CN212643876U

CN212643876U - Expansion joint installation device

Info

Publication number: CN212643876U
Application number: CN202021408034.1U
Authority: CN
Inventors: 苏志伟; 黄仁忠; 彭军; 李文钰; 李福春; 吴畏; 张克强; 唐坤林; 谢小明; 石泰珲; 赵登山; 赵占奎; 张义科
Original assignee: Nuclear Power Institute of China
Current assignee: Nuclear Power Institute of China
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-02
Anticipated expiration: 2030-07-16

Abstract

The utility model relates to a pipeline compensation technical field, concretely relates to expansion joint installation device, the technical scheme who adopts is: an expansion joint installation device comprises a tensioning part, an adjusting bolt and a locking chain formed by a plurality of connecting unit connecting lugs, wherein the connecting units are provided with through holes, and the through holes are used for penetrating the locking bolt; tensioning portion one end links to each other with the engaging lug on the locking chain, the tensioning portion other end links to each other with adjusting bolt, the adjusting bolt connects to each other with the engaging lug on another locking chain. The utility model discloses an adjust adjusting bolt to pulling locking chain, thereby compression expansion joint can solve the dismantlement and the installation technical problem of expansion joint maintenance in-process, has easy operation, applicable in different diameters and length, do not harm spare part, do not harm the flange terminal surface, do not harm the gasket, do not destroy the cooperation precision of pipeline, characteristics with low costs, but the wide application is in the installation dismantlement work of various pipeline, the equipment that have the expansion joint.

Description

Expansion joint installation device

Technical Field

The utility model relates to a pipeline compensation technical field, concretely relates to expansion joint installation device.

Background

An expansion joint is a flexible structure provided on a vessel shell or a pipe in order to compensate for additional stress due to temperature difference and mechanical vibration, and belongs to a compensation element. The main structure includes: bellows, end pipes, brackets, flanges, conduits, and the like. The expansion joint can utilize the effective telescopic deformation of the main body corrugated pipe to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion with heat and contraction with cold and the like, compensate the axial, transverse and angular displacement of the pipelines, conduits, containers and the like, and can also be used for noise reduction and shock absorption. Has been widely applied to the fields of chemical industry, metallurgy, nuclear energy and the like.

When the expansion joint is installed for the first time, the expansion joint is simple and convenient to install for the first time due to the good factory-leaving cold-tightening device and the large installation space. However, in production and use, most expansion joints are deformed due to pipelines or equipment in the process of maintenance, disassembly and assembly to generate axial displacement, and the axial displacement causes the problem of insufficient assembly clearance generated in the process of disassembly and assembly in the process of maintenance. Because the cold tight device after the initial installation has already been demolishd or does not use the cold tight device in the initial installation, lead to the expansion joint to be in the operating mode that takes place axial displacement when later maintenance, can't use the cold tight device, finally can't normally accomplish the installation work after overhauing.

To the unable installation problem behind the expansion joint emergence axial displacement later stage maintenance, mainly there is following solution in the prior art: the first scheme is that lifting lugs or threaded holes are welded at flanges or supports at two ends of the existing expansion joint, and the compression of the expansion joint is realized by utilizing the cold tightening principle; the second scheme is that a crow bar, a screwdriver and other tools are used for directly prying the flange of the expansion joint so as to increase the gap between the flange of the pipeline or equipment and the flange of the expansion joint. The first scheme has the defects of difficult construction, complex operation and the like, and the second scheme has the defects of irregular construction, gasket damage, flange damage, associated equipment movement and the like.

SUMMERY OF THE UTILITY MODEL

The technical problems that in the prior art, due to the fact that expansion and contraction or axial displacement occurs in the use process of equipment or a pipeline, the gap between an expansion joint flange and the equipment or the pipeline flange is small, and the disassembly and assembly work in the overhaul process cannot be completed smoothly are solved; the utility model provides an expansion joint installation device can solve the dismantlement and the installation technical problem of expansion joint maintenance in-process, has easy operation, applicable in different diameters and length, do not harm spare part, do not harm the flange terminal surface, do not harm the gasket, do not destroy the cooperation precision of pipeline, characteristics with low costs, but the wide application is in the installation dismantlement work of various pipeline, the equipment that have the expansion joint.

The utility model discloses a following technical scheme realizes:

the utility model provides an expansion joint installation device, includes the locking chain that becomes by a plurality of linkage element engaging lug, the linkage element is equipped with the via hole, the via hole is used for wearing to establish locking bolt.

When the expansion joint is disassembled, a locking chain is wound at the connecting flange of a pipeline or equipment, and the locking chain is fixedly locked through a locking bolt and nut matching mechanism; meanwhile, the other locking chain is wound on the expansion joint corrugated pipe, and the locking chain is fixedly locked by a bolt-nut matching mechanism. And then connecting one end of the tensioning part with one locking chain, connecting the adjusting bolt with the other locking chain, and connecting the tensioning part with the adjusting bolt, so that the tensioning part is adjusted to pull the locking chain fixed on the expansion joint corrugated pipe through the tensioning part, thereby compressing the expansion joint and dismantling the expansion joint. And after the expansion joint is disassembled, the locking chain is disassembled.

When the expansion joint is used for installing the expansion joint, one locking chain is wound at one end of the expansion joint corrugated pipe, and the locking chain is fixedly locked by matching of the locking bolt and the locking nut; meanwhile, the other locking chain is wound on the other end of the expansion joint corrugated pipe and is fixedly locked by matching a locking bolt and a locking nut with the locking chain. And then connecting one end of the tensioning part with one locking chain, connecting the adjusting bolt with the other locking chain, and connecting the tensioning part with the adjusting bolt, so that the tensioning part is adjusted to pull the locking chain fixed on the expansion joint corrugated pipe through the tensioning part, thereby compressing the expansion joint, and generating a mounting gap to mount the expansion joint. In the installation process or after the installation is finished, the adjusting bolt and the locking bolt are loosened, and the locking chain is removed.

In the process of dismounting and mounting the expansion joint, the connecting flange or the expansion joint corrugated pipe is locked by the locking chain and then locked by the locking nut, and the shape enclosed by the locking chain is determined by the shape of the locked part, so that the expansion joint can be suitable for expansion joints with different shapes; the length of the locking chain is determined by the length of the locked part, and the locking chain can be suitable for expansion joints with different lengths. In addition, the locking chain can be tightly attached to the outer side wall of the locked part after being locked, so that the stress area is increased, and the damage of external force to equipment in the process of compressing the expansion joint is reduced. In addition, in the process of assembling and disassembling the expansion joint, the flange does not need to be pried, so that the end face of the flange, the gasket and the matching precision of the pipeline cannot be damaged. The locking chain consisting of the connecting units is simple and convenient to manufacture and low in production cost. Therefore the utility model has the characteristics of easy operation, applicable in different diameters and length, do not harm spare part, do not harm the flange terminal surface, do not harm the gasket, do not destroy the cooperation precision of pipeline, with low costs, but the wide application is in the installation dismantlement work of various pipelines, the equipment that have the expansion joint.

Preferably, the expansion joint corrugated pipe further comprises a locking bolt, and the locking chain is formed into a closed shape by locking the two connecting units through the locking bolt so as to be locked on one end of the pipeline connecting flange or the expansion joint corrugated pipe, which is far away from the connecting flange.

As a specific embodiment of the connection unit, the connection unit includes a first connection portion and a second connection portion, and the first connection portion and the second connection portion are both circular rings provided with engagement openings, so as to connect the connection units into a locking chain, and simultaneously ensure that each connection unit has a through hole for a locking bolt to pass through, and the number of the connection units can be determined according to the perimeter of a locked component.

Preferably, the first connecting part and the second connecting part are connected through a third connecting part, and the third connecting part is of an arc-shaped structure, so that the first connecting part and the second connecting part are mutually independent, and the service life of the connecting unit is prolonged; the locking bolts inserted in the connecting units can be mutually independent from the connecting units connected with the connecting units, so that the use reliability of the locking chain is ensured.

Preferably, the first connecting portion, the second connecting portion and the third connecting portion are integrally formed to ensure sufficient strength and rigidity of the connecting unit.

Further, still include a plurality of engaging lugs, the engaging lug links to each other with the locking chain, the engaging lug is used for connecting taut portion or adjusting bolt to taut portion, adjusting bolt link to each other with the locking chain.

As a specific implementation mode of the connecting lug, the connecting lug is C-shaped, so that the connecting lug is conveniently connected with the locking chain, and the number of the connecting lugs can be adjusted according to the pressing force, so that the stress is more uniform.

Furthermore, both ends of the connecting lug are provided with through holes, and the through holes are used for penetrating through the tensioning part or the adjusting bolts so as to ensure the connection reliability of the connecting lug, the tensioning part and the adjusting bolts.

Furthermore, the locking chains are provided with two chains, so that the expansion joint can be quickly disassembled and assembled.

Further, still include taut portion and adjusting bolt, taut portion one end links to each other with the engaging lug on the locking chain, taut portion other end links to each other with adjusting bolt, adjust the spiro union and link to each other with the engaging lug on another locking chain to further improvement expansion joint's dismouting efficiency.

Preferably, the tensioning part is a rope or a chain, and the length of the tensioning part can be adjusted to adapt to expansion joints with different lengths.

The utility model discloses have following advantage and beneficial effect:

1. the locking chain is adopted to lock the expansion joint or the connecting flange, so that the expansion joint structure is suitable for expansion joint structures with different shapes and different diameters;

2. the locking chain is adopted to lock the expansion joint or the connecting flange, so that the area of a stressed part is increased, and the damage of external force to equipment in the process of compressing the expansion joint is reduced;

3. the locking chain is fixed by the locking bolt, so that the locking of the locking chain is rapid, convenient and safe;

4. the C-shaped connecting lugs are adopted, the number of the connecting lugs can be adjusted according to the pressing force, and the stress is ensured to be more uniform;

5. the tensioning part adopts a rope or a chain, the length of the tensioning part can be adjusted, and the expansion joint is suitable for expansion joints with different lengths.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of the usage state of the present invention;

fig. 2 is a schematic structural view of the locking chain of the present invention;

FIG. 3 is a schematic view of the structure of the connection unit of the present invention;

fig. 4 is a schematic structural view of the engaging lug of the present invention.

Names of various parts in the drawings:

1-connecting unit, 2-locking chain, 3-locking bolt, 4-first connecting part, 5-second connecting part, 6-third connecting part, 7-connecting lug, 8-tensioning part, 10-adjusting bolt, 11-perforation and 12-expansion joint corrugated pipe.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

The utility model provides an expansion joint installation device, includes the locking chain 2 that becomes by a plurality of linkage unit 1 engaging lug 7, linkage unit 1 is equipped with the via hole, the via hole is used for wearing to establish locking bolt 3. It is understood that the connection unit 1 may be a connection unit with a via hole in various shapes, such as a connection plate with two holes, a connection block, etc.; in this example, the connection unit 1 includes a first connection portion 4 and a second connection portion 5, and the first connection portion 4 and the second connection portion 5 are both circular rings provided with snap-in ports, so as to connect the connection units 1 into the locking chain 2, and at the same time, it is ensured that each connection unit 1 has a through hole for the locking bolt 3 to pass through, and the number of the connection units 1 can be determined according to the perimeter of the locked component.

Preferably, the first connecting portion 4 and the second connecting portion 5 are connected by a third connecting portion 6, and the third connecting portion 6 is an arc-shaped structure, so that the first connecting portion 4 and the second connecting portion 5 are independent of each other, and the service life of the connecting unit 1 is prolonged; the locking bolt 3 inserted into the connecting unit 1 and the connecting unit 1 connected with the connecting unit 1 can be mutually independent, and the use reliability of the locking chain 2 can be ensured.

Preferably, the expansion joint corrugated pipe further comprises a locking bolt 3, and the locking chain 2 is formed into a closed shape by locking the two connecting units 1 through the locking bolt 3 so as to lock the locking chain 2 on the end, away from the connecting flange, of the pipe connecting flange or the expansion joint corrugated pipe. To ensure sufficient strength and rigidity of the connection unit 1, the first connection portion 4, the second connection portion 5, and the third connection portion 6 are integrally formed.

Further, still include a plurality of engaging lugs 7, engaging lug 7 links to each other with locking chain 2, engaging lug 7 is used for connecting taut portion 8 or adjusting bolt 10 to taut portion 8, adjusting bolt 10 link to each other with locking chain 2.

As a specific implementation mode of the connecting lug 7, the connecting lug 7 is C-shaped, and when in use, the connecting lug 7 is inserted into a through hole of the connecting unit 1, so that the connecting lug 7 is connected with the locking chain 2, and the number of the connecting lugs 7 can be adjusted according to the pressing force, so as to ensure that the stress is more uniform.

Furthermore, both ends of the connecting lug 7 are provided with through holes 11, and the through holes 11 are used for penetrating the tensioning part 8 or the adjusting bolt 10 so as to ensure the connection reliability of the connecting lug 7 with the tensioning part 8 and the adjusting bolt 10.

Furthermore, the locking chains 2 are provided with two chains, so that the expansion joint can be quickly disassembled and assembled.

Further, still include taut portion 8 and adjusting

bolt

10, 8 one ends in taut portion link to each other with engaging lug 7 on the

locking chain

2, 8 other ends in taut portion link to each other with adjusting bolt 10, the adjusting bolt connects and links to each other with engaging lug 7 on another locking chain 2 to further improvement expansion joint's dismouting efficiency.

Preferably, the tensioning part 8 is a rope or a chain, and the length of the tensioning part can be adjusted to adapt to expansion joints with different lengths.

Description of the present embodiment:

when the expansion joint is disassembled, one locking chain 2 is wound at the flange of the pipeline (equipment), and the locking chain 2 is fixedly locked by using a locking bolt 3 and a nut in a screw fit mode; meanwhile, the connecting lugs 7 penetrate through holes of the locking chain 2, the connecting lugs 7 are uniformly arranged on the whole circumference of the flange according to engineering requirements, and the adjusting bolts 10 are connected with the connecting lugs 7. And winding the other locking chain 2 at the expansion joint corrugated pipe, and fixing and locking the locking chain 2 by using a locking bolt 3 and a nut in a screwed fit mode. And the engaging lug 7 is passed through the through hole of the locking chain 2 (arranged according to the engaging lug 7 with the adjusting bolt 10), and then the engaging lug 7 is connected with the tension part 8, and correspondingly the engaging lug 7 with the tension part 8 is uniformly arranged at the whole circumference of the end of the expansion joint corrugated pipe. The fastening part 8 is connected with the adjusting bolt 10, and the fastening part 8 is fastened by adjusting the adjusting bolt 10, so that the expansion joint is compressed, and the disassembly is completed. After the disassembly is finished, the adjusting bolt 10 is loosened, the locking bolt 3 is disassembled, the locking chain 2 is disassembled, and the expansion joint is disassembled through the interface.

When the expansion joint is installed, one locking chain 2 is wound at one end of the expansion joint corrugated pipe, and the locking chain 2 is fixedly locked by utilizing a locking bolt 3 and a nut in a screwed fit mode; meanwhile, the connecting lugs 7 penetrate through the through holes of the locking chain 2, the connecting lugs 7 are uniformly arranged on the whole circumference of the expansion joint corrugated pipe according to engineering requirements, and the adjusting bolts 10 are connected with the connecting lugs 7. And winding the other locking chain 2 on the other end of the expansion joint corrugated pipe, and fixing and locking the locking chain 2 by using a locking bolt 3 and a nut in a screwed fit mode. And the other engaging lug 7 is inserted through the through hole of the locking chain 2 (arranged according to the engaging lug 7 with the adjusting bolt 10), and then the engaging lug 7 is connected with the tension part 8, and correspondingly, the engaging lug 7 with the tension part 8 is uniformly arranged at the whole circumference of the end part of the expansion joint corrugated pipe. The fastening part 8 is connected with the adjusting bolt 10, and the fastening part 8 is fastened by adjusting the adjusting bolt 10, so that the expansion joint is compressed, and the disassembly is completed. After the disassembly is finished, the adjusting bolt 10 is loosened, the locking bolt 3 is disassembled, the locking chain 2 is disassembled, and then the expansion joint can be installed.

In the process of dismounting and mounting the expansion joint, the locking chain 2 is used for locking and connecting the flange or the expansion joint corrugated pipe and then is locked by the locking bolt, and the shape enclosed by the locking chain 2 is determined by the shape of the locked part, so that the expansion joint can be suitable for expansion joints of different shapes; the length of the locking connection is determined by the length of the locked part, and the locking connection can be suitable for expansion joints with different lengths. In addition, the locking chain 2 can be tightly attached to the outer side wall of the locked part after being locked, so that the stress area is increased, and the damage of external force to equipment in the process of compressing the expansion joint is reduced. In addition, in the process of assembling and disassembling the expansion joint, the flange does not need to be pried, so that the end face of the flange, the gasket and the matching precision of the pipeline cannot be damaged. The locking chain 2 consisting of the connecting units 1 is simple and convenient to manufacture and low in production cost. Therefore the utility model has the characteristics of easy operation, applicable in different diameters and length, do not harm spare part, do not harm the flange terminal surface, do not harm the gasket, do not destroy the cooperation precision of pipeline, with low costs, but the wide application is in the installation dismantlement work of various pipelines, the equipment that have the expansion joint.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an expansion joint installation device, includes locking chain (2) that become by a plurality of linkage element (1) engaging lug, its characterized in that, linkage element (1) is equipped with the via hole, the via hole is used for wearing to establish locking bolt (3).

2. Expansion joint mounting arrangement according to claim 1, further comprising a locking bolt (3), whereby locking of the two connection units (1) by means of the locking bolt (3) causes the locking chain (2) to assume a closed shape.

3. Expansion joint mounting arrangement according to claim 2, wherein the connection unit (1) comprises a first connection part (4) and a second connection part (5), the first connection part (4) and the second connection part (5) each being a circular ring provided with a bite opening.

4. An expansion joint mounting arrangement according to claim 3, wherein the first and second connection portions (4, 5) are connected by a third connection portion (6), the third connection portion (6) being of arcuate configuration.

5. An expansion joint mounting arrangement according to claim 4, wherein the first (4), second (5) and third (6) connection portions are integrally formed.

6. Expansion joint mounting device according to claim 2, further comprising several attachment lugs (7), said attachment lugs (7) being connected to the locking chain (2), said attachment lugs (7) being used for connecting the tightening part (8) or the adjusting bolt (10).

7. Expansion joint mounting arrangement according to claim 5, wherein the attachment lug (7) is C-shaped.

8. Expansion joint mounting arrangement according to claim 5, characterized in that the attachment lug (7) is provided with a through hole (11) at both ends, which through hole (11) is intended for the passage of a tightening part (8) or an adjusting bolt (10).

9. Expansion joint mounting arrangement according to any of claims 6-8, wherein two locking chains (2) are provided.

10. Expansion joint mounting arrangement according to claim 9, further comprising a tensioning part (8) and an adjusting bolt (10), said tensioning part (8) being connected at one end to an attachment lug (7) on one locking chain (2), said tensioning part (8) being connected at the other end to the adjusting bolt (10), said adjusting bolt being connected to an attachment lug (7) on the other locking chain (2).