CN111672861A

CN111672861A - Self-locking sealed pipeline plug

Info

Publication number: CN111672861A
Application number: CN202010621360.9A
Authority: CN
Inventors: 张小春; 钱钢
Original assignee: Shanghai Jinzhou Marine Equipment Manufacturing Co ltd
Current assignee: Shanghai Jinzhou Marine Equipment Manufacturing Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-09-18

Abstract

The application discloses a self-locking sealed pipeline plug, which relates to the technical field of pipeline construction auxiliary equipment and comprises an extrusion part and a tensioning part, wherein the extrusion part and the tensioning part are matched for use; the extrusion block is inserted in the tensioning block and expands the tensioning block, the expanded tensioning block is abutted against the inner wall of the pipeline and seals the opening of the non-welding end of the pipeline, and a locking piece used for limiting the separation of the extrusion block and the tensioning block is arranged on the locking shaft. The self-locking sealed plug is combined with the pipeline more tightly, namely a gap between the plug and the inner wall of the pipeline is smaller or the gap diameter of the gap is smaller, so that scraps generated in the welding process or dust in the surrounding environment can be effectively limited from entering the pipeline or a pipeline system, and the requirement of high cleanliness of pipeline erection construction of oil way systems of ships and airplanes can be met.

Description

Self-locking sealed pipeline plug

Technical Field

The application relates to the technical field of auxiliary equipment for pipeline construction, in particular to a self-locking sealed pipeline plug.

Background

In the pipeline laying construction, a rubber plug is generally inserted into a pipe orifice of a non-welding end of a pipeline, and the pipeline plug can play a role in plugging the non-welding end of the pipeline and limiting sundries from entering the pipeline in the process of welding the pipeline.

However, the rubber stopper has a general sealing property in an actual use process. In pipelines with higher requirements on pipeline cleanliness, such as oil pipelines of ships and kerosene pipelines of airplanes, the rubber plugs can not well plug the pipelines. Impurities with small particle size, such as debris particles generated in welding operation and dust particles in the surrounding environment, can enter the pipeline through a gap between the rubber plug and the pipe opening, so that the pipeline is polluted.

Disclosure of Invention

In order to improve the leakproofness that the pipeline was laid, satisfy the pipeline and lay the requirement of operation to pipeline cleanliness factor, this application provides a auto-lock sealed end cap.

The application provides a self-locking sealed pipeline plug, adopts following technical scheme:

a self-locking sealed pipeline plug comprises an extrusion part and a tensioning part which are matched for use, wherein the extrusion part comprises a locking shaft and an extrusion block arranged on the locking shaft, the tensioning part comprises a tensioning block sleeved on the locking shaft and a limiting plate arranged on the tensioning block, and the limiting plate is abutted to the non-welding end of a pipeline; the extrusion block is in inserting fit with the tensioning block, the extrusion block is inserted into the tensioning block and expands the tensioning block, the expanded tensioning block abuts against the inner wall of the pipeline and seals an opening of a non-welding end of the pipeline, and a locking piece used for limiting the separation of the extrusion block and the tensioning block is arranged on the locking shaft.

Through adopting above-mentioned technical scheme, constructor is at the welded pipe, when laying pipe-line system, at first fill in the opening of the non-welding end of pipeline with the overall structure that extruded article and tensioning piece constitute, until the opening looks butt of limiting plate and non-welding end, then drive the extrusion piece through the locking axle and peg graft in the tensioning piece, at this in-process, extrusion piece expansion tensioning piece makes the tensioning piece support tightly in the opening inner wall department of pipeline, rethread locking piece restriction extrusion piece and tensioning piece phase separation, thereby reach the purpose of the sealed non-welding end of extrusion tensioning. Because in the extrusion tension type sealing structure, the combination of the plug and the pipeline is tighter, namely, the gap between the plug and the inner wall of the pipeline is less or the gap diameter of the gap is smaller, compared with the traditional rubber plug, the rubber plug can effectively limit the entering of the scraps generated in the welding process or the dust in the surrounding environment into the pipeline or a pipeline system, and can meet the requirement of high cleanness of the oil way system of ships and airplanes for pipeline erection construction.

Preferably, the pressing block and the tensioning block form an inclined surface pressing fit.

Through adopting above-mentioned technical scheme, adopt inclined plane extrusion fit structure, realize that the expansion tensioning or the shrink of extrusion piece and tensioning piece are gathered together, be favorable to improving the smooth and easy nature of expansion tensioning motion and shrink gathering together motion.

Preferably, the tensioning block comprises a cylindrical tensioning ring, a fracture groove is formed in the tensioning ring along the circumferential direction of the tensioning ring, the tensioning ring is divided by the fracture groove to form a plurality of tensioning plates, and the tensioning plates and the extrusion block form an inclined surface in extrusion fit.

Through adopting above-mentioned technical scheme, the tensioning ring that adopts to be similar to petal column structure uses with the cooperation of extrusion piece, is favorable to improving the expansion range of tensioning ring to reach the purpose that improves tensioning ring and pipeline combination stability and leakproofness, still be favorable to further improving the smooth and easy nature of expansion tensioning and shrink gathering together the action simultaneously.

Preferably, the outer diameter of the tension ring is 1-3mm smaller than the inner diameter of the pipeline.

By adopting the technical scheme, the size of the outer diameter of the tension ring is limited, so that the size of the outer diameter of the tension ring is smaller than 1-3mm of the inner diameter of the pipeline, a constructor can conveniently plug the whole structure formed by the extrusion part and the tension part into the pipeline, and balance is achieved between the expansion space of the tension ring and the stability of the tension ring abutting against the inner wall of the pipeline.

Preferably, the maximum value of the outer diameter of the extrusion block is 0.5-1mm larger than the outer diameter of the tension ring.

By adopting the technical scheme, the size of the outer diameter of the extrusion block is limited, so that the maximum size of the outer diameter of the extrusion block is 0.5-1mm larger than that of the tensioning ring, and a proper size range is selected to obtain the optimal tensioning locking force.

Preferably, the extrusion block and the tensioning block are both made of elastic wear-resistant materials.

Through adopting above-mentioned technical scheme, adopt the extrusion piece and the cooperation of tensioning piece of making by elasticity wear-resisting material to use, be favorable to improving the life-span that the end cap used and the maneuverability that the end cap used.

Preferably, the limiting plate is provided with an annular groove, and the annular groove is matched with the pipe orifice of the pipeline in an inserting manner.

By adopting the technical scheme, when a constructor installs the plug, the pipe orifice of the pipeline is in positioning, inserting and matching with the annular groove, and the stability of the installation of the plug is favorably improved.

Preferably, the locking shaft is connected with the extrusion block in an embedding and forming mode.

Through adopting above-mentioned technical scheme, the locking axle is established the shaping with the extrusion piece and is fixed, is favorable to improving the overall structure intensity of extruded piece to reach the purpose that improves the stability and the security that the end cap used.

Preferably, one end of the locking shaft, which is close to the extrusion block, is provided with a limiting block, and the limiting block abuts against the outer side surface of the extrusion block, which is far away from one side of the tensioning block.

Through adopting above-mentioned technical scheme, the stopper plays supplementary fixed extrusion piece and locking shaft's effect to further improve the overall structure intensity of extruded article.

Preferably, one end of the locking shaft, which is far away from the extrusion block, penetrates through the tensioning block and is provided with a protective sleeve.

Through adopting above-mentioned technical scheme, the protective sheath mainly plays the effect of protection locking shaft.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the extrusion tension type sealing structure, the plug and the pipeline are combined more tightly, namely, the gap between the plug and the inner wall of the pipeline is less or the gap diameter of the gap is smaller, compared with the traditional rubber plug, the extrusion tension type sealing structure can effectively limit scraps generated in the welding process or dust in the surrounding environment from entering the pipeline or a pipeline system, and can meet the requirement of high cleanness of oil way systems of ships and airplanes for pipeline erection construction; (ii) a

2. Adopt inclined plane butt cooperation between extrusion piece and the tensioning piece, and the tensioning ring of tensioning piece adopts the petal column structure after cutting apart to realize with the inclined plane extrusion cooperation of extrusion piece, is favorable to improving end cap and pipeline and supports tightly to combine fixed stability.

Drawings

Fig. 1 is a schematic structural view of a self-locking sealed pipeline plug according to an embodiment of the present application.

Fig. 2 is a schematic diagram mainly used for showing the insertion fit structure of the extrusion block and the tensioning block.

Fig. 3 is an exploded view of a self-locking sealed pipe plug according to an embodiment of the present application.

Description of reference numerals: 1. an extrusion; 11. extruding the block; 12. a locking shaft; 2. a tensioning member; 21. a tensioning block; 22. a limiting plate; 221. an annular groove; 23. a tension ring; 231. a breaking groove; 232. a tension plate; 24. inserting grooves; 3. a locking member; 4. a limiting block; 5. a spring plate; 6. a gasket; 7. a protective sleeve; 8. and (7) inserting holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a self-locking sealed pipeline plug. Referring to fig. 1 and 2, a from locking-type pipeline end cap is including extruded part 1 and tensioning piece 2 that the cooperation was used, extruded part 1 including inlay to establish fixed locking axle 12 of shaping and extrusion piece 11, and tensioning piece 2 is including tensioning piece 21 and the limiting plate 22 that integrated into one piece formed, and tensioning piece 21 overlaps to be located on locking axle 12 and pegs graft the cooperation with extruded part 1, and installs the locking piece 3 that is used for restricting

extrusion piece

11 and 21 separation of tensioning piece on the locking axle 12. Constructor fills in the non-welding end of pipeline with the major structure that extruded article 1 and tensioning 2 constitute in, until the non-welding end butt of limiting plate 22 and pipeline, pulls locking shaft 12 again and accomplishes the grafting cooperation of extrusion piece 11 and tensioning piece 21, and at this in-process, extrusion piece 11 extrusion expansion tensioning piece 21 to make the inside wall of tensioning piece 21 laminating support tight pipeline, and then reach the purpose of the non-welding end of sealed pipeline.

Referring to fig. 2 and 3, the extrusion block 11 is a circular truncated cone-shaped structure as a whole, the locking shaft 12 is a screw structure, and when the extrusion block 11 is molded by using a die, the insert molding of the extrusion block 11 and the locking shaft 12 is completed, so that the locking shaft 12 and the extrusion block 11 form an integral structure. The locking shaft 12 and the extrusion block 11 are coaxially arranged, one end of the locking shaft 12 is embedded, formed and fixed with the extrusion block 11, the end part of the locking shaft 12, which is embedded and fixed with the extrusion block 11, is formed with a limiting block 4, the limiting block 4 is abutted against the outer side surface of the extrusion block 11, which is far away from the tensioning block 21, and the other end of the locking shaft 12 penetrates through the extrusion block 11 and is matched with the tensioning block 21 in a penetrating way; meanwhile, the butterfly nut used as the locking piece 3 is connected to the end of the locking shaft 12 penetrating through the tensioning block 21 through threads, and the elastic sheet 5 and the gasket 6 are installed between the butterfly nut installed on the locking shaft 12 and the tensioning block 21, so that the locking stability of the locking piece 3 is improved.

Referring to fig. 3, the end of the locking shaft 12 penetrating through the extrusion block 11 and the tensioning block 21 is further sleeved with a protection sleeve 7, and after the constructor installs the gasket 6, the spring plate 5 and the butterfly nut, the protection sleeve 7 is sleeved on the locking shaft 12 to protect the end of the locking shaft 12.

Referring to fig. 3, the tensioning block 21 is a cylindrical structure, and the limiting plate 22 is an annular structure disposed coaxially with the tensioning block 21 and integrally formed at an end of the tensioning block 21 away from the pressing block 11. Still integrated into one piece has tensioning ring 23 on tensioning block 21, tensioning ring 23 is the annular structure of coaxial shaping in tensioning block 21 near the tip position department of extrusion piece 11, tensioning ring 23 forms an inserting groove 24 with the cooperation of tensioning block 21 promptly, when

extrusion piece

11 and 21 grafting cooperations of tensioning block, extrusion piece 11 can peg graft in inserting groove 24, and central point department of putting on the tensioning block 21 runs through along its axis direction and offers and is formed with spliced eye 8, when

extrusion piece

11 and 21 grafting cooperation, spliced eye 8 and the one side that deviates from tensioning block 21 are worn to establish by locking shaft 12.

Referring to fig. 3, a plurality of fracture grooves 231 are uniformly formed in the tension ring 23 along the circumferential direction of the tension ring, the fracture grooves 231 divide the tension ring 23 into a plurality of tension plates 232, each tension plate 232 is of an arc plate structure, and a chamfer inclined surface is formed at the end of each tension plate 232 far away from the corresponding tension block 21, and when the extrusion block 11 is in splicing fit with the tension ring 23, the chamfer inclined surface plays a role in guiding the extrusion block 11 to be spliced. Because the contact surface of the extrusion block 11 and the tension plate 232 is an inclined surface, and the outer diameter of the extrusion block 11 gradually transitions from the minimum value to the maximum value, that is, the outer diameter of the extrusion block 11 transitions from the inner diameter smaller than the tension ring 23 to the inner diameter larger than the tension ring 23 in the process of the extrusion block 11 transitioning from the position close to the tension block 21 to the position far from the tension block 21, the extrusion block 11 can outwardly expand the tension ring 23 in the process of the insertion and matching of the extrusion block 11 and the tension block 21, and the tension plates 232 forming the tension ring 23 abut against the inner side wall of the pipeline, thereby achieving the purpose of plugging the orifice of the pipeline.

Referring to fig. 3, an annular groove 221 is formed on the position-limiting plate 22 along the circumferential direction thereof, and when the integral structure formed by the extrusion member 1 and the tension member 2 is inserted into the pipe orifice of the pipe, the non-welded end of the pipe is inserted into the annular groove 221. The inner diameter of the pipeline is 1-3mm larger than the outer diameter of the tension ring 23, and meanwhile, the maximum value of the outer diameter of the extrusion block 11 is 0.5-1mm larger than the outer diameter of the tension ring 23. The outer diameter of the tension ring 23 and the maximum outer diameter of the extrusion block 11 are limited to balance the installation smoothness of the pipeline plug and the tightening stability of the expansion of the extrusion block 11 and the tension block 21.

In order to improve the stability and the service life of the pipeline plug, the extrusion block 11 and the tensioning block 21 are both made of elastic wear-resistant materials, such as nylon materials.

One implementation principle of the embodiment of the application is as follows: when constructors erect the welded pipeline, the integral structure of the pipeline plug formed by the extrusion part 1, the tensioning part 2 and the locking part 3 can be plugged into the pipe orifice of the non-welding end of the pipeline until the non-welding end of the pipeline is plugged into the annular groove 221 on the limiting plate 22. Then, the constructor pulls the locking shaft 12 outwards, and rotates the locking piece 3 (certainly, the locking piece 3 can be locked after the pulling action of the locking shaft 12 is completed), the locking piece 3 moves towards the direction close to the tensioning block 21 along the locking shaft 12 until the extrusion block 11 is completely inserted into the insertion groove 24 under the driving of the locking shaft 12, and the locking piece 3 abuts against the back of the tensioning block 21; in-process in extrusion piece 11 pegs graft in the inserting groove 24 of tensioning block 21, extrusion piece 11 outwards expands tensioning ring 23, make each tensioning plate 232 of tensioning ring 23 support tightly on orificial inside wall, the mouth of pipe of sealed pipeline simultaneously, and locking piece 3 plays the effect of locking extrusion piece 11 and tensioning block 21, utilize the extrusion seal cooperation between tensioning plate 232 and the orificial inside wall to realize improving the purpose of treating welding mouth of pipe leakproofness, and then reach and realize boats and ships, aircraft oil circuit system keeps clean purpose in the construction process.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a self-locking sealed pipeline end cap which characterized in that: the pipe joint clamping device comprises an extrusion part (1) and a tensioning part (2) which are matched for use, wherein the extrusion part (1) comprises a locking shaft (12) and an extrusion block (11) arranged on the locking shaft (12), the tensioning part (2) comprises a tensioning block (21) sleeved on the locking shaft (12) and a limiting plate (22) arranged on the tensioning block (21), and the limiting plate (22) is abutted to the non-welding end of the pipe; extrusion piece (11) and tensioning piece (21) are pegged graft and are cooperated, extrusion piece (11) are pegged graft in tensioning piece (21) and are expanded tensioning piece (21), are expanded tensioning piece (21) support tightly in the opening of the inner wall of pipeline and the non-welding end of sealed pipeline, just be provided with locking piece (3) that are used for restricting extrusion piece (11) and tensioning piece (21) separation on locking axle (12).

2. The self-locking sealed pipe plug of claim 1, wherein: the extrusion block (11) and the tensioning block (21) form an inclined surface extrusion fit.

3. The self-locking sealed pipe plug of claim 2, wherein: the tensioning block (21) comprises a cylindrical tensioning ring (23), a fracture groove (231) is formed in the tensioning ring (23) along the circumferential direction of the tensioning ring, the tensioning ring (23) is divided by the fracture groove (231) to form a plurality of tensioning plates (232), and the tensioning plates (232) and the extrusion block (11) form an inclined surface in extrusion fit.

4. The self-locking sealed pipe plug of claim 3, wherein: the outer diameter of the tensioning ring (23) is 1-3mm smaller than the inner diameter of the pipeline.

5. The self-locking sealed pipe plug of claim 4, wherein: the maximum value of the outer diameter of the extrusion block (11) is 0.5-1mm larger than the outer diameter of the tension ring (23).

6. The self-locking sealed pipe plug according to any one of claims 1 to 5, wherein: the extrusion block (11) and the tensioning block (21) are both made of elastic wear-resistant materials.

7. The self-locking sealed pipe plug of claim 1, wherein: an annular groove (221) is formed in the limiting plate (22), and the annular groove (221) is matched with a pipe orifice of the pipeline in an inserted mode.

8. The self-locking sealed pipe plug of claim 1, wherein: the locking shaft (12) is connected with the extrusion block (11) in an embedding and forming manner.

9. The self-locking sealed pipe plug of claim 8, wherein: the locking shaft (12) is close to the one end of extrusion piece (11) and is provided with stopper (4), stopper (4) butt is kept away from on the lateral surface of tensioning piece (21) one side in extrusion piece (11).

10. The self-locking sealed pipe plug of claim 9, wherein: one end, far away from the extrusion block (11), of the locking shaft (12) penetrates through a tensioning block (21) and is provided with a protective sleeve (7).