CN212900332U - Novel taper sleeve connection type joint and sealing structure thereof - Google Patents
Novel taper sleeve connection type joint and sealing structure thereof Download PDFInfo
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- CN212900332U CN212900332U CN202021621449.7U CN202021621449U CN212900332U CN 212900332 U CN212900332 U CN 212900332U CN 202021621449 U CN202021621449 U CN 202021621449U CN 212900332 U CN212900332 U CN 212900332U
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Abstract
The utility model discloses a novel taper sleeve connection type joint and a sealing structure thereof, which relates to the technical field of composite material pipe connection devices, and comprises a composite material pipe, a pipeline joint mechanism for connecting pipelines, and a joint sealing structure, wherein the pipeline joint mechanism is provided with a joint inner core, a joint conical body and a joint outer sheath; the joint sealing structure is provided with an O-shaped sealing ring, and the O-shaped sealing ring comprises a first O-shaped sealing ring arranged on the inner side of the flange end face of the joint inner core and a second O-shaped sealing ring arranged at the front end of the joint inner core. The utility model discloses simple structure, simple to operate, the tube coupling is reliable and stable, and the atress is even.
Description
Technical Field
The utility model relates to a deep sea oil gas exploitation conveying equipment technical field, concretely relates to deep sea oil gas carries taper sleeve connection type joint and seal structure of thermoplasticity bonding combined material pipe of usefulness.
Background
The exploitation of deep sea oil and gas resources has become a main trend of petroleum development in the world at present, and a flexible composite pipe as a typical non-metal composite pipe has a series of advantages of corrosion resistance, flexibility, convenience in transportation and construction and the like, and has become a main development direction of deep sea oil and gas resource development. The pipeline connecting joint is used as a pipeline system terminal connecting device, is an important structure in a pipeline system, is also the link which is most prone to failure in the pipeline system, and is mainly used for connecting a pipeline and other devices, sealing medium conveying inside the pipeline, preventing the pipeline from being pulled out and the like.
The joint of the connecting joint and the pipeline is a weak link in the whole pipeline system, and the connecting joint is easily damaged under the action of complex load, so that the leakage of a conveying medium is caused. At present, the nonmetal composite material pipe is connected by the buckling and pressing joint commonly used in China, but because the buckling and pressing joint has installation errors, the deformation of the joint and the body of the composite material pipe is easy to be inconsistent, so that the stress concentration is generated at the joint of the joint and the composite material pipe, and the connection strength of the joint is limited, so that the joint is less applied to a large-diameter high-pressure pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model discloses be exactly to current oil field withhold and connect the technical problem that the phenomenon was revealed to oil gas appears easily when connecting the big pipe diameter pipeline of deep sea high pressure, provide a novel taper sleeve connection type connects and seal structure thereof.
In order to solve the technical problem, the utility model comprises a composite material pipe, a pipe joint mechanism for connecting the pipe and a joint sealing structure, wherein the pipe joint mechanism is provided with a joint inner core, a joint conical body and a joint outer sheath; the joint sealing structure is provided with an O-shaped sealing ring, and the O-shaped sealing ring comprises a first O-shaped sealing ring arranged on the inner side of the flange end face of the joint inner core and a second O-shaped sealing ring arranged at the front end of the joint inner core.
Preferably, the composite material pipe sequentially comprises a composite material pipe outer protective layer, a composite material pipe reinforcing layer and a composite material pipe inner liner layer from outside to inside.
Preferably, one side of the joint outer sheath, which is close to the joint inner core, is connected with the joint inner core through flange bolts.
Preferably, the joint inner core is connected with the composite material pipe in an interference fit manner.
Preferably, the adapter cone is of a six-equal-section structure.
Preferably, the height of the installation position of the first O-shaped sealing ring is lower than that of the lining layer of the composite material pipe, and the installation position of the second O-shaped sealing ring does not exceed the joint conical body.
Preferably, a fixing rope is arranged in the groove at the outer side of the joint conical body.
Compared with the prior art, the utility model discloses possess following beneficial effect:
the utility model has simple structure and convenient installation, is used for sealing the conveying medium in the pipeline by arranging the first O-shaped sealing ring and the second O-shaped sealing ring, and balances the axial load by the contact friction force generated by extrusion sealing; in addition, in order to ensure that the composite material pipe is uniformly stressed, the joint conical body is processed into a six-equal-part structure, so that the phenomenon that the stress of a pressing surface is nonuniform in the installation process of the joint can be effectively avoided. The inner core of the middle joint of the utility model is in interference fit with the composite material pipe, thereby ensuring the joint to be fully contacted with the composite material pipe; by screwing the flange bolt between the joint outer sheath and the joint inner core, the axial force acting on the joint outer sheath is converted into the radial force acting on the composite material pipe through the joint conical body, so that the joint conical body and the joint inner core compress the pipeline, and extrusion sealing is formed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of the joint of the present invention;
FIG. 2 is a schematic structural view of the joint inner core and its sealing groove of the present invention;
FIG. 3 is a schematic structural view of the cone of the present invention;
fig. 4 is a schematic structural view of the joint outer sheath of the present invention;
FIG. 5 is a schematic view of a portion of the enlarged structure of FIG. 1;
fig. 6 is a schematic diagram of a partial enlarged structure at B in fig. 1 according to the present invention.
The symbols in the figures indicate:
1. a composite tube; 11. a composite pipe outer protective layer; 12. a composite tube reinforcement layer; 13. a composite pipe liner layer; 2. a joint inner core; 3. a joint taper; 4. a connector outer sheath; 5. a flange bolt; 6, O-shaped sealing rings; 61. a first O-ring seal; 62. and a second O-shaped sealing ring.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention. The terms used in the utility model are conventional terms in the industry if no special provisions are made.
Referring to fig. 1 to 6, the present invention provides a taper sleeve connection type joint and a sealing structure thereof, which is mainly used for a thermoplastic bonding composite material pipe for deep sea oil gas transportation, and includes a composite material pipe 1 and a pipe joint mechanism for connecting pipes.
The composite material pipe 1 sequentially comprises a composite material pipe outer protective layer 11, a composite material pipe reinforcing layer 12 and a composite material pipe inner liner layer 13 from outside to inside, and the pipe joint mechanism comprises a joint inner core 2, a joint conical body 3 and a joint outer sheath 4. The joint inner core 2 is positioned at the innermost layer of the composite material pipe 1 and is connected with the composite material pipe 1 in an interference fit manner; because the composite pipe 1 can have certain out-of-roundness, the joint inner core 2 and the composite pipe 1 are in interference fit, and the interference magnitude is kept in a certain range, so that the pipeline joint can be ensured to be in full contact with a pipeline.
The joint conical body 3 is arranged on the outermost layer of the composite material pipe 1, the joint conical body 3 is an important component in the pipeline joint mechanism, in order to enable the composite material pipe 1 to be evenly stressed, the joint conical body 3 is processed into a six-equal-part structure, the joint conical body 3 is evenly distributed on the outer side of a pipeline, and the phenomenon that the stress of a pressing surface of the joint caused in the installation process is uneven can be effectively avoided.
The joint outer sheath 4 is arranged on the outer side of the joint conical body 3, one side, close to the joint inner core 2, of the joint outer sheath 4 is connected with the joint inner core 2 through flange bolts, and the joint outer sheath 4 plays a role in transmission in the pipeline joint mechanism. Through screwing up flange bolt 5 between joint oversheath 4 and the joint inner core 2 to the axial force that will act on joint oversheath 4 converts the radial force that acts on at combined material pipe 1 into through joint conical body 3, presss from both sides tight combined material pipe 1 under the combined action of joint conical body 3 and joint inner core 2, thereby forms extrusion seal, and sealed effect is reliable and stable.
Furthermore, the joint sealing structure is further provided with an O-shaped sealing ring 6, the O-shaped sealing ring 6 is used for sealing and conveying medium pressure, and the O-shaped sealing ring 6 comprises a first O-shaped sealing ring 61 arranged on the inner side of the flange end face of the joint inner core 2 and a second O-shaped sealing ring 62 arranged at the front end of the joint inner core 2. The height of the installation position of the first O-shaped sealing ring 61 is lower than that of the lining layer 13 of the composite material pipe, so that the pipeline bearing performance is prevented from being reduced due to the fact that a conveying medium corrodes the reinforcing layer 12 of the composite material pipe; the installation position of the second O-ring 62 does not exceed the joint cone 3, so as to ensure that the joint cone 3 can effectively compress the second O-ring 62.
The utility model discloses a theory of operation does: firstly, the O-shaped sealing ring 6 is installed, the first O-shaped sealing ring 61 and the second O-shaped sealing ring 62 are installed in the flange end face of the joint inner core 2 and the sealing groove at the front end respectively, and after the O-shaped sealing ring 6 is installed, lubricating oil is smeared on the outer surface of the joint inner core 2 to reduce the installation force of the joint inner core. Secondly, after the installation of the joint inner core 2 is finished, the joint conical bodies 3 with the six-petal structures are uniformly distributed on the outermost side of the composite material pipe 1, and fixing ropes can be installed in three grooves on the outer sides of the joint conical bodies 3 to fix the joint conical bodies 3. Finally, after the joint conical body 3 is installed, the joint outer sheath 4 is installed, the flange bolt 5 between the joint inner core 2 and the joint outer sheath 4 is screwed down to install the joint outer sheath 4, so that the axial force acting on the joint outer sheath 4 is converted into the radial force acting on the composite material pipe 1 through the joint conical body 3, the joint conical body 3 and the joint inner core 2 are pressed against the pipe, and extrusion sealing is formed.
After the pipeline joint mechanism is installed, the joint inner core 2 and the composite material pipe 1 are in interference fit, and the O-shaped sealing ring 6 is initially deformed under the action of interference force generated by interference, so that a certain initial sealing effect is formed. When the pipeline is filled with high-pressure medium, the O-shaped sealing ring 6 is further compressed under the action of the pressure of the medium, so that the sealing effect of the O-shaped sealing ring 6 is enhanced. The high-strength flange bolt 5 between the joint inner core 2 and the joint outer sheath 4 is screwed down, so that the joint conical body 3 and the joint inner core 2 clamp a pipeline, a certain connecting strength is provided for a pipeline joint mechanism, and the joint is prevented from being pulled off under the action of a high-pressure medium.
The utility model discloses simple structure, simple to operate, it is sealed effectual, pipeline joint mechanism mainly uses O type sealing washer to seal as the main, and extrusion seal is for assisting, mainly through the sealed transport medium of O type circle, relies on the contact friction who extrusion seal produced to come balanced axial load.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," "includes," "including," "has been provided with," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (7)
1. A novel taper sleeve connection type joint and a sealing structure thereof comprise a composite material pipe and a pipeline joint mechanism for connecting the pipeline, and are characterized by further comprising a joint sealing structure, wherein the pipeline joint mechanism is provided with a joint inner core, a joint conical body and a joint outer sheath, the joint inner core is arranged on the innermost layer of the composite material pipe, the joint conical body is arranged on the outermost layer of the composite material pipe, and the joint outer sheath is arranged on the outer side of the joint conical body; the joint sealing structure is provided with an O-shaped sealing ring, and the O-shaped sealing ring comprises a first O-shaped sealing ring arranged on the inner side of the flange end face of the joint inner core and a second O-shaped sealing ring arranged at the front end of the joint inner core.
2. The novel taper sleeve connection type joint and the sealing structure thereof according to claim 1, wherein the composite material pipe comprises a composite material pipe outer protection layer, a composite material pipe reinforcing layer and a composite material pipe inner lining layer in sequence from outside to inside.
3. The new taper sleeve connection type joint and the sealing structure thereof according to claim 1, wherein the side of the joint outer sheath close to the joint inner core is connected with the joint inner core by a flange bolt.
4. The new taper sleeve connection type joint and its sealing structure according to claim 3, wherein the joint inner core is connected with the composite material pipe by interference fit.
5. The new taper sleeve connection type joint and its seal structure according to claim 4, wherein the joint cone is a sextant structure.
6. The novel taper sleeve connection type joint and the sealing structure thereof according to claim 2, wherein the mounting position of the first O-shaped sealing ring is lower than the height of the inner lining layer of the composite material pipe, and the mounting position of the second O-shaped sealing ring does not exceed the conical body of the joint.
7. The new taper sleeve connection type joint and its sealing structure according to claim 5 or 6, wherein a fixing rope is installed in the groove on the outside of the joint cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021621449.7U CN212900332U (en) | 2020-08-06 | 2020-08-06 | Novel taper sleeve connection type joint and sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021621449.7U CN212900332U (en) | 2020-08-06 | 2020-08-06 | Novel taper sleeve connection type joint and sealing structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN212900332U true CN212900332U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021621449.7U Active CN212900332U (en) | 2020-08-06 | 2020-08-06 | Novel taper sleeve connection type joint and sealing structure thereof |
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| CN (1) | CN212900332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028158A (en) * | 2021-04-09 | 2021-06-25 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
-
2020
- 2020-08-06 CN CN202021621449.7U patent/CN212900332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028158A (en) * | 2021-04-09 | 2021-06-25 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
| CN113028158B (en) * | 2021-04-09 | 2022-01-04 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A new cone sleeve connecting joint and its sealing structure Effective date of registration: 20220328 Granted publication date: 20210406 Pledgee: Zhangjiachan sub branch of Shandong Wendeng Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG GUANTONG PIPE INDUSTRY CO.,LTD. Registration number: Y2022980003344 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230331 Granted publication date: 20210406 Pledgee: Zhangjiachan sub branch of Shandong Wendeng Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG GUANTONG PIPE INDUSTRY CO.,LTD. Registration number: Y2022980003344 |