Corrugated compensator for direct buried pipe and direct buried pipe
By designing a bidirectional direct-buried corrugated compensator, the deformation of the pipeline is limited by the limiting ring plate and the flat ring structure, which solves the problem of the limitation of the unidirectional compensator and achieves a thermal pipeline compensation effect with a larger compensation amount and lower energy consumption.
Patent Information
- Application Number
- CN202423251248.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing unidirectional direct-buried metal corrugated compensators are affected by factors such as soil resistance and pipeline stiffness during use, resulting in limited compensation effect. They may also fail due to expansion exceeding the compensator's stroke, thus failing to effectively protect the fixed support.
Design a bidirectional direct-buried corrugated compensator, including a cylinder, a limiting ring plate and a flat ring structure, to limit the deformation of the pipeline in the tensile and compressive directions, and set fixed supports at both ends of the pipeline to ensure that the compensator works within the effective range.
It achieves bidirectional compensation, reduces soil resistance in pipelines, protects compensators from excessive stretching or compression, improves the compensation range and bending resistance, reduces energy consumption and construction investment, adapts to high water level environments, and extends the service life of pipelines.
Smart Images
Figure CN223595398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heat pipeline, specifically relates to a corrugated compensator for direct -buried pipeline and direct -buried pipeline. BACKGROUND
[0002] The compensator is directly connected with the pipeline and is buried underground for compensation when used in the heat pipeline, and is used for absorbing the axial displacement of the pipeline.
[0003] In the related art, the compensator is mostly one-way direct-buried metal corrugated compensator, and the one-way direct-buried metal corrugated compensator has fixed supports at both ends after being buried underground with the pipeline. The one-way direct-buried compensator can only compensate in one direction and is generally placed at one end close to the fixed support. Since it is one-way compensation, the resistance of the soil is much greater than the thrust of the pipeline, which limits the compensation effect to a certain extent, and the one-way direct-buried compensator is also affected by the pipeline sinking and the stiffness force in many aspects, so that the pressure and thrust on the fixed support are very large.
[0004] At the same time, the one-way direct-buried metal corrugated compensator does not set a limit and is one-way compensation in work, so that the pipeline is greatly affected by the resistance of the soil, the stiffness force of the pipeline and other reasons in the pipeline thermal expansion process. Moreover, the compensation range of the one-way compensator is also limited. If there is no limit, the compensator may be pulled out of the compensator due to the expansion amount exceeding the compensator stroke, and the compensator may fail. SUMMARY
[0005] The utility model aims at providing a corrugated compensator for direct-buried pipeline to solve the problems of the existing one-way direct-buried metal corrugated compensator in use.
[0006] Therefore, an embodiment of the utility model provides a corrugated compensator for direct-buried pipeline.
[0007] Therefore, another embodiment of the utility model provides a direct-buried pipeline.
[0008] The utility model discloses a bellows compensator for direct -buried pipeline, the direct -buried pipeline at least includes first long pipe and second long pipe, the bellows compensator includes outer tube, two flat rings and two bellows, the outer tube includes cylinder, intermediate limit ring plate and two end limit ring plate, the cylinder is set on the first long pipe and the second long pipe's joint, one end limit ring plate is set on the first long pipe, another end limit ring plate is set on the second long pipe, and the intermediate limit ring plate is located between the first long pipe and the second long pipe, two flat rings are set on the end of the first long pipe and the second long pipe respectively, and two flat rings are located on the both sides of intermediate limit ring plate, and two bellows are set on the end of the first long pipe and the second long pipe respectively, and two bellows are located between end limit ring plate and one flat ring respectively.
[0009] According to the bellows compensator of the utility model, the cylinder is rigid structure, and the setting of the cylinder and the two end limit ring plates effectively limits the deformation in the stretching direction between the first long pipe and the second long pipe, and the setting of the intermediate limit ring plate and the two flat rings effectively limits the deformation in the extrusion direction between the first long pipe and the second long pipe.
[0010] In some embodiments, the bellows compensator further includes four support rings, the four support rings are respectively arranged on the two end limit ring plates and the two flat rings, and the two ends of the bellows are respectively sleeved on the two support rings.
[0011] In some embodiments, the bellows compensator further includes two limit rings, the two limit rings are respectively sleeved on the first long pipe and the second long pipe, and the limit rings are arranged adjacent to the inner side of the end limit ring plate.
[0012] In some embodiments, the bellows compensator further includes two skin rings, the two skin rings are respectively sleeved on the first long pipe and the second long pipe, the two end limit ring plates are correspondingly sleeved on the two skin rings, and one side of the skin ring abuts on the limit ring.
[0013] In some embodiments, the bellows compensator further includes two sealing mechanisms, the two sealing mechanisms are respectively arranged on the two skin rings.
[0014] In some embodiments, the bellows compensator further includes two earth shields, the two earth shields are respectively sleeved on the first long pipe and the second long pipe, one side of the earth shield abuts on the outer side of the end limit ring plate, and the earth shield internally wraps the sealing mechanism and the skin ring.
[0015] In some embodiments, the intermediate limiting ring plate and the two end limiting ring plates are welded on the cylinder.
[0016] In some embodiments, the inner diameter surface of the intermediate limiting ring plate is flush with the tube wall of the first long tube and the second long tube.
[0017] The direct-buried pipeline according to the embodiments of the present application comprises two fixed supports, a first long tube, a second long tube and a corrugated compensator, the two fixed supports are arranged oppositely underground, the first long tube is arranged underground, one end of the first long tube is connected with one of the fixed supports and extends towards the other fixed support, the second long tube is arranged underground, one end of the second long tube is connected with the other fixed support and extends towards the first long tube, the corrugated compensator is the corrugated compensator according to any one of the above embodiments, and the corrugated compensator is arranged at the joint of the first long tube and the second long tube.
[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, but not limiting the present disclosure. Other features and aspects of the present disclosure will be more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0020] Figure 1 is a schematic view of a corrugated compensator according to an embodiment of the present application.
[0021] Figure 2 is a schematic view of a direct-buried pipeline according to an embodiment of the present application.
[0022] Reference signs:
[0023] Corrugated compensator 100, outer cylinder 10, cylinder 11, intermediate limiting ring plate 12, end limiting ring plate 13, flat ring 20, corrugated tube 30, support ring 31, limiting ring 40, skin ring 50, sealing mechanism 51, soil shield 52.
[0024] Direct-buried pipeline 200, first long tube 201, second long tube 202, fixed support 203. DETAILED DESCRIPTION
[0025] The technical solutions of the utility model will be described clearly and completely in combination with specific embodiments below, but those skilled in the art should understand that the embodiments described below are only used for illustrating the utility model and should not be regarded as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0026] As shown in Figure 1 The corrugated compensator 100 for the direct-buried pipeline 200 according to the embodiments of the utility model comprises an outer cylinder 10, two flat rings 20 and two corrugated pipes 30.
[0027] The outer cylinder 10 comprises a cylinder body 11, an intermediate limiting ring plate 12 and two end limiting ring plates 13, the cylinder body 11 is sleeved at the joint of the first long pipe 201 and the second long pipe 202, one end limiting ring plate 13 is sleeved on the first long pipe 201, the other end limiting ring plate 13 is sleeved on the second long pipe 202, and the intermediate limiting ring plate 12 is located between the first long pipe 201 and the second long pipe 202.
[0028] The two flat rings 20 are respectively sleeved at the ends of the first long pipe 201 and the second long pipe 202, and the two flat rings 20 are located on the two sides of the intermediate limiting ring plate 12; the two corrugated pipes 30 are respectively sleeved at the ends of the first long pipe 201 and the second long pipe 202, and the two corrugated pipes 30 are respectively located between the end limiting ring plate 13 and one flat ring 20.
[0029] According to the corrugated compensator 100 of the utility model, the cylinder body 11 is a rigid structure, the setting of the cylinder body 11 and the two end limiting ring plates 13 effectively limits the deformation in the stretching direction between the first long pipe 201 and the second long pipe 202, and the setting of the intermediate limiting ring plate 12 and the two flat rings 20 effectively limits the deformation in the extrusion direction between the first long pipe 201 and the second long pipe 202.
[0030] In some embodiments, as shown in Figure 1 The corrugated compensator 100 further comprises four supporting rings 31, the four supporting rings 31 are respectively arranged on the two end limiting ring plates 13 and the two flat rings 20, and the two ends of the corrugated pipe 30 are respectively sleeved on the two supporting rings 31.
[0031] In some embodiments, as shown in Figure 1 The corrugated compensator 100 further comprises two limiting rings 40, the two limiting rings 40 are respectively sleeved on the first long pipe 201 and the second long pipe 202, and the limiting ring 40 is arranged close to the inner side of the end limiting ring plate 13.
[0032] In some embodiments, as shown in Figure 1 The corrugated compensator 100 further comprises two skin rings 50, which are respectively sleeved on the first long pipe 201 and the second long pipe 202, and the two end limiting rings 40 plates 13 are respectively sleeved on the two skin rings 50, and one side of the skin ring 50 abuts against the limiting ring 40.
[0033] In some embodiments, as shown in Figure 1 The corrugated compensator 100 further comprises two sealing mechanisms 51, which are respectively arranged on the two skin rings 50.
[0034] In some embodiments, as shown in Figure 1 The corrugated compensator 100 further comprises two earth shields 52, which are respectively sleeved on the first long pipe 201 and the second long pipe 202, one side of the earth shield 52 abuts against the outer side of the end limiting ring 40 plate 13, and the earth shield 52 wraps the sealing mechanism 51 and the skin ring 50 inside.
[0035] In some embodiments, as shown in Figure 1 The intermediate limiting ring 40 plate 12 and the two end limiting rings 40 plates 13 are welded on the cylinder 11.
[0036] In some embodiments, as shown in Figure 1 The inner diameter surface of the intermediate limiting ring 40 plate 12 is flush with the pipe wall of the first long pipe 201 and the second long pipe 202.
[0037] The corrugated compensator 100 in the utility model can ensure that the compensator works within the effective compensation range, and once the expansion amount of the pipeline exceeds the compensation range of the compensator, the limiting device of the compensator itself will limit its stretching or compression, thereby protecting the safe operation of the compensator.
[0038] The corrugated compensator 100 changes the pipeline compensation from one-way to two-way, and in order to make the two-way direct-buried compensator play a compensation role, fixed supports must be arranged at both ends of the compensator to prevent the pipeline from moving outward and stretching under the influence of internal pressure thrust. In this way, the direct-buried two-way metal corrugated compensator can be placed in the middle position of the two fixed supports, so that the resistance of the pipeline to the soil is greatly reduced.
[0039] As shown in Figure 2As shown, the direct-buried pipeline 200 according to the embodiment of the utility model includes two fixed supports 203, a first long pipe 201, a second long pipe 202 and a corrugated compensator 100, the two fixed supports 203 are oppositely arranged underground; the first long pipe 201 is arranged underground, and one end of the first long pipe 201 is connected with one fixed support 203 and extends towards the other fixed support 203; the second long pipe 202 is arranged underground, and one end of the second long pipe 202 is connected with the other fixed support 203 and extends towards the first long pipe 201; the corrugated compensator 100 is the corrugated compensator 100 of any one of the above embodiments, and the corrugated compensator 100 is arranged at the joint of the first long pipe 201 and the second long pipe 202.
[0040] The corrugated compensator 100 of the utility model has super bending resistance, is not affected by pipeline subsidence, and can realize free expansion compensation under the protection of the outer cylinder. The compensator plays a very important role in the heat pipeline, and the expansion deformation of the pipeline can be absorbed by the compensator. The material of the compensator is carbon steel or stainless steel, and the corrugated pipe part is stainless steel. The compensator is connected with the pipeline and works underground.
[0041] The corrugated compensator 100 of the utility model is mainly used for axial compensation of the heat pipeline, has bending resistance, and is generally placed at the middle position of the two fixed supports to absorb a larger compensation amount. When the compensator works, the pressure thrust generated by the thermal expansion of the pipeline acts on the long pipes at both ends of the compensator, so that compression displacement ΔX' or stretching displacement ΔX' is generated at both ends of the compensator.
[0042] When the corrugated compensator 100 of the utility model is compressed, the two-direction ΔX' displacement is moved from both ends to the middle position, and when the compression reaches a certain degree, the ΔX' displacement of both ends is limited by the middle limiting ring plate 12 and reaches balance, at this time, it is also the maximum compression displacement of the compensator, that is, ΔX'+ΔX'=ΔX. With the limitation of the middle limiting ring plate 12, the displacement of the long pipes at both ends of the compensator caused by the pressure thrust of the pipeline is equal. At this time, the middle limiting ring plate 12 also plays a role of protecting the compensator from being damaged by excessive compression.
[0043] When the corrugated compensator 100 of the utility model is stretched by the thermal expansion of the pipeline, two-direction ΔX' displacement is generated, and when the stretching reaches a certain degree, the ΔX' displacement of both ends is limited by the end limiting ring plate 13 and reaches balance, at this time, it is also the maximum stretching displacement of the compensator, that is, ΔX'+ΔX'=ΔX. With the limitation of the end limiting ring plate 13, the two-side stretching displacement of the long pipes at both ends of the compensator caused by the pressure thrust of the pipeline is equal. At this time, the end limiting ring plate 13 also plays a role of protecting the compensator from being damaged by excessive stretching.
[0044] The corrugated compensator 100 has good wear resistance, is suitable for hot water pipes, steam pipes and the like, and can compensate additional stress caused by temperature difference and mechanical vibration.
[0045] The main advantages of the corrugated compensator 100 of the utility model include:
[0046] 1. The compensator can realize long-distance steam delivery, and compared with the traditional one-way compensation mode, the pressure drop is lower, so that the steam delivery distance can reach 20 kilometers, and the energy consumption is reduced.
[0047] 2. The compensator has long distance and strong compensation capacity, and can save 30% and 25%-30% of construction investment.
[0048] 3. The compensator has small pressure drop, reduced heat loss, and brings huge economic benefits in long-term operation.
[0049] 4. The compensator has super bending resistance, is not affected by pipeline sinking, and can realize free expansion compensation under the protection of the outer cylinder, the guide long pipe and the self-limiting protection.
[0050] 5. Adapt to high water level environment, the compensator can effectively resist corrosion caused by high underground water level, and is especially suitable for high ion soil corrosion environment of coastal cities.
[0051] 6. Due to the increase of the self-limiting structure, the compensator is more uniform than the traditional stress, the pressure drop is greatly reduced, and the safe operation of the compensator is well protected by limiting.
[0052] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0053] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any meaning pertaining to the quantity of the features being described. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0054] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connection", "fixing" and the like should be interpreted in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0055] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0056] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the specification without contradiction.
[0057] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.
Claims
1. A bellows compensator for a direct buried pipe, characterized in that, The straight-buried pipeline at least comprises a first long pipe and a second long pipe, and the corrugated compensator comprises: an outer cylinder comprising a cylinder body, an intermediate limiting ring plate and two end limiting ring plates, the cylinder body being sleeved at the joint of the first long pipe and the second long pipe, one of the end limiting ring plates being sleeved on the first long pipe, the other end limiting ring plate being sleeved on the second long pipe, and the intermediate limiting ring plate being located between the first long pipe and the second long pipe; two flat rings, the two flat rings being respectively sleeved at the ends of the first long pipe and the second long pipe and located on the two sides of the intermediate limiting ring plate; two corrugated pipes, the two corrugated pipes being respectively sleeved at the ends of the first long pipe and the second long pipe and respectively located between the end limiting ring plates and the flat rings.
2. Corrugated compensator for direct buried pipes according to claim 1, characterized in that, Further comprising: four supporting rings, the four supporting rings being respectively arranged on the two end limiting ring plates and the two flat rings, and the two ends of the corrugated pipes being sleeved on the two supporting rings.
3. Corrugated compensator for direct buried pipes according to claim 2, characterized in that, Further comprising: two limiting rings, the two limiting rings being respectively sleeved on the first long pipe and the second long pipe and arranged adjacent to the inner sides of the end limiting ring plates.
4. The bellows compensator for a direct buried pipe according to claim 3, characterized by, Further comprising: two skin rings, the two skin rings being respectively sleeved on the first long pipe and the second long pipe, the two end limiting ring plates being respectively sleeved on the two skin rings, and one side of the skin ring abutting against the limiting ring.
5. The bellows compensator for a direct buried pipe according to claim 4, characterized by, Further comprising: two sealing mechanisms, the two sealing mechanisms being respectively arranged on the two skin rings.
6. The bellows compensator for a direct buried pipe according to claim 5, wherein Further comprising: two earth-shielding covers, the two earth-shielding covers being respectively sleeved on the first long pipe and the second long pipe, one side of the earth-shielding cover abutting against the outer side of the end limiting ring plate, and the earth-shielding cover wrapping the sealing mechanism and the skin ring inside.
7. The corrugated compensator for straight-buried pipeline according to claim 6, wherein the intermediate limiting ring plate and the two end limiting ring plates are welded on the cylinder body.
8. The corrugated compensator for straight-buried pipeline according to claim 6, wherein the inner diameter surface of the intermediate limiting ring plate is flush with the pipe wall of the first long pipe and the second long pipe.
9. A direct buried pipe characterized by, including: two fixed supports, the two fixed supports being oppositely arranged underground; a first long pipe, the first long pipe being arranged underground, one end of the first long pipe being connected with one of the fixed supports and extending towards the other fixed support; a second long pipe, the second long pipe being arranged underground, one end of the second long pipe being connected with the other fixed support and extending towards the first long pipe; a corrugated compensator, the corrugated compensator being the corrugated compensator according to any one of claims 1-8, the corrugated compensator being arranged at the joint of the first long pipe and the second long pipe.