CN111059364A

CN111059364A - Fluid conveying pipeline

Info

Publication number: CN111059364A
Application number: CN201911287630.0A
Authority: CN
Inventors: 王德明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-14
Filing date: 2019-12-14
Publication date: 2020-04-24

Abstract

The invention discloses a fluid conveying pipeline, which is used for realizing remote conveying of fluid pipelines and solving the problem that the application safety of the conveying pipeline is poor due to temperature change on the existing fluid pipelines. The deformation that adapts to through the ripple part adapts to the pipeline and brings the change of axial dimension because of receiving the temperature variation for the position stability in the pipeline application is good.

Description

Fluid conveying pipeline

Technical Field

The invention relates to a conveying pipeline for realizing remote conveying of fluid.

Background

In the tap water supply system of petroleum, chemical industry, food and thousands of households, the pipeline is used for realizing the remote transmission of fluid. When the pipeline is installed, the pipeline is often arranged in a wall of a building or buried underground. Once the pipeline is installed, the pipeline is supported by the peripheral support, the firmness of the pipeline is relatively good, and the pipeline is not easy to axially move. The most important requirement of the pipeline is to ensure the sealing performance, and the prevention of leakage is the important factor in daily maintenance of the pipeline. In general, the sealing performance of the entire pipeline is often determined by the sealing performance of the pipe joint, but in the actual application process, not only the joint of the pipeline but also the pipeline itself may be damaged. With the improvement of the social requirement on the safety of drinking water, the plastic water supply pipeline is gradually replaced by a red copper pipe or a stainless steel pipe. Present house is built more high more, after using a period, the building all can face the problem of subsiding, if arrange metal water supply pipe in the wall body, the subsiding of building can bring the influence to water supply pipe basically, and plastic material's water supply pipe can also adapt to this kind of change easily, but metal material's water supply pipe can not adapt to this kind of change well, probably can cause the fracture of local tubular metal resonator.

Chinese patent document (publication No. 106461146B) discloses a fluid line including a pipe body including: an inlet-side end portion having a first connector; an outlet side end portion having a second connector; and comprises: a chamber formed in the tube and bounded radially inwardly by at least one auxiliary component. The problem addressed by the present invention is to minimize the requirements on the pumping performance of pumps used for transporting liquids through pipes. The problem is solved in that a volume reducing member is arranged in the chamber at least in a region of the outlet-side end.

The fluid line is only to take into account the problem of damaging the injector due to freezing of urea caused by too low a temperature during operation. However, the pipeline for realizing the long-distance fluid delivery often has the damage of the pipeline or the pipe joint caused by the external environment temperature change or the settlement of the building, which affects the normal fluid delivery, the fluid delivery safety is relatively poor, and the workload of daily pipeline maintenance is increased.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the fluid conveying pipeline can be well adapted to the influence of external environment change on the pipeline, so that the safety of remote conveying of fluid is good.

In order to solve the technical problem, the technical scheme of the invention is as follows: the utility model provides a fluid conveying pipeline, including the defeated flow tube, the defeated flow tube includes two at least, be provided with the coupling pipe between the tip in opposite directions of two adjacent defeated flow tubes, the both ends of coupling pipe are equipped with the coupling respectively, the coupling between defeated flow tube and the coupling pipe is realized to the coupling pipe, its characterized in that, coupling pipe length direction's middle part position department has the ripple portion, the wall body of ripple portion is the corrugate, in order to adapt to the influence of environmental change to pipeline axial size, the ripple portion has crest and trough, crest and trough all extend for closed loop along the whole periphery of coupling pipe, crest and trough set up on the coupling pipe side by side in turn.

The environmental change refers to the influence caused by the change of the external temperature or the settlement of the building attached to the water supply pipeline. The coupling pipe is generally made of red copper or stainless steel, and the bellows is formed on the coupling pipe by machining. The pipe joint can be a clamping type quick joint and can also be a common threaded connection joint. After the whole pipeline is influenced by temperature change, the generated axial size change can act on the corrugated part, and the size change is counteracted through the deformation on the axes of the wave crests and the wave troughs.

Furthermore, the crest and the trough are both C-shaped along the axial upward section of the connecting pipe, and the crest and the trough are arranged in opposite directions. This makes crest and trough when adapting to pipeline axial dimension change, can the uniform deformation, can not produce stress concentration phenomenon on crest or trough to can effectively guarantee the life of corrugated portion. Especially crest and trough are tangent to be set up, more make crest and trough be equivalent to when the atress form a whole to be convenient for the whole atress of corrugated portion, whole axial force to receiving disperses, is difficult for appearing stress concentration phenomenon.

Further, the wave crests project radially outward of the coupling tube and the wave troughs are within the radial extent of the coupling tube. The size of the corrugated part in the radial direction of the connecting pipe is relatively large, the corrugated part is easier to deform under the action of external force, and the corrugated part can well meet the requirement of the change of the axial size of the pipeline caused by the influence of temperature change.

Further, the peaks and valleys are equal in size and equal in wall thickness. This makes when the atress, crest and trough can take place deformation simultaneously, and the deformation volume can reach unanimity basically to also be convenient for the reverse atress of corrugated portion and can in time reset.

Furthermore, a clamping ring is arranged in the pipe joint, a plurality of clamping jaws are integrally formed at the inner edge of the clamping ring, the clamping jaws extend obliquely towards the middle of the connecting pipe, and the end parts of the clamping jaws are used for being clamped on the peripheral surface of the flow conveying pipe in an oblique manner, so that the flow conveying pipe is stably inserted in the pipe joint. Through the mode of setting up the rand in the coupling, can make things convenient for the rapid Assembly between coupling and the defeated flow tube to also made things convenient for and set up on the pipeline coupling pipe, and the hookup stability between defeated flow tube and the coupling can guarantee.

Furthermore, a disassembling ring is movably inserted in the pipe joint, a chamfer surface is formed at the outer edge of the inner end of the disassembling ring and is used for being abutted against the jaw to enable the end part of the jaw to be separated from the peripheral surface of the flow conveying pipe; and a limiting structure is arranged in the pipe joint and is used for limiting the distance of the ring unloading to axially move into the pipe joint. Through the arrangement of the unloading ring, when the unloading ring moves towards the inner side, the clamping jaws can be spread towards the radial outer side, so that the disassembly between the flow pipe and the pipe joint can be facilitated. Especially, after the limiting structure is arranged, the axial movement distance of the unloading ring can be limited, so that the disassembling operation is convenient.

Furthermore, the limiting structure comprises a gasket which is axially and fixedly arranged in the pipe joint, a plurality of limiting columns are arranged on one end face of the gasket, the end face faces the ring to be disassembled, the limiting columns are arranged along the axial direction of the pipe joint, the limiting columns are separately inserted into the space between every two adjacent clamping jaws, and the end parts of the limiting columns are used for abutting against the inner end part of the ring to realize the limitation of the movement of the ring to be disassembled. The gasket is arranged, so that the limiting column can be conveniently arranged, the gasket can be used as a pressing ring in the pipe joint besides being formed into the limiting column, and is used for pressing the sealing ring, so that the whole structure is compact, and the gasket is convenient to arrange.

Furthermore, a support ring is arranged between the gasket and the clamping ring, the clamping jaws and the limiting columns are located in the support ring, the inner circumferential surface of the support ring is in a truncated cone shape, and the large head end of the inner circumferential surface of the support ring faces towards the clamping ring. The support ring is used for supporting the axial position of rand in the coupling, can adapt to the deformation demand of jack catch on the rand well, is favorable to unloading the effect of circle to the jack catch.

Furthermore, a cylindrical skirt is integrally formed on one end face of the gasket, the skirt and the limiting column are located on the same side of the gasket, and the support ring is inserted into the skirt. Through setting up the skirt portion and cup jointing the cooperation to the support ring, combine spacing post setting in the support ring for the stability of support ring is good, can provide stable support for the rand, and the rand of being convenient for and defeated flow tube cup joint the cooperation, and be convenient for utilize to unload the circle and realize defeated flow tube and the dismantlement of coupling.

Therefore, the invention has the following beneficial effects: by arranging the connecting pipe on the fluid conveying pipeline, after the pipeline is influenced by temperature change or building settlement to generate axial size change, the size change is adapted by utilizing the axial deformation of the corrugated part on the connecting pipe. The pipeline can not become curved due to temperature rise, and the support on the periphery of the pipeline can not be damaged; the pipeline can not excessively pull the pipe joint due to the axial shrinkage caused by the temperature reduction, can not generate larger tension force on the pipe joint, and can not cause damage to the pipeline. Wave crest and trough on the corrugated portion all set up with closed loop shape, and this kind of wave crest and trough can adapt to axial atress deformation well for the axial force that receives can be by on each wave crest or trough by basic equipartition, and the corrugated portion on the coupling pipe can adapt to the axial deformation volume on the pipeline well, thereby can effectively guarantee that the pipeline is difficult for causing the damage because of temperature variation. And, be provided with the ripple portion on the connecting tube, also be convenient for the connecting tube crooked in ripple portion department to also can adapt to the crooked trend of supply channel well, the convenient arrangement to supply channel. The fluid conveying pipeline has good safety for conveying fluid, and can effectively reduce the maintenance amount of the fluid conveying pipeline.

Drawings

Fig. 1 is an external structural view of a coupling pipe applied to the fluid transfer line.

Fig. 2 is a longitudinal sectional view of fig. 1.

Fig. 3 is an enlarged longitudinal sectional view of the pipe joint.

Fig. 4 is an enlarged longitudinal sectional view of the gasket.

Figure 5 is an enlarged longitudinal cross-sectional view of the support ring.

Figure 6 is an enlarged cross-sectional view of the support ring.

In the figure, 1, a connecting pipe; 2. a corrugated portion; 21. wave crest; 22. a trough of a wave; 3. disassembling the ring; 31. a convex ring; 4. a step; 5. a pipe joint; 51. an expanding portion; 511. pressing a port; 52. pressing the cylinder; 53. a claw; 54. a collar; 55. a gasket; 56. a limiting column; 57. a skirt portion; 58. a support ring; 581. a recess; 6. and an O-shaped sealing ring.

Detailed Description

As shown in the figure, the fluid conveying pipeline is used for realizing the remote conveying of fluid, after the external temperature changes, the axial size change of the pipeline caused by the phenomena of expansion with heat and contraction with cold can be offset in time, and the pipeline cannot be bent or contracted to cause unnecessary damage.

The main body part of the fluid conveying pipeline is a plurality of fluid conveying pipes, and the end parts of two adjacent fluid conveying pipes are connected together. The fluid conveying pipeline is connected with a connecting pipe 1 at a certain size position, two ends of the connecting pipe 1 are respectively connected with the end part close to one fluid conveying pipe, and the inside of the connecting pipe 1 forms one part of a fluid channel. Fig. 1 and 2 show that two ends of the connecting pipe 1 are respectively provided with a pipe joint 5, the end of the flow conveying pipe is inserted into the pipe joints 5, and the pipe joints 5 and the end of the flow conveying pipe are fixedly connected in a clamping manner, so that the connecting pipe 1 can be conveniently replaced.

The corrugated part 2 is formed in the middle of the connecting pipe 1 in the length direction, and the change of the axial size of the pipeline caused by temperature change, building settlement or aging shrinkage is adapted through the deformation of the inside of the corrugated part 2. The wall body of the corrugated part 2 is corrugated and is provided with peaks 21 and troughs 22, the peaks 21 and the troughs 22 extend along the whole periphery of the connecting pipe 1 to form a closed loop, and the peaks 21 and the troughs 22 are alternately arranged on the connecting pipe 1 in parallel. The crest 21 and the trough 22 are both C-shaped along the axial section of the connecting pipe 1, and the crest 21 and the trough 22 are arranged reversely. In fig. 2, adjacent peaks 21 and valleys 22 are shown as being tangentially located, and their junction is a smooth arc transition. The wave crests 21 project radially outside the coupling tube 1 and the wave troughs 22 are in the radial extent of the coupling tube 1. The crests 21 and troughs 22 are of equal size and the crests 21 and troughs 22 are of equal wall thickness.

The corrugated part 2 on the connecting pipe 1 can be prepared and formed by a mould, a plurality of protruding annular convex bodies are arranged on the inner wall surface of a mould cavity, and the annular convex bodies are arranged on the inner wall surface of the mould cavity at intervals in parallel. When the preparation is carried out, the tube blank is put into a cavity of the fixed die, the movable die is pressed towards the fixed die during die assembly, and wave troughs 22 are formed on the outer peripheral surface of the tube blank under the pressure welding of the annular convex bodies. Then high-pressure liquid is filled into the tube blank, and under the action of the liquid pressure, wave crests 21 are formed at the intervals between two adjacent wave troughs 22. The wave trough 22 can also be formed on the outer circumferential surface of the tube blank in a roller form, namely, a plurality of protruding press wheels are arranged on the roller corresponding to the wave trough 22, the tube blank and the roller rotate in a relative pressure joint mode, or the tube blank is placed in the interval between a pair of rollers, so that the wave trough 22 is machined, and then the wave crest 21 is formed in the die through high-pressure liquid.

Referring to fig. 3, the pipe joint 5 is provided at the end of the coupling pipe 1, and at the position of the pipe joint 5, the end of the coupling pipe 1 is formed with an enlarged diameter portion 51, the enlarged diameter portion 51 being formed by the end of the coupling pipe 1 after the diameter enlargement operation, and some parts of the pipe joint 5 are provided in the enlarged diameter portion 51. An O-shaped sealing ring 6, a gasket 55, a supporting ring 58, a retainer ring 54 and a detachable ring 3 are respectively arranged on the inner axial direction of the diameter expanding part 51 from inside to outside. A step 4 is formed axially inside the enlarged diameter portion 51, the O-ring 6 rests on this step 4, another step is formed on the inner wall surface of the enlarged diameter portion 51, a gasket 55 rests on this other step, the gasket 55 axially restrains the O-ring 6, but the gasket 55 does not press against the O-ring 6. A support ring 58 rests on washer 55 with axial support provided by washer 55 and a collar 54 rests on support ring 58. A pressing cylinder 52 is further provided in the enlarged diameter portion 51, an inner end portion of the pressing cylinder 52 abuts on a washer 55, and a lower shoulder is formed on an inner wall surface of the pressing cylinder 52 and pressed against a collar 54. The unloading ring 3 is movably inserted in the pressing cylinder 52, the outer end of the unloading ring 3 extends out of the pressing cylinder 52, an upper shoulder is further formed on the inner wall of the pressing cylinder 52 and is matched with a convex ring 31 formed on the outer peripheral surface of the unloading ring 3, and the unloading ring 3 is limited in the pressing cylinder 52 so as to prevent the unloading ring 3 from being separated from the diameter-expanding part 51. An inward pressing opening 511 is formed radially inward of the outer end of the diameter-enlarged portion 51, and the inward pressing opening 511 is pressed against a shoulder of the pressing cylinder 52 to hold the pressing cylinder 52 in the diameter-enlarged portion 51.

The collar 54 and the claws 53 are generally made of stainless steel, the claws 53 are integrally formed at the inner edge of the collar 54, and the claws 53 are projected obliquely toward the middle of the coupling pipe 1. When the connecting pipe 1 is connected with the end part of the flow conveying pipe, the self-discharging ring 3 at the end part of the flow conveying pipe is inserted into the pipe joint 5, the flow conveying pipe passes through the clamping jaw 53 and is inserted into the O-shaped sealing ring 6, and the O-shaped sealing ring 6 is used for providing sealing effect. After the flow pipe is inserted in the pipe joint 5 in place, the end part of the clamping jaw 53 is clamped on the outer peripheral surface of the flow pipe in an inclined mode, and when the flow pipe is pulled outwards, the flow pipe can be stably inserted in the pipe joint 5 under the limiting effect of the end part of the clamping jaw 53.

Due to the design of the corrugation of the coupling tube 1, fouling may occur after a period of use, which usually requires replacement or cleaning of the coupling tube 1. The ring unloading 3 can be used for realizing the quick separation between the pipe joint 5 and the flow pipe, and particularly, a chamfer surface is formed at the outer edge of the inner end of the ring unloading 3, and the chamfer part is arranged to ensure that the inner end of the ring unloading 3 is reduced. When the lock ring 3 is pressed in the direction of the retainer ring 54 in the axial direction, the chamfered surface is pressed against the claws 53 to separate the end portions of the claws 53 from the outer peripheral surface of the flow pipe, and the flow pipe is pulled out to the outside, whereby the separation between the flow pipe and the pipe joint 5 can be realized. If the connecting pipe is installed on a pipeline, the disassembling rings 3 at the two ends of the connecting pipe 1 are required to be operated inwards at the same time, so that the connecting pipe 1 moves towards one direction, the connecting pipe 1 is separated from the end part of the flow conveying pipe at one side, and then the connecting pipe 1 is moved reversely, so that the connecting pipe 1 is separated from the end part of the flow conveying pipe at the other side.

A limit structure is provided in the pipe joint 5 for limiting the distance of axial movement of the removing ring 3 into the pipe joint 5. The limiting structure is arranged on the gasket 55 and comprises a plurality of limiting columns 56. The spacing post 56 is arranged on one end face of the gasket 55 facing the ring removing 3, and the spacing post 56 is arranged along the axial direction of the pipe joint 5. In order to facilitate the arrangement and not influence the insertion and connection of the flow conveying pipe, the limiting columns 56 are arranged at intervals in the circumferential direction, and the limiting columns 56 are inserted into the intervals between the two adjacent clamping claws 53. In the radial direction, the position of the limiting column 56 corresponds to that of the wall body of the unloading ring 3, when the unloading ring 3 moves inwards and axially, the end part of the unloading ring 3 is contacted with the end part of the limiting column 56, the movement of the unloading ring 3 can be limited, so that the clamping jaws 53 are prevented from being irreversibly damaged due to over-violent force, and the acting force on the unloading ring 3 can be effectively reduced.

The supporting ring 58 is used for supporting the clamping ring 54, and the clamping jaws 53 and the limiting columns 56 extend into the supporting ring 58. Referring to fig. 5, the inner circumferential surface of the support ring 58 is truncated cone-shaped, and the large end of the inner circumferential surface of the support ring 58 faces the collar 54, so that the deformation of the claws 53 under the action of the ring 3 can be well accommodated.

Referring to fig. 4, a cylindrical skirt portion 57 is further provided on an end surface of the gasket 55 facing the ring unloading 3, the skirt portion 57 and the limiting post 56 are located on the same side of the gasket 55, and the gasket 55, the limiting post 56 and the skirt portion 57 may be integrally formed, or may be made of stainless steel and fixed by welding. The support ring 58 is inserted between the skirt 57 and the position-limiting column 56, and as shown in fig. 6, an annular notch 581 is formed on the outer peripheral surface of the insertion end of the skirt 57, and the peripheral surface of the notch 581 is abutted with the inner peripheral surface of the skirt 57.

Claims

1. The utility model provides a fluid conveying pipeline, including the defeated flow tube, the defeated flow tube includes two at least, be provided with the coupling pipe between the tip in opposite directions of two adjacent defeated flow tubes, the both ends of coupling pipe are equipped with the coupling respectively, the coupling between defeated flow tube and the coupling pipe is realized to the coupling pipe, a serial communication port, coupling pipe length direction's middle part position department has the ripple portion, the wall body of ripple portion is the corrugate, with the influence of environmental change to pipeline axial dimension, the ripple portion has crest and trough, crest and trough all extend for closed loop along the whole periphery of coupling pipe, crest and trough set up on the coupling pipe side by side in turn.

2. The fluid transfer line of claim 1, wherein the peaks and valleys are C-shaped in cross-sectional shape along the axial direction of the coupling pipe, and the peaks and valleys are reversed.

3. The fluid delivery circuit of claim 2, wherein the peaks project radially outward of the coupling tube and the valleys are within a radial extent of the coupling tube.

4. The fluid delivery circuit of claim 2, wherein the peaks and valleys are of equal size and equal wall thickness.

5. The fluid transfer line of any one of claims 1 to 4, wherein a collar is provided in the pipe connector, a plurality of claws are integrally formed at an inner edge of the collar, the claws extend obliquely toward a middle portion of the coupling pipe, and end portions of the claws are adapted to be obliquely engaged with an outer peripheral surface of the flow pipe so that the flow pipe is stably inserted into the pipe connector.

6. The fluid transfer line of claim 5, wherein a release ring is movably inserted into the pipe connector, and a chamfer surface is formed at the outer edge of the inner end of the release ring and is used for abutting against the jaw to separate the end of the jaw from the outer peripheral surface of the fluid transfer pipe; and a limiting structure is arranged in the pipe joint and is used for limiting the distance of the ring unloading to axially move into the pipe joint.

7. The fluid conveying pipeline according to claim 6, wherein the limiting structure comprises a gasket which is axially and fixedly arranged in the pipe joint, a plurality of limiting columns are arranged on one end face of the gasket, the end face faces the coil unloading, the limiting columns are arranged along the axial direction of the pipe joint, the limiting columns are separately inserted into the space between every two adjacent clamping jaws, and the end parts of the limiting columns are used for abutting against the inner end part of the coil unloading to limit the movement of the coil unloading.

8. The fluid delivery pipe according to claim 7, wherein a support ring is disposed between the gasket and the collar, the jaws and the spacing posts are located in the support ring, an inner circumferential surface of the support ring is in a truncated cone shape, and a large head end of the inner circumferential surface of the support ring faces the collar.

9. The fluid transfer line of claim 8, wherein the gasket has a cylindrical skirt integrally formed on one end face thereof, the skirt and the retaining post being located on the same side of the gasket, and the support ring being inserted into the skirt.