CN204201306U - A kind of gas under coal mine duplex coating spiral welded composite steel tube - Google Patents
A kind of gas under coal mine duplex coating spiral welded composite steel tube Download PDFInfo
- Publication number
- CN204201306U CN204201306U CN201420562034.5U CN201420562034U CN204201306U CN 204201306 U CN204201306 U CN 204201306U CN 201420562034 U CN201420562034 U CN 201420562034U CN 204201306 U CN204201306 U CN 204201306U
- Authority
- CN
- China
- Prior art keywords
- epoxy resin
- coal mine
- thickness
- zinc
- steel tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to pipeline of coal mine field, be specifically related to a kind of gas under coal mine duplex coating spiral welded composite steel tube, a kind of gas under coal mine duplex coating spiral welded composite steel tube, comprise body, soldered and welding outer hoop, it is characterized in that, it also comprises zinc-riched epoxy resin cladding and epoxy ceramic coating, described body by cold-rolled strip with while to another side corresponding sides overlap form hasp, its hasp place formed helical around welding outer hoop, soldered is formed between described welding outer hoop and body, described tube surfaces scribbles zinc-riched epoxy resin cladding, described zinc-riched epoxy resin cladding outside scribbles epoxy ceramic coating, described zinc-riched epoxy resin cladding thickness is 0.3-0.6mm, epoxy ceramic coating thickness is 0.4-0.8mm.It adopts the hoop formed at welding plate overlapping edges place, has the thickness more much bigger than welding plate, substantially increases the ring stiffness of tubing and resistance to negative pressure ability.It has easy to use, simple to operate, with low cost, and practicability is good.
Description
Technical field
The utility model relates to pipeline of coal mine field, is specifically related to a kind of gas under coal mine duplex coating spiral welded composite steel tube.
Background technique
For guaranteeing the safety that underground coal mine is produced, the methane gas in coal seam and tunnel need be extracted out.China is coal production state maximum in the world, has many big and small collieries, and pipeline is used in a large amount of the drawing out methane of annual needs.
The pipeline of current use is roughly divided into following several: (1) common steel tube; (2) dual anti-plastic tube; (3) plastic-coated steel; (4) Stainless Steel Tube.In above pipeline, Stainless Steel Tube is due to expensive, and use amount is few.Common steel tube is due to corrosion-resistant, and under the condition of underground coal mine humidity, be very easily corroded, working life is short, and weight is large, installs extremely inconvenient.Although dual anti-plastic tube has the advantages such as lightweight, corrosion-resistant, the intensity of plastic tube is much smaller than steel pipe, and price is higher.Plastics are covered steel tube surface owing to adopting simple leaching means of moulding by leaching plastic steel pipe, easily come off, and the weight of still reduction tubing not yet in effect, simple plastic coatings can not resist the electrochemical corrosion that down-hole pipe exists.
Model utility content
The purpose of this utility model is defect for prior art and deficiency, there is provided a kind of structure simple, a kind of gas under coal mine duplex coating spiral welded composite steel tube reasonable in design, easy to use, it adopts the hoop formed at welding plate overlapping edges place, there is the thickness more much bigger than welding plate, substantially increase the ring stiffness of tubing and resistance to negative pressure ability.It has easy to use, simple to operate, with low cost, and practicability is good.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of gas under coal mine duplex coating spiral welded composite steel tube described in the utility model, comprise body, soldered and welding outer hoop, it is characterized in that, it also comprises zinc-riched epoxy resin cladding and epoxy ceramic coating, described body by cold-rolled strip with while to another side corresponding sides overlap form hasp, its hasp place formed helical around welding outer hoop, soldered is formed between described welding outer hoop and body, described tube surfaces scribbles zinc-riched epoxy resin cladding, described zinc-riched epoxy resin cladding outside scribbles epoxy ceramic coating, described zinc-riched epoxy resin cladding thickness is 0.3-0.6mm, epoxy ceramic coating thickness is 0.4-0.8mm.
Further, the thickness of described cold tube rolling body is 0.1-15mm.
Further, described zinc-riched epoxy resin cladding thickness is 0.5mm.
Further, epoxy ceramic coating thickness is 0.6mm.
After adopting said structure, the utility model beneficial effect is:
(1) unique occlusion structure (as accompanying drawing 2) adds one side (pipe outer wall) welded structure, makes this pipeline in coal mine gas course of conveying, and because of geology change, the displacement of generation or stretching, occlusion portion, by extending, guarantees that again methane gas is not revealed simultaneously.
(2) pipeline adopts stainless steel material, improves pipeline life, has antistatic effect simultaneously.
(3) internal coated layer adopts zinc-riched epoxy resin, and the combination force of zinc-riched epoxy resin and steel is strong, and on the basis of antioxidant anticorrosive, greatly strengthen anti-potential corrosion ability.
(4) outside of internal coated layer is one deck epoxy ceramic coating, and this coating has very high intensity and wear resistance, when not only can resist conveying gas, and the abrasion of solid particulate matter, and also pipe outer surface also has stronger anti-wear damage capability.
(5) the duplex coating structure of tubing employing, internal coated layer is zinc-riched epoxy resin, outer covering layer adopts epoxy ceramic coating, and the anti-corrosion capacity substantially increasing pipeline is anti-, abrasive capacity and anti-wear damage capability, and tubing was greatly improved in the working life of down-hole.
(6) pipeline has the combination properties such as anticorrosion, fire-retardant and antistatic, improves pipeline safety in utilization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is weld schematic diagram of the present utility model.
Description of reference numerals:
1, body; 2, soldered; 3, zinc-riched epoxy resin cladding; 4, epoxy ceramic coating; 5, outer hoop is welded.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of gas under coal mine duplex coating spiral welded composite steel tube described in the utility model, comprise body 1, soldered 2 and welding outer hoop 5, it is characterized in that, it also comprises zinc-riched epoxy resin cladding 3 and epoxy ceramic coating 4, described body 1 by cold-rolled strip with while to another side corresponding sides overlap form hasp, its hasp place formed helical around welding outer hoop 5, soldered 2 is formed between described welding outer hoop 5 and body 1, described body 1 surface scribbles zinc-riched epoxy resin cladding 3, described zinc-riched epoxy resin cladding 3 outside scribbles epoxy ceramic coating 4.
Further, the thickness of described cold tube rolling body 1 is 2.5mm.
Further, described zinc-riched epoxy resin cladding 3 thickness is 0.5mm.
Further, epoxy ceramic coating 4 thickness is 0.6mm.
In use, steel plate thickness is that the tubing of 2.5mm carries out ring stiffness test to the utility model, and the same bore of ring stiffness numeric ratio, the butt-welded tubing of stack pile improve 2.1 times.
This tubing intercepts 600mm pipeline section, with same length, same to bore, has carried out corrosion-resistant comparative trial with the spiral welded pipe of the polyethylene plastic-coated of steel plate thickness.Sample is placed in simultaneously in the seal container of high humility, peracidity (or high alkalinity) atmosphere, within 100 days, detect the corrosion thickness of metal pipe-wall afterwards, find that tubing corrosion thickness of the present invention is only 24% of the corrosion thickness of common polythene plastic-coated spiral welded pipe, corrosion resistance increases substantially.
Its hoop of being formed at welding plate overlapping edges place of the utility model, has the thickness more much bigger than welding plate, substantially increases the ring stiffness of tubing and resistance to negative pressure ability.Compared with the spiral welded pipe of butt welding, identical at pipe diameter, when steel plate thickness is identical, the ring stiffness of this tubing can increase substantially with the ability of bearing external pressure; In other words, when the pipe diameter of requirement is identical with bearing external pressure ability (or ring stiffness), the thickness of steel plate needed for this tubing can significantly reduce, thus reduces the weight of tubing, not only provides cost savings, the difficulty of also significantly reduce tubing transport, installing.It has easy to use, simple to operate, with low cost, and practicability is good.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (4)
1. a gas under coal mine duplex coating spiral welded composite steel tube, comprise body (1), soldered (2) and welding outer hoop (5), it is characterized in that, it also comprises zinc-riched epoxy resin cladding (3) and epoxy ceramic coating (4), described body (1) by cold-rolled strip with while to another side corresponding sides overlap form hasp, its hasp place formed helical around welding outer hoop (5), soldered (2) is formed between described welding outer hoop (5) and body (1), described body (1) surface scribbles zinc-riched epoxy resin cladding (3), described zinc-riched epoxy resin cladding (3) outside scribbles epoxy ceramic coating (4), described zinc-riched epoxy resin cladding (3) thickness is 0.3-0.6mm, epoxy ceramic coating (4) thickness is 0.4-0.8mm.
2. a kind of gas under coal mine duplex coating spiral welded composite steel tube according to claim 1, is characterized in that: the thickness of described cold tube rolling body (1) is 0.1-15mm.
3. a kind of gas under coal mine duplex coating spiral welded composite steel tube according to claim 1, is characterized in that: described zinc-riched epoxy resin cladding (3) thickness is 0.5mm.
4. a kind of gas under coal mine duplex coating spiral welded composite steel tube according to claim 1, is characterized in that: epoxy ceramic coating (4) thickness is 0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562034.5U CN204201306U (en) | 2014-09-28 | 2014-09-28 | A kind of gas under coal mine duplex coating spiral welded composite steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562034.5U CN204201306U (en) | 2014-09-28 | 2014-09-28 | A kind of gas under coal mine duplex coating spiral welded composite steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201306U true CN204201306U (en) | 2015-03-11 |
Family
ID=52659268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420562034.5U Active CN204201306U (en) | 2014-09-28 | 2014-09-28 | A kind of gas under coal mine duplex coating spiral welded composite steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204201306U (en) |
-
2014
- 2014-09-28 CN CN201420562034.5U patent/CN204201306U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201420903Y (en) | Composite plastic tube with continuous steel mesh skeleton | |
| CN204201306U (en) | A kind of gas under coal mine duplex coating spiral welded composite steel tube | |
| CN203176563U (en) | Enhancing type spiral continuous welding coating composite steel tube for underground coal mine | |
| CN101158425A (en) | Steel lining ultra-high molecular mass polyethylene tube | |
| CN201531687U (en) | Ultra-high molecular weight polyethylene composite pipe | |
| CN107524865A (en) | Draw out methane under a kind of mine with duplex coating spiral welded composite steel tube | |
| CN203571251U (en) | Spiral winding rib enhancing steel tube | |
| CN202338700U (en) | High-performance internal anti-corrosion composite pipe | |
| CN204477525U (en) | A kind of threaded metal plastic composite pipe | |
| CN204083555U (en) | Steel wire mesh frame polyethylene compound pipe | |
| CN205669633U (en) | A kind of anticorrosion many abrasion-resistant metals composite steel tube | |
| CN203286154U (en) | Spiral reinforcing rib compound pipe | |
| CN201348118Y (en) | Acid-resistant pipeline | |
| CN202868104U (en) | Composite tube | |
| CN200989492Y (en) | Steel braided composite pipe | |
| CN200993270Y (en) | Steel-plastic composite pipe | |
| CN203963285U (en) | A kind of corrosion resistant type steel pipe | |
| CN212226263U (en) | High-performance compression-resistant wear-resistant composite steel pipe | |
| CN202215881U (en) | Metal composite Y-joint | |
| CN203892734U (en) | Carbon-steel helical weld pipe with reinforcing rib | |
| CN204164514U (en) | The composite pipe of the white fastener for connection of a kind of use | |
| CN203757204U (en) | Heat insulation delivery pipeline | |
| CN207673981U (en) | Fiberglass, steel pipe, polyethylene alloy multiple tube | |
| CN105135081A (en) | Combined seamless steel tube for pipelines | |
| CN203948827U (en) | A kind of multiple tube link that is suitable for operation in well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 117, Lu Tai Avenue, Zibo high tech Zone, Shandong Province Patentee after: Shandong Jincheng LIAN pipe industry Limited by Share Ltd Address before: No. 117, Lu Tai Avenue, Zibo high tech Zone, Shandong Province Patentee before: SHANDONG LIANCHUANG PIPE INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |