CN110081260B - Annular anti-swing limiting device and method for circular-section pressure pipeline - Google Patents
Annular anti-swing limiting device and method for circular-section pressure pipeline Download PDFInfo
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- CN110081260B CN110081260B CN201910432933.0A CN201910432933A CN110081260B CN 110081260 B CN110081260 B CN 110081260B CN 201910432933 A CN201910432933 A CN 201910432933A CN 110081260 B CN110081260 B CN 110081260B
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- outer ring
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- inner ring
- absorbing
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention relates to an annular anti-swing limiting device of a circular-section pressure pipeline and a method thereof, wherein the annular limiting device comprises an annular sleeve, the annular sleeve comprises an inner ring and an outer ring, the outer ring is sleeved outside the inner ring, and a gap between the inner ring and the outer ring forms an annular cavity; a circle of flattening energy-absorbing columns are arranged in the annular cavity, the flattening energy-absorbing columns cling to the cavity wall of the annular cavity, an elongated energy-absorbing rod is arranged between the adjacent flattening energy-absorbing columns, one end of the elongated energy-absorbing rod is fixed with the inner ring, and the other end of the elongated energy-absorbing rod is fixed with the outer ring; the two axial ends of the inner ring are respectively provided with a first annular guard plate, and the two axial ends of the outer ring are respectively provided with a second annular guard plate; and a corner frame connected with the outer ring is arranged in a cavity between the outer ring of the annular sleeve and the building bearing structure, and a wedge-shaped backing plate group is filled in gaps among the outer ring, the corner frame and the building bearing structure. According to the invention, the pressure pipeline can be partially flattened by the energy absorption column and the plastic deformation of the elongated energy absorption rod to absorb the swing energy when swing occurs in any direction.
Description
Technical Field
The invention relates to an annular anti-swing limiting device and method for a circular-section pressure pipeline, which are used for preventing secondary disasters caused by swing of a large extent after the pressure pipeline is broken, and belong to the technical field of anti-swing limiting design for pressure pipeline design.
Background
The pressure pipeline is usually connected by welding to form a pipeline, and the welding seam is broken suddenly, high-pressure fluid is sprayed out from the fracture, so that the broken pipeline is greatly swung, and serious secondary disasters are caused. This is by no means allowed to occur in the high temperature and high pressure piping of a nuclear power plant. Therefore, an anti-swing limiting device needs to be arranged near the welding line of the pipeline, and swing after the pipeline is limited to be in a small range. Because the support of the pipeline is quite different, the swing direction during swing cannot be accurately predicted, and therefore, a device capable of generating swing-preventing limit in any direction within the 360-degree range of the periphery of the pipeline is required to meet engineering safety requirements.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an annular anti-swing limiting device and method for a circular-section pressure pipeline, which are sleeved outside the circular-section pressure pipeline, and can effectively absorb swing kinetic energy when the pressure pipeline swings in any radial direction to limit the swing distance of the pressure pipeline.
The invention aims to realize that an annular anti-swing limiting device of a circular-section pressure pipeline comprises an annular sleeve and is characterized in that: the annular sleeve comprises an inner ring and an outer ring, the outer ring is sleeved outside the inner ring, and a gap between the inner ring and the outer ring forms an annular chamber;
a circle of flattening energy-absorbing columns are arranged in the annular cavity, the flattening energy-absorbing columns cling to the cavity wall of the annular cavity, an elongated energy-absorbing rod is arranged between the adjacent flattening energy-absorbing columns, one end of the elongated energy-absorbing rod is fixed with the inner ring, and the other end of the elongated energy-absorbing rod is fixed with the outer ring;
the two axial ends of the inner ring are respectively provided with a first annular guard plate, the two axial ends of the outer ring are respectively provided with a second annular guard plate, and the flattening energy-absorbing column and the lengthening energy-absorbing rod in the annular cavity are prevented from being separated from the annular cavity through the first annular guard plates and the second annular guard plates;
when the annular sleeve is arranged in the building bearing structure, a corner frame connected with the outer ring is arranged in a cavity between the outer ring of the annular sleeve and the building bearing structure, and a wedge-shaped backing plate group is filled in gaps among the outer ring, the corner frame and the building bearing structure.
The flattening energy-absorbing column and the lengthening energy-absorbing rod are made of materials with high plastic deformation rate and are used for effectively absorbing the throwing energy.
The inner ring and the outer ring are of a half-divided structure;
the inner ring comprises a first half inner ring and a second half inner ring, and the first half inner ring and the second half inner ring are fixed into a whole circle through inner ring bolts to form an inner ring;
the outer ring comprises a first half outer ring and a second half outer ring, and the first half outer ring and the second half outer ring are fixed into a whole circle through outer ring bolts to form the outer ring.
The length direction of the elongated energy absorbing rod is perpendicular to or inclined with the length direction of the annular cavity; the length direction of the flattening energy-absorbing column is vertically parallel or inclined with the length direction of the annular chamber.
A method for preventing and limiting the circular section pressure pipeline annular anti-swing limiting device is characterized in that:
when the pressure pipeline is in whipping, part of the whipping load direction flattens the energy-absorbing column to plastically deform to absorb energy, and the part of the whipping load direction stretches the energy-absorbing rod to absorb energy, so that the pressure pipeline can be partially flattened and the part of the whipping energy-absorbing rod to plastically deform to absorb whipping energy when whipping occurs in any direction;
the cavity between the outer ring and the building bearing structure is provided with a corner frame connected with the outer ring, gaps among the outer ring, the corner frame and the building bearing structure are adjusted and compensated by a wedge-shaped backing plate group, and the throwing load is transferred to the building bearing structure through the outer ring by the action of the corner frame and the wedge-shaped backing plate group, so that the throwing load is ensured to be effectively transferred between the outer ring and the building bearing structure.
The invention has reasonable structure, easy production and manufacture and convenient use, a circle of flattening energy-absorbing columns are arranged in the annular cavity formed between the inner ring and the outer ring and cling to the inner cavity wall and the outer cavity wall, and the stretching energy-absorbing rods with two ends fixed on the inner ring and the outer ring are arranged between the adjacent flattening energy-absorbing columns, and the flattening energy-absorbing columns and the stretching energy-absorbing rods are made of materials with high plastic deformation rate so as to effectively absorb the whipping energy. The first annular guard plate and the second annular guard plate are arranged at the two axial ends of the inner ring and the outer ring to prevent deformation energy absorbing materials (flattening energy absorbing columns and lengthening energy absorbing rods) from falling off.
In order to transfer the swing load to the building bearing structure through the outer ring, a corner frame connected with the outer ring is arranged in a cavity between the outer ring and the building bearing structure, and gaps among the outer ring, the corner frame and the building bearing structure are adjusted and compensated by using wedge-shaped backing plate groups, so that the swing load is effectively transferred between the annular swing-preventing limiting device and the building bearing structure.
In order to facilitate the installation of the inner ring and the outer ring, a half-divided structure is adopted, and the inner ring bolts and the outer ring bolts are combined to form a complete circle.
When the pressure pipeline is in use, when the pressure pipeline is in whipping, the plurality of flattened energy-absorbing columns in the whipping load direction are plastically deformed to absorb energy, and the plurality of elongated energy-absorbing rods in the opposite direction are plastically elongated to absorb energy. The elongated energy absorbing post also serves the function of integrating the inner ring, the outer ring and the flattened energy absorbing post.
According to the invention, the pressure pipeline can be partially flattened by the energy absorption column and the plastic deformation of the elongated energy absorption rod to absorb the swing energy when swing occurs in any direction, so that the invention has great market application and popularization values.
Drawings
FIG. 1 is an axial view of a conduit of an annular anti-rattle restriction;
fig. 2 is a schematic view of A-A direction structure of fig. 1.
In the figure, 1 building bearing structure, 2 outer ring, 3 flattening energy-absorbing column, 4 inner ring bolt, 5 inner ring, 6 pressure pipeline, 7 elongated energy-absorbing rod, 8 first annular guard plate, 9 second annular guard plate, 10 wedge-shaped backing plate group, 11 outer ring bolt, 12 corner frame.
Detailed Description
The technical solutions in the examples of the present invention will be described in detail below with reference to the accompanying drawings in the examples of the present invention.
The annular anti-swing limiting device for the circular-section pressure pipeline comprises an annular sleeve, wherein the annular sleeve comprises an inner ring 5 and an outer ring 2, the outer ring 2 is sleeved outside the inner ring 5, and a gap between the inner ring 5 and the outer ring 2 forms an annular cavity.
A circle of flattening energy-absorbing columns 3 are arranged in the annular cavity, the flattening energy-absorbing columns 3 are clung to the cavity wall of the annular cavity, an elongated energy-absorbing rod 7 is arranged between the adjacent flattening energy-absorbing columns 3, one end of the elongated energy-absorbing rod 7 is fixed with the inner ring 5, and the other end of the elongated energy-absorbing rod 7 is fixed with the outer ring 2. The first annular guard plates 8 are arranged at the two axial ends of the inner ring 5, the second annular guard plates 9 are arranged at the two axial ends of the outer ring 2, and the flattening energy absorption column 3 and the lengthening energy absorption rod 7 in the annular cavity are prevented from being separated from the annular cavity through the first annular guard plates 8 and the second annular guard plates 9.
When the annular sleeve is arranged in the building bearing structure 1, a corner frame 12 connected with the outer ring 2 is arranged in a cavity between the outer ring 2 of the annular sleeve and the building bearing structure 1, and a wedge-shaped backing plate group 10 is filled in gaps among the outer ring 2, the corner frame 12 and the building bearing structure 1.
Furthermore, the flattening energy-absorbing column 3 and the lengthening energy-absorbing rod 7 are made of materials with high plastic deformation rate, so that the throwing energy can be effectively absorbed.
In addition, the inner ring 5 and the outer ring 2 can be designed into a half-structure, the inner ring 5 comprises a first half inner ring and a second half inner ring, and the first half inner ring and the second half inner ring are fixed into a whole circle through an inner ring bolt 4 to form the inner ring 5; the outer ring 2 comprises a first half outer ring and a second half outer ring, and the first half outer ring and the second half outer ring are fixed into a whole circle through outer ring bolts 11 to form the outer ring 2. The length direction of the elongated energy absorbing rod 7 is perpendicular to or inclined with the length direction of the annular chamber; the length direction of the flattening energy-absorbing column 3 is vertically parallel or inclined with the length direction of the annular chamber.
When the pressure pipeline 6 is in use, the inner ring 5 of the annular sleeve is sleeved on the pressure pipeline 6, when the pressure pipeline 6 is in whipping, the part of the whipping load direction flattens the energy-absorbing column 3 to plastically deform to absorb energy, and the part of the whipping load direction opposite to the part of the elongate energy-absorbing rod 7 also plastically elongates to absorb energy, so that the pressure pipeline 6 can be partially flattened to absorb whipping energy by the plastic deformation of the energy-absorbing column 3 and the elongate energy-absorbing rod 7 when whipping occurs in any direction;
the cavity between the outer ring 2 and the building bearing structure 1 is provided with a corner frame 12 connected with the outer ring 2, gaps among the outer ring 2, the corner frame 12 and the building bearing structure 1 are adjusted and compensated by a wedge-shaped backing plate group 10, and the whipping load is transmitted to the building bearing structure 1 through the outer ring 2 under the action of the corner frame 12 and the wedge-shaped backing plate group 10, so that the whipping load is ensured to be effectively transmitted between the outer ring 2 and the building bearing structure 1.
More specifically, a mode can be designed that the outer diameter phi 559mm of the pressure pipeline and the heat insulation thickness are 160mm, the annular anti-swing limiting device is selected from the outer diameter phi 930 and mm of the inner ring, the inner diameter phi 1108 and mm of the outer ring, the built-in phi 89 and mm flattening energy absorption tube, and the axial length is 450mm. Both the phi 89 mm flattening energy-absorbing tube and the elongated energy-absorbing rod are made of 06Cr19Ni10 stainless steel materials with the elongation percentage not less than 30 percent. The wall thickness of the flattening energy-absorbing tube and the cross-sectional dimension of the elongated energy-absorbing rod are determined according to the required anti-throwing load.
Claims (5)
1. The utility model provides a circular cross-section pressure conduit annular prevents getting rid of restriction device, includes annular cover, its characterized in that: the annular sleeve comprises an inner ring (5) and an outer ring (2), the outer ring (2) is sleeved outside the inner ring (5), and a gap between the inner ring (5) and the outer ring (2) forms an annular chamber;
a circle of flattening energy-absorbing columns (3) are arranged in the annular cavity, the flattening energy-absorbing columns (3) cling to the cavity wall of the annular cavity, an elongated energy-absorbing rod (7) is arranged between the adjacent flattening energy-absorbing columns (3), one end of the elongated energy-absorbing rod (7) is fixed with the inner ring (5), and the other end of the elongated energy-absorbing rod is fixed with the outer ring (2);
the two axial ends of the inner ring (5) are respectively provided with a first annular guard plate (8), the two axial ends of the outer ring (2) are respectively provided with a second annular guard plate (9), and the first annular guard plates (8) and the second annular guard plates (9) are used for preventing the flattening energy absorption column (3) and the lengthening energy absorption rod (7) in the annular cavity from falling out of the annular cavity;
when the annular sleeve is arranged in the building bearing structure (1), a corner frame (12) connected with the outer ring (2) is arranged in a cavity between the outer ring (2) of the annular sleeve and the building bearing structure (1), and a wedge-shaped backing plate group (10) is filled in gaps among the outer ring (2), the corner frame (12) and the building bearing structure (1).
2. The circular section pressure pipe annular anti-swing limiting device of claim 1, wherein: the flattening energy-absorbing column (3) and the lengthening energy-absorbing rod (7) are made of materials with high plastic deformation rate and are used for effectively absorbing the throwing energy.
3. The circular section pressure pipe annular anti-swing limiting device of claim 1, wherein: the inner ring (5) and the outer ring (2) are of a half-divided structure;
the inner ring (5) comprises a first half inner ring and a second half inner ring, and the first half inner ring and the second half inner ring are fixed into a whole circle through an inner ring bolt (4) to form the inner ring (5);
the outer ring (2) comprises a first half outer ring and a second half outer ring, and the first half outer ring and the second half outer ring are fixed into a whole circle through outer ring bolts (11) to form the outer ring (2).
4. The circular section pressure pipe annular anti-swing limiting device of claim 1, wherein: the length direction of the elongated energy absorbing rod (7) is perpendicular to or inclined with the length direction of the annular cavity; the length direction of the flattening energy-absorbing column (3) is vertical, parallel or inclined with the length direction of the annular chamber.
5. A method for anti-whip restriction using an annular anti-whip restriction apparatus for a circular section pressure conduit according to any one of claims 1 to 4, characterized in that:
the inner ring (5) of the annular sleeve is sleeved on the pressure pipeline (6), when the pressure pipeline (6) is in whipping, the part of the whipping load direction flattens the energy absorbing column (3) to absorb energy through plastic deformation, and the part of the whipping load direction opposite to the part of the whipping load direction stretches the energy absorbing rod (7) to absorb energy through plastic elongation, so that the pressure pipeline (6) can absorb whipping energy through plastic deformation of the part of the flattened energy absorbing column (3) and the stretch energy absorbing rod (7) when whipping occurs in any direction;
the cavity between the outer ring (2) and the building bearing structure (1) is provided with a corner frame (12) connected with the outer ring (2), gaps among the outer ring (2), the corner frame (12) and the building bearing structure (1) are adjusted and compensated by the wedge-shaped backing plate group (10), and the throwing load is transmitted to the building bearing structure (1) through the outer ring (2) under the action of the corner frame (12) and the wedge-shaped backing plate group (10), so that the throwing load is effectively transmitted between the outer ring (2) and the building bearing structure (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432933.0A CN110081260B (en) | 2019-05-23 | 2019-05-23 | Annular anti-swing limiting device and method for circular-section pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432933.0A CN110081260B (en) | 2019-05-23 | 2019-05-23 | Annular anti-swing limiting device and method for circular-section pressure pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081260A CN110081260A (en) | 2019-08-02 |
| CN110081260B true CN110081260B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910432933.0A Active CN110081260B (en) | 2019-05-23 | 2019-05-23 | Annular anti-swing limiting device and method for circular-section pressure pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110278901B (en) * | 2019-08-09 | 2021-08-03 | 浙江海洋大学 | Support frame for cage culture |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR820000501B1 (en) * | 1977-07-06 | 1982-04-08 | 떠블유. 에이치. 르랜드 | Impact energy absorbing pipe restraints |
| CN202647053U (en) * | 2012-06-28 | 2013-01-02 | 中广核工程有限公司 | Throwing and impacting resisting limit piece for pipeline of nuclear power plant |
| CN103362325A (en) * | 2013-07-31 | 2013-10-23 | 国核电力规划设计研究院 | Sling click-resistant device |
| CN107740886A (en) * | 2017-11-28 | 2018-02-27 | 福州大学 | Pipe-line system high temperature bi-directional shock resistance suspension bracket |
| CN107795752A (en) * | 2017-09-19 | 2018-03-13 | 中国核电工程有限公司 | A kind of nuclear power station feedwater piping laterally limits structure and laterally limits method |
| CN210004013U (en) * | 2019-05-23 | 2020-01-31 | 江苏慧通管道设备股份有限公司 | circular anti-throwing limiting device for pressure pipeline with circular section |
-
2019
- 2019-05-23 CN CN201910432933.0A patent/CN110081260B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR820000501B1 (en) * | 1977-07-06 | 1982-04-08 | 떠블유. 에이치. 르랜드 | Impact energy absorbing pipe restraints |
| CN202647053U (en) * | 2012-06-28 | 2013-01-02 | 中广核工程有限公司 | Throwing and impacting resisting limit piece for pipeline of nuclear power plant |
| CN103362325A (en) * | 2013-07-31 | 2013-10-23 | 国核电力规划设计研究院 | Sling click-resistant device |
| CN107795752A (en) * | 2017-09-19 | 2018-03-13 | 中国核电工程有限公司 | A kind of nuclear power station feedwater piping laterally limits structure and laterally limits method |
| CN107740886A (en) * | 2017-11-28 | 2018-02-27 | 福州大学 | Pipe-line system high temperature bi-directional shock resistance suspension bracket |
| CN210004013U (en) * | 2019-05-23 | 2020-01-31 | 江苏慧通管道设备股份有限公司 | circular anti-throwing limiting device for pressure pipeline with circular section |
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| CN110081260A (en) | 2019-08-02 |
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