CN210165077U

CN210165077U - Pipeline reinforcing device

Info

Publication number: CN210165077U
Application number: CN201921003682.6U
Authority: CN
Inventors: 王国境; 王红杰; 杨燕涛
Original assignee: Beijing Shuangyuan Youtong Engineering Technology Co ltd
Current assignee: Beijing Shuangyuan Youtong Engineering Technology Co ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-03-20
Anticipated expiration: 2029-07-01

Abstract

The utility model provides a pipeline reinforcement device, is including being divided into arc sleeve and lower arc telescopic anchor clamps sleeve, go up arc sleeve and pass through sealing bolt fixed connection down between the arc sleeve, set up the filling opening down on the arc sleeve, go up and set up at least one overflow outlet on the arc sleeve, anchor clamps sleeve sets up protruding cover, and protruding cover top sets up the overflow outlet, anchor clamps sleeve cup joints on the steel pipeline, forms annular space between anchor clamps sleeve and the steel pipeline. The utility model discloses a device, notes the material and begins from anchor clamps lower extreme position, has effectively emptied the air between anchor clamps and the body for body, resin and the perfect combination of anchor clamps have been in an organic whole, and whole reinforcement structure can warp in coordination with the pipeline, transmission defect point mechanical stress that simultaneously can be fine, and environmental suitability is strong, all can be under-50 ℃ of temperature 50 ℃ of environment construction smoothly.

Description

Pipeline reinforcing device

Technical Field

The utility model belongs to the technical field of the steel pipeline construction technique and specifically relates to, especially, relate to a pipeline reinforcement device.

Background

The steel pipeline is multi-purpose in trades such as petroleum, chemical industry, electric power, communication, municipal administration, and in the construction of steel pipeline put into operation, often can lead to the steel pipeline to receive the harm because of various reasons, if because local anticorrosive problem, if because stolen oil etc. of petroleum pipeline, for the serious harm of steel pipeline, also can bring huge, unpredictable loss for the enterprise.

The existing pipe reinforcing technology is reinforced by injecting an epoxy sleeve into a bolt fastening clamp, wherein a sleeve-shaped clamp with equivalent elastic modulus to a pipe is arranged outside the pipe at a corroded and thinned part of the pipe wall of a steel pipe, and a liquid solvent-free two-component modified epoxy resin injection material is filled into an annular gap between the sleeve-shaped clamp and the outer wall of the pipe, wherein the modified epoxy resin has excellent anti-corrosion sealing performance and 100% solid-liquid volume ratio, so that the modified epoxy resin has extremely high toughness and bonding force after being cured, the shearing bonding strength with a pipe body and the sleeve-shaped clamp can reach more than 10MPa, the clamp is a pressure element and can bear 10MPa of internal pressure, the integral reinforcing structure can deform with the pipe in a cooperative manner, and simultaneously, the mechanical stress of a defect point can be transmitted extremely well, so that the corroded pipe can be repaired permanently. China utility model patent application 201010204651.4 discloses a reinforcement sleeve perfusion device of steel pipeline and filling method thereof, the reinforcement sleeve is by last arc sleeve and lower arc sleeve closed consolidation for cylindric reinforcement sleeve, reinforcement sleeve suit is on the steel pipeline by the reinforcement and leave the annular space clearance between the two, the injection device who is equipped with resin material is connected on the telescopic filling opening of reinforcement carries out the resin and pours into, it sucks to set up the installation vacuum pump on the telescopic overflow outlet of reinforcement, make resin material pour under certain vacuum condition, bubble in the resin material in avoiding or reducing the annular space, to the sealed and pressure-bearing effect by the reinforcement steel pipeline of reinforcement sleeve to guaranteeing the installation, nevertheless this technical scheme has following defect: 1. resin materials are injected in a vacuum pump suction mode, due to the fact that the positions of an injection opening and an overflow opening of a reinforcing sleeve injection device are set, after construction, the resin materials at two ends of a reinforcing sleeve can not be uniformly and completely filled, and gaps are left, the two sides of a reinforcing sleeve clamp of the technical scheme need to be sealed by strong sealant to prevent air leakage, and due to the existence of high-strength sealant, after grease injection construction is finished, whether construction conditions such as air bubbles and gaps exist or not after grease injection solidification can not be checked through the gaps between the clamps at the two sides and a pipe body; 2. the special-shaped oil cap is not suitable for the special-shaped defects of a steel pipeline, for example, the oil cap stealing treatment aiming at the oil pipeline, the oil pipeline has different numbers of oil cap stealing caps, during construction, a special-shaped cover needs to be installed on the oil cap stealing cap, after the special-shaped cover covers the oil cap stealing cap, a certain gap exists between the special-shaped cover and the oil cap stealing cap, a vacuumizing grease injection mode cannot fill a plurality of gap spaces between the oil cap stealing caps with the same height or different heights, and the grease injection reinforcing effect cannot be achieved; 3. the vacuumizing and grease injecting mode may bring bubbles into the resin material, so that the bubbles exist in the finished resin material at the later stage, the pressure of the steel pipeline is unbalanced, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect and problem of prior art, the utility model aims to solve the technical problem that a pipeline reinforcement device is provided.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pipeline reinforcement device, is including being divided into arc sleeve and lower arc telescopic anchor clamps sleeve, go up arc sleeve and pass through sealing bolt fixed connection down between the arc sleeve, set up the filling opening down on the arc sleeve, upward set up at least one overflow outlet on the arc sleeve.

In the above technical scheme, the clamp sleeve is provided with a convex cover, and the top end of the convex cover is provided with an overflow outlet.

In the technical scheme, the clamp sleeve is sleeved on the steel pipeline, and an annular space is formed between the clamp sleeve and the steel pipeline.

The pipeline reinforcing method used by the device comprises the following steps:

q1, arranging a pipeline reinforcing device at the pipe body part needing to be reinforced of the steel pipeline, and sealing two ends of a clamp sleeve of the reinforcing device by using a rubber sealing tape;

q2, the resin material filled in the injection device is injected into the annular space of the pipeline reinforcing device from the lowest end position of the clamp of the reinforcing device through the injection device at one time, the gas in the annular space extruded by the resin material is discharged from the clamp overflow outlet of the reinforcing device until the resin material is discharged from the clamp overflow outlet of the reinforcing device, and the injection port of the injection device is provided with a 100-mesh filter screen.

Q3, removing the rubber sealing belt, and performing anti-corrosion treatment on the fixture sleeve of the reinforcing device and the steel pipeline.

In the technical scheme, before Q1, the anticorrosive coating at the defective part of the steel pipeline needs to be removed.

In the technical scheme, before Q1, after the anticorrosive coating is removed, the metal surface of the steel pipeline is subjected to rough treatment, and sand blasting treatment or manual polishing treatment is adopted.

In the technical scheme, before Q1, after manual polishing treatment, an anchor line machine is adopted for anchor line treatment, and the metal surface of the steel pipeline after sand blasting treatment is not subjected to anchor line treatment by the anchor line machine any more

In the above-described embodiment, before Q2, the metal surface of the jig sleeve of the reinforcement device is subjected to sand blasting.

The utility model discloses a method low risk operation, permanent restoration, the operation is safe, and the activity duration is short, adopts the injection equipment of autonomous design, can pour into 10 kilograms of epoxy resin into at fastest every minute, and the efficiency of construction is high, and anchor clamps are annotated epoxy reinforcement operation and only need 3-4 hours; permanent reinforcement, defect point will obtain very high compressive strength and stable mechanical properties after the reinforcement, annotate the material and begin from anchor clamps lowermost extreme position, effectively emptied the air between anchor clamps and the body for body, resin and anchor clamps perfect combination have been in an organic whole. The integral reinforcing structure can deform with the pipeline in a coordinated mode, meanwhile, the mechanical stress of defect points can be transmitted excellently, the environmental adaptability is strong, and the construction can be carried out smoothly under the environment of minus 50 ℃ to 50 ℃.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural section view of the present invention.

Wherein: the device comprises an upper arc-shaped sleeve, an overflow outlet 11, a raised cover 12, a lower arc-shaped sleeve 2, an injection opening 21, a sealing bolt 3, a steel pipeline 4 and an annular space 5.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

According to fig. 1, as the embodiment shows a pipeline reinforcement device, including being divided into arc sleeve and lower arc sleeve's anchor clamps sleeve, go up through sealing bolt fixed connection between arc sleeve and the lower arc sleeve, set up the filling opening on the arc sleeve down, go up and set up at least one overflow mouth on the arc sleeve, anchor clamps sleeve sets up protruding cover, and protruding cover top sets up the overflow mouth, and anchor clamps sleeve cup joints on the steel pipeline, forms annular space between anchor clamps sleeve cover and the steel pipeline.

The pipeline reinforcing method adopting the pipeline reinforcing device comprises the following steps:

the method comprises the steps of positioning a steel pipeline which has defects and needs to be repaired, firstly removing an anticorrosive coating at the defect part of the steel pipeline, removing an original anticorrosive coating of the pipeline in a repair area by tools such as a planer tool, avoiding damaging the pipeline in the removing process, removing an original epoxy powder coating or a bottom anticorrosive coating of a repair section by using an electric angle grinder, and removing the metal of a pipe body without damaging the anticorrosive coating in the removing process.

After the anticorrosive coating is removed, the metal surface of the steel pipeline is subjected to sand blasting treatment, the Sa2.5 grade specified in GB 8923 is achieved, the anchor line depth is 40-100 mu m, and the original pipeline anticorrosive coating within 50mm of each width on two sides of the defect is subjected to sand blasting treatment to achieve the Sa2.5 grade.

When mechanical blasting cannot be performed, manual sanding processing to ST3.0 level and then anchor line processing by an anchor line machine may be employed. The defect part after the surface treatment of the pipeline can have the residue of an original epoxy powder anticorrosive coating or an original liquid epoxy anticorrosive coating, and the residue of PE, a heat shrinkable sleeve, coal tar enamel, asphalt and various adhesives is avoided.

If the surface of the pipe body is not clean, acetone can be used for cleaning.

After the preparation process is completed, step Q1, installing a pipeline reinforcing device at the position of the pipe body of the steel pipeline needing to be reinforced, wherein the length of the pipeline reinforcing sleeve clamp is 1000mm, the weight of a single piece is 100 and 600KG, the installation is manually assisted by a hoisting machine, and the safety distance between the sleeve clamp and the accompanying pipeline optical cable is ensured in the hoisting process; after the sleeve clamp is installed and positioned, the annular gap of the sleeve clamp is adjusted by using an adjusting bolt, two ends of a clamp sleeve of the reinforcing device are sealed by using a rubber sealing strip, and before the pipeline reinforcing device is installed, the sand blasting treatment is carried out on the metal surface of the sleeve clamp of the pipeline reinforcing device to reach Sa2.5 grade specified in GB 8923, and the anchor line depth is 40-100 mu m.

Q2, injection apparatus through independently designing, the filling opening sets up 100 mesh filter screens, all can be discharged from the feed inlet after filtering rupture when the bubble that will exist passes through the filter screen, the resin material of dress in the filling pump begins from the anchor clamps lowermost extreme position of reinforcing means, in the annular space of disposable filling opening inflow pipeline reinforcing means from the filling pump, the gaseous anchor clamps overflow outlet discharge from reinforcing means of resin material extrusion annular space, all air of evacuation, discharge until the resin material from the anchor clamps overflow outlet of reinforcing means, make the steel pipeline body, epoxy and the perfect combination of sleeve anchor clamps are in an organic whole. The whole reinforcing structure can deform in coordination with the pipeline, and meanwhile, the mechanical stress of the defect point can be well transmitted.

Q3 gets rid of the rubber sealing area, carries out anticorrosive treatment to reinforcement device anchor clamps sleeve, steel pipeline, and the liquid epoxy coating of solventless quality that will allocate is at sleeve anchor clamps and the steel pipe surface that has stripped the anticorrosive coating, and the reply bolt position carries out thickening treatment in the application process, prevents that the leak source from producing. And after the coating is dried completely, performing electric spark detection on the sleeve clamp and the anticorrosive coatings of the pipelines on the two sides by adopting 5000V voltage, timely repairing leakage points, and detecting the leakage points again after the repaired area is dried completely until the anticorrosive coating completely passes the electric spark detection.

And finally, after the reinforcing construction of the steel pipeline is completed and no leakage point of the excavated pipeline section is confirmed, fine sand or plain soil is adopted for layered tamping and backfilling, the site is cleaned, the original landform is restored, and the buried depth of the pipeline is ensured to meet the design requirement.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pipeline reinforcement device is characterized in that: including being divided into arc sleeve and lower arc telescopic anchor clamps sleeve, go up arc sleeve and pass through sealing bolt fixed connection down between the arc sleeve, set up the filling opening down on the arc sleeve, it sets up at least one overflow outlet on the arc sleeve to go up.

2. The pipe reinforcing apparatus of claim 1, wherein: the fixture sleeve is provided with a raised cover, and the top end of the raised cover is provided with an overflow outlet.

3. The pipe reinforcing apparatus of claim 2, wherein: the clamp sleeve is sleeved on the steel pipeline, and an annular space is formed between the clamp sleeve and the steel pipeline.