CN113738988B - Detachable expansion joint - Google Patents
Detachable expansion joint Download PDFInfo
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- CN113738988B CN113738988B CN202111302732.2A CN202111302732A CN113738988B CN 113738988 B CN113738988 B CN 113738988B CN 202111302732 A CN202111302732 A CN 202111302732A CN 113738988 B CN113738988 B CN 113738988B
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- pipe
- flange
- connecting pipe
- assembly
- expansion joint
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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
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present application provides a collapsible expansion joint. The detachable expansion joint comprises a long connecting pipe, an external connecting pipe, a connecting pipe assembly and a corrugated pipe assembly, wherein the external connecting pipe is sleeved on the outer side of the long connecting pipe; the first end of the pipe connecting component is used for connecting a pipeline to be connected, the second end of the pipe connecting component extends into the external connecting pipe and is inserted into the first end of the long connecting pipe, the second end of the long connecting pipe is used for connecting the pipeline to be connected, and the pipe connecting component is connected with a flange at the first end of the external connecting pipe; the corrugated pipe assembly is sleeved on the outer side of the long connecting pipe and arranged between the external connecting pipe and the long connecting pipe, the first end of the corrugated pipe assembly is connected with the first end flange of the long connecting pipe, and the second end of the corrugated pipe assembly is connected with the second end flange of the external connecting pipe. The expansion joint applied to the technical field of high precision is a split structure, when the expansion joint is cracked or damaged locally, the expansion joint can be disassembled locally and quickly, and the use cost is reduced.
Description
Technical Field
The application relates to the field of expansion joint equipment, in particular to a detachable expansion joint.
Background
The expansion joint is a flexible structure provided on the vessel shell or pipe in order to compensate for dimensional changes of the pipe or equipment due to temperature differences and mechanical vibrations.
In the prior art, when the expansion joint is applied to high-precision technical fields such as precision instruments, aviation, aerospace, navigation, national defense, nuclear power, metallurgy and the like, the expansion joint is required to have higher precision, and the cost of the expansion joint applied to the high-precision technical field is higher. However, in the case of the expansion joint integrated structure which is currently used in the high precision technology field, when a crack or a breakage occurs in a part of the expansion joint, the entire expansion joint needs to be replaced, which leads to an increase in the use cost of the expansion joint.
The above technical problem needs to be further solved.
Disclosure of Invention
In view of above-mentioned problem, the application provides a detachable expansion joint, can solve and can't comparatively convenient disassemble each pressure-bearing structure spare, increase cost scheduling problem.
The application provides a collapsible expansion joint, includes:
the long connecting pipe and the external connecting pipe are sleeved outside the long connecting pipe;
the first end of the pipe connecting component is used for connecting a pipeline to be connected, the second end of the pipe connecting component extends into the first end of the external pipe and extends into the first end of the long connecting pipe, the second end of the long connecting pipe is used for connecting the pipeline to be connected, and a flange of the pipe connecting component is connected with a flange of the first end of the external pipe;
the corrugated pipe assembly is sleeved on the outer side of the long connecting pipe and arranged between the external connecting pipe and the long connecting pipe, the first end of the corrugated pipe assembly is connected with the first end flange of the long connecting pipe, and the second end of the corrugated pipe assembly is connected with the second end flange of the external connecting pipe.
In the technical scheme of this application embodiment, the first end of connecting pipe subassembly is used for linking to each other with treating the connecting pipe welding or flange joint, the second end is connected with the first end flange joint of external pipe, can be fast with external pipe and connecting pipe subassembly disassembling, the first end flange joint of long takeover and bellows subassembly, can disassemble long takeover and the first end of bellows subassembly fast, the second end of long takeover links to each other with treating the connecting pipe welding or flange joint, the second end of bellows subassembly and the second end flange joint of external pipe, can disassemble the second end of bellows subassembly with the second end of external pipe fast.
In some embodiments, the connecting pipe assembly comprises a first connecting pipe and a flow guide pipe which are connected in series, wherein one end of the first connecting pipe, which is far away from the flow guide pipe, is used for connecting a pipeline to be connected, and one end of the flow guide pipe, which is far away from the first connecting pipe, is inserted into the first end of the long connecting pipe.
The first end of the first connecting pipe is connected with a pipeline to be connected in a welding mode or in a flange mode, the second end of the first connecting pipe is fixedly connected with the first end of the flow guide pipe, and the second end of the flow guide pipe is inserted into the first end of the long connecting pipe.
In some embodiments, the bellows assembly comprises: the second connecting pipe, the at least two corrugated pipe single bodies, the at least one middle pipe and the third connecting pipe are arranged;
the at least two corrugated pipe single bodies are sequentially connected in series, two adjacent corrugated pipe single bodies are connected through a middle pipe, the first end of the second connecting pipe is connected with the flange at the first end of the corrugated pipe assembly, and the second end of the second connecting pipe is connected with the first ends of the at least two corrugated pipe single bodies which are connected in series; the first end of the third connecting pipe is connected with the second ends of the at least two corrugated pipe single bodies which are connected in series, and the second end of the third connecting pipe is connected with a flange at the second end of the corrugated pipe assembly;
wherein, the outer wall of the middle pipe is provided with a guide plate;
or, the bellows assembly comprises: the second connecting pipe, the corrugated pipe single body and the third connecting pipe;
the first end of the second connecting pipe is connected with the flange at the first end of the corrugated pipe assembly, and the second end of the second connecting pipe is connected with the first end of the corrugated pipe single body; and the first end of the third connecting pipe is connected with the second end of the corrugated pipe monomer, and the second end of the third connecting pipe is connected with the flange at the second end of the corrugated pipe component.
When the corrugated pipe assembly is provided with at least two corrugated pipe monomers, the corrugated pipe monomers cannot be directly connected, so that an intermediate pipe is welded between every two adjacent corrugated pipe monomers to connect the corrugated pipe monomers, a guide plate is arranged on the intermediate pipe, in order to enable the corrugated pipe assembly to move only along the direction of a center line, a second connecting pipe and a third connecting pipe are respectively welded at two ends of the corrugated pipe monomers which are connected in series, and the second connecting pipe and the third connecting pipe are respectively welded with flanges at two ends of the corrugated pipe assembly;
when the corrugated pipe assembly is provided with a corrugated pipe single body, two ends of the corrugated pipe single body are respectively welded with the second connecting pipe and the third connecting pipe, and the second connecting pipe and the third connecting pipe are respectively welded with flanges at two ends of the corrugated pipe assembly.
In some embodiments, an observation window is arranged on the tube wall of the external connection tube, so that the external connection tube forms a partially transparent observation structure;
or the external pipe is a quartz pipe, so that the external pipe forms a whole perspective observation structure, and a hollow external protection pipe is arranged outside the quartz pipe.
The external connecting pipe is provided with an observation window which can judge whether the structural member in the expansion joint is intact or not and check whether solid matters are deposited in the expansion joint or among the corrugations of the corrugated pipe or not; the external pipe is the quartz capsule, can accomplish the expansion joint inside completely visual like this, and inside the observation expansion joint that can be better, set up the outer pillar protection quartz capsule of fretwork.
In some embodiments, the collapsible expansion joint further comprises:
the connecting and fixing assembly comprises a fixing flange and a pull rod, the fixing flange is sleeved on the long connecting pipe, and the fixing flange is connected with a flange at the second end of the outer connecting pipe through a first bolt;
the pull rod is fixedly connected with one side of the second end of the outer connecting pipe, which is deviated from the fixed flange;
the flange of the second end of the external connecting pipe extends into the pipe to form a connecting part, and the connecting and fixing assembly and the second end of the corrugated pipe assembly sequentially penetrate through the fixing flange, the connecting part and the flange of the second end of the corrugated pipe assembly through a second bolt.
The pull rod links to each other with the mounting flange welding, the pull rod can stimulate the expansion joint main part and remove, mounting flange links to each other through first bolt with the second end of managing outward, the second bolt passes mounting flange earlier, pass the flange of managing the second end outward again, pass the flange of bellows subassembly second end at last, the flange of managing the second end outward all is provided with arch and recess with the flange of bellows subassembly second end, arch and groove joint, protruding joint department with the recess all is provided with sealing material, it is sealed when making to connect mounting assembly and external pipe and bellows subassembly flange joint like this.
In some embodiments, connect fixed subassembly including first clamping ring, second clamping ring, first clamping ring cover is in the outside of long takeover, the first end fixed connection of first clamping ring is in flange is last, fixed connection on the inner wall of first clamping ring second end the second clamping ring, the second clamping ring cover is in on the pipe wall outside of long takeover, first clamping ring with add graphite packing in the clearance of long takeover.
Set up first clamping ring welding on long takeover, add graphite packing in the clearance of first clamping ring and long takeover, set up the second clamping ring and compress tightly graphite packing, the first end and the mounting flange fixed connection of first clamping ring, the second end and the second clamping ring fixed connection of first clamping ring for it is sealed with outer takeover junction with long takeover to connect fixed subassembly.
In some embodiments, sealing structures are arranged between the flange of the joint pipe assembly and the flange of the first end of the external joint pipe, between the flange of the first end of the corrugated pipe assembly and the flange of the first end of the long joint pipe, and between the flange of the second end of the corrugated pipe assembly and the flange of the second end of the external joint pipe;
the sealing structure comprises a protrusion and a groove which are arranged on the opposite end surfaces of two connected flanges, the protrusion is matched with the groove, and a sealing material is clamped between the protrusion and the groove.
All be provided with arch and recess on the flange of joint department, link to each other through arch and recess joint between the flange, joint department all sets up sealing material, and flange joint department is sealed for the expansion joint reaches sealed effect.
In some embodiments, the collapsible expansion joint further comprises:
the transportation adjusting assembly is sleeved on the outer side of the pipe wall of the second end of the long connecting pipe and comprises two semicircular clamps and an ear plate, clamping grooves are formed in the two clamps, the two clamps are detachably connected, the ear plate is clamped with the clamping grooves, and ear plate holes are formed in the ear plate;
the pull rod penetrates through the lug plate hole to be fixedly connected with the fixed flange, and the pull rod is detachably connected with the lug plate.
The transportation adjusting assembly is connected with the long connecting pipe by adopting a fixture structure and can be detached according to the field condition. The transportation adjusting assembly can also be used for assisting the main structure assembly of the expansion joint to be disassembled and assembled, and the clamp structure is that two semicircular clamps are detachably connected and sleeved on the outer wall of the long connecting pipe, so that the disassembly is convenient; the clamping grooves are formed in the clamping devices and clamped with the lug plates, disassembly is convenient, the pull rod is detachably connected with the lug plates, and the expansion joint main body is conveniently stretched by adjusting the pull rod.
In some embodiments, the collapsible expansion joint further comprises:
the endoscope penetrates through the second compression ring and the graphite packing and is arranged in the bottom space of the corrugated pipe assembly and the long connecting pipe, a terminal interface is arranged on the long connecting pipe at a position close to the second end of the long connecting pipe, and the terminal interface is connected with the endoscope;
wherein, the endoscope is a waterproof endoscope with illumination.
The endoscope is additionally arranged, so that the condition of the inner cavity of the expansion joint can be better observed, the terminal interface is arranged and is connected with the endoscope and a mobile phone or a computer, and whether the condition of the inner cavity of the expansion joint leaks or not is judged by observing the condition of the inner cavity of the expansion joint through the endoscope for controlling the inner cavity; the endoscope is a waterproof endoscope with illumination, and observation is more convenient.
In some embodiments, the collapsible expansion joint further comprises:
and the first end of the displacement sensor is fixed on a flange at the second end of the corrugated pipe assembly, and the second end of the displacement sensor is connected to the lug plate.
And a displacement sensor is additionally arranged, so that the actual compensation quantity of the expansion joint can be obtained in real time.
Compared with the prior art, the application provides a pair of dismountable expansion joint, the part structure that damages on the expansion joint can be comparatively convenient change, can be through dismantling the flange joint structure between each subassembly of expansion joint, comparatively quick each subassembly split of expansion joint is come, the subassembly that will damage is changed, other undamaged subassembly clean up, assemble each subassembly again, can save the maintenance like this, the time of changing the expansion joint, the improvement maintenance, the efficiency of changing the expansion joint, practice thrift pipeline operation cost.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a schematic view of a collapsible expansion joint;
FIG. 2 is a schematic view of the connection of the spud to the first end of the bellows assembly;
FIG. 3 is a schematic diagram illustrating a first view of the connection of the extension tube assembly to the first end of the extension tube;
FIG. 4 is a second perspective view of the connection of the extension tube assembly to the first end of the extension tube;
FIG. 5 is a schematic view of the connection of the extension tube assembly to the second end of the bellows assembly;
FIG. 6 is a schematic structural view of the junction block assembly;
FIG. 7 is a schematic structural view of a bellows assembly;
FIG. 8 is a schematic structural view of an external connection tube with an observation window;
FIG. 9 is a schematic structural view of the external connection tube being a quartz tube;
FIG. 10 is a detail view of a disassembled expansion joint in part number;
FIG. 11 is an enlarged view of portion A of FIG. 10;
FIG. 12 is an enlarged view of portion B of FIG. 10;
FIG. 13 is an enlarged view of portion C of FIG. 10;
FIG. 14 is a schematic structural diagram of the connection of the long adapter tube, the external adapter tube and the connection fixing assembly;
FIG. 15 is a schematic view of the transport adjustment assembly;
FIG. 16 is a schematic view of the structure of the fixture;
the reference numbers illustrate:
the pipe connecting component 1, a first connecting pipe 101, a guide pipe 102 and a first flange 103;
an external connecting pipe 2, a second flange 201 and a sixth flange 202;
a long adapter 3 and a third flange 301;
the corrugated pipe assembly 4 comprises a corrugated pipe single body 401, a second connecting pipe 402, a third connecting pipe 403, a fourth flange 404, a fifth flange 405, a middle pipe 406 and a guide plate 407;
the connecting and fixing assembly 5, a first pressing ring 501, a second pressing ring 502, a pull rod 503, a fixing flange 504 and a graphite packing 505;
the transportation adjusting assembly 6, the clamp 601, the clamping groove 6011, the ear plate 602 and the ear plate hole 6021;
an endoscope 7; a terminal interface 8; a displacement sensor 9; an observation window 10; and a sealing material 11.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
As shown in fig. 1-5, according to some embodiments of the present application, there is provided a collapsible expansion joint comprising: the long connecting pipe 3, the external connecting pipe 2, the connecting pipe component 1 and the corrugated pipe component 4; the external connecting pipe 2 is sleeved outside the long connecting pipe 3; the first end of the pipe connecting component 1 is used for connecting a pipeline to be connected, the second end of the pipe connecting component 1 extends into the first end of the external pipe 2 and extends into the first end of the long connecting pipe 3, the second end of the long connecting pipe 3 is used for connecting the pipeline to be connected, and a flange of the pipe connecting component 1 is connected with a flange of the first end of the external pipe 2; the corrugated pipe assembly 4 is sleeved on the outer side of the long connecting pipe 3 and arranged between the outer connecting pipe 2 and the long connecting pipe 3, the first end of the corrugated pipe assembly 4 is connected with the first end flange of the long connecting pipe 3, and the second end of the corrugated pipe assembly 4 is connected with the second end flange of the outer connecting pipe 2.
As shown in fig. 2, specifically, the third flange 301 at the first end of the long adapter 3 is flange-connected with the fourth flange 404 at the first end of the bellows assembly 4, and the second end of the long adapter 3 is used for being welded or flange-connected with the pipeline to be connected; when the connected pipeline is heated, the pipeline can be extended and transmitted to the long connecting pipe 3, so that the long connecting pipe 3 moves to the end far away from the connection end of the long connecting pipe 3 and the pipeline, the corrugated pipe assembly 4 is extended, the expansion joint is compressed, and the thermal expansion length of the pipeline system is absorbed; when the connected pipeline is shortened in case of cold, the shortened pipeline is transmitted to the long connecting pipe 3, so that the long connecting pipe 3 moves close to one end of the long connecting pipe 3 connected with the pipeline, the corrugated pipe assembly 4 contracts, and the cold contraction length of the pipeline system is compensated.
As shown in fig. 3, 4 and 5, the second flange 201 of the first end of the extension pipe 2 is flange-connected with the first flange 103 of the first end of the pipe joint assembly 1; the sixth flange 202 at the second end of the extension tube 2 is flanged to the fifth flange 405 at the second end of the bellows assembly 4.
Set up the main component in the expansion joint into flange joint, convenient to use can bear great pressure, can be through dismantling the flange joint structure between each subassembly of expansion joint, comparatively quick with each subassembly split of expansion joint, the subassembly that will damage is changed, other undamaged subassembly clean up is reassembled each subassembly again.
As shown in fig. 6, according to some embodiments of the present application, optionally, a first end of the pipe connecting assembly 1 is provided with a first connecting pipe 101, a second end of the first connecting pipe 101 is provided with a flow guide pipe 102, the first end of the first connecting pipe 101 is used for connecting a pipe to be connected, the second end of the first connecting pipe 101 is connected with the first end of the flow guide pipe 102, and the second end of the flow guide pipe 102 is inserted into the first end of the long connecting pipe 3.
The first end of the first connecting pipe 101 is used for welding connection or flange connection of pipelines to be connected, the second end of the first connecting pipe 101 is welded with the first end of the flow guide pipe 102, the second end of the first connecting pipe 101 is welded with the first flange 103, the pipe diameter of the flow guide pipe 102 is smaller than that of the first connecting pipe 101 and the long connecting pipe 3, and the second end of the flow guide pipe 102 is inserted into the first end of the long connecting pipe 3 by 20-30 mm.
As shown in fig. 7, further according to some embodiments of the present application, the bellows assembly 4 includes: a second connection pipe 402, at least two bellows units 401, at least one intermediate pipe 406, and a third connection pipe 403; the at least two corrugated pipe single bodies 401 are sequentially connected in series, two adjacent corrugated pipe single bodies 401 are connected through a middle pipe 406, a first end of the second connecting pipe 402 is connected with a flange at a first end of the corrugated pipe assembly 4, and a second end of the second connecting pipe 402 is connected with first ends of the at least two corrugated pipe single bodies 401 which are connected in series; a first end of the third connecting pipe 403 is connected to second ends of the at least two bellows units 401 connected in series, and a second end of the third connecting pipe 403 is connected to a flange at a second end of the bellows assembly 4; wherein, the outer wall of the middle pipe 406 is provided with a guide plate 407;
or, the bellows assembly 4 comprises: a second adapter 402, a bellows monomer 401, and a third adapter 403; a first end of the second adapter tube 402 is connected with a flange at a first end of the bellows assembly 4, and a second end of the second adapter tube 402 is connected with a first end of the bellows unit 401; a first end of the third adapter tube 403 is connected to a second end of the bellows unit 401, and a second end of the third adapter tube 403 is connected to a flange at a second end of the bellows assembly 4.
In this embodiment, two bellows monomers 401 are provided as an example, the bellows assembly 4 is composed of a second connection pipe 402, a first bellows monomer 401, a middle pipe 406, a second bellows monomer 401 and a third connection pipe 403 which are connected in sequence, the two bellows monomers 401 are connected in series in sequence, the middle pipe 406 is fixedly connected between the two bellows monomers 401, a first end of the second connection pipe 402 is fixedly connected with a fourth flange 404 at a first end of the bellows assembly 4, and a second end of the second connection pipe 402 is fixedly connected with first ends of the two bellows monomers 401 which are connected in series; a first end of the third connection pipe 403 is fixedly connected to second ends of the two serially connected bellows units 401, and a second end of the third connection pipe 403 is fixedly connected to a fifth flange 405 of a second end of the bellows assembly 4, where the fixed connection may be welding or the like.
The bellows single bodies 401 can not be directly connected, the middle pipe 406 is arranged to fixedly connect the two bellows single bodies 401, the guide plate 407 is arranged on the outer wall of the middle pipe 406, the guide plate 407 is arranged to enable the bellows assembly 4 to move along the direction of the center line, the bellows assembly 4 is prevented from moving randomly between the outer connecting pipe 2 and the long connecting pipe 3, and the bellows single bodies 401 are flexible pieces and can be extended or compressed, so that the expansion joint is extended or contracted to compensate the length change of a pipeline system.
According to some embodiments of the present application, as shown in fig. 8 and 9, optionally, an observation window 10 is disposed on a tube wall of the external tube 2, so that the external tube 2 forms a partially see-through observation structure;
or, the external connecting pipe 2 is a quartz pipe, so that the external connecting pipe 2 forms a whole perspective observation structure, and a hollow external protecting pipe is arranged outside the quartz pipe.
As shown in fig. 8, the observation window 10 is arranged on the wall of the external connecting pipe 2, so that whether the structural member in the expansion joint is intact or not can be conveniently judged, and whether solid matters are deposited in the expansion joint or among the corrugations of the corrugated pipe assembly 4 or not can be checked; wherein, the observation window 10 can be welded on the pipe wall of the external pipe 2 or detachably mounted on the pipe wall of the external pipe 2 through a bolt, and the observation window 10 can be made of high temperature resistant and light transmission materials such as quartz plates.
As shown in fig. 9, when the caliber of the expansion joint is less than DN250 and the design pressure is less than 1.6MPa, the quartz tube is used as the external connection tube 2, and a layer of detachable hollow external protection tube is added outside the quartz tube, so that the inside of the expansion joint can be completely visible, whether the structural member in the expansion joint is intact can be judged more visually, and whether solid matter is deposited in the expansion joint or between corrugations of the corrugated pipe can be checked.
Through increasing observation window 10, or adopt transparent quartz tube structure as external pipe 2, can observe the motion condition of bellows subassembly 4 in the expansion joint, can observe whether unstability or other to the expansion joint use harmful condition appear in bellows subassembly 4, judge whether expansion joint main part structure needs to be changed.
As shown in fig. 1 and 14, according to some embodiments of the present application, optionally, the collapsible expansion joint further comprises: the connecting and fixing component 5, the connecting and fixing component 5 includes a fixing flange 504 and a pull rod 503, the fixing flange 504 is sleeved on the long connecting pipe 3, and the fixing flange 504 is connected with the second end of the outer connecting pipe 2 through a first bolt; the pull rod 503 is fixedly connected with the fixed flange 504; the connection fixing assembly 5 and the second end of the bellows assembly 4 sequentially penetrate through the fixing flange 504, the flange at the second end of the external connecting pipe 2 and the flange at the second end of the bellows assembly 4 through a second bolt, and the flange at the second end of the external connecting pipe 2 extends inwards.
The first end of the fixing flange 504 is connected to the sixth flange 202 of the outer connecting pipe 2, and the second end is fixedly connected to the pull rod 503, wherein the pull rod 503 and the fixing flange 504 may be welded, so that the pull rod 503 may pull the expansion joint body to move, as shown in fig. 13, the second end of the connecting and fixing assembly 5 and the second end of the bellows assembly 4 first pass through the fixing flange 504, the sixth flange 202 of the second end of the outer connecting pipe 2, and the fifth flange 405 of the second end of the bellows assembly 4 by a second bolt to be connected, and the second end of the connecting and fixing assembly 5 and the second end of the outer connecting pipe 2 and the second end of the bellows assembly 4 are connected to form a sealing structure.
As shown in fig. 1, 10, and 14, according to some embodiments of the present application, optionally, the connection fixing assembly 5 further includes: first clamping ring 501, second clamping ring 502, first clamping ring 501 cover is in the outside of long takeover 3, the first end fixed connection of first clamping ring 501 is in on mounting flange 504, fixed connection on the inner wall of first clamping ring 501 second end second clamping ring 502, second clamping ring 502 overlaps and is in on the pipe wall outside of long takeover 3, first clamping ring 501 with add graphite packing 505 in the clearance of long takeover 3.
First clamping ring 501 is sleeved on the outer side of long connecting pipe 3, the first end of first clamping ring 501 is fixedly connected with fixing flange 504, graphite packing 505 is added in a gap between the first clamping ring 501 and long connecting pipe 3 for welding and the like, second clamping ring 502 is used for compressing graphite packing 505, then second clamping ring 502 is fixed with first clamping ring 501 for welding and the like, the inner ring of second clamping ring 502 is tightly attached to the outer wall of long connecting pipe 3, and the outer ring of second clamping ring 502 is tightly attached to the inner wall of first clamping ring 501.
Set up and connect fixed subassembly 5, play fixed and auxiliary action, can utilize pull rod 503 to draw and draw the expansion joint main part, add graphite packing 505 in the clearance of first clamping ring 501 and long takeover 3, add graphite packing 505 and compress tightly graphite packing 505 with second clamping ring 502, later with second clamping ring 502 welding on first clamping ring 501, reach sealed effect.
As shown in fig. 10, according to some embodiments of the present application, optionally, sealing structures are disposed between the flange of the extension pipe assembly 1 and the flange of the first end of the external connection pipe 2, between the flange of the first end of the bellows assembly 4 and the flange of the first end of the long connection pipe 3, and between the flange of the second end of the bellows assembly 4 and the flange of the second end of the external connection pipe 2; the sealing structure is a bulge and a groove which are arranged on the opposite end surfaces of the two connected flanges, the bulge is matched with the groove, and a sealing material 11 is clamped between the bulge and the groove. The sealing effect can be achieved by providing a sealing material 11 at the flange connection.
As shown in fig. 11, the first end of the pipe connecting assembly 1 and the first end of the external connecting pipe 2 are connected by flanges, wherein bolts sequentially pass through the first flange 103 and the second flange 201, a groove is formed in the first flange 103, a protrusion is formed in the second flange 201, the groove is clamped with the protrusion, and a sealing material 11 is added at the clamping position, so that the sealing flange is formed at the first end of the pipe connecting assembly 1 and the first end of the external connecting pipe 2, wherein the sealing material 11 can be a sealing gasket and the like, and the groove is matched with the protrusion.
As shown in fig. 12, the first end of the long connection pipe 3 and the first end of the bellows assembly 4 are connected by a flange where a bolt sequentially penetrates through the third flange 301 and the fourth flange 404, the third flange 301 is provided with a groove, the fourth flange 404 is provided with a protrusion, the groove is clamped with the protrusion, and the clamping position is added with a sealing material 11, so that the first end of the external connection pipe 3 and the first end of the bellows assembly 4 form a sealed flange connection, wherein the sealing material 11 can be a sealing gasket or the like, and the groove is matched with the protrusion.
As shown in fig. 13, the second end of the connection fixing component 5 and the second end of the external connection pipe 2 sequentially penetrate through the fixing flange 504 and the sixth flange 202 to be connected through the first bolt, the second end of the connection fixing component 5 and the bellows component 4 is a flange connection in which the second bolt sequentially penetrates through the fixing flange 504, the sixth flange 202 and the fifth flange 405, the fifth flange 405 is provided with a protrusion, the sixth flange 202 is provided with a groove, the groove is clamped with the protrusion, and the sealing material 11 is added at the clamping position, so that the second end of the bellows component 4, the second end of the external connection pipe 2 and the connection fixing component 5 form a sealing structure, wherein the sealing material 11 can be a sealing gasket and the like, and the groove is matched with the protrusion.
As shown in fig. 1, 15, 16, according to some embodiments of the present application, optionally, the collapsible expansion joint further comprises: the transportation adjusting assembly 6 is sleeved on the outer side of the pipe wall of the second end of the long connecting pipe 3, the transportation adjusting assembly 6 comprises two semicircular clamps 601 and an ear plate 602, the two clamps 601 are provided with clamping grooves 6011, the two clamps 601 are detachably connected, the ear plate 602 is clamped with the clamping grooves 6011, and the ear plate 602 is provided with an ear plate hole 6021; the pull rod 503 passes through the ear plate hole 6021 to be fixedly connected with the fixed flange 504, and the pull rod 503 is detachably connected with the ear plate 602.
The transportation adjusting assembly 6 is of a detachable structure, the transportation adjusting assembly 6 is connected with the expansion joint main body through a clamp 601, and the ear plate 602 is inserted into the clamping groove 6011 on the clamp 601, so that the transportation adjusting assembly 6 can be reused and can be freely moved or detached on a pipeline according to the site.
As shown in fig. 10, according to some embodiments of the present application, optionally, the collapsible expansion joint further comprises: the endoscope 7, the endoscope 7 passes the second clamping ring 502 with graphite packing 505 sets up bellows subassembly 4 with in the bottom space of long takeover 3, long takeover 3 is being close to be provided with terminal interface 8 on the position of long takeover 3 second end, terminal interface 8 with the endoscope 7 links to each other, wherein, the endoscope 7 is from the waterproof endoscope 7 of taking the illumination.
The endoscope 7 is additionally arranged, the endoscope 7 is connected with the terminal interface 8, the terminal interface 8 is connected with a mobile phone or a computer, the condition of the inner cavity of the expansion joint can be watched in real time, whether a medium leaks from the inner cavity of the expansion joint can be conveniently observed, measures can be taken in time, and accidents are prevented.
The terminal equipment is connected with the terminal interface 8, and the endoscope 7 below the inside of the expansion joint can be used for observing whether medium substances exist in the expansion joint corrugated pipe assembly 4 and the long connecting pipe 3 assembly, judging whether leakage occurs inside the product, and judging whether the main structural part of the expansion joint needs to be replaced.
As shown in fig. 10, according to some embodiments of the present application, optionally, the collapsible expansion joint further comprises: and a displacement sensor 9, wherein a first end of the displacement sensor 9 is fixed on a flange at a second end of the bellows assembly 4, and a second end of the displacement sensor 9 is connected on the lug plate 602.
Add displacement sensor 9, displacement sensor 9's first end is fixed on the fifth flange 405 of bellows subassembly 4 second end, and the second end is connected on otic placode 602 for the expansion joint takes place to remove, can discover the very first time, can long-range real-time supervision expansion joint's actual offset, according to the data optimization expansion joint performance of gained, reduces the expansion joint and produces the waste on the property.
And (3) disassembling the expansion joint:
1. firstly, the bolts and nuts of the ear plate 602 and the pull rod 503 are disassembled, then the bolts and nuts at the joint of the two semicircular clamps 601 are disassembled, and further the transportation adjusting assembly 6 is disassembled;
2. a circle of nuts on the fixing flange 504 close to the first pressing ring 501 are disassembled;
3. the connecting nuts of the first flange 103 and the second flange 201 are disassembled, so that the connecting and fixing assembly 5 and the external connecting pipe 2 move towards the right side, and the connecting pipe assembly 1 can also move freely;
4. after the external connecting pipe 2 moves rightwards, the bolt and the nut on the third flange 301 and the fourth flange 404 are disassembled, and at the moment, the corrugated pipe assembly 4 can also move freely;
5. finally, the bolts and nuts on the sixth flange 202 and the fixing flange 504 are removed, so that the expansion joint is completely disassembled.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A collapsible expansion joint, comprising:
the long connecting pipe and the external connecting pipe are sleeved outside the long connecting pipe;
the first end of the pipe connecting component is used for connecting a pipeline to be connected, the second end of the pipe connecting component extends into the first end of the external pipe and extends into the first end of the long connecting pipe, the second end of the long connecting pipe is used for connecting the pipeline to be connected, and a flange of the pipe connecting component is connected with a flange of the first end of the external pipe;
the corrugated pipe assembly is sleeved on the outer side of the long connecting pipe and arranged between the external connecting pipe and the long connecting pipe, the first end of the corrugated pipe assembly is connected with the first end flange of the long connecting pipe, and the second end of the corrugated pipe assembly is connected with the second end flange of the external connecting pipe;
the connecting and fixing assembly comprises a fixing flange, a pull rod, a first compression ring and a second compression ring, the fixing flange is sleeved on the long connecting pipe, and the fixing flange is connected with a flange at the second end of the external connecting pipe through a first bolt;
the pull rod is fixedly connected with one side of the second end of the outer connecting pipe, which is deviated from the fixed flange;
the first pressing ring is sleeved on the outer side of the long connecting pipe, the first end of the first pressing ring is fixedly connected to the fixing flange, the second pressing ring is fixedly connected to the inner wall of the second end of the first pressing ring, the second pressing ring is sleeved on the outer side of the pipe wall of the long connecting pipe, and a graphite packing is added in a gap between the first pressing ring and the long connecting pipe;
the flange of the second end of the external connecting pipe extends into the pipe to form a connecting part, and the connecting and fixing assembly and the second end of the corrugated pipe assembly sequentially penetrate through the fixing flange, the connecting part and the flange of the second end of the corrugated pipe assembly through a second bolt.
2. The demountable expansion joint of claim 1, wherein the joint assembly comprises a first joint pipe and a flow guide pipe connected in series, wherein an end of the first joint pipe, which is far away from the flow guide pipe, is used for connecting a pipeline to be connected, and an end of the flow guide pipe, which is far away from the first joint pipe, is inserted into a first end of the long joint pipe.
3. The collapsible expansion joint of claim 1 wherein said bellows assembly comprises: the second connecting pipe, the at least two corrugated pipe single bodies, the at least one middle pipe and the third connecting pipe are arranged;
the at least two corrugated pipe single bodies are sequentially connected in series, two adjacent corrugated pipe single bodies are connected through a middle pipe, the first end of the second connecting pipe is fixedly connected with the flange at the first end of the corrugated pipe assembly, and the second end of the second connecting pipe is fixedly connected with the first ends of the at least two corrugated pipe single bodies which are connected in series; the first end of the third connecting pipe is fixedly connected with the second ends of the at least two corrugated pipe monomers which are connected in series, and the second end of the third connecting pipe is fixedly connected with a flange at the second end of the corrugated pipe assembly;
wherein, the outer wall of the middle pipe is provided with a guide plate;
or, the bellows assembly comprises: the second connecting pipe, the corrugated pipe single body and the third connecting pipe;
the first end of the second connecting pipe is fixedly connected with the flange at the first end of the corrugated pipe assembly, and the second end of the second connecting pipe is fixedly connected with the first end of the corrugated pipe single body; and the first end of the third connecting pipe is fixedly connected with the second end of the corrugated pipe monomer, and the second end of the third connecting pipe is fixedly connected with the flange at the second end of the corrugated pipe component.
4. The demountable expansion joint of claim 1, wherein a viewing window is disposed on a wall of the outer tube, so that the outer tube forms a partially see-through viewing structure;
or the external pipe is a quartz pipe, so that the external pipe forms a whole perspective observation structure, and a hollow external protection pipe is arranged outside the quartz pipe.
5. The demountable expansion joint of claim 1, wherein sealing structures are disposed between the flange of the joint assembly and the flange of the first end of the external pipe, between the flange of the first end of the bellows assembly and the flange of the first end of the extension pipe, and between the flange of the second end of the bellows assembly and the flange of the second end of the external pipe;
the sealing structure comprises a protrusion and a groove which are arranged on the opposite end surfaces of two connected flanges, the protrusion is matched with the groove, and a sealing material is clamped between the protrusion and the groove.
6. The collapsible expansion joint of claim 1 further comprising:
the transportation adjusting assembly is sleeved on the outer side of the pipe wall of the second end of the long connecting pipe and comprises two semicircular clamps and an ear plate, the two semicircular clamps are respectively provided with a clamping groove, the two clamps are detachably connected, the ear plate is clamped with the clamping grooves, and the ear plate is provided with an ear plate hole;
the pull rod penetrates through the lug plate hole to be fixedly connected with the fixed flange, and the pull rod is detachably connected with the lug plate.
7. The collapsible expansion joint of claim 1 further comprising:
the endoscope penetrates through the second compression ring and the graphite packing and is arranged in the bottom space of the corrugated pipe assembly and the long connecting pipe, a terminal interface is arranged on the long connecting pipe at a position close to the second end of the long connecting pipe, and the terminal interface is connected with the endoscope;
wherein, the endoscope is a waterproof endoscope with illumination.
8. The collapsible expansion joint of claim 6 further comprising:
and the first end of the displacement sensor is fixed on a flange at the second end of the corrugated pipe assembly, and the second end of the displacement sensor is connected to the lug plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302732.2A CN113738988B (en) | 2021-11-05 | 2021-11-05 | Detachable expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302732.2A CN113738988B (en) | 2021-11-05 | 2021-11-05 | Detachable expansion joint |
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| Publication Number | Publication Date |
|---|---|
| CN113738988A CN113738988A (en) | 2021-12-03 |
| CN113738988B true CN113738988B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111302732.2A Active CN113738988B (en) | 2021-11-05 | 2021-11-05 | Detachable expansion joint |
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| CN (1) | CN113738988B (en) |
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| CN102278561A (en) * | 2011-06-29 | 2011-12-14 | 北京宇航***工程研究所 | Large-caliber long-span compensator for conveying pipe |
| CN104976462A (en) * | 2015-07-08 | 2015-10-14 | 河南昌茂供水设备有限公司 | External pressure rubber joint |
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| CN207261905U (en) * | 2017-10-13 | 2018-04-20 | 江苏恒润波纹管有限公司 | A kind of expansion joint |
| CN109519717A (en) * | 2018-12-30 | 2019-03-26 | 江苏恒丰波纹管有限公司 | Big pull rod expansion bellow with detection device |
| CN211315473U (en) * | 2019-12-24 | 2020-08-21 | 新疆兆荣石油化工装备制造有限公司 | Internal and external pressure balance type corrugated compensator |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB847783A (en) * | 1958-06-02 | 1960-09-14 | Pforzheim Metallschlauch | Improvements in resilient couplings or mountings between two members which are movable relatively to one another |
| CN201180885Y (en) * | 2008-04-27 | 2009-01-14 | 锦州中德波纹管件制造有限公司 | Corrugated expansion regulator |
| CN102278561A (en) * | 2011-06-29 | 2011-12-14 | 北京宇航***工程研究所 | Large-caliber long-span compensator for conveying pipe |
| CN104976462A (en) * | 2015-07-08 | 2015-10-14 | 河南昌茂供水设备有限公司 | External pressure rubber joint |
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| CN207261905U (en) * | 2017-10-13 | 2018-04-20 | 江苏恒润波纹管有限公司 | A kind of expansion joint |
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| Publication number | Publication date |
|---|---|
| CN113738988A (en) | 2021-12-03 |
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