connection portion of the fluid conduit shown in FIG. 3a, and FIG. 4b is a view of a connection portion of a fluid conduit according to another embodiment of the present invention;
FIGS. 5a and 5b are schematic cross-sectional views through lines Va-Va and Vb-Vb of FIGS. 4a and 4b, respectively, to show the circumferential angles of the corrugated pleat segments;
fig. 6a and 6b are graphical representations of the relationship between insertion displacement during assembly and an applied insertion force that causes a component connection end portion to enter into a connection portion of a fluid conduit for a prior art fluid conduit and a fluid conduit according to an embodiment of the present invention.
FIG. 7a is a perspective view of a connection portion of a fluid conduit according to another embodiment of the present invention;
FIG. 7b is a longitudinal cross-sectional view of the fluid conduit of FIG. 7 a;
fig. 7c is a longitudinal cross-sectional view of the fluid conduit of fig. 7a, 7b coupled to a component connection end portion.
Detailed Description
Referring now to the drawings, wherein like reference numerals designate corresponding structure throughout the several views, and in particular to FIG. 1A, a
The
In a variant, the duct 8 may be coupled to the component
In another variant (not depicted in the figures), the sealing ring may be integrally formed on the inner surface of the pipe, for example by multipart moulding or by other techniques such as welding, adhesive bonding and other bonding techniques known per se.
In a further variant (not depicted in the figures), the sealing ring can also be formed on the component connection end portion.
In an embodiment, the fluid conduit 8 is made of a polymer, preferably a thermoplastic resin, which may comprise aliphatic polyesters (e.g. polylactic acid (PLA)), semi-aromatic copolymers (e.g. polybutylene terephthalate (PBT), polyethylene terephthalate (PET)), aliphatic polyamides (e.g. copolymers such as PA6, PA66, PA46, PA1010, PA610, PA612, PA12, PA11, or copolymers such as PA6/66, PA6/6T, PA66/6T, PA66/610, PA 612/6T), polyethylene (e.g. HDPE, LDPE, LLDPE), polar ethylene copolymers (e.g. ethylene copolymers such as EVOH with unsaturated alcohols, ethylene/acrylic acid copolymers (EAA) such as ionomers, ethylene-vinyl acetate (EVA) ethylene copolymers with unsaturated esters), polypropylene (PP), acrylic resins (e.g., polymethylmethacrylate (PMMA)), Polycarbonate (PC), polylactic acid (PLA), Polyethersulfone (PES), Polyetheretherketone (PEEK), Polyetherimide (PEI), polyphenylene oxide (PPO), polyphenylene sulfide (PPS), Polystyrene (PS), polyvinyl chloride (PVC), Polyimide (PI), thermoplastic elastomers (TPE) (e.g., thermoplastic elastomer copolyesters (TPC-E or TEEE), such as TPC-ET, TPC-EE, TPC, ES, TPC-EC), styrenic block copolymers (TPE-S), Thermoplastic Polyolefins (TPO), thermoplastic vulcanizates (TPV), Thermoplastic Polyurethanes (TPU), thermoplastic polyether block amides (TPE-A), and mixtures or blends of two or more of these polymers.
The fluid conduit 8 may be formed by blow molding or by other molding, injection or extrusion manufacturing methods. The fluid conduit 8 may consist of a homogeneous material or may be formed of a composite material, for example comprising a fibre-reinforced polymer. The fluid conduit 8 may be composed of a single layer (single material) or a co-extrusion or sequential co-extrusion of a multi-layer combination of different materials, including regrind.
In the example shown, the component connecting
In the embodiment of fig. 1b, the cylindrical sealing surface 7 receives the inner sealing surface 11 of the sealing ring 6 against it.
The fluid conduit 8 includes a fluid
In the embodiment of fig. 1a and 1b, the clamping
In the embodiment of fig. 7a and 7b, the clamping
In the illustrated embodiment, the fluid conduit
In the illustrated embodiment, the
In an advantageous embodiment, the sealing ring 6 comprises an
A
The
In an advantageous embodiment, the
In a preferred embodiment, there is an axis preferably surrounding the clamping ring seat 14ATwo or more corrugated
Fig. 6a and 6b illustrate the force of inserting a component into the sealing ring 6 within the fluid conduit
Watch (A)
Thickness of the tube, mm
Insertion force, N, no waveform
Insertion force, N, wave form
Improvements in or relating to
2.2
105.3
75.0
29%
2.5
252.4
144.7
43%
2.9
467.7
366.0
22%
The
In a variant, the expansion folds 20 can also be produced by extrusion or injection moulding together with the other parts of the fluid conduit.
In an embodiment, the
As shown, the
While certain preferred embodiments of the present invention have been described and specifically exemplified above, it is not intended that the invention be limited to such embodiments. Rather, it is to be understood that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, this disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the present invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
List of reference numbers of the attached drawings:
2 fluid flow system (e.g. automobile)
4-part connection end section
5 annular protrusion
7 sealing surface
9 inserting end
6 sealing ring
26 entrance end (entrance flange)
28 middle section
30 end section
32 compression seal projection
34 sealing lip
27 end flange
8 fluid pipeline
10 fluid conduit pipe section
12 fluid conduit connection end portion
14 clamping ring seat
20 expansion fold
20a inclined section
20b circumferential section
16 entry flange
18 pipe joining section
22 inner surface
24 tapered section
25 tapered section
29 top part
15 gap
ACentral longitudinal axis/compression axis/axial direction
CinvForce/displacement curve for inserting a component into a fluid conduit according to the present invention
CprForce/displacement curve for assembling components in a fluid conduit according to the prior art
αCircumferential angle of corrugated expansion fold section
L a 、L b The waveform expands the circumferential length of the pleat section.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:真空隔热件、隔热箱以及真空隔热件的制造方法