CN218625909U - End joint of flexible pipe - Google Patents
End joint of flexible pipe Download PDFInfo
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- CN218625909U CN218625909U CN202222871881.7U CN202222871881U CN218625909U CN 218625909 U CN218625909 U CN 218625909U CN 202222871881 U CN202222871881 U CN 202222871881U CN 218625909 U CN218625909 U CN 218625909U
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- pipe
- flexible pipe
- way valve
- branch pipe
- exhaust manifold
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Abstract
The utility model relates to an oil and gas pipeline technical field specifically is a flexible pipe end joint, including core pipe, overcoat, the outside of core pipe is located to the fixed cover of overcoat, form annular flexible pipe between overcoat and the core pipe and hold the position, its characterized in that still includes exhaust mechanism, exhaust mechanism includes exhaust manifold, three-way valve, sample branch pipe, environmental protection branch pipe, exhaust manifold connects in the overcoat and holds the position intercommunication with the flexible pipe, exhaust manifold passes through the three-way valve respectively with sample branch pipe and environmental protection branch union coupling. Compared with the prior art, the utility model discloses a flexible pipe end joint passes through the three-way valve, and messenger's exhaust manifold that can the alternative is connected with sample branch pipe or environmental protection branch pipe, and it is swift convenient to switch, has avoided harmful gas's loss to improve sampling efficiency, be applicable to the transformation upgrade to current end joint.
Description
Technical Field
The utility model relates to an oil and gas pipeline technical field specifically is a flexible pipe end joint.
Background
Standard "petroleum and gas industry non-metallic composite pipe part 4: a steel skeleton reinforced thermoplastic plastic composite continuous pipe and a joint (SY/T6662.4) flexible pipe is typically represented by a multilayer flexible composite pipe disclosed by CN103115202B, when the flexible pipe is in service in an acidic environment with high hydrogen sulfide content for a long time, acidic gas can be gathered between an inner lining layer and a protective layer (collectively called as annular space) through osmosis to form a corrosion working condition, a metal reinforcing layer of the flexible pipe faces electrochemical corrosion, even hydrogen embrittlement or sulfide stress corrosion cracking is generated, and the hidden danger of pipe burst failure is increased. The flexible pipe for offshore oil and gas fields outlined by the recommended regulation DNVGL RP F119 is mainly used for flexible oil production pipelines and flexible jumper pipes, the flexible pipe is represented by a marine flexible pipeline disclosed by CN102537544A, and small-molecule acid gas (H) is generated in the long-term service process of the flexible pipe 2 S、CO 2 Etc.) through the infiltration, annular space gathering between lining layer (medium transmission layer) and outer protective layer brings the corruption to each metal functional layer of flexible tube (resistance to compression armor, tensile armor), influences tubular product service life then. Therefore, effective discharge of gas between the inner liner layer and the protective layer of the flexible pipe is becoming an important concern for engineering technicians.
CN215215263U discloses a composite pipe connecting metal joint for conveying fuel gas, which includes a core pipe with a tool clamping surface in the middle section, a left step, a right step or a single left step on the outer side surface of the two sides of the core pipe, and an outer lock pipe control sheath fixed on the step, so that a barrel ring for inserting the composite pipe section is formed between the core pipe and the outer lock pipe control sheath; the core tube between the two steps or between the step and the connecting cylinder tube is provided with a plurality of through holes. The pipe sections which are inserted at the two ends of the composite pipe joint and form a connecting channel can be formed, so that free gas which permeates into each pipe section layer can be communicated and can run out through the end part of the pipeline; greatly reduces the pressure of the permeating gas in the pipe section and ensures the service life of the pipeline.
In order to ensure the reliability and integrity of the flexible pipe, sampling and detecting are required to be performed on the flexible pipe, especially on the annular space state and annular gas component detection of the flexible pipe, so as to determine the environment of the annular space (see the non-bonded flexible pipe annular space detection and exhaust monitoring device disclosed in CN 114689805A). In addition, the method can be used for harmful small-molecule acid gas (such as H) escaping from the flexible pipe 2 S), an environmental protection treatment is required. At present, an exhaust joint is arranged on an end joint of a flexible pipe conveying pipeline, and a sampling bag is connected with the exhaust joint through a rubber hose during sampling; after the sampling is finished, the exhaust joint is connected with the environment-friendly device through a pipeline. This results in needing frequent switching to take a sample hose, environmental protection pipeline and exhaust to connect being connected, and not only the operation is complicated, can cause the gas loss in the switching process moreover, and then brings personnel's poisoning risk and environmental pollution hidden danger.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art, provide a flexible pipe end joint, through the three-way valve, messenger's exhaust manifold that can the alternative and sample branch pipe or environmental protection branch union coupling switch swiftly convenient to avoid harmful gas's loss, and improve sampling efficiency, be applicable to the transformation upgrade to current end joint.
The technical problem to be solved is realized by adopting the following technical scheme: the utility model provides a flexible pipe end joint, includes core pipe, overcoat, the outside of core pipe is located to the fixed cover of overcoat, form annular flexible pipe between overcoat and the core pipe and hold the position, its characterized in that still includes exhaust mechanism, exhaust mechanism includes exhaust manifold, three-way valve, sample branch pipe, environmental protection branch pipe, exhaust manifold connects in the overcoat and holds the position intercommunication with the flexible pipe, exhaust manifold passes through the three-way valve and is connected with sample branch pipe and environmental protection branch pipe respectively.
Compared with the prior art, the utility model discloses a flexible pipe end joint's beneficial effect does: (1) Through the three-way valve, the exhaust main pipe can be quickly switched to be connected with the sampling branch pipe during sampling; after the sampling, the exhaust main pipe can be quickly switched to be connected with the environment-friendly branch pipe. Therefore, the pipeline does not need to be frequently disassembled and assembled, harmful gas can not be dissipated, and the poisoning risk of field personnel is eliminated. (2) Through the three-way valve, messenger's exhaust manifold that can the alternative is connected with sample branch pipe or environmental protection branch pipe to, when taking a sample, can guarantee the output flow of sample branch pipe, improve sample efficiency. And moreover, the influence of a sulfur removing agent on the downstream of the environmental-friendly branch pipe on the sampling precision can be avoided. (3) The sampling is short time compared with the environmental protection treatment, so the sealing requirement of the pipeline connection is relatively low, the sampling branch pipe and the environmental protection branch pipe of the utility model are respectively used for sampling and environmental protection, and joints with high connection speed and low sealing requirement, such as bamboo joint joints, can be arranged at the end part of the sampling branch pipe; and a joint with higher sealing requirements, such as a threaded joint, can be arranged at the end of the environmental branch pipe. Thereby, satisfy the high sealed demand of the quick connection demand of sample and environmental protection processing simultaneously. (4) The exhaust hole does not need to be additionally arranged on the outer sleeve of the existing end connector, and the exhaust hole is suitable for the transformation and the upgrade of the existing end connector.
The technical scheme of the utility model also, the tip of sample branch pipe is equipped with the bamboo joint and connects, the tip of environmental protection branch pipe is equipped with screwed joint.
The technical scheme of the utility model still, the exhaust manifold passes through check valve and three-way valve connection, the check valve is used for making the exhaust manifold to three-way valve one-way conduction. The flexible pipe conveying pipeline can be arranged in the foresea area, and the one-way valve in the scheme can effectively avoid backward flowing of seawater.
The technical scheme of the utility model still, the check valve is valve ball formula check valve.
The technical scheme of the utility model still, the end of sample branch pipe and the end of environmental protection branch pipe all bend to the overcoat. Adopt this technical scheme, for the straight tube, the pipeline of incurving can effectively avoid dust, grit to get into and block up sample branch pipe and environmental protection branch pipe.
The technical scheme of the utility model still including flange, the one end and the flange fixed connection outside core pipe extends to the overcoat.
The technical scheme of the utility model still, the inner wall of overcoat, the outer wall of core pipe all are equipped with the bamboo joint pawl.
The technical scheme of the utility model also, the whole same metal material that adopts of end connection to avoid different metal to connect and lead to galvanic corrosion.
The technical scheme of the utility model still, the holistic material of end connection adopts 316L stainless steel.
The technical scheme of the utility model still, exhaust manifold and overcoat threaded connection.
Drawings
Figure 1 is a perspective view of the end fitting of the flexible pipe of example 1.
FIG. 2 is a main sectional view of the end fitting of the flexible pipe in embodiment 1.
In the figure: 1. core pipe, 2, overcoat, 3, flexible pipe hold the position, 4, exhaust manifold, 5, three-way valve, 6, sample branch pipe, 7, environmental protection branch pipe, 8, bamboo joint connect, 9, screwed joint, 10, check valve, 11, flange, 12, bamboo joint pawl.
Detailed Description
In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present disclosure. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in the description and in the claims of the present disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Example 1
Fig. 1 and 2 show embodiment 1 of the present invention.
A flexible pipe end joint comprises a core pipe 1, an outer sleeve 2, a connecting flange 11 and an exhaust mechanism. The outer sleeve 2 is fixedly sleeved outside the core pipe 1, and an annular flexible pipe accommodating position 3 is formed between the outer sleeve 2 and the core pipe 1. Bamboo joint pawl 12 is arranged on the inner wall of the outer sleeve 2 and the outer wall of the core tube 1 and used for enhancing connection with the flexible tube. One end of the core tube 1 extending out of the outer sleeve 2 is fixedly connected with a connecting flange 11. The connecting flange 11 is used for connection to an insulating flange.
The exhaust mechanism comprises an exhaust main pipe 4, a one-way valve 10, a three-way valve 5, a sampling branch pipe 6 and an environment-friendly branch pipe 7. The exhaust main pipe 4 is in threaded connection with the outer sleeve 2 and is communicated with the flexible pipe containing position 3, the exhaust main pipe 4 is connected with the three-way valve 5 through the one-way valve 10, the one-way valve 10 is used for enabling the exhaust main pipe 4 to be in one-way conduction with the three-way valve 5, and the three-way valve in the embodiment is a valve ball type one-way valve. The three-way valve 5 is respectively connected with a sampling branch pipe 6 and an environment-friendly branch pipe 7. The tail ends of the sampling branch pipes 6 and the tail ends of the environmental protection branch pipes 7 are both bent towards the outer sleeve 2. The end of the sampling branch pipe 6 is provided with a bamboo joint 8, and the end of the environmental protection branch pipe 7 is provided with a threaded joint 9.
The end joints are integrally made of the same metal material, so that galvanic corrosion caused by connection of different metals is avoided. Specifically, in this embodiment, the material of the whole end joint is 316L stainless steel.
Through the three-way valve 5, the exhaust manifold 4 can be quickly switched to be connected with the sampling branch pipe 6 during sampling; after sampling, the exhaust manifold 4 can be quickly switched to be connected with the environmental branch pipe 7. Therefore, the pipeline does not need to be frequently disassembled and assembled, harmful gas can not be dissipated, and the poisoning risk of field personnel is eliminated.
Through three-way valve 5, messenger exhaust manifold 4 that can the alternative is connected with sample branch pipe 6 or environmental protection branch pipe 7 to, when taking a sample, can guarantee sample branch pipe 6's output flow, improve sample efficiency. Moreover, the influence of the sulfur removing agent at the downstream of the environmental protection branch pipe 7 on the sampling precision can be avoided.
Sampling is short relative to environmental protection treatment, so the sealing requirement of pipeline connection is relatively low, the sampling branch pipe 6 and the environmental protection branch pipe 7 in the embodiment are used for sampling and environmental protection respectively, and joints with high connection speed and low sealing requirement, such as a bamboo joint 8 in the embodiment, can be arranged at the end part of the sampling branch pipe 6; and a joint with higher sealing requirements, such as a threaded joint 9 in the embodiment, can be arranged at the end of the environmental branch pipe 7. Thereby, satisfy the high sealed demand of the quick connection demand of sample and environmental protection processing simultaneously.
The end joint of the flexible pipe in the embodiment does not need to be additionally provided with an exhaust hole on the outer sleeve of the existing end joint, and is suitable for the transformation and the upgrade of the existing end joint.
The above description is only for the specific embodiments of the present disclosure, but the scope of the embodiments of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes, substitutions or combinations within the technical scope of the embodiments of the present disclosure or under the spirit of the embodiments of the present disclosure, and all such changes, substitutions or combinations are included in the scope of the embodiments of the present disclosure.
Claims (10)
1. The utility model provides a flexible pipe end joint, includes core pipe (1), overcoat (2), the outside of core pipe (1) is located to overcoat (2) fixed cover, form annular flexible pipe between overcoat (2) and core pipe (1) and hold position (3), its characterized in that still includes exhaust mechanism, exhaust mechanism includes exhaust manifold (4), three-way valve (5), sample branch pipe (6), environmental protection branch pipe (7), exhaust manifold (4) are connected in overcoat (2) and hold position (3) intercommunication with the flexible pipe, exhaust manifold (4) are connected with sample branch pipe (6) and environmental protection branch pipe (7) respectively through three-way valve (5).
2. The end fitting of the flexible pipe according to claim 1, characterized in that the end of the sampling branch pipe (6) is provided with a bamboo joint (8), and the end of the environmental branch pipe (7) is provided with a threaded joint (9).
3. The flexible pipe end fitting of claim 1, characterized in that the exhaust manifold (4) is connected to the three-way valve (5) by a one-way valve (10), the one-way valve (10) being adapted to allow one-way communication of the exhaust manifold (4) to the three-way valve (5).
4. A flexible pipe end fitting according to claim 3, characterized in that the non-return valve (10) is a ball non-return valve.
5. The end fitting according to claim 1, characterized in that the ends of the sampling branch (6) and the environmental branch (7) are bent towards the outer sleeve (2).
6. A flexible pipe end fitting according to any one of claims 1-5, characterized in that it further comprises a connecting flange (11), and the end of the core tube (1) extending beyond the outer jacket (2) is fixedly connected to the connecting flange (11).
7. The end joint of the flexible pipe according to any one of claims 1 to 5, wherein the inner wall of the outer sleeve (2) and the outer wall of the core pipe (1) are provided with bamboo-like inverted teeth (12).
8. The end fitting of any one of claims 1 to 5, wherein the end fitting is formed entirely of the same metal material.
9. The end fitting of claim 8 wherein the end fitting is constructed entirely of 316L stainless steel.
10. A flexible pipe end fitting according to any one of claims 1-5, characterized in that the exhaust manifold (4) is screwed to the outer sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222871881.7U CN218625909U (en) | 2022-10-28 | 2022-10-28 | End joint of flexible pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222871881.7U CN218625909U (en) | 2022-10-28 | 2022-10-28 | End joint of flexible pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218625909U true CN218625909U (en) | 2023-03-14 |
Family
ID=85475364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222871881.7U Active CN218625909U (en) | 2022-10-28 | 2022-10-28 | End joint of flexible pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218625909U (en) |
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2022
- 2022-10-28 CN CN202222871881.7U patent/CN218625909U/en active Active
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