Petrochemical engineering pipeline connecting structure
Through the design of the petrochemical pipeline connection structure, the tightly sealing circle of the connecting structure is used and the radial pressure tightening force is provided through the hug to solve the problem of loosening and leaking pipeline connections under high -current speed conditions, and a more stable connection and sealing effect are achieved Essence
Patent Information
- Application Number
- CN202420912053.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-28
AI Technical Summary
Petrochemical pipelines are prone to loosening of the joint thread connection due to the impact of crude oil under high flow velocity conditions, resulting in crude oil leakage or even falling off accidents.
A kind of petrochemical pipeline connection structure is designed, including the joint structure and hug. The joint structure is clamped by the first sealing ring through the first connector and the second connector, and the joints and pipelines are tightened through the hug on the radial pipe to ensure that the sealing ring is compressed by the radial upward, and the sealing of the pipeline is achieved.
Effectively improve the connection stability and sealing effect of the docking parts of the petrochemical pipeline, prevent crude oil leakage, and reduce the risk of accidents.
Smart Images
Figure CN222416471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline installation and connection, in particular to a petrochemical pipeline connection structure. Background Art
[0002] Pipeline transportation is the most economical and reasonable way to transport crude oil. When transporting crude oil through pipelines, the connection between oil pipes is usually made by using oil pipe couplings. When the flow rate of crude oil increases, the crude oil impacts the cross section of the end of the oil pipe, causing the oil pipe to be continuously thrust outward. The threaded connection between the oil pipe and the coupling can easily be loosened by the impact during use, causing crude oil leakage, and even falling off in serious cases, causing accidents. Utility Model Content
[0003] The main purpose of the utility model is to provide a petrochemical pipeline connection structure, aiming to improve the connection stability of the butt joint of the petrochemical pipeline.
[0004] To achieve the above-mentioned purpose, the petrochemical pipeline connection structure proposed by the utility model includes:
[0005] A joint structure, the joint structure comprising a first joint, a second joint and a first sealing ring, the first joint and the second joint are respectively used to be sleeved on the butt joint of the first pipe and the second pipe, the first joint and the second joint are connected by bolts in the axial direction of the pipe, the inner end of the first sealing ring is clamped between the two end surfaces of the first pipe and the second pipe facing each other, the first joint and the second joint clamp the outer end of the first sealing ring, and the outer end of the first sealing ring faces the pipe and abuts against the outer side walls of the first pipe and the second pipe;
[0006] The clamp comprises a first clamping portion and a second clamping portion, wherein the first clamping portion and the second clamping portion are respectively arranged at the outer edge of the joint structure, and the first clamping portion and the second clamping portion are fixed by bolts to clamp the joint structure and the first pipe and the second pipe in the radial direction of the pipe.
[0007] In one embodiment, the cross-sectional shape of the first sealing ring is T-shaped.
[0008] In one embodiment, an inner edge of the first sealing ring is flush with inner edges of the first pipe and the second pipe.
[0009] In one embodiment, the first joint and the second joint are symmetrically arranged at the outer edge of the butt joint, and the first joint and the second joint are respectively in contact with the first sealing ring on one side facing the pipeline.
[0010] In one embodiment, the second joint overlaps the outer edge of the first joint, and the side of the first joint facing away from the second joint abuts against the first sealing ring.
[0011] In one embodiment, the petrochemical pipeline connection structure further includes a second sealing ring, and the first joint and the second joint are respectively formed with sealing grooves near the inner edges of the first pipeline and the second pipeline, and a second sealing ring is clamped in one of the sealing grooves.
[0012] In one embodiment, at least two sealing grooves are provided on the first joint and the second joint, and the sealing grooves are arranged at intervals along the extension direction of the pipeline, and one of the second sealing rings is clamped in one of the sealing grooves.
[0013] In one embodiment, the first sealing ring includes an inner layer and an outer layer, the outer layer is coated on the outer side of the inner layer, and the inner layer and the outer layer are made of different materials.
[0014] In one embodiment, the outer layer is made of hydrogenated nitrile butadiene rubber, and the inner layer is made of ethylene propylene diene monomer rubber.
[0015] In one embodiment, the petrochemical pipeline connection structure further includes a waterproof coating, and the waterproof coating is applied to the outer edge of the connection position between the first joint and the second joint.
[0016] The technical solution of the utility model is to set a first sealing ring at the butt joint of the first pipe and the second pipe for sealing, and clamp the first sealing ring by the first joint and the second joint to ensure the sealing of the butt joint in the axial direction, and clamp the first joint and the second joint in the radial direction of the pipe by a clamp so as to compress the first sealing ring and the outer wall of the pipe in the radial direction, so that the first sealing ring is subjected to a compressive force in the radial direction to seal the first connected pipe and the second connected pipe, thereby ensuring the connection effect of the first pipe and the second pipe and improving the stability of the butt joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0018] Figure 1 A three-dimensional structural diagram of an embodiment of a petrochemical pipeline connection structure provided by the utility model;
[0019] Figure 2 for Figure 1 Front view of the pipeline connection structure of Sinopec;
[0020] Figure 3 for Figure 1 Cross-sectional view of the pipeline connection structure at AA of Sinopec.
[0021] Description of Figure Numbers:
[0022] 1000. Petrochemical pipeline connection structure; 1. Joint structure; 11. First joint; 12. Second joint; 13. First sealing ring; 2. Hoop; 21. First clamping part; 22. Second clamping part; 3. Second sealing ring; 100. First pipeline; 200. Second pipeline.
[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0027] Pipeline transportation is the most economical and reasonable way to transport crude oil. When transporting crude oil through pipelines, the connection between oil pipes is usually made by using oil pipe couplings. When the flow rate of crude oil increases, the crude oil impacts the cross section of the end of the oil pipe, causing the oil pipe to be continuously thrust outward. The threaded connection between the oil pipe and the coupling can easily be loosened by the impact during use, causing crude oil leakage, and even falling off in serious cases, causing accidents.
[0028] In order to solve the above problems, the utility model proposes a petrochemical pipeline connection structure 1000, including a joint structure 1 and a clamp 2, the joint structure 1 includes a first joint 11, a second joint 12 and a first sealing ring 13, the first joint 11 and the second joint 12 are respectively used to be sleeved on the butt joint of the first pipeline 100 and the second pipeline 200, the first joint 11 and the second joint 12 are connected by bolts in the axial direction of the pipeline, the inner end of the first sealing ring 13 is clamped between the two end surfaces of the first pipeline 100 and the second pipeline 200 facing each other, The first joint 11 and the second joint 12 clamp the outer end of the first sealing ring 13, and the outer end of the first sealing ring 13 faces the side of the pipeline and abuts against the outer side walls of the first pipeline 100 and the second pipeline 200; the clamp 2 includes a first tightening portion 21 and a second tightening portion 22, and the first tightening portion 21 and the second tightening portion 22 are respectively arranged on the outer edge of the joint structure 1, and the first tightening portion 21 and the second tightening portion 22 are fixed by bolts to tighten the joint structure 1 and the first pipeline 100 and the second pipeline 200 along the radial direction of the pipeline.
[0029] The technical solution of the utility model is to set a first sealing ring 13 at the butt joint of the first pipe 100 and the second pipe 200 for sealing, and clamp the first sealing ring 13 by the first joint 11 and the second joint 12 to ensure the sealing of the butt joint in the axial direction, and clamp the first joint 11 and the second joint 12 in the radial direction of the pipe by the clamp 2 so that the first sealing ring 13 and the outer wall of the pipe are radially compressed, so that the first sealing ring 13 is subjected to a compression force in the radial direction to seal the first connected pipe and the second connected pipe, thereby ensuring the connection effect of the first pipe 100 and the second pipe 200 and improving the stability of the butt joint.
[0030] In an optional embodiment, in order to ensure the sealing effect of the first sealing ring 13, the cross-sectional shape of the first sealing ring 13 is T-shaped. Figures 1 to 3, the inner end of the first sealing ring 13 is respectively sandwiched between the end faces of the first pipe 100 and the second pipe 200 facing each other. The first sealing ring 13 is squeezed to deform when the pipe is installed to fill the gap between the first pipe 100 and the second pipe 200, thereby ensuring the sealing effect between the two. In addition, the outer end of the first sealing ring 13 is squeezed by the first joint 11 and the second joint 12 on the outside of the pipe and pressed toward the direction close to the pipe to fill the gap between the first pipe 100 and the outside of the second pipe 200, thereby further improving the connection and sealing effect between the first pipe 100 and the second pipe 200. Optionally, the cross-sectional shapes of the first sealing ring 13 and the second sealing ring 3 can be freely selected. In this embodiment, the inner and outer ends of the first sealing ring 13 are both rectangular, and the overall cross-sectional shape is T-shaped. In other embodiments, the cross-sectional shape of the first sealing ring 13 can be semicircular or trapezoidal, which is not specifically limited here.
[0031] Furthermore, to facilitate the flow of fluid in the petrochemical pipeline, the inner edge of the first sealing ring 13 is flush with the inner edges of the first pipeline 100 and the second pipeline 200. Figure 1 and Figure 3 The inner side surface of the first sealing ring 13 is aligned with the inner side surfaces of the first pipe 100 and the second pipe 200, so as to avoid the formation of a groove at the position of the first sealing ring 13 due to the small radial thickness of the sealing ring, or the formation of a bulge due to the radial thickness of the sealing ring, which causes the fluid inside the pipe to form turbulence at the docking position and disrupt the normal flow of the fluid inside the pipe. The first sealing ring 13 is kept as flush as possible with the inner edges of the first pipe 100 and the second pipe 200, so as to ensure that the fluid inside the pipe is in a relatively stable flow state, and the impact of the fluid on the pipe wall and the docking position can also be reduced.
[0032] In an optional embodiment, in order to achieve fixed installation of the first sealing ring 13, the first joint 11 and the second joint 12 are symmetrically arranged at the outer edge of the docking part, and the first joint 11 and the second joint 12 are respectively in contact with the first sealing ring 13 on one side facing the pipeline. Figure 3 The first joint 11 and the second joint 12 are symmetrically arranged on both sides of the outer end of the first sealing ring 13, and respectively form abutment limit on the outer end of the first sealing ring 13 through their inner side walls, so that the outer end of the first sealing ring 13 is compressed to fill the gap between the first pipe 100 and the second pipe 200, thereby ensuring the sealing effect of the docking part.
[0033] In another optional embodiment, the second joint 12 overlaps the outer edge of the first joint 11, and the side of the first joint 11 facing away from the second joint 12 abuts against the first sealing ring 13. In addition to symmetrically arranging the first joint 11 and the second joint 12 on the left and right of the first sealing ring 13, the first sealing ring 13 can also be installed and fixed by cross-stacking the first joint 11 and the second joint 12, by making the inner side wall and the inner top wall of the first joint 11 facing the first sealing ring 13 abut against the side wall and the top wall of the first sealing ring 13 at the docking position, and then by stacking the second joint 12 on the outside of the first joint 11, so that the inner side wall and the inner top wall of the second joint 12 are respectively abutted against the other side wall of the first sealing ring 13 and the outer top wall of the first joint 11. In this way, the first sealing ring 13 is installed and fixed by stacking the first joint 11 and the second joint 12, and its fixing effect can also be guaranteed.
[0034] In an optional embodiment, in order to further improve the sealing effect of the docking part, the petrochemical pipeline connection structure 1000 further includes a second sealing ring 3, the first joint 11 and the second joint 12 are respectively formed with sealing grooves near the inner edges of the first pipe 100 and the second pipe 200, and the second sealing ring 3 is clamped in one of the sealing grooves. Figure 3 A sealing groove is formed at one end of the first joint 11 and the second joint 12 away from the first sealing ring 13, and a second sealing ring 3 is correspondingly arranged in a sealing groove to further improve the sealing effect between the outer sides of the first pipe 100 and the second pipe 200 and the docking part. Optionally, the second sealing ring 3 can be a water-swelling sealing ring. When external water vapor enters the position of the second sealing ring 3 through the gap between the docking part and the outer wall of the pipe, the second sealing ring 3 absorbs water and expands to further squeeze and fill the surrounding gaps, thereby preventing water vapor from continuing to penetrate, thereby ensuring the sealing effect of the docking part.
[0035] Optionally, in order to further ensure the anti-permeation effect of the second sealing ring 3, at least two sealing grooves are provided on the first joint 11 and the second joint 12, and each of the sealing grooves is arranged at intervals along the extension direction of the pipeline, and one of the second sealing rings 3 is clamped in the sealing groove. By arranging two or more sealing grooves at intervals in the axial direction of the first joint 11 and the second joint 12, and clamping the second sealing ring 3 in each sealing groove, a multi-layer protection is provided in the axial direction of the first joint 11 and the second joint 12 to improve the sealing effect of the docking part. Optionally, a second sealing ring 3 can also be provided at the connection between the first joint 11 and the second joint 12 to ensure the sealing effect between the first joint 11 and the second joint 12, and prevent water vapor from penetrating from the gap between the first joint 11 and the second joint 12 to affect the sealing effect of the docking part.
[0036] In an optional embodiment, in order to improve the service life of the first sealing ring 13, the first sealing ring 13 includes an inner layer and an outer layer, the outer layer is coated on the outside of the inner layer, and the inner layer and the outer layer are made of different materials. The first sealing ring 13 is applied to petrochemical pipelines, and the outer layer is in direct contact with the petrochemical pipelines, the first joint 11 and the second joint 12, so it needs better wear resistance and corrosion resistance to reduce the wear and tear generated during use. In this solution, the outer layer is made of hydrogenated nitrile butadiene rubber, and the inner layer is made of ethylene propylene diene monomer rubber. Hydrogenated nitrile butadiene rubber has the characteristics of wear resistance, corrosion resistance, tear resistance and compression deformation resistance, which can minimize the influence of the surrounding environment during use. EPDM rubber has good weather resistance, water resistance and chemical resistance, which further guarantees the sealing effect of the first sealing ring 13.
[0037] In an optional embodiment, in order to prevent the petrochemical pipeline connection structure 1000 from being waterproof, the petrochemical pipeline connection structure 1000 further includes a waterproof coating, which is applied to the outer edge of the connection position between the first joint 11 and the second joint 12. By applying the waterproof coating to the outer edge of the connection position between the first joint 11 and the second joint 12, water vapor is blocked outside the petrochemical pipeline connection structure 1000 as much as possible, thereby reducing the amount of external water vapor infiltrating into the joint structure 1 as much as possible, and ensuring the sealing effect of the petrochemical pipeline connection structure 1000. Optionally, the amount of water vapor infiltrating into the outer wall of the pipeline can also be reduced by applying the waterproof coating to the outer edges of the first joint 11 and the second joint 12 and the outer wall of the pipeline respectively.
[0038] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A petrochemical pipeline connection structure, characterized in that: include: A joint structure, the joint structure comprising a first joint, a second joint and a first sealing ring, the first joint and the second joint are respectively used to be sleeved on the butt joint of the first pipe and the second pipe, the first joint and the second joint are connected by bolts in the axial direction of the pipe, the inner end of the first sealing ring is clamped between the two end surfaces of the first pipe and the second pipe facing each other, the first joint and the second joint clamp the outer end of the first sealing ring, and the outer end of the first sealing ring faces the pipe and abuts against the outer side walls of the first pipe and the second pipe; The clamp comprises a first clamping portion and a second clamping portion, wherein the first clamping portion and the second clamping portion are respectively arranged at the outer edge of the joint structure, and the first clamping portion and the second clamping portion are fixed by bolts to clamp the joint structure and the first pipe and the second pipe in the radial direction of the pipe.
2. The petrochemical pipeline connection structure according to claim 1, characterized in that: The cross-sectional shape of the first sealing ring is T-shaped.
3. The petrochemical pipeline connection structure according to claim 2, characterized in that: The inner edge of the first sealing ring is flush with the inner edges of the first pipe and the second pipe.
4. The petrochemical pipeline connection structure according to claim 3, characterized in that: The first joint and the second joint are symmetrically arranged at the outer edge of the butt joint, and the first joint and the second joint are respectively in contact with the first sealing ring on one side facing the pipeline.
5. The petrochemical pipeline connection structure according to claim 3, characterized in that: The second joint overlaps the outer edge of the first joint, and the side of the first joint facing away from the second joint abuts against the first sealing ring.
6. The petrochemical pipeline connection structure according to any one of claims 1 to 5, characterized in that: The petrochemical pipeline connection structure also includes a second sealing ring. The first joint and the second joint are respectively formed with sealing grooves near the inner edges of the first pipeline and the second pipeline. The second sealing ring is clamped in one of the sealing grooves.
7. The petrochemical pipeline connection structure according to claim 6, characterized in that: At least two sealing grooves are provided on the first joint and the second joint, and the sealing grooves are arranged at intervals along the extension direction of the pipeline.
8. The petrochemical pipeline connection structure according to claim 7, characterized in that: The first sealing ring includes an inner layer and an outer layer, the outer layer is coated on the outer side of the inner layer, and the inner layer and the outer layer are made of different materials.
9. The petrochemical pipeline connection structure according to claim 8, characterized in that: The outer layer is made of hydrogenated nitrile butadiene rubber, and the inner layer is made of EPDM rubber.
10. The petrochemical pipeline connection structure according to claim 9, characterized in that: The petrochemical pipeline connection structure also includes a waterproof coating, which is coated on the outer edge of the connection position between the first joint and the second joint.