WO2019056145A1

WO2019056145A1 - Fluid diversion device

Info

Publication number: WO2019056145A1
Application number: PCT/CN2017/102156
Authority: WO
Inventors: 陈保同
Original assignee: 东莞好奇智能科技有限公司
Priority date: 2017-09-19
Filing date: 2017-09-19
Publication date: 2019-03-28
Also published as: CN111448417A

Abstract

A fluid diversion device. The device comprises a container (10) and multiple branch pipeline connection devices. Each branch pipeline connection device comprises a fastener (30), a connector (20), and a seal member (40). A guide groove (323) is formed in a thin wall portion of each fastener (30). The fasteners (30) are axially compressed, so that after the fasteners (30) are plastically deformed, the connectors (20) and the container (10) are connected as a whole, and accordingly, the sealing is reliable, and the product processing technology is simple.

Description

Fluid splitting device

Technical field

[0001] The present invention relates to the field of fluid connectors, and more particularly to a connection device for dispensing fluid from a main line to a branch line.

Background technique

[0002] Gas and liquid conveying pipelines are widely used in petroleum, chemical and other industrial fields. In production applications, the fluid in the main pipe or vessel often needs to be connected to multiple branch lines to distribute fluids to meet industrial needs, to achieve sample testing, fluid performance testing, and heat dissipation. The gas source distributor is the most widely used in the industrial field. Chinese patent CN102788246A discloses a gas source distributor, which is a centrally connected starting instrument connected to the gas main pipe, which can be conveniently controlled. The continuity of each pipeline. The Chinese patent CN104180115A considers that the connection method of the prior patent causes the container wall to be too thick, which causes the entire device to be cumbersome, and thus an improvement has been made to invent a thin-wall type fluid flow dividing device. The fluid shunt device disclosed in Chinese Patent No. CN104180115A has a thin wall and a light weight, but the processing and manufacturing process is not good. In this device, the insertion pin must be carried out from the inner end of the container, and after the insertion is completed, the container is further processed. The welding of the end caps, the assembly process, the assembly speed is slow, and finally the welding is easily broken, resulting in seal failure and low yield.

technical problem

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a fluid flow dividing device which can achieve a firm connection and a stable seal by using a thin-walled container and a snap-fit connection, and the device is quick to process.

Problem solution

Technical solution

[0004] A fluid flow dividing device comprising a container and a plurality of branch line connecting devices; the container comprising a cylindrical wall, at least one fluid main channel, wherein the cylindrical wall is provided with a plurality of plastically deformed planes, each of the planes The utility model is provided with a circular hole assembled with a plurality of branch line connecting devices; the branch line connecting device comprises a joint, a fastening member and a sealing member; the joint is substantially round tubular, has a through hole, and has a first end Yulian Connected to the female thread of the external device or pipe, the central thread forms a central hole, the central hole penetrates along the joint axial direction to the second end of the joint, the diameter of the central hole at the second end is smaller than the diameter of the female thread, so that the center hole is close The second end forms an annular platform, and an annular groove is disposed on the end surface of the second end of the joint; the fastening component includes a female thread portion, a thin wall portion, an outer edge portion, a protrusion portion and a center hole, and the inner wall of the thin wall portion is disposed a central hole having a guiding groove and a groove surrounding the thin-walled portion, the central hole of the fastening member penetrating the female thread portion, the thin portion and the outer edge portion; the female thread portion and the thin portion of the fastening member The joints, the seals and the circular holes of the container are sequentially passed through, and under the external force in the axial direction and the opposite direction, the thin-walled portion is plastically collapsed and bulged radially outward toward the thin-walled portion to form a protrusion for fastening. The lower edge of the outer edge of the piece abuts against the annular platform of the joint, and the protrusion abuts against the inner wall of the container surrounding the circular hole, so that the joint forms an axial clamping with the plane of the container, and the sealing member is closed in the groove Inside.

[0005] Further, the guiding groove is located near the female thread portion; the guiding groove is preferably continuous, annular

The guiding groove has the best curved section.

[0006] Further, the thickness of the thin portion of the fastening member is smaller than the thickness of the female thread portion.

Further, the outer diameter of the thin portion is the same as the outer diameter of the female thread portion, and the diameter of the central hole before the thin portion is plasticized is larger than the diameter of the female thread portion. With this structure, in the plastic deformation, the thin portion is more likely to bulge radially outward to form a projection without collapsing radially inward, obstructing the center hole as the flow passage.

[0008] Further, in order to facilitate the insertion of the joint and the round hole assembly, the front end of the female thread portion is in a folded shape.

Further, in order to improve the friction between the fastening member and the inner wall of the container, the fastening member is prevented from being loosened in the axial direction, and the outer wall of the thin portion is provided with a grain or a protrusion to increase the friction between the protrusion and the inside of the container.

[0010] Further, in order to improve the friction between the fastening component and the joint, the joint and the fastening component are prevented from loosening axially, and the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a convex shape. Start.

[0011] The fluid flow dividing device further includes a bleed port for cleaning on the container.

Advantageous effects of the invention

Beneficial effect

[0012] The sealing method of the branch line connecting device and the container in the invention is reliable and the processing technology is simple; in addition, the connection manner of the branch line connecting device and the container adopts a manner of fastening inside the container, and is fastened.吋 only need to operate outside the complete container; the bow guide groove provided on the thin wall portion can guide the entire thin wall portion to bulge radially outward and outward, forming protrusions, ensuring no inward collapse, and ensuring plastic deformation Consistency. In the container Pre-machined flat surfaces on the cylindrical wall provide the desired seal and ensure consistent orientation of multiple joints.

Brief description of the drawing

DRAWINGS

1 is a structural view of a fluid splitting device;

2 is an exploded view of a fluid splitting device;

[0015] FIG. 3 is an axial cross-sectional view of the fastening member;

Figure 4 is an axial cross-sectional view of the joint;

[0017] FIG. 5 is a schematic structural view of a clamping device;

[0018] FIG. 6 is a schematic view of the clamping device and the fastening member after being screwed together;

[0019] FIG. 7 is a schematic view showing the cooperation of the clamping device with the fastening member, the joint, and the sealing member;

[0020] FIG. 8 is a diagram showing a pre-compression state of the fastening device to the fastening member;

[0021] FIG. 9 is a view showing an initial compression state of the fastening device to the fastening member;

10 is an enlarged view of a portion A in FIG. 9;

[0023] FIG. 11 is a view showing a state in which the clamping device is compressed to the fastening member;

12 is a partial cross-sectional view of a fluid flow dividing device.

BEST MODE FOR CARRYING OUT THE INVENTION

[0025] In order to facilitate the understanding of the present invention, the specific embodiments of the present invention and the assembly process will be described in detail below with reference to the accompanying drawings.

Embodiments of the invention

1 , 2, 3, 4, 12, a fluid diverting device includes a container 10 and a plurality of branch line connecting devices; the container 10 includes a circularly-shaped middle section 11 and a gathered front section 12. The gathered rear section 13, the front section 12 and the rear section 13 are integrally joined by a weld bead 16 and a weld bead 17, and form a container having a cavity 19; the front section 12 has a fluid main passage 14, and the rear section 13 has The venting interface 15, the cylindrical wall of the middle section 11 has six planes formed by stamping plastic deformation or tensile deformation, and each plane is provided with a connecting device for connecting with the branch line Assembled circular holes 18; each branch line connection device includes a joint 20, a snap member 30 and a seal 40. The joint 20 has a substantially circular tubular shape with a through hole, the first end 21 having a female thread 22 for connecting an external device or a pipe, and a female hole forming a center hole, the center hole extending through the joint axially to the joint second End 29, the diameter of the central bore at the second end 29 is less than the diameter at the female thread, i.e., the diameter at the location 25 is less than the diameter at the location 28 such that the central bore forms an annular platform 24 adjacent the second end 29 and is in the loop The platform 24 is provided with a grain or a projection, and the end surface 23 at the second end of the joint is a flat surface on which an annular groove 26 is provided. The fastening member 30 includes a female thread portion 33, a thin portion 32, an outer edge portion 31, a protrusion portion 322, and a center hole. The outer diameter of the thin portion 32 is the same as the outer diameter of the female thread portion 33, and the thin portion 32 is molded before The diameter of the central hole is larger than the diameter of the female thread portion, the wall thickness of the thin portion 32 is smaller than the wall thickness of the female screw portion 33, and the inner wall 322 of the thin portion 32 is provided with a guiding groove 323 on the side close to the female screw portion 33, the guiding The groove 323 is a continuous, annular groove, and the guiding groove surrounds the central hole of the thin portion, and the guiding groove 323 has an arc shape; the outer wall of the thin portion 32 is provided with the drawing pattern 321 to improve the fastening member and the container The frictional force of the inner wall, the lower edge 31 1 of the outer edge portion 31 is provided with a grain to improve the frictional force of the fastening member and the joint, and the front end 333 of the female thread portion is in a folded shape, and the center hole of the fastening member 30 penetrates the female thread portion 33. , the thin portion 32 and the outer edge portion 31; the female thread portion 3 3 and the thin portion 32 of the fastening member 30 sequentially pass through the joint 20, the sealing member 40 and the container circular hole 18, and the external force in the axial direction and the opposite direction Under the action, the thin portion 32 is plastically collapsed and bulges radially outward toward the thin portion to form a protrusion. The portion 322 is such that the lower edge 311 of the outer edge portion 31 of the fastening member abuts against the annular platform 24 of the joint, and the protruding portion 322 abuts against the inner wall of the container surrounding the circular hole 18, so that the joint 20 forms an axis with the container plane 112. To clamp, the fastening member 30 is plastically deformed to squeezing the inner wall of the container, but the flat surface 112 of the middle portion 11 of the container is not plastically deformed, so that the container plane 112 is occupied on the second end surface 23 of the joint, and the sealing member 40 is closed. Within the recess 26.

Figure 6 - Figure 12 shows the installation of the branch line of a fluid diverting device, Figure 5 is a schematic view of the clamping device, the specific installation method of the branch line is: the male thread end 521 of the mandrel 52 of the clamping device 50 and The female thread 332 of the female threaded portion of the fastening component is screwed, and the screwing direction is as shown in FIG. 6, and then the folded front end 3 33 of the fastening component is sequentially passed through the joint 20, the sealing member 40, the circular hole 18, and the circle The annular seal 18 is embedded in the recess 26, and the sleeve end 511 is abutted against the upper edge 312 of the fastener, and then the force F1 is applied to the sleeve 51, and the force F2 is applied to the mandrel 52 to The fastener member is axially compressed, and the thin portion 32 firstly forms a bulge 324 radially outward at the guide groove 323. As the axial compression force increases, the bulge 324 pulls the remaining portion of the thin portion to continue. Bulging outward, forming a protrusion 322, and as the force is further increased, the protrusion 322 is abutted in the container 10 The wall is pressed against the inner wall of the container so that the flat surface 112 of the middle portion 11 fits over the end surface 23 of the joint 20, and finally the mandrel 52 and the female thread portion 33 are rotated, and the installation of a branch line is completed as shown in FIG. Install the remaining branch lines in the same way as above. Pre-processing a flat surface on the cylindrical wall of the container without pre-processing the plane of the cylindrical wall of the container provides a more ideal sealing effect and ensures uniformity of orientation of the plurality of joints.

Experiments have shown that the guiding groove 323 is disposed on the inner wall to be more effective than the outer wall; the curved portion is arranged in an arc shape to ensure that the guiding groove 323 does not break during deformation, and the outwardly bulging protrusion 322 has a more regular shape and a clamping force. The continuous, annular structured guide groove 323 ensures that the raised projections 322 are plastically consistent and clamped.

Claims

Claim

[Claim 1] A fluid flow dividing device, comprising: a container and a plurality of branch line connecting devices; the container comprising a cylindrical wall, at least one fluid main channel, and a plurality of plastically deformed planes disposed on the cylindrical wall, Each plane is provided with a circular hole assembled with a plurality of branch line connecting devices; the branch line connecting device comprises a joint, a fastening member and a sealing member; the joint has a circular tubular shape, has a through hole, and the first end has a female thread for connecting an external device or pipe, the central hole extending axially along the joint to the second end of the joint, the diameter of the central hole at the second end being smaller than the diameter of the female thread, such that the central hole forms a ring near the second end a platform, an annular groove is arranged on the second end surface of the joint; the fastening component comprises a female thread portion, a thin wall portion, an outer edge portion, a protrusion portion and a central hole, and the inner wall of the thin wall portion is provided with a central hole a guiding groove, the central hole of the fastening member penetrates the female thread portion, the thin wall portion and the outer edge portion; the female thread portion and the thin wall portion of the fastening member sequentially pass through the joint, the seal and the container circle Under the external force in the axial direction and the opposite direction, the thin-walled portion is plastically collapsed and bulged radially outward of the thin-walled portion to form a protrusion so that the lower edge of the outer edge portion of the fastening member abuts against the joint. On the annular platform, the protrusion abuts against the inner wall of the container surrounding the circular hole, so that the joint forms an axial clamping with the plane of the container, and the sealing member is enclosed in the groove.

[Claim 2] The fluid bypass device according to claim 1, wherein: the guiding groove is annular

[Claim 3] The fluid flow dividing device according to claim 2, wherein the guiding groove is continuous.

[Claim 4] The fluid bypass device according to claim 2, wherein the guide groove is located near the female screw portion.

[Clave 5] The fluid bypass device according to claim 2, wherein the guide groove has a curved cross section.

[Claim 6] The fluid bypass device according to claim 1, wherein the thickness of the thin portion of the engaging member is smaller than the thickness of the female thread portion.

[Claim 7] The fluid flow dividing device according to claim 1, wherein: the outer diameter of the thin portion is the same as the outer diameter of the female thread portion, and the diameter of the central hole before the thin wall portion is larger than the diameter of the female thread portion

[Claim 8] The fluid bypass device according to claim 1, wherein the front end of the female thread portion of the fastening member is in a folded shape.

[Claim 9] The fluid bypass device according to claim 1, wherein the outer wall of the thin portion is provided with a grain or a projection.

[Claim 10] The fluid flow dividing device according to claim 9, wherein the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a protrusion.

[Claim 11] The fluid flow dividing device according to claim 1, wherein the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a protrusion.

[Claim 12] The fluid diverting device of claim 1, wherein: the fluid diverting device further comprises a bleed port for cleaning on the container.