CN104633365A - Telescopic compensation structure suitable for low-temperature heat insulation tube - Google Patents
Telescopic compensation structure suitable for low-temperature heat insulation tube Download PDFInfo
- Publication number
- CN104633365A CN104633365A CN201410826510.4A CN201410826510A CN104633365A CN 104633365 A CN104633365 A CN 104633365A CN 201410826510 A CN201410826510 A CN 201410826510A CN 104633365 A CN104633365 A CN 104633365A
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- China
- Prior art keywords
- protective casing
- heat insulation
- tube
- compensation structure
- protecting sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Thermal Insulation (AREA)
Abstract
The invention relates to a telescopic compensation structure suitable for a low-temperature heat insulation tube. The telescopic compensation structure comprises a protecting sleeve tube component arranged between inner tubes and an outer tube of the low-temperature heat insulation tube. The protecting sleeve tube component comprises a corrugated-tube-shaped expansion joint and a protecting sleeve tube. The expansion joint is arranged in the protecting sleeve tube. The expansion joint is used for connecting of the two sections of inner tubes, and sealing is carried out at the connecting portion. The two ends of the protecting sleeve tube are provided with annular supporting plates and fixing plates respectively and are connected with the inner tubes. The supporting plates are fixedly connected with the inner tubes in a spot-welding mode. The fixing plates are fixedly connected with the inner tubes in a full-welding mode. At least two through holes which are distributed in the periphery direction are formed in the tube wall of the protecting sleeve tube. A plurality of evenly-formed through holes are formed in the supporting plates and the fixing plates. Good telescopic compensating capacity is achieved, the basic rigidity using requirements can be met, complete washing can be conveniently carried out on the outer portion of the expanding joint, so that impurities such as grease are removed, and the problem that a dead corner evacuating cannot be solved easily is effectively avoided.
Description
Technical field
The present invention relates to the field of the various cryogenic medias such as air separation plant, the isometric distance of LNG gas station, large discharge delivering liquid oxygen, liquid nitrogen, liquid argon gas, particularly relate to a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe.
Background technique
In order to compensate the phenomenon of expanding with heat and contract with cold because temperature difference influence brings on Cryo Heat Insulation pipe, usually all can arrange expansion compensation device on interior pipe or outer tube, traditional collocation structure generally adopts metal bellow.In fig. 1, metal bellow adds ripple net due to outside, although serve the effect of certain raising rigidity, but be all fixed due to two ends simultaneously thus lost due compensating action, namely be difficult to enough extending amounts, in addition due to the existence of these ripple nets, can not check the bellows segment of inside and clean grease, dead angle when vacuumizing heat-insulated pipe with regard to there will be local is difficult to situation thoroughly of finding time, and affects vacuumizing effect.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe, both there is good flexible compensation ability, basic rigidity usage requirement can be ensured again, sufficient vacuumizing effect can be realized simultaneously, avoid Dead Core Problems of finding time.
The technological scheme that the present invention solves the problems of the technologies described above is as follows: a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe, comprise the protective casing assembly between the inner and outer tubes being arranged at Cryo Heat Insulation pipe, described protective casing assembly comprises expansion joint and the protective casing of corrugated tube shape, described expansion joint is arranged at the inside of described protective casing, describedly used for expansion jointly to seal in joint in the described interior pipe of linking two sections, described protective casing is arranged on the outside of described interior pipe, the two ends of the described protective casing respectively radial dunnage being provided with annular are connected with described interior pipe with fixed plate, described dunnage is fixedly connected with described interior pipe by the mode of spot welding, described fixed plate is fixedly connected with described interior pipe by the mode of full weld.
Preferably; the tube wall of described protective casing is provided with the through hole of at least two circumference distributions; be preferably 2-4 slotted hole, concrete quantity and the bore size offered requires according to the actual diameter of expansion joint and outside protective case and determine, to make maintenance connection inside and outside described protective casing.
Preferably; described dunnage and described fixed plate are equipped with multiple through hole be evenly arranged; be preferably 6-12, concrete quantity and the bore size offered requires according to the actual diameter of expansion joint and outside protective case and determine, to make to keep connection inside and outside described protective casing.
Based on technique scheme, the invention has the beneficial effects as follows: the present invention sets up the expansion joint structure of protective casing assembly basis in traditional outside is improved, makes it that both there is good flexible compensation ability, basic rigidity usage requirement can be ensured again.Structure fabrication is simple, cheap simultaneously, is convenient to carry out thoroughly cleaning to expansion joint outside and, to remove the impurity such as grease, effectively avoids the insoluble problem in dead angle of finding time, thus achieve the effect of high vacuum.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that Cryo Heat Insulation pipe adopts metal bellow flexible compensation structure;
Fig. 2 is the schematic diagram of flexible compensation structure of the present invention;
Fig. 3 is the schematic diagram of protective casing in Fig. 2;
Fig. 4 is the schematic diagram of the cross section of dunnage in Fig. 2;
Fig. 5 is the schematic diagram of the cross section of fixed plate in Fig. 2.
Being labeled as in accompanying drawing: 1. pipe in, 2. outer tube, 3. metal bellow, 4. dunnage, 5. axial expansion joint, 6. protective casing, 7. fixed plate.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 2, a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe, comprise the protective casing assembly between the inner and outer tubes being arranged at Cryo Heat Insulation pipe, described protective casing assembly comprises expansion joint and the protective casing of corrugated tube shape, described expansion joint is arranged at the inside of described protective casing, describedly used for expansion jointly to seal in joint in the described interior pipe of linking two sections, described protective casing is arranged on the outside of described interior pipe, the two ends of the described protective casing respectively radial dunnage being provided with annular are connected with described interior pipe with fixed plate, described dunnage is fixedly connected with described interior pipe by the mode of spot welding, described fixed plate is fixedly connected with described interior pipe by the mode of full weld.
As shown in Figure 3; preferably, the tube wall of described protective casing is provided with the through hole of at least two circumference distributions, is preferably 2-4 slotted hole; concrete quantity and the bore size offered requires according to the actual diameter of expansion joint and outside protective case and determine, to make to keep connection inside and outside described protective casing.
As shown in Figure 4, Figure 5; preferably, described dunnage and described fixed plate are equipped with multiple through hole be evenly arranged, are preferably 6-12; concrete quantity and the bore size offered requires according to the actual diameter of expansion joint and outside protective case and determine, to make to keep connection inside and outside described protective casing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. one kind is applicable to the flexible compensation structure of Cryo Heat Insulation pipe, comprise the protective casing assembly between the inner and outer tubes being arranged at Cryo Heat Insulation pipe, it is characterized in that: described protective casing assembly comprises expansion joint and the protective casing of corrugated tube shape, described expansion joint is arranged at the inside of described protective casing, describedly used for expansion jointly to seal in joint in the described interior pipe of linking two sections, described protective casing is arranged on the outside of described interior pipe, the two ends of the described protective casing respectively radial dunnage being provided with annular are connected with described interior pipe with fixed plate, described dunnage is fixedly connected with described interior pipe by the mode of spot welding, described fixed plate is fixedly connected with described interior pipe by the mode of full weld.
2. a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe according to claim 1, is characterized in that, the tube wall of described protective casing is provided with the through holes of at least two circumference distributions, to make to keep being communicated with inside and outside described protective casing.
3. a kind of flexible compensation structure being applicable to Cryo Heat Insulation pipe according to claim 1 or 2, is characterized in that, described dunnage and described fixed plate are equipped with multiple through hole be evenly arranged, to make to keep inside and outside described protective casing being communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826510.4A CN104633365B (en) | 2014-12-25 | 2014-12-25 | A kind of flexible compensation structure suitable for Cryo Heat Insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826510.4A CN104633365B (en) | 2014-12-25 | 2014-12-25 | A kind of flexible compensation structure suitable for Cryo Heat Insulation pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104633365A true CN104633365A (en) | 2015-05-20 |
| CN104633365B CN104633365B (en) | 2017-09-22 |
Family
ID=53212430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410826510.4A Active CN104633365B (en) | 2014-12-25 | 2014-12-25 | A kind of flexible compensation structure suitable for Cryo Heat Insulation pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN104633365B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375120A (en) * | 2019-07-02 | 2019-10-25 | 亚达管道系统股份有限公司 | Double-wall pipe with free wxpansion section |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060197340A1 (en) * | 2005-03-03 | 2006-09-07 | Katayama Kogyo Co., Ltd. | Flexible joint for exhaust pipe |
| CN201731218U (en) * | 2010-07-13 | 2011-02-02 | 大连冶电仪表有限公司 | Pipeline compensator |
| WO2011134633A1 (en) * | 2010-04-29 | 2011-11-03 | Boa Balg- Und Kompensatoren-Technologie Gmbh | Flexible line element |
| CN103712025A (en) * | 2012-10-08 | 2014-04-09 | 江苏晨光波纹管有限公司 | Ultralow-temperature corrugated pipe compensator |
| CN203730995U (en) * | 2014-03-06 | 2014-07-23 | 泰州汇海管件科技有限公司 | Maintenance-free directly-embedded bi-directional internally-pressing corrugated compensator |
| CN203823331U (en) * | 2014-03-06 | 2014-09-10 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure corrugated compensator |
| CN203847893U (en) * | 2014-03-31 | 2014-09-24 | 大连科华热力管道有限公司 | Steel-in-steel directly-buried internal-pressure type compensator with leakage point investigation device |
-
2014
- 2014-12-25 CN CN201410826510.4A patent/CN104633365B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060197340A1 (en) * | 2005-03-03 | 2006-09-07 | Katayama Kogyo Co., Ltd. | Flexible joint for exhaust pipe |
| WO2011134633A1 (en) * | 2010-04-29 | 2011-11-03 | Boa Balg- Und Kompensatoren-Technologie Gmbh | Flexible line element |
| CN201731218U (en) * | 2010-07-13 | 2011-02-02 | 大连冶电仪表有限公司 | Pipeline compensator |
| CN103712025A (en) * | 2012-10-08 | 2014-04-09 | 江苏晨光波纹管有限公司 | Ultralow-temperature corrugated pipe compensator |
| CN203730995U (en) * | 2014-03-06 | 2014-07-23 | 泰州汇海管件科技有限公司 | Maintenance-free directly-embedded bi-directional internally-pressing corrugated compensator |
| CN203823331U (en) * | 2014-03-06 | 2014-09-10 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure corrugated compensator |
| CN203847893U (en) * | 2014-03-31 | 2014-09-24 | 大连科华热力管道有限公司 | Steel-in-steel directly-buried internal-pressure type compensator with leakage point investigation device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375120A (en) * | 2019-07-02 | 2019-10-25 | 亚达管道系统股份有限公司 | Double-wall pipe with free wxpansion section |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104633365B (en) | 2017-09-22 |
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