CN116772022A - Combined plugging device for pipeline and plugging method thereof - Google Patents

Abstract

The invention discloses a combined plugging device for a pipeline and a plugging method thereof, which belong to the technical field of pipeline construction and maintenance and comprise a round waterproof sleeve bag and an annular cavity type inflatable rubber tire arranged in the waterproof sleeve bag, wherein the vertical section of the annular cavity is square, the area of a sealing surface can be effectively increased, the outer edge of the waterproof sleeve bag is tightly adhered to the inner wall of the pipeline after the inflatable rubber tire is inflated, and the radial expansion force of the inflatable rubber tire is larger than the lateral expansion force after the inflatable rubber tire is inflated; the diameter of the waterproof sleeve bag is matched with the inner diameter of the pipeline, and the inflatable rubber tire can be made of waterproof, anti-tearing and anti-scraping wear-resistant materials. The waterproof sleeve bag is supported by the inflated rubber tire, so that the operation is simple, the carrying is light, and the sealing effect is adjustable by controlling the tire pressure; the problems that if the pipeline plugging effect is poor, a large amount of water is required to be used for flushing, and the surrounding environment is damaged or polluted can be solved, and the effects of energy conservation, emission reduction and green development are realized.

Description

Combined plugging device for pipeline and plugging method thereof

Technical Field

The invention belongs to the technical field of pipeline construction and maintenance, and particularly relates to a combined plugging device for a pipeline and a plugging method thereof.

Background

In various pipeline laying constructions, intermittent construction or temporary shutdown occurs, at present, in domestic pipeline construction, in order to save cost and facilitate the drawing, wood boards, fiber boards, woven bags, color strips or other rigid materials are mostly used for temporary plugging with a pipeline orifice, and the plugging effect on the pipeline is poor due to the fact that the materials and devices have no sealing performance, and cannot meet the standard requirements of the national pipeline construction standard GB 50268; moreover, even if the plugging effect is provided, the installation and transportation are relatively laborious.

Through searching, the patent publication number is CN 2541702Y, the publication date is 3/26/2003, and the socket end face sealing inflatable rubber tire is used for lining the inner wall of a large-caliber cast iron pipe. The main technical characteristics include an inflatable bag ring with an inclined forming surface and a support ring which is connected with the inner side of the forming surface into a whole and is made of hard materials such as phenolic plastics or metal and the like which have a certain impact resistance and are not easy to deform. The inflatable rubber tire overcomes the defect that the full-rubber inflatable rubber tire in the prior art is only limited to the inner wall lining processing of a small-caliber cast iron pipe. The supporting ring of this scheme is annular structure, can not prevent all kinds of insects or other toy business turn over pipeline, also can not effectively prevent flowing backward of fluid such as sand by wind, rain, sewage.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems that in the prior art, when pipeline laying is suspended, the sealing effect of a pipeline sealing member is poor, the sealing member is heavy and the transportation is laborious, the invention provides the combined type pipeline plugging device and the plugging method thereof.

2. Technical proposal

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a pipeline combination formula plugging device, includes circular waterproof cover bag and the ring cavity formula inflatable rubber child of placing in waterproof cover bag, and the ring cavity erects cross-section shape and is square, can effectively improve sealed face area, and the inflatable rubber child is inflated the back, pastes the outer fringe of waterproof cover bag close to the pipeline inner wall, and the inflatable rubber child radial expansion force is greater than the side direction expansion force after inflating; the diameter of the waterproof sleeve bag is matched with the inner diameter of the pipeline, the inflatable rubber tire can be made of waterproof, anti-tearing and anti-scraping wear-resistant materials, for example, rubber is selected, the waterproof sleeve bag is supported by the inflatable rubber tire, the operation is simple, the carrying is light, and the sealing effect is adjustable through tire pressure control; the problem that if the pipeline plugging effect is poor, a large amount of water is required to be used for flushing, so that the surrounding environment is damaged or polluted can be solved.

Furthermore, the height-width ratio of the square annular cavity of the inflatable rubber tire is 0.50-0.65, so that the radial expansion force of the inflatable rubber tire after inflation is far greater than the lateral expansion force, and the fixing binding force and the sealing property of the whole sealing device and the inner wall of the pipeline are enhanced.

Still further, still include the support ring, the support ring supports the interior ring face at the inflation rubber child, prevents to aerify the back and inwards radial excessive expansion of rubber child, and the expansion deformation of restriction rubber child inboard to strengthen the laminating of inflation rubber matrix and pipeline inner wall, improve shutoff tensioning force, further improve the shutoff effect.

Furthermore, the support ring is formed by bending a metal belt, and generally adopts a steel belt, and the width of the steel belt is matched with the width of the inflatable rubber tire. The steel belt has certain elasticity, and the higher the plugging tension caused by the elasticity, the stronger the plugging effect can be along with the rising of the inflation pressure.

Further, after the metal belt is bent, two ends of the metal belt are detachably connected through the wedge groove connecting piece, the wedge groove connecting piece is supported when in use, and the rolled structural characteristic is carried, so that the whole steel belt is convenient to support and carry, and the effect of both sides of supporting and plugging tensioning force can be achieved.

Furthermore, the inflating rubber tire is provided with an inflating valve, so that the inflating pressure can be conveniently adjusted.

Furthermore, the waterproof sleeve bag is provided with a bag opening, and the bag opening is sealed through a zipper, so that the operation is convenient.

Further, the zipper is a two-way zipper; the waterproof bagging is a high-strength waterproof chemical fiber bagging, so that the inflatable rubber tire is prevented from being split after being inflated, and the waterproof chemical fiber bagging has better sealing effect, is tear-proof and scratch-proof and wear-resistant.

The invention also discloses a blocking method of the combined blocking device for the pipeline, which comprises the following steps:

the waterproof rubber tyre is put into the waterproof sleeve bag, the inflatable rubber tyre is inflated until the outer edge of the waterproof sleeve bag is tightly attached to the inner wall of the pipeline, the mouth of the waterproof sleeve bag is sealed, the whole installation process is flexible and quick, and the problem that the existing pipeline plugging products are heavy can be effectively solved.

The further plugging method comprises the following steps:

s1, placing an inflatable rubber tire into a waterproof sleeve bag, inflating the inflatable rubber tire, rounding the waterproof sleeve bag, transferring the waterproof sleeve bag into a pipeline for radial placement, and tightly attaching the outer edge of the waterproof sleeve bag to the inner wall of the pipeline;

s2, supporting the supporting ring on the inner ring surface of the inflatable rubber tire;

and S3, setting the tire pressure according to the inner diameter of the pipeline, re-inflating the inflatable rubber tire to the tire pressure set value, and preventing the inflatable rubber tire from radially and excessively expanding inwards after inflation so as to strengthen the fit between the inflatable rubber tire body and the inner wall of the pipeline, improve the plugging tension and further improve the plugging effect.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) The combined plugging device for the pipeline and the plugging method thereof are light and convenient, the whole installation process is flexible and quick, and the problem of heavy existing plugging products can be effectively avoided; in order to meet the requirements of the direction and the size of the inflation force, the designed width dimension of the section of the inflatable rubber tire is larger than the height dimension, and the height-width ratio is 0.5-0.65, so that the radial inflation force is larger than the lateral inflation force when the rubber tire is inflated, and the fixed binding force between the plugging device and the inner wall of the pipeline is enhanced;

(2) The combined plugging device for the pipeline and the plugging method thereof can be used for conveniently carrying the plugging product in a folding way, can be carried by using a conventional simple handbag, and solve the problems that the original plugging product is large in size, heavy and not easy to carry; the support ring can be designed to be provided with an opening end connected with the wedge groove, and has the structural characteristics of supporting when in use and rolling when in carrying, and is convenient to support and carry;

(3) When the construction is stopped for a certain reason in the pipeline construction process, the pipe orifice is exposed at the moment, and the pipeline combined plugging device can prevent various insects, small animals and wind sand from entering the pipeline and the backflow of rain and sewage; the invention can also solve the problem that if effective blocking cannot be realized, a large amount of water is required to be used for flushing, so that the surrounding environment can be destroyed or polluted;

(4) The combined plugging device for the pipeline and the plugging method thereof solve the problems of high production cost and difficult transportation and carrying of the integrated structural design in the past, and the combined plugging device for the pipeline solves the problems of high production cost, convenient and quick use and long service life of the product due to repeated inflation and deflation.

Drawings

The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present invention. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is an axial cross-sectional view of a combined plugging device for pipes according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a radial sectional structure of a combined plugging device for pipes according to an embodiment of the present invention;

FIG. 3 is a schematic illustration of a wedge groove connection and valve position in an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the wedge groove connector of FIG. 3;

fig. 5 is a schematic view of a waterproof jacket bag according to an embodiment of the present invention.

In the figure: 1. a waterproof bagging; 2. inflating the rubber tyre; 3. a support ring; 5. an inflating valve; 10. a pipe; 11. a zipper; 31. wedge groove connectors; 311. wedge grooves; 312. and (5) flat inserting ends.

Detailed Description

The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration exemplary embodiments in which the invention may be practiced. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it is to be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely illustrative and not limiting of the invention's features and characteristics in order to set forth the best mode of carrying out the invention and to sufficiently enable those skilled in the art to practice the invention. Accordingly, the scope of the invention is limited only by the attached claims.

Example 1

The embodiment provides a combined plugging device for a pipeline, which comprises a circular waterproof sleeve bag 1 and an annular cavity type inflatable rubber tire 2 arranged in the waterproof sleeve bag 1, wherein the vertical cross section of the annular cavity is square, so that the area of a sealing surface can be effectively increased, the inflatable rubber tire 2 is inflated, the outer edge of the waterproof sleeve bag 1 is tightly adhered to the inner wall of a pipeline 10, and the radial expansion force of the inflatable rubber tire 2 is larger than the lateral expansion force after inflation; the diameter of the waterproof jacket bag 1 is matched with the inner diameter of the pipeline 10, the diameter can be slightly smaller than the inner diameter of the pipeline 10 and is smaller than or equal to 3mm, and the inflatable rubber tyre 2 can be made of waterproof, anti-tearing and anti-scraping wear-resistant materials, such as rubber.

According to the plugging method of the pipeline combined plugging device, when a pipeline 10 is laid and constructed, a temporary stop phenomenon occurs or a day-night stop phenomenon exists, the inflatable rubber tire 2 is placed into the waterproof sleeve bag 1, and the inflatable rubber tire 2 is inflated until the outer edge of the waterproof sleeve bag 1 is tightly attached to the inner wall of a bell and spigot port of the pipeline 10 such as a ductile cast iron pipe, and finally the mouth of the waterproof sleeve bag 1 is sealed, and of course, the pipe orifices at the two ends of the pipeline 10 are treated in such a way, so that the whole installation process is flexible and rapid, and the problems of heavy and poor sealing effect of the existing pipeline plugging product can be effectively avoided. The waterproof sleeve bag 1 is supported by the inflatable rubber tire 2, the inflatable rubber tire 2 and the waterproof sleeve bag 1 can be folded, the operation is simple, the carrying is light, the sealing effect is adjustable through controlling the tire pressure of the inflatable rubber tire 2, the sealing maintenance of temporary shutdown in the construction process of various pipelines 10 can be applied, and the problem that if the pipeline plugging effect is poor, a large amount of water is required to be used for flushing, so that the surrounding environment can be destroyed or polluted can be solved.

Example 2

As shown in fig. 1, 2 and 3, the combined plugging device for a pipeline in this embodiment has a basic structure similar to that of embodiment 1, and is different from or improved in that: the height-width ratio of the square annular cavity of the inflatable rubber tire 2 is 0.50-0.65, wherein the effect is best when the height-width ratio is 0.55, so that the radial expansion force of the inflatable rubber tire after inflation is far greater than the lateral expansion force, and the fixed binding force and the tightness of the whole plugging device and the inner wall of a pipeline are enhanced; if different binding tension binding forces of the inflatable rubber tire plugging device and the pipeline are to be obtained, the different tension binding forces of the plugging device and the pipeline 10 can be obtained under the same inflation pressure according to actual needs by adjusting the height-width ratio of the section of the inflatable rubber tire.

Still include circular shape supporting ring 3, supporting ring 3 supports the interior ring face at inflating rubber child 2, prevents to inflate the back of inflating rubber child 2 and inwards radially excessively expand, and the expansion deformation of restriction rubber child inboard to strengthen the laminating of inflating rubber matrix and pipeline 10 inner wall, improve shutoff tensioning force, further improve the shutoff effect. The supporting ring 3 is formed by bending a metal belt, and is generally formed by manually bending a thin steel belt, wherein the width of the steel belt is matched with the width of the inflatable rubber tire 2. The steel belt has certain elasticity, and the higher the plugging tension caused by the elasticity, the stronger the plugging effect can be along with the rising of the inflation pressure. As shown in fig. 3 and 4, after the steel belt is bent, two ends of the steel belt are detachably connected through the wedge groove connecting piece 31, the wedge groove connecting piece 31 is supported when in use, and the rolled structural characteristic is carried, so that the whole steel belt is convenient to support and carry, and the effect of both supporting and plugging tension can be achieved. The wedge groove connecting piece 31 comprises a wedge groove 311 fixedly connected with one end of the steel belt and a flat inserting end 312 at the other end of the steel belt, wherein the flat inserting end 312 is inserted into the wedge groove 311 to form the wedge groove connecting piece 31 in a combined mode, and for convenient insertion, the inner side face of the end part of the wedge groove 311 can be processed into symmetrical slopes to form a guide type socket of the flat inserting end 312. In order to facilitate the coiling and collection of the support ring 3 after unloading, for the ultra-large-specification plugging device, the annular metal framework support ring 3 can be designed into a sectional structure, and the sections are connected through the wedge groove connecting piece 31, so that the whole plugging device is more beneficial to carrying and transporting.

The edge of the steel belt is preferably provided with a tilted edge, so that the effect of clamping the inflatable rubber tire 2 is achieved, displacement of the inflatable rubber tire 2 during inflation is avoided, and the effect of two-way compromise of supporting and plugging tension can be achieved. The inflating rubber tyre 2 is provided with an inflating valve 5, so that the inflating pressure can be conveniently adjusted. As shown in fig. 5, the waterproof jacket bag 1 is provided with a bag opening, and the bag opening is sealed by a zipper 11, so that the operation is convenient. The zipper 11 is a two-way zipper, so that the assembly is convenient to install and combine; the waterproof bagging 1 is a high-strength waterproof chemical fiber bagging, so that the inflatable rubber tire 2 is prevented from being split after being inflated, and the waterproof chemical fiber bagging has better sealing effect, and is tear-proof, scratch-proof and wear-resistant.

The plugging method of the combined plugging device for the pipeline of the embodiment is particularly suitable for being used for large-specification pipelines, for example, in the laying construction process of which the specification is larger than DN1000, when the construction process is intermittent or temporary stop occurs, the steps are as follows:

s1, putting an inflatable rubber tire 2 into a waterproof sleeve bag 1, inflating the inflatable rubber tire 2 by a small amount, rounding the waterproof sleeve bag 1, radially putting the waterproof sleeve bag 1 into the inner wall of a bell and spigot port of a pipeline 10, wherein the specific position is d6 of GB/T13295 standard, and the outer edge of the waterproof sleeve bag 1 is attached to the inner wall of the pipeline 10;

s2, supporting a steel belt on the inner annular surface of the inflatable rubber tire 2, and clamping the inflatable rubber tire 2 by the tilted edges of the steel belt;

s3, setting the tire pressure of the inflatable rubber tire 2 according to the inner diameter of the pipeline 10, wherein the tire pressure of 0.1-0.2MPa at the d6 position is most suitable, re-inflating the inflatable rubber tire 2 to the tire pressure of 0.1-0.2MPa, and the height-width ratio of the inflatable rubber tire 2 is 0.55 to cooperate with the tire pressure of 0.15MPa, so that the inflatable rubber tire 2 can be prevented from being excessively expanded inwards and radially after being inflated, the joint of the inflatable rubber tire 2 body and the inner wall of the pipeline 10 can be enhanced, the plugging tension is improved, and meanwhile, the plugging effect is further improved.

And S4, tensioning the bag opening of the waterproof bagging 1 by using a two-way zipper 11.

The plugging method of the combined plugging device for the pipeline can achieve temporary plugging effect when the pipeline 10 is stopped, and compressed air in the rubber tyre is discharged only through the inflating valve 5 when the pipeline is restarted, so that the plugging device can be separated from the inner wall of the pipeline and easily removed. The inflatable combined pipeline plugging device is characterized in that: the plugging device is an creative combined structure, so that the disassembled plugging device assembly can be placed into a woven bag with standard size, and the plugging device assembly is particularly convenient to transport and carry. The problems of high production cost and difficult transportation and carrying of the integrated structural design in the past are overcome, and the whole device can be repeatedly inflated and deflated for use, is convenient and quick, and has long service life.

In order to avoid the excessive radial expansion of the inflated rubber tyre 2 inwards after inflation and influence the support of the steel belt, a supporting rod can be arranged in the radial direction of the steel belt, so that the tyre pressure force application direction can be turned to the inner wall of the pipeline 10 as much as possible, the use rigidity and the use effect in the large-specification pipeline are ensured, and the sealing effect is improved.

The combined plugging device for the pipeline and the plugging method thereof can effectively prevent various insects or other small animals from entering and exiting the pipeline while ensuring the sealing effect in the maintenance process of the pipeline 10, and can also prevent the backflow of fluids such as sand, rain, sewage and the like, so that a clean maintenance environment exists in the pipeline. The structure light-weighted pipeline inflatable rubber tire and the waterproof bagging plug thereof can be made of annular rubber or plastic products, are light in weight, simple in structure and good in plugging effect, have the advantages of being convenient to carry and the like, solve the problems that an original plugging piece is large in size and heavy in weight and difficult to carry, and can be applied to intermittent temporary plugging of pipe orifices of pipe network construction. The cleaning and sanitation in the construction pipeline can be ensured, a large amount of flushing work before the operation of the pipe network is greatly reduced, and water can be saved.

Claims (10)

1. The combined plugging device for the pipeline is characterized by comprising a circular waterproof sleeve bag (1) and an annular cavity type inflatable rubber tire (2) arranged in the waterproof sleeve bag (1), wherein the vertical cross section of the annular cavity is square, the outer edge of the waterproof sleeve bag (1) is tightly adhered to the inner wall of the pipeline (10) after the inflatable rubber tire (2) is inflated, and the radial expansion force of the inflatable rubber tire (2) is larger than the lateral expansion force after the inflatable rubber tire is inflated; the diameter of the waterproof sleeve bag (1) is matched with the inner diameter of the pipeline (10).

2. The combined plugging device for the pipeline according to claim 1, wherein the aspect ratio of the square annular cavity of the inflatable rubber tire (2) is 0.5-0.65.

3. A combined plugging device for pipes according to claim 2, further comprising a support ring (3), said support ring (3) being supported on the inner circumferential surface of the pneumatic tyre (2).

4. A combined plugging device for pipes according to claim 2, characterized in that the support ring (3) is formed by metal strip rounding.

5. The combined plugging device for pipelines according to claim 4, wherein after the metal belt is rounded, two ends are detachably connected through wedge groove connecting pieces (31).

6. A combined plugging device for pipes according to claim 5, characterized in that said pneumatic tyre (2) is provided with a valve (5).

7. The combined plugging device for pipelines according to claim 6, wherein the waterproof jacket bag (1) is provided with a bag mouth, and the bag mouth is sealed by a zipper (11).

8. The combined plugging device for pipes according to claim 7, wherein said zipper (11) is a two-way zipper; the waterproof bagging (1) is a high-strength waterproof chemical fiber bagging.

9. A method of plugging a combined plugging device for a pipeline according to claim 1, wherein the inflatable rubber tyre (2) is placed in the waterproof jacket bag (1), the inflatable rubber tyre (2) is inflated until the outer edge of the waterproof jacket bag (1) is tightly attached to the inner wall of the pipeline (10), and then the mouth of the waterproof jacket bag (1) is sealed.

10. A method of plugging a combined plugging device for a pipe according to any one of claims 2 to 8, comprising the steps of:

s1, placing an inflatable rubber tire (2) into a waterproof sleeve bag (1), inflating the inflatable rubber tire (2), rounding the waterproof sleeve bag (1), transferring the waterproof sleeve bag into a pipeline (10) for radial placement, and tightly attaching the outer edge of the waterproof sleeve bag (1) to the inner wall of the pipeline (10);

s2, supporting the supporting ring (3) on the inner ring surface of the inflatable rubber tire (2);

s3, setting the tire pressure according to the inner diameter of the pipeline (10), and re-inflating the inflatable rubber tire (2) to the tire pressure set value.