CN215891462U - Natural gas conveying pipeline joint - Google Patents
Natural gas conveying pipeline joint Download PDFInfo
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- CN215891462U CN215891462U CN202122162163.8U CN202122162163U CN215891462U CN 215891462 U CN215891462 U CN 215891462U CN 202122162163 U CN202122162163 U CN 202122162163U CN 215891462 U CN215891462 U CN 215891462U
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Abstract
The utility model relates to the technical field of pipeline connection, in particular to a natural gas conveying pipeline joint which is used for connecting two natural gas pipelines and is arranged at a joint between a first pipeline and a second pipeline, wherein annular grooves are respectively formed in the circumferences of the first pipeline and the second pipeline, which are close to a connecting end, the natural gas conveying pipeline joint comprises a sealing structure, a sealing sleeve is fixedly connected to the end part of a pipe orifice of the first pipeline, a sealing ring is inserted in the sealing sleeve and is fixedly connected to the pipe orifice end of the second pipeline, the sealing structure comprises rubber pads, insert rings and a sliding sleeve, the two rubber pads are respectively clamped in the annular grooves on the first pipeline and the second pipeline, a vertical plate of each insert ring is inserted in the annular groove formed in the first pipeline, and a vertical plate of each sliding sleeve is inserted in the annular groove formed in the second pipeline; the natural gas conveying pipeline joint provided by the utility model can avoid rainwater erosion, can reduce the amplitude, and has the advantages of gas leakage alarm function and long service life.
Description
Technical Field
The utility model relates to the technical field of pipeline connection, in particular to a natural gas conveying pipeline joint.
Background
With the progress of the western-east gas transportation plan of China, a large amount of natural gas is transported from the west to the east, and in the process of transporting the natural gas, a safe and reliable pipeline is indispensable. The common natural gas pipeline is formed by welding seamless steel pipes, and is connected in a welding mode mainly because the welding cost is low, the welding is safe and reliable, but the welded natural gas pipeline has obvious defects, such as the phenomenon of stress concentration, most importantly, when the welded natural gas pipeline is subjected to external pressure or vibration, the welded part of the whole pipeline is easily damaged, and the service life of the pipeline is influenced, so that not all pipelines of the natural gas pipeline are welded in actual construction, and a pipeline joint is usually arranged in a certain distance for overhauling and eliminating amplitude.
However, the joint is more prone to gas leakage than a welded joint, and when gas leakage occurs in an existing pipeline joint, detection needs to be performed by using instruments or other objects, which is very inconvenient, and the existing pipeline joint is often corroded by rainwater, is difficult to disassemble after being used for a long time, and is very prone to leakage.
Therefore, there is a need to provide a new natural gas pipeline joint to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a natural gas conveying pipeline joint which is used for connecting two natural gas pipelines and is arranged at the joint between a first pipeline and a second pipeline, wherein annular grooves are respectively formed in the circumferences of the first pipeline and the second pipeline, which are close to a connecting end, the natural gas conveying pipeline joint comprises a sealing structure, a sealing sleeve is fixedly connected to the end part of a pipe orifice of the first pipeline, a sealing ring is inserted in the sealing sleeve and is fixedly connected to the end part of the pipe orifice of the second pipeline, the sealing structure comprises two rubber pads, an inserting ring and a sliding sleeve, the two rubber pads are respectively clamped in the annular grooves on the first pipeline and the second pipeline, a vertical plate of the inserting ring is inserted in the annular groove formed in the first pipeline, and a vertical plate of the sliding sleeve is inserted in the annular groove formed in the second pipeline; the natural gas conveying pipeline joint provided by the utility model can avoid rainwater erosion, can reduce the amplitude, and has the advantages of gas leakage alarm function and long service life.
The utility model solves the technical problem, and adopts the technical scheme that:
a natural gas conveying pipeline joint is used for connecting two natural gas pipelines and is arranged at a joint between a first pipeline and a second pipeline, annular grooves are respectively formed in the circumferences, close to a connecting end, of the first pipeline and the second pipeline, the annular grooves are formed in the circumferences, close to the connecting end, of the first pipeline and the second pipeline, the natural gas conveying pipeline joint comprises a sealing structure, the sealing structure is erected at the joint of the first pipeline and the second pipeline, a sealing sleeve is fixedly connected to the end portion of a pipe orifice of the first pipeline, a sealing ring is inserted into the sealing sleeve and is in sliding connection with an inner cavity of the sealing sleeve, and the sealing ring is fixedly connected to the end portion of the pipe orifice of the second pipeline;
seal structure includes the rubber pad, insert ring sum sliding sleeve, the rubber pad is equipped with two altogether, two rubber pads are blocked respectively and are located in the ring channel on pipeline one and the pipeline two, the cross section of inserting ring sum sliding sleeve all is "L" shape structure, insert ring sum sliding sleeve and all include riser and ring plate respectively, the internal diameter of the ring plate of sliding sleeve is greater than the external diameter of the ring plate of inserting the ring and both sliding connection, the riser of inserting the ring is inserted and is located in the ring channel of seting up on the pipeline one and with ring channel sliding connection, the riser of sliding sleeve insert locate in the ring channel of seting up on the pipeline two and with ring channel sliding connection.
Furthermore, the insert ring and the sliding sleeve are both of non-closed ring structures, an open notch is reserved in the circumferential direction of the insert ring and the sliding sleeve, and the diameters of inner circles on vertical plates of the insert ring and the sliding sleeve are smaller than the diameters of outer circles of the first pipeline and the second pipeline and equal to the outer diameter of the groove bottom of the annular groove.
Further, seal structure still includes mounting panel, a plurality of threaded rod, flange board and a plurality of nut, mounting panel fixed connection is on inserting the ring, and flange board fixed connection is on the sliding sleeve, and establishes along the circumferencial direction on the mounting panel and install a plurality of threaded rod, has seted up a plurality of via holes corresponding with the threaded rod on the flange board, and every threaded rod passes behind the flange board and nut threaded connection.
Preferably, be equipped with a plurality of groups of shock-absorbing structure on seal structure, shock-absorbing structure includes extension spring, inserted bar and gag lever post, the one end fixed mounting of extension spring is on the mounting panel, and the other end fixed connection inserted bar of extension spring, the inserted bar passes the flange board and extends the outer terminal surface of flange board, stretches out the pole portion of the outer terminal surface of flange board at the inserted bar and offers threaded hole, inserts threaded connection's gag lever post in the threaded hole.
More preferably, the sealing structure is further provided with a covering structure, the covering structure includes a threaded sleeve and a second sliding groove, the outer end surface of the insert ring is provided with a first sliding groove, the outer end surface of the sliding sleeve is provided with a second sliding groove, the lower end of the threaded sleeve is inserted into the first sliding groove formed in the insert ring and is slidably connected with the first sliding groove, the threaded sleeve is inserted with a threaded ring in threaded connection, and the lower end of the threaded ring is inserted into the second sliding groove formed in the sliding sleeve and is slidably connected with the second sliding groove.
Furthermore, a whistle cylinder is fixedly arranged on the outer end face of the insert ring and penetrates through the plate wall of the threaded sleeve and extends out of the threaded sleeve.
Furthermore, a sealing ring is arranged at the sliding connection part of the insert ring and the sliding sleeve, and the sealing ring is arranged on the outer periphery of the insert ring or the inner periphery of the sliding sleeve.
Compared with the prior art, the natural gas conveying pipeline joint provided by the utility model has the following beneficial effects:
1. when the natural gas conveying pipeline joint is used, the sealing structure tightly supports the sealing ring and the sealing sleeve to avoid gas leakage, the rubber gasket in the sealing structure can avoid gas leakage from the annular groove, and the inserting ring and the sliding sleeve can be tightly supported to avoid abrasion caused by rotation;
2. when the first pipeline and the second pipeline are subjected to external tension, the vibration absorption structure can reduce the vibration amplitude, reduce the possibility of mutual staggering of the first pipeline and the second pipeline and prolong the service life of the joint;
3. the covering structure can prevent part of parts and the damping structure in the sealing structure from being corroded by rainwater, so that the service life is prolonged, and the problem that the parts cannot be disassembled after long-time use is avoided;
4. when the fuel gas leaks, most of the fuel gas passes through the whistle cylinder to make a sound, so that the fuel gas leakage can be found without using an instrument, and the whistle cylinder is simple and convenient.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of a natural gas pipeline joint according to the present invention;
FIG. 2 is a schematic cross-sectional view of the structure shown in FIG. 1;
FIG. 3 is an enlarged view of the structure shown at A in FIG. 2;
FIG. 4 is an enlarged view of the structure shown at B in FIG. 2;
fig. 5 is a schematic structural view of the sealing structure shown in fig. 1.
Reference numbers in the figures: 1. a first pipeline; 2. a second pipeline; 3. an annular groove; 4. a sealing structure; 41. a rubber pad; 42. inserting a ring; 43. a sliding sleeve; 44. mounting a plate; 45. a threaded rod; 46. a flange plate; 47. a nut; 5. a shock-absorbing structure; 51. a tension spring; 52. inserting a rod; 53. a threaded hole; 54. a limiting rod; 6. a cover structure; 61. a threaded sleeve; 62. a first chute; 63. a threaded ring; 64. a second chute; 7. sealing sleeves; 8. a seal ring; 9. a whistle barrel.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
The natural gas conveying pipeline joint is arranged at the joint of two natural gas pipelines and used for connecting the two natural gas pipelines.
Referring to fig. 1 to 5, the natural gas transportation pipeline joint provided by the present invention is used for connecting two natural gas pipelines, and is specifically arranged between a pipeline 1 and a pipeline 2, annular grooves 3 are respectively formed on circumferences of the pipeline 1 and the pipeline 2 near a connection end, and the natural gas transportation pipeline joint includes a sealing structure 4.
The two annular grooves 3 are respectively arranged on the first pipeline 1 and the second pipeline 2, a sealing sleeve 7 is welded at the end part of the pipe orifice of the first pipeline 1, a sealing ring 8 is inserted in the sealing sleeve 7, the sealing ring 8 is in sliding connection with the inner cavity of the sealing sleeve 7, and the sealing ring 8 is welded at the end part of the pipe orifice of the second pipeline 2.
In order to facilitate the vertical plates of the insert ring 42 and the sliding sleeve 43 to be smoothly inserted into the annular groove 3, the insert ring 42 and the sliding sleeve 43 can be made of elastic materials, or the insert ring 42 and the sliding sleeve 43 adopt non-closed ring structures, namely, a gap is reserved in the circumferential direction of the insert ring 42 and the sliding sleeve 43, so that the insert ring 42 and the sliding sleeve 43 can have certain elastic expansibility. The diameters of the inner circles on the vertical plates of the insert ring 42 and the sliding sleeve 43 are smaller than the diameters of the outer circles of the first pipeline 1 and the second pipeline 2 and equal to the outer diameter of the groove bottom of the annular groove 3.
It should be noted that: during the installation, inject sealing ring 8 in seal cover 7 to make threaded rod 45 pass the corresponding via hole of seting up on the flange plate 46, twist nut 47, make sealing ring 8 support on the inside wall of seal cover 7, let the unable leakage of gas, rubber pad 4 can support ring 42 and sliding sleeve 43 tightly, avoids it to rotate because of taking place and abrade.
Referring to fig. 2 and 5, a plurality of sets of damping structures 5 are further disposed on the sealing structure 4, each damping structure 5 includes a tension spring 51, an insertion rod 52, a threaded hole 53 and a limiting rod 54, one end of each tension spring 51 is fixedly mounted on the mounting plate 44, the other end of each tension spring 51 is fixedly connected with the insertion rod 52, the insertion rod 52 penetrates through the flange plate 46 and extends out of the outer end face of the flange plate 46, the threaded hole 53 is disposed in a rod portion of the insertion rod 52 extending out of the outer end face of the flange plate 46, and the limiting rod 54 in threaded connection is inserted into the threaded hole 53.
It should be noted that: when the first pipeline 1 and the second pipeline 2 are subjected to external tension, the tension spring 51 extends to generate a reaction force of inward tension and compression to resist the tension on the pipelines, so that the amplitude is reduced, the possibility that the first pipeline 1 and the second pipeline 2 are mutually staggered is reduced, the service life of a joint is prolonged, and the sealing performance of the joint of the first pipeline 1 and the second pipeline 2 can be enhanced.
Referring to fig. 2, 3 and 4, a covering structure 6 is further provided on the sealing structure 4, the covering structure 6 includes a threaded sleeve 61 and a second sliding groove 64, a first sliding groove 62 is provided on the outer end surface of the insert ring 42, a second sliding groove 64 is provided on the outer end surface of the sliding sleeve 43, the lower end of the threaded sleeve 61 is inserted into the first sliding groove 62 provided on the insert ring 42 and slidably connected with the first sliding groove 62, a threaded ring 63 for threaded connection is inserted into the threaded sleeve 61, and the other end of the threaded ring 63 is inserted into the second sliding groove 64 provided on the sliding sleeve 43 and slidably connected with the second sliding groove 64.
It should be noted that: the thread bush 61 and the thread ring 63 cover part of parts in the sealing structure 4 and the damping structure 5, so that erosion of rainwater is avoided, the service life is prolonged, and the problem that the sealing structure cannot be disassembled after long-time use is avoided.
Referring to fig. 2, a whistle cylinder 9 is fixedly mounted on the outer end face of the insert ring 42, the whistle cylinder 9 penetrates through the plate wall of the threaded sleeve 61 and extends out of the threaded sleeve 61, when gas leaks, most of the gas penetrates through the whistle cylinder 9 to make a sound, and the gas leakage can be found without using an instrument, so that the whistle device is simple and convenient.
As a further proposal, a sealing ring is arranged at the sliding connection part of the insert ring 42 and the sliding sleeve 43, the sealing ring is made of rubber or plastic material and is arranged at the outer periphery of the insert ring 42 or the inner periphery of the sliding sleeve 43, when the natural gas leaks from the connection part of the sealing ring 8 and the sealing sleeve 7, the sealing ring arranged at the sliding connection part of the insert ring 42 and the sliding sleeve 43 can prevent the natural gas from leaking outwards.
The working principle of the natural gas conveying pipeline joint provided by the utility model is as follows:
during installation, inject sealing ring 8 into seal cover 7, and make threaded rod 45 pass flange plate 46, twist nut 47, make sealing ring 8 support on the inside wall of seal cover 7, make the gas unable to leak, wherein, rubber pad 41 can avoid the gas to leak from ring channel 3, can also support ring 42 and sliding sleeve 43 tightly, avoid it because of taking place to rotate wearing and tearing, when pipeline one 1 and pipeline two 2 receive outside potential force, extension spring 51 extends, produce a reaction force and resist the pulling force, reduce the amplitude, reduce the pipeline one 1 and the mutual staggered possibility of pipeline two 2, increase and connect life and can promote the leakproofness, thread bush 61 and thread ring 63 cover partial part in seal structure 4 and shock-absorbing structure 5, the erosion of rainwater has been avoided, the service life is prolonged, the problem of unable dismantlement after avoiding long-time use.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a natural gas conveying pipeline connects for connect two natural gas line, install the junction between pipeline (1) and pipeline two (2), seted up ring channel (3), its characterized in that on the circumference that pipeline (1) and pipeline two (2) are close to the link respectively: the pipeline sealing device comprises a sealing structure (4), wherein the sealing structure (4) is erected at the joint of a first pipeline (1) and a second pipeline (2), a sealing sleeve (7) is fixedly connected to the end part of a pipe orifice of the first pipeline (1), a sealing ring (8) is inserted into the sealing sleeve (7), the sealing ring (8) is in sliding connection with an inner cavity of the sealing sleeve (7), and the sealing ring (8) is fixedly connected to the end part of the pipe orifice of the second pipeline (2);
seal structure (4) are including rubber pad (41), insert ring (42) and sliding sleeve (43), rubber pad (41) are equipped with two altogether, two rubber pads (41) are blocked respectively in ring channel (3) on pipeline (1) and pipeline two (2), the cross section of inserting ring (42) and sliding sleeve (43) all is "L" shape structure, insert ring (42) and sliding sleeve (43) and all include riser and ring plate respectively, the internal diameter of the ring plate of sliding sleeve (43) is greater than the external diameter and both sliding connection of the ring plate of inserting ring (42), the riser of inserting ring (42) is inserted and is located in ring channel (3) of seting up on pipeline (1) and with ring channel (3) sliding connection, the riser of sliding sleeve (43) is inserted and is located in ring channel (3) of seting up on pipeline two (2) and with ring channel (3) sliding connection.
2. The natural gas delivery conduit joint of claim 1, wherein: the inserting ring (42) and the sliding sleeve (43) are both of non-closed ring structures, an open gap is reserved in the circumferential direction of the inserting ring (42) and the sliding sleeve (43), and the inner circle diameters of vertical plates of the inserting ring (42) and the sliding sleeve (43) are smaller than the outer circle diameters of the first pipeline (1) and the second pipeline (2) and equal to the outer diameter of the groove bottom of the annular groove (3).
3. The natural gas delivery conduit joint of claim 1, wherein: seal structure (4) still include mounting panel (44), a plurality of threaded rod (45), flange board (46) and a plurality of nut (47), mounting panel (44) fixed connection is on inserting ring (42), flange board (46) fixed connection is on sliding sleeve (43), and establishes along the circumferencial direction on mounting panel (44) and install a plurality of threaded rod (45), has seted up a plurality of via holes corresponding with threaded rod (45) on flange board (46), passes behind flange board (46) every threaded rod (45) and nut (47) threaded connection.
4. The natural gas delivery conduit joint of claim 3, wherein: be equipped with a plurality of groups shock-absorbing structure (5) on seal structure (4), shock-absorbing structure (5) are including extension spring (51), inserted bar (52) and gag lever post (54), the one end fixed mounting of extension spring (51) is on mounting panel (44), and the other end fixed connection inserted bar (52) of extension spring (51), inserted bar (52) pass flange plate (46) and extend the outer terminal surface of flange plate (46), stretch out the pole portion of flange plate (46) outer terminal surface at inserted bar (52) and offered threaded hole (53), insert gag lever post (54) that is equipped with threaded connection in threaded hole (53).
5. The natural gas delivery conduit joint of claim 1, wherein: the sealing structure (4) is further provided with a covering structure (6), the covering structure (6) comprises a threaded sleeve (61) and a second sliding groove (64), a first sliding groove (62) is formed in the outer end face of the inserting ring (42), a second sliding groove (64) is formed in the outer end face of the sliding sleeve (43), the lower end of the threaded sleeve (61) is inserted into the first sliding groove (62) formed in the inserting ring (42) and is in sliding connection with the first sliding groove (62), a threaded ring (63) in threaded connection is inserted into the threaded sleeve (61), and the lower end of the threaded ring (63) is inserted into the second sliding groove (64) formed in the sliding sleeve (43) and is in sliding connection with the second sliding groove (64).
6. The natural gas delivery conduit joint of claim 5, wherein: a whistle cylinder (9) is fixedly arranged on the outer end face of the insert ring (42), and the whistle cylinder (9) penetrates through the plate wall of the threaded sleeve (61) and extends out of the threaded sleeve (61).
7. The natural gas delivery conduit joint of claim 1, wherein: a sealing ring is arranged at the sliding connection part of the insert ring (42) and the sliding sleeve (43), and the sealing ring is arranged on the outer periphery of the insert ring (42) or the inner periphery of the sliding sleeve (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122162163.8U CN215891462U (en) | 2021-09-08 | 2021-09-08 | Natural gas conveying pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122162163.8U CN215891462U (en) | 2021-09-08 | 2021-09-08 | Natural gas conveying pipeline joint |
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| Publication Number | Publication Date |
|---|---|
| CN215891462U true CN215891462U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122162163.8U Active CN215891462U (en) | 2021-09-08 | 2021-09-08 | Natural gas conveying pipeline joint |
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| CN (1) | CN215891462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929648A (en) * | 2022-12-27 | 2023-04-07 | 无锡斯普流体设备有限公司 | Anti-corrosion chemical pump |
-
2021
- 2021-09-08 CN CN202122162163.8U patent/CN215891462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929648A (en) * | 2022-12-27 | 2023-04-07 | 无锡斯普流体设备有限公司 | Anti-corrosion chemical pump |
| CN115929648B (en) * | 2022-12-27 | 2023-11-14 | 无锡斯普流体设备有限公司 | Corrosion-proof chemical pump |
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