阅读说明：本技术 一种除尘管道弯头部的在线耐磨修复方法及系统 (Online wear-resistant repair method and system for elbow part of dust removal pipeline ) 是由 刘安民 冯伟 许佩 冯林 杨卫锋 王杰 党延民 于 2021-09-17 设计创作，主要内容包括：本发明公开了一种除尘管道弯头部的在线耐磨修复方法及系统,在弯头的破损处设置挡料层,挡料层完全覆盖在破损处上；将预制好的储料盒固定在挡料层周围的弯头外壁上,使挡料层完全位于储料盒的储料空间内；通过注料管向储料盒内注入耐磨浆料,直至耐磨浆料充满储料盒；待储料盒内的耐磨浆料凝固后,完成对弯头的破损处的修复；本发明通过在弯头的破损处覆盖挡料层,再在挡料层外围固定安装储料盒,最后向储料盒内注入耐磨浆料,实现在破损处外围覆盖高强耐磨料,可以抵挡铁粉或铁渣的长期冲击,即使在高强耐磨料上冲击出凹陷,铁粉或铁渣也会存留堆积在凹陷内部,进而又通过堆积的铁粉或铁渣抵挡管道内铁粉或铁渣的冲击。(The invention discloses an online wear-resistant repair method and system for a dust removal pipeline elbow part, wherein a material blocking layer is arranged at a damaged part of the elbow, and the material blocking layer completely covers the damaged part; fixing the prefabricated material storage box on the outer wall of the elbow around the material blocking layer, so that the material blocking layer is completely positioned in the material storage space of the material storage box; injecting wear-resistant slurry into the storage box through the material injection pipe until the storage box is filled with the wear-resistant slurry; after the wear-resistant slurry in the storage box is solidified, repairing the damaged part of the elbow; according to the invention, the material blocking layer covers the damaged part of the elbow, the material storage box is fixedly arranged on the periphery of the material blocking layer, and finally the wear-resistant slurry is injected into the material storage box, so that the high-strength wear-resistant material covers the periphery of the damaged part, the long-term impact of iron powder or iron slag can be resisted, even if a pit is punched on the high-strength wear-resistant material, the iron powder or the iron slag can be remained and accumulated in the pit, and the impact of the iron powder or the iron slag in the pipeline can be resisted through the accumulated iron powder or the iron slag.)

1. An online wear-resistant repair method for a dust removal pipeline elbow part is characterized by comprising the following steps:

arranging a material blocking layer (5) at a damaged position (7) of the elbow (1), wherein the material blocking layer (5) completely covers the damaged position (7);

fixing the prefabricated storage box (4) on the outer wall of the elbow around the material blocking layer (5) to ensure that the material blocking layer (5) is completely positioned in the storage space of the storage box (4);

injecting wear-resistant slurry into the storage box (4) through the material injection pipe (2) until the storage box (4) is filled with the wear-resistant slurry;

and after the wear-resistant slurry in the storage box (4) is solidified, repairing the damaged part (7) of the elbow (1).

2. The online abrasion-resistant repair method for the elbow part of the dust removal pipeline as claimed in claim 1, wherein when the damaged part (7) of the elbow (1) in the dust removal pipeline is under negative pressure, the material blocking layer (5) is a flexible material blocking layer, and the area of the material blocking layer (5) is larger than that of the damaged part (7).

3. The online abrasion-resistant repair method for the elbow part of the dust removal pipeline as claimed in claim 1, wherein when the broken part (7) of the elbow (1) in the dust removal pipeline is in positive pressure, the material blocking layer (5) is a hard material blocking layer, and the area of the material blocking layer (5) is larger than that of the broken part (7).

4. The on-line wear-resistant repair method for the elbow part of the dust removal pipeline as claimed in claim 3, wherein when the material blocking layer (5) is a hard material blocking layer, the hard material blocking layer is a steel plate.

5. The on-line wear-resistant repair method for the elbow part of the dust removal pipeline as claimed in claim 4, wherein when the hard blocking layer is a steel plate, the steel plate is spot-welded on the outer wall of the elbow (1).

6. The online abrasion-resistant repair method for the elbow part of the dust removal pipeline as claimed in any one of claims 2 to 5, wherein the step of fixing the prefabricated storage box (4) on the outer wall of the elbow around the material blocking layer (5) comprises the following steps:

and continuously welding the contact edge of the storage box (4) and the outer wall of the elbow to ensure that the storage box (4) is hermetically connected with the outer wall of the elbow.

7. The on-line wear-resistant repair method for the elbow part of the dust removal pipeline as claimed in claim 6, wherein the wear-resistant slurry is made of high-strength wear-resistant material.

8. The online wear-resistant repair system for the elbow part of the dust removal pipeline is characterized by comprising a material blocking layer (5) which is used for completely covering the damaged part of the elbow;

the material storage box (4) with an opening at one side is further included, the material storage box (4) is used for covering the outer part of the material blocking layer (5), and the edge of the opening side of the material storage box is connected with the outer wall of the elbow in a sealing mode so as to form a closed space inside the material storage box (4);

and the closed space is completely filled with high-strength wear-resistant materials formed by solidifying the wear-resistant slurry.

9. The on-line abrasion-resistant repair system for the elbow part of the dust removal pipeline as claimed in claim 8, wherein the material blocking layer (5) is a flexible material blocking layer when the broken part of the elbow in the dust removal pipeline is under negative pressure.

10. The on-line abrasion-resistant repair system for the elbow part of the dust removal pipeline as claimed in claim 8 or 9, wherein the material blocking layer (5) is a hard material blocking layer when the breakage of the elbow in the dust removal pipeline is positive pressure.

Technical Field

The invention belongs to the technical field of dust removal pipeline repair, and particularly relates to an online wear-resistant repair method and system for a dust removal pipeline elbow.

Background

The dust removal pipeline is a preset pipeline which is connected to the dust removal equipment and used for guiding dust, smoke dust or dust and the like to flow, and a common dust removal pipeline is a steel pipe or an iron pipe and is arranged in a workshop according to a preset trend according to a specific structure of the workshop. In the iron and steel factory, except the dust in the dust removal pipeline, still can contain a small amount of iron powder or scum, these iron powder or scum circulate along with the dust removal pipeline, when circulating to dust removal pipeline elbow department, because need turn to, iron powder or scum can lead to the fact the impact to the outer curved portion of elbow, long-time impact can lead to the outer curved portion of dust removal pipeline to appear damaged, the leak appears in the outer curved portion of broken back elbow, dust, iron powder and scum etc. can follow the leak and fly out, and then can cause the pollution to the surrounding environment.

When a damaged elbow hole is found, a steel plate is welded on the elbow hole to block the elbow hole in the conventional repairing method. However, after the dust removing equipment is used for a period of time, the leak can appear, and if the leak needs to be continuously repaired, the operation is repeated, so that the production cost is increased, and the environmental pollution degree is also increased.

Disclosure of Invention

The invention aims to provide an online wear-resistant repair method and system for a dust removal pipeline elbow part, which can be used for a long time by adding a repair layer outside a leak, and avoids frequently repairing the leak.

The invention adopts the following technical scheme: an online wear-resistant repair method for a dust removal pipeline elbow part comprises the following steps:

arranging a material blocking layer at the damaged position of the elbow, wherein the material blocking layer completely covers the damaged position;

fixing the prefabricated material storage box on the outer wall of the elbow around the material blocking layer, so that the material blocking layer is completely positioned in the material storage space of the material storage box;

injecting wear-resistant slurry into the storage box through the material injection pipe until the storage box is filled with the wear-resistant slurry;

and after the wear-resistant slurry in the storage box is solidified, repairing the damaged part of the elbow.

Further, when the damaged department of elbow is the negative pressure in dust removal pipeline, the fender layer is flexible fender layer, and the area that keeps off the material layer is greater than the area of damaged department.

Furthermore, when the damaged part of the elbow is in positive pressure in the dust removal pipeline, the material blocking layer is a hard material blocking layer, and the area of the material blocking layer is larger than that of the damaged part.

Further, when the material blocking layer is a hard material blocking layer, the hard material blocking layer is a steel plate.

Further, when the hard material blocking layer is a steel plate, the steel plate is spot-welded on the outer wall of the elbow.

Further, fix the elbow outer wall around the fender material layer with prefabricated storage box and include:

and the contact edge of the storage box and the outer wall of the elbow is continuously welded to ensure that the storage box is hermetically connected with the outer wall of the elbow.

Further, the wear-resistant slurry is made of high-strength wear-resistant materials.

The other technical scheme of the invention is as follows: an online wear-resistant repair system for a dust removal pipeline elbow part comprises a material blocking layer, wherein the material blocking layer is used for completely covering a damaged part of the elbow;

the material storage box is provided with an opening at one side and used for covering the outer part of the material blocking layer, and the edge of the opening side of the material storage box is hermetically connected with the outer wall of the elbow so as to form a closed space in the material storage box;

the closed space is completely filled with high-strength wear-resistant materials formed by the solidified wear-resistant slurry.

Furthermore, when the damaged position of the elbow is negative pressure in the dust removal pipeline, the material blocking layer is a flexible material blocking layer.

Further, when the damaged position of the elbow is in positive pressure in the dust removal pipeline, the material blocking layer is a hard material blocking layer.

The invention has the beneficial effects that: according to the invention, the material blocking layer covers the damaged part of the elbow, the material storage box is fixedly arranged on the periphery of the material blocking layer, and finally the wear-resistant slurry is injected into the material storage box, so that the high-strength wear-resistant material covers the periphery of the damaged part, the long-term impact of iron powder or iron slag can be resisted, even if a pit is punched on the high-strength wear-resistant material, the iron powder or the iron slag can be remained and accumulated in the pit, and the impact of the iron powder or the iron slag in the pipeline can be resisted through the accumulated iron powder or the iron slag.

Drawings

FIG. 1 is a reference diagram of the construction state of the online abrasion-resistant repair method for the elbow part of the dust removal pipeline.

Wherein: 1. bending the pipe; 2. a material injection pipe; 3. a material injection ball valve; 4. a storage box; 5. a material blocking layer; 6. a discharge ball valve; 7. a damaged part; 8. and (4) discharging the pipe.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

For the existing dust removal pipeline, the elbow of the existing dust removal pipeline is easy to damage and generate a leak at the outer bend due to the impact of iron powder or iron slag in the pipeline after being received for a long time. The common repairing method is to stop the machine, so that after the positive pressure or negative pressure in the dust removing pipeline disappears, an iron plate is welded on the leak hole, and the leak hole is sealed. However, the shutdown is liable to be in a shutdown state, and the production efficiency is affected. If the iron plate is directly welded without stopping, the dust removal pipeline is difficult to form complete sealing repair at the leak due to positive pressure or negative pressure in the dust removal pipeline. For example, when positive pressure exists in the dust removal pipeline, the leak outlet can generate pressure outside the pipeline, when iron of the pipeline is just melted during welding, the iron can be blown away by positive pressure wind power, welding is difficult to complete, and along with welding completion degree is higher and higher, when only a small gap is left to be welded at last, the gap is blown outwards like a high-pressure air gun, so that the final gap is difficult to seal. When the dust removal pipeline has negative pressure, the welding difficulty of the dust removal pipeline is the same as that of positive pressure, but the negative pressure is equivalent to a high-pressure air gun for blowing air into the pipeline, particularly a final gap, and sealing is difficult to realize.

The invention discloses an online wear-resistant repair method for a dust removal pipeline elbow, which comprises the following steps of: arranging a material blocking layer 5 at the damaged position of the elbow, wherein the material blocking layer 5 completely covers the damaged position; fixing the prefabricated storage box 4 on the outer wall of the elbow around the material blocking layer 5, so that the material blocking layer 5 is completely positioned in the discharging space of the storage box 4; injecting wear-resistant slurry into the storage box 4 through the material injection pipe 2 until the storage box 4 is filled with the wear-resistant slurry; and after the wear-resistant slurry in the storage box 4 is solidified, repairing the damaged part of the elbow.

According to the invention, the material blocking layer covers the damaged part of the elbow, the material storage box is fixedly arranged on the periphery of the material blocking layer, and finally the wear-resistant slurry is injected into the material storage box, so that the high-strength wear-resistant material covers the periphery of the damaged part, the long-term impact of iron powder or iron slag can be resisted, even if a pit is punched on the high-strength wear-resistant material, the iron powder or the iron slag can be remained and accumulated in the pit, and the impact of the iron powder or the iron slag in the pipeline can be resisted through the accumulated iron powder or the iron slag.

In the embodiment of the invention, when the damaged part of the elbow is negative pressure in the dust removing pipeline, the material blocking layer 5 is a flexible material blocking layer, and the area of the material blocking layer is larger than that of the damaged part. Specifically, the fiber bag can be used as a material blocking layer, and of course, the fiber bag is far larger than the leak to prevent the negative pressure from sucking the fiber bag into the dust removal pipeline from the leak.

In another embodiment, when the damaged part of the elbow in the dust removal pipeline is positive pressure, the material blocking layer 5 is a hard material blocking layer, and the area of the material blocking layer is larger than that of the damaged part. Specifically, when the material blocking layer 5 is a hard material blocking layer, the hard material blocking layer is a steel plate. When the hard material blocking layer is a steel plate, the steel plate is spot-welded on the outer wall of the elbow. As described above, since it is difficult to seal and weld the steel plate to the elbow completely without stopping the machine in the case of positive pressure, it is only necessary to spot-weld the steel plate to the elbow in this embodiment. This is because, in this embodiment, the wear-resistant slurry needs to be injected into the storage box 4, because the steel plate has completely covered the leak, most of the wind power has been reflected back to the dust removal pipeline, only some gaps exist between the steel plate and the elbow, because most of the wind power has been reflected back to the dust removal pipeline, the remaining wind power intensity has been greatly reduced, when the wear-resistant slurry flows into the storage box 4, and when the gaps are formed in the flow channels, the smaller wind power prevents the wear-resistant slurry from being injected into the dust removal pipeline, and as the wear-resistant slurry is injected more and more, the storage box 4 is filled up at last, and the wear-resistant material layer is formed on the periphery of the steel plate.

Preferably, the thickness of the abrasive-resistant layer needs to be larger than that of the steel plate, preferably close to the diameter of the elbow, so that the weight of the abrasive-resistant layer is guaranteed to be borne by the dust removal pipeline, the thickness of the abrasive-resistant layer is increased, and the impact resistance is improved.

In order to realize the better fixation of the wear-resistant material layer on the outer wall of the outer head, the contact edge of the storage box 4 and the outer wall of the elbow is continuously welded so as to ensure the sealing connection of the storage box 4 and the outer wall of the elbow. Through being connected of storage box 4 and elbow like this, increased the joint strength of wear-resisting material layer with the elbow, prevent that resistant abrasive material layer from droing from the elbow outer wall.

In this embodiment, the wear-resistant slurry is made of a high-strength wear-resistant material. The high-strength wear-resistant material is a special dry-mixed wear-resistant material which contains raw materials such as a composite additive, a high-molecular polymer and the like and has reasonable gradation through industrial production. The composite material has the characteristics of small wear loss, strong impact resistance, high compressive strength, convenience in construction and easiness in repair.

The invention also discloses an online wear-resistant repair system for the elbow part of the dust removal pipeline, which comprises a material blocking layer 5, wherein the material blocking layer 5 is used for completely covering the damaged part 7 of the elbow 1; the material storage box is characterized by further comprising a storage box 4 with an opening, wherein the opening of the storage box 4 is used for covering the outside of the material blocking layer 5, and the edge of the opening of the storage box is hermetically connected with the outer wall of the elbow 1 so as to form a closed space inside the storage box 4; the closed space is completely filled with high-strength wear-resistant materials formed by the solidified wear-resistant slurry.

Specifically, when the damaged department of elbow is the negative pressure in dust removal pipeline, keep off material layer 5 for flexible fender material layer, flexible fender material layer specifically can select fibre bag etc.. When the damaged department of elbow is the malleation in dust removal pipeline, keep off material layer 5 for the stereoplasm fender material layer, the stereoplasm keeps off the material layer and can be for steel sheet etc..

In addition, still be provided with notes material pipe 2 and discharging pipe 8 respectively on two relative curb plates of storage box 4, annotate material pipe 2 and be used for being connected with outside inlet pipe for wear-resisting thick liquids can enter into in the storage box 4. The discharge pipe 8 is used for detecting whether the wear-resistant slurry in the storage box 4 is filled.

In the embodiment of the present invention, the storage case 4 is fixed on the elbow 1, so the storage case 4 is composed of four side plates and a bottom plate, the tops of the four side plates are all connected with the outer wall of the elbow 1 in a sealing manner, the bottoms of the four side plates are all connected with the bottom plate in a sealing manner, and the adjacent edges of the four side plates are connected in a sealing manner, so as to ensure that the storage case 4 is an enclosed space.

In another embodiment, the magazine can be sealingly connected to a base plate by a circular plate, the upper end of which is cut to a shape adapted to the outer wall of the elbow 1 and sealingly connected to the outer wall of the elbow 1, and the lower end of which is sealingly connected to the base plate.

In conclusion, the shape of the storage box 4 is not limited to the above structure, and can be specifically designed according to the specific construction conditions on site, and only the requirement that the storage box 4 is connected with the elbow to form a closed space is met.

Specifically, install on annotating material pipe 2 and annotate material ball valve 3, install ejection of compact ball valve 6 on the discharging pipe 8. The injection ball valve 3 is used for adjusting the opening and closing of the injection pipe 2 and the injection speed. The tapping valve 6 is used to adjust the opening or closing of the tapping pipe 8. When the material is annotated to needs, open discharge valve 6, when wear-resisting thick liquids flowed out from discharging pipe 8, then showed that the storage box 4 has been filled, closed discharge valve 6 this moment, carried out pressurization slip casting through notes material pipe 2, further tamp the wearing layer, until accomplishing the slip casting in the storage box 4.