Split type plugging block for plugging large-diameter flange under pressure

Abstract

The embodiment of the utility model provides a split type plugging block for plugging a large-diameter flange under pressure. The split type plugging block comprises a plugging block assembly configured based on the diameter of the flange, the blocking block assembly comprises a plurality of blocking blocks, and each blocking block is matched with the local structure of the flange so as to be correspondingly arranged at the local position; wherein a detachable connecting structure is arranged between every two adjacent plugging blocks, through the detachable connecting structures, the multiple plugging blocks are assembled on the flange in a splicing structure to form a plugging structure, and plugging and leaking stoppage are carried out on the whole or local part of the flange under the condition of under-pressure plugging. The technical scheme has the advantage of being flexible in combination, local plugging and leaking stoppage can be achieved after combination, overall plugging and leaking stoppage can also be achieved, and on-site fire operation is not needed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of leak stoppage under pressure, and particularly relates to a split type plugging block for large-diameter flange leak stoppage under pressure. BACKGROUND

[0002] In the past, the traditional method for repairing sudden pipeline accidents must be to stop the pipeline, empty the pipeline and then take some temporary remedial measures, which brings great hidden dangers to the safe operation of the pipeline.

[0003] The pipeline leak stoppage under pressure technology is a safe, economical and fast and efficient special technology for repairing in-service pipelines. It can complete the replacement, displacement, valve replacement and branch line addition of the pipeline without interrupting the pipeline medium transportation, and can also quickly and safely repair the accident pipeline and restore the operation of the pipeline when the pipeline leaks.

[0004] When a large flange of a chemical equipment with a diameter of 2000-4000 mm leaks, it cannot be stopped and needs to be temporarily plugged under pressure. It is difficult to make an overall fixture due to the large diameter. UTILITY MODEL CONTENTS

[0005] In view of the above problems existing in the prior art, the purpose of the utility model embodiment is to provide a split type plugging block for large-diameter flange leak stoppage under pressure.

[0006] The utility model embodiment adopts the technical scheme of a split type plugging block for large-diameter flange leak stoppage under pressure, comprising: a plugging block assembly configured based on the diameter of the flange; the plugging block assembly comprises a plurality of plugging blocks, each of which is adapted to the structure of a local part of the flange to be correspondingly installed at the local position; wherein: a detachable connecting structure is arranged between each plugging block, and the plurality of plugging blocks are installed in a splicing structure on the flange to form a plugging structure, which can plugging leak under the condition of leak stoppage under pressure.

[0007] Further, the plurality of plugging blocks comprise intermediate plugging blocks and end plugging blocks, the end portions of the intermediate plugging blocks and the end plugging blocks are provided with detachable connecting structures, the end portions of the plurality of intermediate plugging blocks are connected to form an intermediate section through the detachable connecting structures, and the end portions of the intermediate plugging blocks at both ends of the intermediate section are connected to the end plugging blocks through the detachable connecting structures.

[0008] The intermediate plugging blocks and the end plugging blocks have inner sides and outer sides, and the distance between the inner side and the outer side of the intermediate plugging block is smaller than the distance between the inner side and the outer side of the end plugging block.

[0009] Further, the detachable connecting structure comprises a recess and a protrusion, the two ends of the intermediate plugging blocks and the end plugging blocks are respectively provided with the recess and the protrusion, and the recess and the protrusion are matched.

[0010] Further, the convex part comprises a plug, the concave part comprises a slot, a positioning pin and a first positioning hole communicated with the slot, the plug is provided with a second positioning hole matched with the first positioning hole, and the positioning pin is inserted into the first positioning hole and the second positioning hole when the plug is inserted into the slot.

[0011] Further, at least one of the first positioning hole and the second positioning hole is a threaded hole, and the positioning pin is a screw.

[0012] Further, the end faces of the two ends of the intermediate block and the end block are configured as inclined surfaces, so that the length of the inner side surface of the intermediate block and the end block is less than the length of the outer side surface.

[0013] Further, at least one of the intermediate blocks is provided with a glue injection hole communicated with the inner side surface and the outer side surface of the intermediate block.

[0014] Further, a plug is further included, and the inner wall of the glue injection hole is provided with threads matched with the plug.

[0015] Compared with the prior art, the split type block for large diameter flange sealing under pressure has the characteristics of flexible combination, can locally seal leakage or integrally seal leakage, and can be used without on-site fire.

[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the utility model.

[0017] The foregoing summary of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0018] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components in different views. Like numerals having different letter suffixes can represent different instances of similar components. The drawings illustrate generally, by way of example, various embodiments of the utility model and are not intended to limit the utility model to the embodiments described herein, but to serve as an aid in understanding the utility model. The same reference numerals in different drawings can identify the same or similar components. Such embodiments are examples only, and are not intended to suggest that the utility model is limited in its scope to the embodiments described herein. One skilled in the art will readily recognize from the disclosure herein, that other embodiments of the utility model can be used without departing from the spirit and scope of the utility model.

[0019] Fig. 1 The drawings are schematic views of embodiments of the utility model.

[0020] Fig. 2 The drawings are schematic views of block structures of embodiments of the utility model.

[0021] Fig. 3 The utility model discloses a stopper side surface structure schematic diagram.

[0022] Fig. 4 The utility model discloses a stopper plan view.

[0023] Fig. 5 The utility model discloses a stopper structure schematic diagram with glue injection hole.

[0024] Fig. 6 The utility model discloses a stopper plan view with glue injection hole. DETAILED DESCRIPTION

[0025] In order to make the utility model embodiment's purpose, technical scheme and advantage more clearly, the following will combine the drawings of the utility model embodiment, and the technical scheme of the utility model embodiment is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. On the basis of the described embodiment of the utility model, all other embodiments obtained by the person skilled in the art without the premise of creative labor belong to the scope of the utility model protection.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning of the person skilled in the art in the field to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but only distinguish different components. "Include" or "contain" and similar words mean that the element or object before the word covers the element or object listed after the word and its equivalent, and does not exclude other elements or objects. "Connect" or "connect" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] In order to keep the following description of the utility model embodiment clear and simple, the utility model omits the detailed description of known functions and known components.

[0028] Reference Figs. 1 to 6The utility model embodiment provides big diameter flange with pressure plugging split type plugging piece, include: based on the plugging piece subassembly of flange diameter configuration, the plugging piece subassembly includes a plurality of plugging pieces, every Plugging piece is adapted to the structure of partial flange to be correspondingly installed in the partial position, wherein: every plugging piece is detachably connected between the structure, through detachable connecting structure, a plurality of plugging pieces are installed in flange and form plugging structure with splicing structure, and the whole or partial flange is plugged under the condition of plugging with pressure.

[0029] In some embodiments, the plurality of plugging pieces includes intermediate plugging pieces 1 and end plugging pieces 2, the end of the intermediate plugging piece 1 and the end plugging piece 2 is provided with a detachable connecting structure, a plurality of the end of the intermediate plugging piece 1 is connected to form an intermediate section with a detachable connecting structure, and the end of the intermediate plugging piece 1 at both ends of the intermediate section is connected to the end plugging piece 2 with a detachable connecting structure.

[0030] The intermediate plugging piece 1 and the end plugging piece 2 have an inner side and an outer side, and the distance between the inner side and the outer side of the intermediate plugging piece 1 is less than the distance between the inner side and the outer side of the end plugging piece 2.

[0031] The large diameter flange plugging split type plugging piece provided by the technical solution has the characteristics of flexible combination, and can locally plug the leakage after combination, can also plug the leakage as a whole, and can be used without on-site fire. When used, select the intermediate plugging piece 1 and the end plugging piece 2 that adapt to the flange specification, the length of the intermediate plugging piece 1 and the end plugging piece 2 is less than the pitch of the flange fastening bolt, so as to facilitate the insertion into the inner ring of the flange, the intermediate plugging piece 1 and the end plugging piece 2 are made in the form of having a taper to adapt the shape to the two flanges, a plurality of the end of the intermediate plugging piece 1 is connected to form an intermediate section with a detachable connecting structure, and the end of the intermediate plugging piece 1 at both ends of the intermediate section is connected to the end plugging piece 2 with a detachable connecting structure, so as to assemble the intermediate plugging piece 1 and the end plugging piece 2 into a whole, tightly abutting against the flange root, and the intermediate plugging piece is slightly shorter, forming a sealed cavity inside.

[0032] In some embodiments, the detachable connecting structure includes a recess and a protrusion, the two ends of the intermediate plugging piece 1 and the end plugging piece 2 are respectively provided with a recess and a protrusion, and the recess and the protrusion are matched.

[0033] Specifically, the protrusion includes a plug 3, the recess includes a slot 4, a positioning pin and a first positioning hole 5 communicating with the slot 4, the plug 3 is provided with a second positioning hole 6 matched with the first positioning hole 5, and when the plug 3 is inserted into the slot 4, the positioning pin is inserted into the first positioning hole 5 and the second positioning hole 6.

[0034] In some embodiments, at least one of the first positioning hole 5 and the second positioning hole 6 is a threaded hole, and the positioning pin is a screw. The threaded locking is used to make the connection between the tongue 3 and the groove 4 more stable.

[0035] In some embodiments, the end faces of the intermediate block 1 and the end block 2 are configured as bevels, so that the length of the inner side of the intermediate block 1 and the end block 2 is less than the length of the outer side. This makes the intermediate block 1 and the end block 2 combined into an arc shape, which can be adapted to a circular flange.

[0036] In some embodiments, at least one of the intermediate blocks 1 is provided with a glue injection hole 7, which communicates with the inner side and the outer side of the intermediate block 1. During use, one intermediate block 1 with a glue injection hole 7 can be arranged every 200-300 mm, so as to facilitate the injection of glue into the sealing cavity formed after the combination of the intermediate block 1 and the end block 2.

[0037] In some embodiments, a plug is further included, and the inner wall of the glue injection hole 7 is provided with threads matched with the plug. The glue injection hole 7 can be connected with a glue injection valve through the threads, and the plug can be used to block the glue injection hole 7 when the glue injection valve is not connected.

[0038] The above description is intended to be illustrative and not restrictive, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more solutions thereof) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. Split type plugging block for plugging large diameter flange under pressure, characterized in that, The application relates to a plug assembly based on the diameter of a flange, which comprises a plurality of plugs, each of which is adapted to the structure of a local part of the flange to be correspondingly installed in the local part; wherein: detachable connecting structures are arranged between each of the plugs, and through the detachable connecting structures, the plurality of plugs are installed in the flange in a splicing structure to form a plugging structure, and the flange is locally or integrally plugged and leak-stopped under pressure; the plurality of plugs comprise intermediate plugs (1) and end plugs (2), the end of each of the intermediate plugs (1) and the end plugs (2) is provided with a detachable connecting structure, the ends of the plurality of intermediate plugs (1) are connected in a detachable connecting structure to form an intermediate section, and the ends of the intermediate plugs (1) at the two ends of the intermediate section are respectively connected to the end plugs (2) in a detachable connecting structure; the intermediate plugs (1) and the end plugs (2) have inner sides and outer sides, and the distance between the inner side and the outer side of the intermediate plug (1) is smaller than the distance between the inner side and the outer side of the end plug (2). The detachable connecting structure comprises a recess and a convex part, the two ends of the intermediate plug (1) and the end plug (2) are respectively provided with the recess and the convex part, and the recess and the convex part are matched.

2. The split-type blocking piece for blocking large-diameter flange with pressure according to claim 1, characterized in that, The convex part comprises a plug (3), the recess comprises a plug slot (4), a positioning pin and a first positioning hole (5) communicated with the plug slot (4), the plug (3) is provided with a second positioning hole (6) matched with the first positioning hole (5), and when the plug (3) is inserted into the plug slot (4), the positioning pin is inserted into the first positioning hole (5) and the second positioning hole (6).

3. The split-type blocking piece for blocking large-diameter flanges under pressure according to claim 2, characterized in that, At least one of the first positioning hole (5) and the second positioning hole (6) is a threaded hole, and the positioning pin is a screw.

4. The split-type blocking piece for blocking under pressure of a large-diameter flange according to claim 3, characterized in that, The end faces of the two ends of the intermediate plug (1) and the end plug (2) are configured as inclined surfaces, so that the length of the inner side of the intermediate plug (1) and the end plug (2) is smaller than the length of the outer side.

5. The split-type plugging block for plugging under pressure of large-diameter flanges according to claim 1, characterized in that, At least one of the intermediate plugs (1) is provided with a glue injection hole (7) matched with the inner side and the outer side of the intermediate plug (1).

6. The split-type plugging block for plugging under pressure of large-diameter flanges according to claim 1, characterized in that, A thread plug is further arranged on the inner wall of the glue injection hole (7).

7. The split-type blocking piece for blocking under pressure of a large-diameter flange according to claim 6, characterized in that, ​

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