CN117146089B - Bellows expansion joint and bellows thereof - Google Patents
Bellows expansion joint and bellows thereof Download PDFInfo
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- CN117146089B CN117146089B CN202311414364.XA CN202311414364A CN117146089B CN 117146089 B CN117146089 B CN 117146089B CN 202311414364 A CN202311414364 A CN 202311414364A CN 117146089 B CN117146089 B CN 117146089B
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- expansion joint
- telescopic
- fixedly connected
- pipe
- ring
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- 238000007789 sealing Methods 0.000 claims description 16
- 238000010030 laminating Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 16
- 230000008859 change Effects 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 9
- 230000008602 contraction Effects 0.000 description 5
- 238000007665 sagging Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16L51/028—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with the expansion or contraction of each corrugation being limited
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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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
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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
- F16L51/022—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with a single corrugation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the technical field of corrugated pipes, and particularly discloses a corrugated pipe expansion joint and a corrugated pipe thereof, wherein the corrugated pipe expansion joint comprises expansion joint components, two sides of each expansion joint component are fixedly connected with fixed pipe orifices, each expansion joint component comprises an expansion joint main body, the inner side of each expansion joint main body is fixedly connected with a first telescopic component, and each first telescopic component comprises a circular pipe; according to the invention, in the process that the expansion joint is subjected to pressure increase and temperature increase, the included angle in the expansion joint main body is increased due to pressure and temperature change, namely the expansion joint assembly begins to expand, and meanwhile, the two first telescopic pipes in each expansion joint main body are mutually far away to leak out the annular pipe, so that the inner wall of the expansion joint is relatively smooth in the working process of the expansion joint, the V-shaped part in the expansion joint can not store the liquid flowing through the inside of the expansion joint when the liquid flows through the expansion joint, and the situation that the service life of the expansion joint is shortened due to the fact that a large amount of liquid is stored in the V-shaped part after the working of the expansion joint is completed is avoided.
Description
Technical Field
The invention relates to the technical field of corrugated pipes, in particular to a corrugated pipe expansion joint and a corrugated pipe thereof.
Background
The corrugated pipe mainly comprises a metal corrugated pipe, a corrugated expansion joint, a corrugated heat exchange pipe, a diaphragm capsule, a metal hose and the like. The metal corrugated pipe is mainly applied to the functions of compensating thermal deformation, shock absorption, pipeline settlement deformation and the like of pipelines, and is widely applied to industries of petrochemical industry, instruments, aerospace, chemical industry, electric power, cement, metallurgy and the like. Bellows made of other materials such as plastics have irreplaceable functions in the fields of medium transmission, electric power threading, machine tools, household appliances and the like.
The bellows expansion joint is widely applied to metallurgical blast furnace gas conveying systems, coke oven gas conveying systems and converter gas conveying systems at present and is used for compensating displacement of the bellows caused by expansion and contraction due to temperature influence of pipelines or equipment, so that safe and reliable operation of the system is ensured, the bellows expansion joint is a compensator of a conveying pipeline, and the bellows is a compensation element of the expansion joint.
The existing expansion joint has some problems in the actual use process, and the problems are as follows:
when the existing expansion joint works, the expansion joint compensates the pipeline or equipment to displace the corrugated pipe due to the influence of temperature, so that the normal operation of the equipment is ensured, but after the expansion joint is expanded by the pipeline or the equipment due to the temperature rise, the expansion joint is contracted due to the temperature reduction after the equipment or the pipeline temperature reduction, but the contraction value of the expansion joint is smaller than the expansion value due to the deformation of the expansion joint caused by the temperature rise, namely, the expansion joint loses the normal expansion and contraction function after the expansion joint is expanded and contracted for a long time, the safe and reliable operation of the equipment cannot be continuously ensured, so that the expansion joint needs to be replaced regularly, the phenomenon that the normal operation of the equipment cannot be ensured due to the aging of the expansion joint is avoided, the liquid flowing through the inside of the expansion joint can be stored at the V-shaped position inside the expansion joint when the liquid flows through the expansion joint, and the V-shaped position stores a large amount of liquid after the operation is finished, the expansion joint is rusted or corroded, so that the service life of the expansion joint is shortened.
The existing corrugated pipe has the following problems in the actual use process:
the normal use of bellows is through the inflation and the normal work of shrink completion of its expansion joint, but the expansion joint can not carry out normal flexible because of the weight of expansion joint itself and its inside circulated liquid sagging in the in-process of inflation, makes the expansion joint can not normally reduce the temperature and the pressure that equipment received through the inflation.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a bellows expansion joint and a bellows thereof, so as to solve the above-mentioned problems in the prior art.
The invention provides the following technical scheme: the utility model provides a bellows expansion joint, includes expansion joint subassembly, the fixed mouth of pipe of both sides fixedly connected with of expansion joint subassembly, expansion joint subassembly includes the expansion joint main part, the inboard fixedly connected with of expansion joint main part is first flexible subassembly, first flexible subassembly includes the ring canal, the equal fixedly connected with of both sides of ring canal is first spacing ring, the outside swing joint of ring canal has two first flexible pipes, both sides first inclined plane has been seted up to first flexible pipe both sides, two the second inclined plane has been seted up to the inboard of first flexible pipe.
Further, the outside fixedly connected with second flexible subassembly of first flexible subassembly, the flexible subassembly of second includes flexible ring plate, the one side fixedly connected with resilience subassembly of flexible ring plate, the connection inclined plane has been seted up to one side of flexible ring plate, resilience subassembly includes the telescopic tube, the inside one side fixedly connected with spring of telescopic tube, the opposite side fixedly connected with division board of spring, the opposite side fixedly connected with second spacing ring of the inside opposite side spring of telescopic tube, the inside fixedly connected with telescopic column of second spacing ring, one side fixedly connected with locating cap of telescopic column, the third inclined plane has been seted up to the opposite side of locating cap.
Further, a sliding groove is formed in the inner side of the first telescopic pipe, the section size of the sliding groove of the first telescopic pipe is matched with the size of the side face of the first limiting ring, and the section size of the opening of the sliding groove of the first telescopic pipe is matched with the section size of the annular pipe.
Further, the angle of the first inclined plane is matched with the angle of the inclined plane on the inner side of the expansion joint main body, the inclination angle of the second inclined plane is forty-five degrees, and the first inclined plane of the first telescopic pipe is fixedly connected with the inner side of the expansion joint main body.
Further, the telescopic tank has been seted up to telescopic tube's inboard, the inside diameter of telescopic tube telescopic tank and the diameter of second spacing ring mutually support, the inside one side open-ended diameter of telescopic tube and the side diameter of telescopic column mutually support, the diameter in the division board outside and the inside diameter of telescopic tube mutually support, the inside diameter of division board and the diameter of telescopic column mutually support, the third inclined plane is mutually laminated with the connection inclined plane.
Further, the inside diameter of location cap and the diameter in telescopic tube outside mutually support, the outside fixed connection of the inboard and the first flexible pipe of telescopic ring board, location cap and the telescopic ring board fixed connection of one side, telescopic tube and the telescopic ring board fixed connection of opposite side.
The utility model provides a bellows, fixed orificial outside has fixedly cup jointed the telescopic tube subassembly, the telescopic tube subassembly includes the flexible pipe of second, one side swing joint of the inside of flexible pipe of second has the third spacing ring, the opposite side fixedly connected with third flexible pipe of third spacing ring, the inside opposite side fixedly connected with holding ring plate of flexible pipe of second, the equal fixedly connected with flange of one side of flexible pipe of second and the opposite side of flexible pipe of third, one side fixedly connected with first seal groove of flange, one side of flange is located the inboard fixedly connected with second seal groove of first seal groove.
Further, the side wall of the second telescopic pipe is provided with a telescopic groove, the section size of the inside of the telescopic groove of the second telescopic pipe is matched with the section size of the third limiting ring, the interval of the section of the positioning ring plate is matched with the thickness of the third telescopic pipe, the interval between the first sealing groove and the second sealing groove is the same as the width of the sealing strip, and the side face of the flange is provided with a fixing hole.
The invention has the technical effects and advantages that:
1. according to the invention, in the process that the expansion joint is subjected to pressure increase and temperature increase, the included angle in the expansion joint main body is increased due to pressure and temperature change, namely the expansion joint assembly starts to expand, and meanwhile, the two first telescopic pipes in each expansion joint main body are mutually far away to leak out the annular pipe, so that the inner wall of the expansion joint is relatively smooth in the working process of the expansion joint, liquid can not be stored at the V-shaped position in the expansion joint due to flowing of the liquid, and the situation that the service life of the expansion joint is shortened due to the fact that a large amount of liquid is stored at the V-shaped position after the working of the expansion joint is completed is avoided.
2. According to the expansion joint, in the process of pressure increase and temperature increase, the two expansion ring plates are mutually far away, the second limiting ring is far away from the right side inside the expansion sleeve, then the compression spring is simultaneously close to the partition plate, the positioning cap and the expansion column extend out of the expansion sleeve, so that the pressure and the temperature of the expansion joint can be gradually reduced after the expansion joint is compressed, after the external force of the expansion joint due to the temperature and the pressure disappears, the second limiting ring and the expansion column are pushed to the right side through the deformation force of the spring, the two expansion ring plates are combined, and meanwhile the two first expansion tubes are driven to be close together, so that the expansion joint component can be contracted to be deformed before the expansion joint component can be contracted after the pressure and the temperature are reduced, the shrinkage value of the expansion joint can be smaller than the expansion value due to the deformation of the expansion joint due to the temperature increase, namely, the expansion joint can lose the normal expansion shrinkage function after the expansion joint is expanded for a long time, the safety and reliability of equipment can not be continuously ensured, and the phenomenon that the expansion joint is required to be replaced regularly, and the safety operation of the equipment is affected is avoided.
3. According to the expansion joint, the third limiting ring is far away from the left side of the inside of the second expansion pipe, the expansion joint assembly is integrally elongated, and the expansion joint is elongated along with expansion of the expansion joint, so that the expansion joint can be effectively set off by the inner side of the expansion joint in the expansion joint elongation process, and the phenomenon that the expansion joint cannot normally stretch due to the weight of the expansion joint and sagging of liquid flowing in the expansion joint is avoided, and the expansion joint cannot normally pass through the temperature and pressure of expansion reduction equipment is avoided.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the bellows expansion joint of the present invention.
FIG. 2 is a schematic cross-sectional view of an expansion joint assembly according to the present invention.
Fig. 3 is a schematic cross-sectional view of a first telescopic assembly according to the present invention.
Fig. 4 is a schematic cross-sectional plan view of a first telescopic assembly according to the present invention.
Fig. 5 is a schematic view of the expansion structure of the first telescopic assembly according to the present invention.
Fig. 6 is a schematic structural diagram of a second telescopic assembly according to the present invention.
FIG. 7 is a schematic cross-sectional view of a rebound assembly of the present invention.
FIG. 8 is a schematic cross-sectional plan view of a rebound assembly of the present invention.
Fig. 9 is a schematic view of the rebound assembly extension structure of the present invention.
Fig. 10 is a schematic cross-sectional view of a telescopic tube assembly according to the present invention.
Fig. 11 is a schematic view of the telescopic tube assembly of the present invention.
Fig. 12 is a schematic cross-sectional plan view of a telescoping tube assembly of the present invention.
Fig. 13 is an enlarged schematic view of the structure of the present invention at a.
Fig. 14 is an enlarged schematic view of the structure of the present invention at B.
The reference numerals are: 1. an expansion joint assembly; 101. an expansion joint main body; 102. a first telescoping assembly; 1021. a grommet; 1022. a first stop collar; 1023. a first telescopic tube; 1024. a first inclined surface; 1025. a second inclined surface; 103. a second telescoping assembly; 1031. a telescopic ring plate; 1032. a rebound assembly; 10321. a telescoping tube; 10322. a spring; 10323. a partition plate; 10324. positioning caps; 10325. a third inclined surface; 10326. a telescopic column; 10327. a second limiting ring; 1033. a connecting inclined plane; 2. fixing the pipe orifice; 3. a telescoping tube assembly; 301. a second telescopic tube; 302. a flange; 303. a first seal groove; 304. a second seal groove; 305. a third telescopic tube; 306. a third limiting ring; 307. and positioning the ring plate.
Detailed Description
The present invention will be described more fully with reference to the accompanying drawings, and the configurations of the bellows expansion joint and the bellows thereof according to the present invention are not limited to the configurations described in the following embodiments, but all other embodiments obtained by a person skilled in the art without any inventive effort are within the scope of the present invention.
Referring to fig. 1-5, the invention provides a bellows expansion joint, which comprises an expansion joint assembly 1, wherein two sides of the expansion joint assembly 1 are fixedly connected with a fixed pipe orifice 2, the expansion joint assembly 1 comprises an expansion joint main body 101, the inner side of the expansion joint main body 101 is fixedly connected with a first expansion assembly 102, the first expansion assembly 102 comprises a ring pipe 1021, two sides of the ring pipe 1021 are fixedly connected with a first limiting ring 1022, the outer side of the ring pipe 1021 is movably connected with two first expansion pipes 1023, two sides of the first expansion pipes 1023 on the two sides are provided with first inclined planes 1024, and the inner side of the two first expansion pipes 1023 is provided with a second inclined plane 1025;
the inner side of the first telescopic tube 1023 is provided with a sliding groove, the cross section size of the sliding groove of the first telescopic tube 1023 is matched with the size of the side surface of the first limiting ring 1022, the cross section size of the opening of the sliding groove of the first telescopic tube 1023 is matched with the cross section size of the ring canal 1021, the angle of the first inclined plane 1024 is matched with the inclined plane angle of the inner side of the expansion joint main body 101, the inclined angle of the second inclined plane 1025 is forty five degrees, and the first inclined plane 1024 of the first telescopic tube 1023 is fixedly connected with the inner side of the expansion joint main body 101;
in the process of increasing the pressure and increasing the temperature of the expansion joint, the included angle in the expansion joint main body 101 is increased due to the change of the pressure and the temperature, namely the expansion joint assembly 1 begins to expand, meanwhile, the two first telescopic pipes 1023 in each expansion joint main body 101 are mutually far away to leak out the annular pipe 1021, so that the inner wall of the expansion joint is relatively smooth in the process of working, liquid can not be stored at the V-shaped position in the expansion joint due to the flowing of the liquid, and the situation that the service life of the expansion joint is shortened due to the fact that a large amount of liquid is stored at the V-shaped position after the working of the expansion joint is completed is avoided;
in particular, in this embodiment, the fit relationship between the cross-sectional dimension of the sliding groove of the first telescopic tube 1023 and the cross-sectional dimension of the first limiting ring 1022 is a tolerance fit relationship, and the tolerance value only needs to ensure that the first telescopic tube 1023 and the first limiting ring 1022 can perform relative displacement, that is, the embodiment does not specifically limit the tolerance value, the fit relationship between the cross-sectional dimension of the opening of the sliding groove of the first telescopic tube 1023 and the cross-sectional dimension of the collar 1021 is a tolerance fit, and the tolerance value needs to ensure that the relative displacement can be performed between the first telescopic tube 1023 and the first limiting ring 1022, and reduce the gap between the collar 1021 and the inner wall of the opening of the first telescopic tube 1023 as much as possible, that is, the embodiment does not specifically limit the tolerance value, that the angle of the first inclined plane 1024 is the same as the angle of the inclined plane on the inner side of the expansion joint main body 101, that is, that the first inclined plane 1024 can be completely attached to the inner wall of the expansion joint main body 101, and the connection mode of the first inclined plane 1024 and the inner side of the expansion joint main body 101 can be welded, riveted or fixed in other modes, that is, that the fixed connection of the first inclined plane 1024 and the inner wall of the expansion joint main body 101 is ensured, that is not limited in particular mode.
Referring to fig. 6-9, a second telescopic assembly 103 is fixedly connected to the outer side of the first telescopic assembly 102, the second telescopic assembly 103 comprises a telescopic ring plate 1031, one side of the telescopic ring plate 1031 is fixedly connected with a rebound assembly 1032, one side of the telescopic ring plate 1031 is provided with a connecting inclined plane 1033, the rebound assembly 1032 comprises a telescopic tube 10321, one side of the inside of the telescopic tube 10321 is fixedly connected with a spring 10322, the other side of the spring 10322 is fixedly connected with a partition plate 10323, the other side of the inside of the telescopic tube 10321 is fixedly connected with a second limiting ring 10327, the inside of the second limiting ring 10327 is fixedly connected with a telescopic column 10326, one side of the telescopic column 10326 is fixedly connected with a positioning cap 10324, and the other side of the positioning cap 10324 is provided with a third inclined plane 10325;
the inner side of the telescopic tube 10321 is provided with a telescopic groove, the diameter of the inner side of the telescopic tube 10321 is matched with the diameter of the second limiting ring 10327, the diameter of an opening at one side of the inner side of the telescopic tube 10321 is matched with the diameter of the side surface of the telescopic column 10326, the diameter of the outer side of the partition plate 10323 is matched with the diameter of the inner side of the telescopic tube 10321, the diameter of the inner side of the partition plate 10323 is matched with the diameter of the telescopic column 10326, the third inclined surface 10325 is matched with the connecting inclined surface 1033, the diameter of the inner side of the positioning cap 10324 is matched with the diameter of the outer side of the telescopic tube 10321, the inner side of the telescopic ring 1031 is fixedly connected with the outer side of the first telescopic tube 1023, the positioning cap 10324 is fixedly connected with the telescopic ring 1031 at one side;
in the process that the expansion joint is subjected to pressure increase and temperature increase, the two expansion ring plates 1031 are mutually far away, meanwhile, the second limiting ring 10327 is far away from the right side inside the expansion sleeve 10321, then the compression spring 10322 is compressed, meanwhile, the partition plate 10323 is close, the positioning cap 10324 and the expansion column 10326 extend out of the expansion sleeve 10321, so that after the expansion joint is compressed, the pressure and the temperature can be gradually reduced, after the external force of the expansion joint due to the temperature and the pressure disappears, the second limiting ring 10327 and the expansion column 10326 are pushed to the right side through the deformation force of the spring 10322, then the two expansion ring plates 1031 are combined, and meanwhile, the two first expansion tubes 1023 are driven to be close, so that the expansion joint assembly 1 can be prevented from being deformed due to temperature increase after the pressure and the temperature are reduced, the contraction value of the expansion joint can be smaller than the expansion value, namely, after the expansion joint is expanded and contracted for a long time, the normal expansion and contraction function can not be continuously ensured, the expansion joint is required to be replaced regularly, the phenomenon that the expansion joint cannot work normally due to the aging is avoided, and the equipment cannot work normally is influenced is avoided;
in particular, in this embodiment, the fit relationship between the diameter of the inside of the expansion groove of the expansion sleeve 10321 and the diameter of the second limit ring 10327 is tolerance fit, that is, the second limit ring 10327 can move relatively to the expansion sleeve 10321, that is, the embodiment does not particularly limit the specific tolerance value, that is, the fit relationship between the diameter of the opening on the inside of the expansion sleeve 10321 and the diameter of the side surface of the expansion post 10326 is tolerance fit, that is, the expansion post 10326 can move relatively to the expansion sleeve 10321, and that is, the expansion sleeve 10321 can fix the position of the expansion post 10326, that is, the embodiment does not particularly limit the tolerance value between the diameter of the opening on the inside of the expansion sleeve 10321 and the diameter of the side surface of the expansion post 10326, that is tolerance fit relationship between the diameter of the outside of the partition plate 10323 and the inside of the partition plate 10323 and the diameter of the expansion post 10326, that is, the partition plate 10323 can move relatively to the telescopic column 10326 and the inner wall of the telescopic tube 10321, that is, the tolerance value is not specifically limited, that is, the fit relationship between the third inclined plane 10325 and the connecting inclined plane 1033 is that the inclined planes can be mutually attached, the fit relationship between the diameter of the inner side of the positioning cap 10324 and the diameter of the outer side of the telescopic tube 10321 is that the tolerance fit is that the connecting manner between the inner side of the telescopic ring plate 1031 and the outer side of the first telescopic tube 1023 can be welding, riveting or fixing by other manners, that is, the fixed connection between the first inclined plane 1024 and the inner wall of the expansion joint main body 101 is completed and the sealing is ensured, that is, the embodiment only limits the connecting manner, but does not specifically limit the connecting manner.
Referring to fig. 10-14, the invention provides a bellows, the outer side of a fixed pipe orifice 2 is fixedly sleeved with a telescopic pipe assembly 3, the telescopic pipe assembly 3 comprises a second telescopic pipe 301, one side of the interior of the second telescopic pipe 301 is movably connected with a third limiting ring 306, the other side of the third limiting ring 306 is fixedly connected with a third telescopic pipe 305, the other side of the interior of the second telescopic pipe 301 is fixedly connected with a positioning ring plate 307, one side of the second telescopic pipe 301 and the other side of the third telescopic pipe 305 are fixedly connected with a flange 302, one side of the flange 302 is fixedly connected with a first sealing groove 303, and one side of the flange 302 is positioned at the inner side of the first sealing groove 303 and is fixedly connected with a second sealing groove 304;
the side wall of the second telescopic pipe 301 is provided with a telescopic groove, the cross section size of the inside of the telescopic groove of the second telescopic pipe 301 is matched with the cross section size of the third limiting ring 306, the interval of the cross section of the positioning ring plate 307 is matched with the thickness of the third telescopic pipe 305, the interval between the first sealing groove 303 and the second sealing groove 304 is the same as the width of the sealing strip, and the side face of the flange 302 is provided with a fixing hole;
meanwhile, the third limiting ring 306 is far away from the left side inside the second telescopic pipe 301, the telescopic pipe assembly 3 is integrally elongated, the telescopic pipe assembly 3 is elongated along with expansion of the expansion joint, and in the expansion joint elongation process, the expansion joint can be effectively set off by the inner side of the telescopic pipe assembly 3, so that the phenomenon that the expansion joint cannot normally stretch due to the weight of the expansion joint and the sagging of liquid flowing inside the expansion joint, and the expansion joint cannot normally reduce the temperature and the pressure of equipment through the expansion is avoided.
The working principle of the invention is as follows: in the process that the expansion joint is subjected to pressure increase and temperature increase, the included angle inside the expansion joint main body 101 is increased due to pressure and temperature change, namely the expansion joint assembly 1 begins to expand, meanwhile, two first telescopic pipes 1023 inside each expansion joint main body 101 are mutually far away to leak out a ring pipe 1021, the inner wall of the expansion joint is relatively smooth in the process that the expansion joint works, liquid can not be stored at a V-shaped position inside the expansion joint due to flowing of the liquid, the situation that the expansion joint is shortened in service life due to the fact that a large amount of liquid is stored at the V-shaped position after the expansion joint is finished is avoided, meanwhile, two telescopic ring plates 1031 are driven to be far away from each other, meanwhile, a second limiting ring 10327 is far away from the right side inside the telescopic pipe 10321, then a spring 10322 is compressed, meanwhile, a positioning cap 10324 and a telescopic column 26 are extended out of the telescopic pipe 10321, meanwhile, a third limiting ring 306 is far away from the left side inside the second telescopic pipe 301, the expansion sleeve component 3 is integrally elongated, the expansion sleeve component 3 is effectively set at the inner side of the expansion sleeve component 3 in the process of the expansion joint elongation, the phenomenon that the expansion joint cannot normally expand and contract due to the weight of the expansion joint and the sagging of liquid flowing in the expansion joint is avoided, the expansion joint cannot normally reduce the temperature and the pressure born by the equipment through expansion is avoided, after the equipment works, the pressure and the temperature can gradually decrease, after the expansion joint disappears due to the external force of the temperature and the pressure, the second limiting ring 10327 and the expansion column 10326 are pushed to the right side through the deformation force of the spring 10322, the two expansion ring plates 1031 are combined, the two first expansion pipes 1023 are simultaneously driven to be close, impurities adsorbed on the inner wall of the ring pipe 1021 are removed through the second inclined plane 1025 in the process of closing, the first expansion component 102 can normally contract in the next working, and simultaneously, the included angle of the inner wall of the expansion joint main body 101 is restored to the original position, and then the second expansion pipe 301 and the third expansion pipe 305 are pulled back to the original position, so that before the expansion joint assembly 1 can shrink to deform after the pressure and the temperature are reduced, the deformation of the expansion joint caused by the temperature rise is avoided, the shrinkage value of the expansion joint can be smaller than the expansion value, namely, the expansion joint can lose the normal expansion and shrinkage function after being expanded and shrunk for a long time, the safe and reliable operation of equipment cannot be continuously ensured, and therefore, the expansion joint needs to be replaced regularly, and the phenomenon that the normal operation cannot be performed and the safe operation of the equipment is influenced due to the aging of the expansion joint is avoided.
Finally: the foregoing is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (8)
1. Bellows expansion joint, including expansion joint subassembly (1), its characterized in that: the expansion joint comprises an expansion joint assembly (1), wherein fixed pipe orifices (2) are fixedly connected to the two sides of the expansion joint assembly (1), the expansion joint assembly (1) comprises an expansion joint main body (101), a first expansion assembly (102) is fixedly connected to the inner side of the expansion joint main body (101), the first expansion assembly (102) comprises a ring pipe (1021), first limiting rings (1022) are fixedly connected to the two sides of the ring pipe (1021), two first telescopic pipes (1023) are movably connected to the outer sides of the ring pipe (1021), first inclined planes (1024) are formed in the two sides of the first telescopic pipes (1023), and second inclined planes (1025) are formed in the inner sides of the two first telescopic pipes (1023); the telescopic pipe is characterized in that a telescopic pipe assembly (3) is fixedly sleeved on the outer side of the fixed pipe orifice (2), the telescopic pipe assembly (3) comprises a second telescopic pipe (301), a third limiting ring (306) is movably connected to one side of the inner portion of the second telescopic pipe (301), a third telescopic pipe (305) is fixedly connected to the other side of the third limiting ring (306), a positioning ring plate (307) is fixedly connected to the other side of the inner portion of the second telescopic pipe (301), a flange (302) is fixedly connected to one side of the second telescopic pipe (301) and the other side of the third telescopic pipe (305), a first sealing groove (303) is fixedly connected to one side of the flange (302), and a second sealing groove (304) is fixedly connected to the inner side of the first sealing groove (303).
2. A bellows expansion joint according to claim 1, wherein: the outside fixedly connected with second flexible subassembly (103) of first flexible subassembly (102), second flexible subassembly (103) are including flexible ring board (1031), one side fixedly connected with resilience subassembly (1032) of flexible ring board (1031), connection inclined plane (1033) have been seted up to one side of flexible ring board (1031), resilience subassembly (1032) include flexible sleeve (10321), one side fixedly connected with spring (10322) of flexible sleeve (10321) inside, opposite side fixedly connected with division board (10323) of spring (10322), opposite side fixedly connected with second spacing ring (10327) of the inside opposite side spring (10322) of flexible sleeve (10321), one side fixedly connected with jack post (10326) of second spacing ring (10327), third inclined plane (10325) have been seted up to the opposite side of jack post (10324).
3. A bellows expansion joint according to claim 1, wherein: the sliding groove is formed in the inner side of the first telescopic pipe (1023), the section size of the sliding groove of the first telescopic pipe (1023) is matched with the side size of the first limiting ring (1022), and the section size of the opening of the sliding groove of the first telescopic pipe (1023) is matched with the section size of the annular pipe (1021).
4. A bellows expansion joint according to claim 1, wherein: the angle of the first inclined plane (1024) is matched with the inclined plane angle of the inner side of the expansion joint main body (101), the inclined angle of the second inclined plane (1025) is forty-five degrees, and the first inclined plane (1024) of the first telescopic pipe (1023) is fixedly connected with the inner side of the expansion joint main body (101).
5. A bellows expansion joint according to claim 2, wherein: the inside of telescopic tube (10321) has seted up the flexible groove, the inside diameter of telescopic tube (10321) flexible groove and the diameter of second spacing ring (10327) are mutually supported, the inside one side open-ended diameter of telescopic tube (10321) and the side diameter of flexible post (10326) are mutually supported, the diameter in division board (10323) outside and the inside diameter of telescopic tube (10321) are mutually supported, the inside diameter of division board (10323) and the diameter of flexible post (10326) are mutually supported, third inclined plane (10325) and connection inclined plane (1033) laminating mutually.
6. A bellows expansion joint according to claim 2, wherein: the diameter of the inner side of the positioning cap (10324) is matched with the diameter of the outer side of the telescopic tube (10321), the inner side of the telescopic ring plate (1031) is fixedly connected with the outer side of the first telescopic tube (1023), the positioning cap (10324) is fixedly connected with the telescopic ring plate (1031) on one side, and the telescopic tube (10321) is fixedly connected with the telescopic ring plate (1031) on the other side.
7. A bellows expansion joint according to claim 1, wherein: the side wall of the second telescopic pipe (301) is provided with a telescopic groove, the cross section size of the inside of the telescopic groove of the second telescopic pipe (301) is matched with the cross section size of the third limiting ring (306), the interval of the cross section of the positioning ring plate (307) is matched with the thickness of the third telescopic pipe (305), the interval between the first sealing groove (303) and the second sealing groove (304) is the same as the width of the sealing strip, and the side face of the flange (302) is provided with a fixing hole.
8. A bellows, characterized in that: comprising a bellows expansion joint according to any of the claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311414364.XA CN117146089B (en) | 2023-10-30 | 2023-10-30 | Bellows expansion joint and bellows thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311414364.XA CN117146089B (en) | 2023-10-30 | 2023-10-30 | Bellows expansion joint and bellows thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117146089A CN117146089A (en) | 2023-12-01 |
| CN117146089B true CN117146089B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311414364.XA Active CN117146089B (en) | 2023-10-30 | 2023-10-30 | Bellows expansion joint and bellows thereof |
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| CN (1) | CN117146089B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB880082A (en) * | 1959-01-26 | 1961-10-18 | Yuba Cons Ind Inc | Expansion joints, for example, for pipe-lines |
| KR200379478Y1 (en) * | 2004-10-12 | 2005-03-18 | 해조산업(주) | Metallic expansion joint for steam and oil pipe line of tanker |
| KR20140001510U (en) * | 2012-09-03 | 2014-03-12 | 엘에스산전 주식회사 | Bellows support apparatus for gas insulated switchgear |
| KR20180086064A (en) * | 2017-01-20 | 2018-07-30 | 한양대학교 에리카산학협력단 | Device for connecting Expansion Pipe |
| CN212840041U (en) * | 2020-06-04 | 2021-03-30 | 江苏奥马机械有限公司 | Expansion joint of air cooling system |
| CN212900344U (en) * | 2020-08-14 | 2021-04-06 | 南京晨光东螺波纹管有限公司 | High-speed traffic pipeline expansion joint |
| CN219755704U (en) * | 2023-04-07 | 2023-09-26 | 江苏东升机械制造有限公司 | High-stability transverse expansion joint |
-
2023
- 2023-10-30 CN CN202311414364.XA patent/CN117146089B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB880082A (en) * | 1959-01-26 | 1961-10-18 | Yuba Cons Ind Inc | Expansion joints, for example, for pipe-lines |
| KR200379478Y1 (en) * | 2004-10-12 | 2005-03-18 | 해조산업(주) | Metallic expansion joint for steam and oil pipe line of tanker |
| KR20140001510U (en) * | 2012-09-03 | 2014-03-12 | 엘에스산전 주식회사 | Bellows support apparatus for gas insulated switchgear |
| KR20180086064A (en) * | 2017-01-20 | 2018-07-30 | 한양대학교 에리카산학협력단 | Device for connecting Expansion Pipe |
| CN212840041U (en) * | 2020-06-04 | 2021-03-30 | 江苏奥马机械有限公司 | Expansion joint of air cooling system |
| CN212900344U (en) * | 2020-08-14 | 2021-04-06 | 南京晨光东螺波纹管有限公司 | High-speed traffic pipeline expansion joint |
| CN219755704U (en) * | 2023-04-07 | 2023-09-26 | 江苏东升机械制造有限公司 | High-stability transverse expansion joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117146089A (en) | 2023-12-01 |
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