CN210319013U - Gas pipeline compensator - Google Patents
Gas pipeline compensator Download PDFInfo
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- CN210319013U CN210319013U CN201820391870.XU CN201820391870U CN210319013U CN 210319013 U CN210319013 U CN 210319013U CN 201820391870 U CN201820391870 U CN 201820391870U CN 210319013 U CN210319013 U CN 210319013U
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- pipe
- tube
- outer sleeve
- compensator
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Abstract
The utility model discloses a gas pipeline compensator, including outer tube, inner tube and the flexible pipe of elasticity, inner tube one end stretches into in the outer tube, and pipe one end including the outer tube cover is established, and sliding fit connects between inner tube and the outer tube, and pipe other one end including the flexible pipe cover is established, flexible pipe one end of elasticity and outer tube pipe end welded connection, on the pipe wall including the flexible pipe other end welding of elasticity. The compensator has the advantages that two ends of the elastic extension tube are directly connected with the outer sleeve and the inner guide tube respectively, the structure is simple, the elastic extension tube is guided by the sliding fit between the outer sleeve and the inner guide tube, and the problem of instability of the compensator in the action process can be effectively solved; and has the characteristics of convenient installation and operation and large compensation amount.
Description
Technical Field
The utility model relates to a gas pipeline technical field, in particular to gas pipeline compensator.
Background
In order to prevent the pipeline from deforming or breaking due to thermal elongation caused by temperature change or temperature stress, a compensator is often arranged on the pipeline for compensating the thermal elongation of the pipeline so as to reduce the stress of the pipeline wall. The existing compensator is generally composed of a corrugated pipe, an end pipe, a support, a flange, a conduit and the like, and the expansion deformation of the corrugated pipe is utilized to absorb the dimensional change of the pipeline, the conduit and the like caused by expansion with heat and contraction with cold and the like, so as to compensate the axial displacement and the transverse displacement of the pipeline and the conduit. The existing compensator is usually small in compensation amount and poor in actual compensation effect, and the corrugated pipe is easy to be unstable although the compensation amount can be increased after the wave number of the corrugated pipe is increased; the compensator is connected with the pipeline through a flange plate, so that the installation is inconvenient; and because the bellows can take place to warp in each different directions in the deformation process and lead to influencing its actual compensation volume, for guaranteeing that the bellows warp at fixed direction in the deformation process, usually need set up guide structure on the bellows, lead to the compensator structure complicacy.
Chinese utility model patent CN201723900U discloses a corrugated pipe expansion joint with large compensation capacity, which comprises an outer pipe, an inner pipe and a corrugated pipe, wherein one end of the outer pipe is sleeved at one end of the inner pipe, the outer pipe comprises an outer sleeve and a structural outer sleeve, the outer sleeve and the structural outer sleeve are welded with each other, and a reinforcing pipe or a reinforcing plate is arranged at the welding position; the corrugated pipe is sleeved on the inner pipe, one end of the corrugated pipe is inserted into the structural outer sleeve, the other end of the corrugated pipe is sleeved and welded on the inner pipe, and the welding position is provided with a reinforcing ring and a rib plate or a reinforcing sleeve. The expansion joint has the advantages that the outer pipe and the inner pipe of the expansion joint form a guide sliding pair through sliding to guide the deformation of the corrugated pipe, but the integral structure is complex, particularly the connecting structure between the corrugated pipe and the pipeline is complex, so that the integral processing and forming process of the expansion joint is complex, and the manufacturing and processing are inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the above-mentioned technical problem who exists among the prior art, provide a simple structure, compensation volume are big, installation convenient operation's gas pipeline compensator.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a gas pipeline compensator, includes outer tube, inner tube and the flexible pipe of elasticity, inner tube one end stretches into in the outer tube, and inner tube one end is established including the outer tube cover, and sliding fit connects between inner tube and the outer tube, and the other one end of inner tube is established to the flexible pipe cover of elasticity, flexible pipe one end and outer tube pipe end welded connection, the flexible pipe other end of elasticity welds on the inner tube pipe wall.
In the above technical solution, further, an annular protrusion is provided at a connection position of the inner conduit and the elastic extension tube, and an end of the elastic extension tube is welded to the annular protrusion.
In the above technical solution, further, the annular protrusion and the inner conduit are of an integrally molded structure.
In the above technical scheme, further, the outer diameter of the annular protrusion is the same as the inner diameter of the tube end of the elastic extension tube, and the tube end of the elastic extension tube is welded at the wave crest of the annular protrusion.
In the above technical scheme, further, the upper end of the outer sleeve is connected with a connecting pipe, and one end of the connecting pipe is welded with the end of the outer sleeve after flaring treatment.
In the above technical solution, further, the elastic extension tube is a metal corrugated tube.
The utility model discloses the beneficial effect who has:
1) the compensator has the advantages that two ends of the elastic extension tube are directly connected with the outer sleeve and the inner guide tube respectively, the structure is simple, the elastic extension tube is guided by the sliding fit between the outer sleeve and the inner guide tube, and the problem of instability of the compensator in the action process can be effectively solved;
2) the two ends of the compensator can be directly connected with a gas pipeline, so that the installation and the operation are convenient;
3) the compensator has large compensation amount, can meet the construction requirement of installing one compensator in every 30 meters of a gas pipeline, and can save the construction cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. outer tube, 2, inner tube, 201, annular protrusion, 3, elastic expansion tube, 4, connecting pipe.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the gas pipeline compensator in this embodiment includes an outer sleeve 1, an inner conduit 2 and an elastic telescopic tube 3, wherein one end of the inner conduit 2 extends into the outer sleeve 1, the outer sleeve 1 is sleeved at one end of the inner conduit 2, the inner conduit 2 is connected with the outer sleeve 1 in a sliding fit manner, the elastic telescopic tube 3 is sleeved at the other end of the inner conduit 2, one end of the elastic telescopic tube 3 is welded to a pipe end of the outer sleeve 1, the other end of the elastic telescopic tube 3 is welded to a pipe wall of the inner conduit 2, and a closed cavity structure is formed among the outer sleeve, the inner conduit and the elastic telescopic. In this embodiment, the elastic expansion tube 3 is a metal corrugated tube.
The upper end of the outer sleeve 1 is connected with a connecting pipe 4, and one end of the connecting pipe 4 is welded with the pipe end of the outer sleeve 1 after flaring treatment.
The two ends of the compensator are connected with a gas pipeline through a threaded fitting or other connecting interfaces. When the gas pipeline expands with heat and contracts with cold, the deformation of the gas pipeline is transmitted to the compensator; at the moment, relative displacement occurs between the inner conduit and the outer sleeve, and the deformation is absorbed by the corrugated pipe connected between the inner conduit and the outer sleeve, so that the corrugated pipe plays a role in deformation compensation for the gas pipeline, and the gas pipeline is ensured not to leak gas due to expansion with heat and contraction with cold. The gas medium enters the closed cavity of the compensator through the inlet of the compensator, the inner guide pipe plays a role in guiding the gas medium, and simultaneously plays an axial guiding role in the corrugated pipe through the sliding fit between the inner guide pipe and the outer sleeve pipe, so that the corrugated pipe is ensured to be compensated in the complete longitudinal direction when compensating the gas pipeline, and the compensation amount of the compensator is ensured.
As shown in FIG. 1, an annular protrusion 201 is provided on the inner tube 2 at the connection with the elastic extension tube, and the end of the elastic extension tube 3 is welded on the annular protrusion 201. The connection mode can facilitate the welding connection operation between the elastic extension tube and the inner guide tube, ensure the welding seam strength and the welding integral performance, and prevent the performance of the compensator from being influenced by the failure of the connection part between the inner guide tube and the corrugated tube; meanwhile, the connecting mode is simple in structure, and an additional connecting structure is not required to be arranged between the inner conduit and the corrugated pipe.
In this embodiment, the annular protrusion 201 and the inner conduit 2 are integrally formed; an annular protrusion as shown in fig. 1 is formed on the inner catheter by a molding process. Preferably, the outer diameter of the annular bulge 201 is the same as the inner diameter of the pipe end of the elastic telescopic pipe 3, and the pipe end of the elastic telescopic pipe 3 is welded at the wave crest of the annular bulge 201; so as to facilitate the welding operation between the corrugated pipe and the annular projection.
The present invention is considered to be illustrative and not restrictive, and on the basis of the present invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative efforts according to the technical content disclosed, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (4)
1. Gas pipeline compensator, its characterized in that: the device comprises an outer sleeve, an inner catheter and an elastic telescopic tube, wherein one end of the inner catheter extends into the outer sleeve, the outer sleeve is sleeved at one end of the inner catheter, the inner catheter is connected with the outer sleeve in a sliding fit manner, the elastic telescopic tube is sleeved at the other end of the inner catheter, one end of the elastic telescopic tube is welded with the end of the outer sleeve, and the other end of the elastic telescopic tube is welded on the wall of the inner catheter; an annular bulge is arranged at the joint of the inner conduit and the elastic extension tube, the annular bulge is positioned between the two ends of the inner conduit, and the end part of the elastic extension tube is welded on the annular bulge; the outer diameter of the annular bulge is the same as the inner diameter of the pipe end of the elastic extension pipe, and the pipe end of the elastic extension pipe is welded at the wave crest of the annular bulge.
2. The gas duct compensator of claim 1, wherein: the annular bulge and the inner conduit are of an integrally formed structure.
3. The gas duct compensator of claim 1, wherein: the upper end of the outer sleeve is connected with a connecting pipe, and one end of the connecting pipe is welded with the end of the outer sleeve after flaring treatment.
4. The gas duct compensator of claim 1, wherein: the elastic telescopic pipe is a metal corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391870.XU CN210319013U (en) | 2018-03-22 | 2018-03-22 | Gas pipeline compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391870.XU CN210319013U (en) | 2018-03-22 | 2018-03-22 | Gas pipeline compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210319013U true CN210319013U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820391870.XU Active CN210319013U (en) | 2018-03-22 | 2018-03-22 | Gas pipeline compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210319013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853410A (en) * | 2020-08-24 | 2020-10-30 | 成都众远管业有限公司 | Compensator manufactured by adding glue and pressing after welding and method |
| CN111975238A (en) * | 2020-08-24 | 2020-11-24 | 成都众远管业有限公司 | Compensator ring pressure welding method |
-
2018
- 2018-03-22 CN CN201820391870.XU patent/CN210319013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853410A (en) * | 2020-08-24 | 2020-10-30 | 成都众远管业有限公司 | Compensator manufactured by adding glue and pressing after welding and method |
| CN111975238A (en) * | 2020-08-24 | 2020-11-24 | 成都众远管业有限公司 | Compensator ring pressure welding method |
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