CN107588275B - Pressure balance type expansion joint of transverse self-bearing elbow - Google Patents
Pressure balance type expansion joint of transverse self-bearing elbow Download PDFInfo
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- CN107588275B CN107588275B CN201710913749.9A CN201710913749A CN107588275B CN 107588275 B CN107588275 B CN 107588275B CN 201710913749 A CN201710913749 A CN 201710913749A CN 107588275 B CN107588275 B CN 107588275B
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Abstract
The constant force spring assembly is additionally arranged at the middle pipe of the expansion joint, upward spring lifting force F is preset in the constant force spring assembly, the lifting force F is equal to the weight of the middle pipe and the weight of a working medium, the weight of the middle pipe and the weight of the working medium are reduced, the expansion joint corrugated pipe can be effectively prevented from deforming due to the weight of the middle pipe and the weight of the working medium, and the safety risk of the expansion joint is effectively reduced. The working performance of the expansion joint is ensured, the safety and reliability of the expansion joint are improved, and the normal operation of the pipe system is ensured.
Description
Technical Field
The invention belongs to the technical field of petrochemical industry and town heat supply expansion joint self-bearing, and particularly relates to a pressure balance type expansion joint of a transverse self-bearing elbow.
Background
The existing elbow pressure balance type expansion joint mainly comprises an end pipe assembly, a working corrugated pipe, a middle pipe assembly, a three-way assembly, a balance corrugated pipe, a sealing head and a pull rod, and is mainly used for absorbing axial displacement and transverse displacement of a pipeline, meanwhile, the pressure thrust of the balance corrugated pipe is reduced, the stress of the pipeline is reduced, if the elbow pressure balance type expansion joint is transversely installed, due to the self and the weight of a working medium, the middle pipe assembly can sink, the corrugated pipe deforms, the service performance of the expansion joint is seriously influenced, the service life of the expansion joint is shortened, and the safe operation of the pipeline is damaged. With the development of petrochemical and town central heating technologies, the safety operation of the expansion joint directly affects the safety of the pipeline. Therefore, an expansion joint product with high safety performance needs to be designed, the product not only can meet the compensation thermal displacement capacity of the expansion joint, but also has a self-bearing function, the safety of the expansion joint product is improved, and the novel expansion joint with the simple structure is provided.
Fig. 1 is a schematic diagram of a conventional elbow pressure balance type expansion joint, which deforms a corrugated pipe due to the expansion joint and media during use, increases displacement load of the corrugated pipe, directly affects working performance of the corrugated pipe, and seriously affects normal operation of a piping system.
Disclosure of Invention
In order to solve the technical problems, the invention provides the pressure balance type expansion joint of the transverse self-bearing elbow, the constant force spring assembly is additionally arranged at the middle pipe of the expansion joint, so that the weight of the middle pipe and a working medium is reduced, the deformation of a corrugated pipe of the expansion joint caused by the weight of the middle pipe and the working medium can be effectively prevented, and the safety risk of the expansion joint is effectively reduced. The working performance of the expansion joint is ensured, the safety and reliability of the expansion joint are improved, and the normal operation of the pipe system is ensured.
In order to solve the technical problems, the adopted technical scheme is as follows: a pressure balance type expansion joint of a transverse self-bearing elbow pipe is sequentially composed of an end pipe assembly, a balance corrugated pipe A, a middle pipe, a working corrugated pipe, a three-way assembly, a balance corrugated pipe B and an end enclosure assembly which are connected in series, wherein a medium outlet of the three-way assembly is arranged downwards, a bearing rod is further arranged above the expansion joint, the axis of the bearing rod is parallel to the axis of the expansion joint, the bearing rod is provided with three supporting points which are positioned on the same straight line and support the bearing rod in the axis direction of the expansion joint, two of the supporting points are arranged on the three-way assembly, the other supporting point is arranged on the middle pipe, the supporting point arranged at the middle pipe is a constant force spring assembly, upward spring lifting force F is preset in the constant force spring assembly, and the lifting force F is equal to the weight of the middle pipe and the working medium.
The constant force spring assembly comprises a constant force spring and a lifting hook, wherein one end of the lifting hook penetrates through the bearing rod and then is connected with the middle pipe, and the other end of the lifting hook is sleeved with the constant force spring pre-pressed on the bearing rod.
The bearing rod is a hollow rod.
The invention has the beneficial effects that: the structure can ensure the compensation capability of the expansion joint, can also ensure the working performance of the expansion joint, reduces the safety risk of the expansion joint and improves the safety and reliability of the expansion joint.
Drawings
FIG. 1 is a prior art curved customer pressure balanced expansion joint;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along line C-C of FIG. 2;
in the figure: 1. the device comprises a seal head assembly, 2 an end pipe assembly, 3 a balance corrugated pipe B, 4 a three-way assembly, 5 a bearing rod, 6 a saddle assembly, 7 a working corrugated pipe, 8 a middle pipe, 9 a constant force spring assembly, 10 a pull rod, 11 a lifting hook, 12 a fixing bolt, 13 a constant force spring, 14 a spring box and 15 a balance corrugated pipe A.
Detailed Description
As shown in fig. 2, the pressure balance type expansion joint of the transverse self-bearing elbow pipe mainly comprises an end pipe assembly 2, a balance corrugated pipe a15, a working corrugated pipe 7, a middle pipe 8, a tee joint assembly 4, a balance corrugated pipe B3, a seal head assembly 1, a pull rod 10 and a bearing rod.
The medium outlet of the three-way component 4 is arranged downwards, the two ends of the three-way component on the same straight line are respectively connected with the balance corrugated pipe B3 and the working corrugated pipe 7, the axis of the bearing rod 5 is parallel to the axis of the expansion joint and is arranged right above the expansion joint after installation, the bearing rod 5 is provided with three supporting points which are arranged on the same straight line and support the bearing rod 5 in the direction of the axis of the expansion joint, the stress of the three supporting points is vertical upwards, two supporting points are arranged on the expansion joint three-way component, and the middle pipe is additionally provided with a constant force spring component, so that the weight of the middle pipe and the working medium is reduced. An upward spring lifting force F is preset in the constant force spring assembly 9, and the spring lifting force F is equal to the weight of the middle pipe and the working medium. The structure can effectively prevent the expansion joint corrugated pipe from deforming due to the weight of the intermediate pipe and the working medium, and effectively reduces the safety risk of the expansion joint. The working performance of the expansion joint is ensured, the safety and reliability of the expansion joint are improved, and the normal operation of the pipe system is ensured.
As shown in fig. 5, the constant force spring assembly 9 includes a constant force spring 13 and a hook 11, one end of the hook 11 passes through the bearing rod 5 and is connected to the middle tube 8, and the other end of the hook 11 is sleeved with the constant force spring 13 pre-pressed on the bearing rod 5. A lifting lug can be arranged on the middle pipe 8, the lifting hook 11 is hooked on the lifting lug, the height of the bearing rod 5 at the supporting point can be adjusted by utilizing the structure, and meanwhile, a certain pressure reducing effect is achieved. In order to protect the constant force spring 13, a spring box 14 can be additionally arranged above the bearing rod 5, and a lifting hook 11 sleeved with the constant force spring 13 is arranged in the spring box 14.
And the other two supporting points are arranged on the three-way component 4, as shown in fig. 4, the supporting point positioned in the middle of the bearing rod 5 is fixedly arranged, the bearing rod 5 is fixedly arranged on the saddle component through a fixing bolt, the saddle component 7 is fixedly welded on the three-way component 4, as shown in fig. 3, the other supporting point is provided with a lifting hook 11, one end of the lifting hook 11 penetrates through the bearing rod 5 and then is connected with the middle pipe 8, and the other end of the lifting hook is fixed on the bearing rod.
As can be seen from figures 3 and 5, the lifting lug is composed of vertical plates which are parallel to each other and a cross rod which penetrates through the two vertical plates to be fixed, one end of a lifting hook 11 is hooked on the cross rod, and according to the height of a saddle, the angle of the lifting hook is adjusted to ensure that the height of a bearing rod on three supporting points is consistent, so that the axis of the bearing rod is completely parallel to the axis of an expansion joint.
As shown in fig. 3, 4 and 5, in order to reduce the installation weight, the bearing rod is a hollow rod with high bearing capacity, the cross section of the hollow rod is of a frame-shaped structure, so that the nut can be conveniently screwed on the surface of the bearing rod 5, and meanwhile, the height positioning is conveniently carried out.
Claims (1)
1. The utility model provides a horizontal self-supporting return bend pressure balance type expansion joint, the expansion joint comprises end pipe subassembly (2), balanced bellows A (15), intervalve (8), work bellows (7), tee bend subassembly (4), balanced bellows B (3) and head subassembly (1) that establish ties mutually in proper order, its characterized in that: the medium outlet of the three-way component (4) is arranged downwards, a bearing rod (5) is further arranged above the expansion joint, the axis of the bearing rod (5) is parallel to the axis of the expansion joint, the bearing rod (5) is provided with three supporting points which are positioned on the same straight line and support the bearing rod (5) in the direction of the axis of the expansion joint, two supporting points are arranged on the three-way component (4), the other supporting point is arranged on the middle pipe (8), the supporting point arranged at the middle pipe (8) is a constant force spring component (9), an upward spring lifting force F is preset in the constant force spring component (9), and the lifting force F is equal to the weights of the middle pipe (8) and the working medium;
the constant force spring assembly (9) comprises a constant force spring (13) and a lifting hook (11), one end of the lifting hook (11) penetrates through the bearing rod (5) and then is connected with the middle pipe (8), and the other end of the lifting hook (11) is sleeved with the constant force spring (13) which is pre-pressed on the bearing rod (5);
the bearing rod (5) is a hollow rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913749.9A CN107588275B (en) | 2017-09-30 | 2017-09-30 | Pressure balance type expansion joint of transverse self-bearing elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913749.9A CN107588275B (en) | 2017-09-30 | 2017-09-30 | Pressure balance type expansion joint of transverse self-bearing elbow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588275A CN107588275A (en) | 2018-01-16 |
| CN107588275B true CN107588275B (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710913749.9A Active CN107588275B (en) | 2017-09-30 | 2017-09-30 | Pressure balance type expansion joint of transverse self-bearing elbow |
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| Country | Link |
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| CN (1) | CN107588275B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555554B (en) * | 2020-12-11 | 2024-04-19 | 中船双瑞(洛阳)特种装备股份有限公司 | Self-bearing expansion joint for pipe orifice of severe stress equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201262299Y (en) * | 2008-08-28 | 2009-06-24 | 南京晨光东螺波纹管有限公司 | Outlet thermal compensation structure of smoke gas-turbine |
| CN202972355U (en) * | 2012-12-04 | 2013-06-05 | 洛阳双瑞特种装备有限公司 | Pressure balanced expansion joint for self-load bearing elbow pipe |
| DE102013202333A1 (en) * | 2013-02-13 | 2014-08-14 | Siemens Aktiengesellschaft | compensator |
| CN204358327U (en) * | 2014-12-29 | 2015-05-27 | 北京航天凌云波纹管有限公司 | A kind of without thrust bend pipe pressure balancing formula FlexbleJoint |
| CN204459590U (en) * | 2014-12-23 | 2015-07-08 | 天津达陆钢绞线有限公司 | A kind of pressure balance type bellows compensator |
| CN204879238U (en) * | 2015-06-09 | 2015-12-16 | 洛阳双瑞特种装备有限公司 | Restricted type expansion joint of low stress load -carrying construction |
| CN207406974U (en) * | 2017-09-30 | 2018-05-25 | 洛阳双瑞特种装备有限公司 | A kind of transverse direction self-supporting bend pipe pressure balance type expansion joint |
-
2017
- 2017-09-30 CN CN201710913749.9A patent/CN107588275B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201262299Y (en) * | 2008-08-28 | 2009-06-24 | 南京晨光东螺波纹管有限公司 | Outlet thermal compensation structure of smoke gas-turbine |
| CN202972355U (en) * | 2012-12-04 | 2013-06-05 | 洛阳双瑞特种装备有限公司 | Pressure balanced expansion joint for self-load bearing elbow pipe |
| DE102013202333A1 (en) * | 2013-02-13 | 2014-08-14 | Siemens Aktiengesellschaft | compensator |
| CN204459590U (en) * | 2014-12-23 | 2015-07-08 | 天津达陆钢绞线有限公司 | A kind of pressure balance type bellows compensator |
| CN204358327U (en) * | 2014-12-29 | 2015-05-27 | 北京航天凌云波纹管有限公司 | A kind of without thrust bend pipe pressure balancing formula FlexbleJoint |
| CN204879238U (en) * | 2015-06-09 | 2015-12-16 | 洛阳双瑞特种装备有限公司 | Restricted type expansion joint of low stress load -carrying construction |
| CN207406974U (en) * | 2017-09-30 | 2018-05-25 | 洛阳双瑞特种装备有限公司 | A kind of transverse direction self-supporting bend pipe pressure balance type expansion joint |
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| CN107588275A (en) | 2018-01-16 |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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