CN203641699U - Stainless steel reinforcing rib spiral gas drainage pipe - Google Patents
Stainless steel reinforcing rib spiral gas drainage pipe Download PDFInfo
- Publication number
- CN203641699U CN203641699U CN201320852504.7U CN201320852504U CN203641699U CN 203641699 U CN203641699 U CN 203641699U CN 201320852504 U CN201320852504 U CN 201320852504U CN 203641699 U CN203641699 U CN 203641699U
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- stainless steel
- stiffening rib
- reinforcing rib
- gas drainage
- drainage pipe
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Abstract
The utility model discloses a stainless steel reinforcing rib spiral gas drainage pipe. The pipe comprises a pipe body formed by a stainless steel plate through welding spirally. The welding line of the pipe body is provided with a spiral dome-shaped reinforcing rib which is along the direction of the welding line and protrudes outwardly. The reinforcing rib is formed by engaging and lapping of the two edges of the stainless steel plate along the length direction, wherein one edge of the stainless steel plate arches upwards to form a groove while the other edge of the stainless steel plate has a flanging structure which bends inwards and has a shape matched with that of the groove. The inner surfaces of the two edges forming the reinforcing rib are attached together to make the inner wall of the pipe body smooth and free of gap. The reinforcing rib and the pipe body are molded integrally during the welding. According to the utility model, the ring stiffness of the gas drainage pipe is increased; the windage resistance and coal ash adsorption are reduced; the low energy consumption, flame retardant property, and antistatic performance are guaranteed; the attachment of the inner surfaces of the reinforcing rib ensures the interior smoothness of the pipe body and also makes positioning more accurate and reliable; and moreover, the reinforcing rib and the pipe body are molded integrally during the welding so that the manufacture difficulty level is relatively low and the manufacture price is lower.
Description
Technical field
The invention belongs to pipe-type technical field, specifically special stainless steel stiffening rib helix gas drainage pipe under a kind of coal mine.
Background technique
Helix gas drainage pipeline is widely used in the fields such as down-hole gas sucking releasing at present, especially the ventilation system under coal mine, system etc. draws out methane, need to use a large amount of conveyance conduits, current conveyance conduit adopts common steel tube, Stainless Steel Tube, seamless steel pipe, PE pipe, pvc pipe or Glass Steel Tube mostly.Common steel tube is not corrosion-resistant, and working life is short; Although seamless steel pipe intensity is large, while installation, labor intensity is large and because colliery subsurface environment is severe, common welded tube or seamless steel pipe be easily corroded and quality larger, installation cost is high; Although PE pipe, pvc pipe or Glass Steel Tube cost are lower, anti-electrostatic fire retardant is poor and not lasting, and in the time of fed sheet of a media, easy and pipe material inner wall friction generation spark, causes certain threat to safety in production; The spiral welded pipe that existing stainless-steel cold-rolling coil of strip is made has overcome the shortcomings such as original inorganic glass-fiber reinforced plastic poor toughness, fragility are large, yielding, damp suction surface halide accumulation, poor water resistance, and the shortcoming such as seamless steel pipe weight is large, installation difficulty is high, poor water resistance, corrosion-resistant, wall unevenness are even, and PE pipe, pvc pipe under moist hot environment easily aging, under northern cold cold environment pipe shaft easily break, the shortcoming such as poor fire.At present Stainless Steel Tube because of its cost high, in gas drainage system of coal mine, there is no extensive use, but Stainless Steel Tube has the irreplaceable advantage of other pipeline, can thoroughly solve the fire-retardant and anlistatig requirement of pipes for mining, and itself there is corrosion resistance and can adapt to the complex environment under ore deposit.
Domestic existing steel helix gas drainage pipe, is mostly plain carbon steel helix gas drainage pipe at present.Stainless Steel Tube mostly is weldless tube and straight-seam pipes, weldless tube complex manufacturing, and cost is high, and size of pipe and tubing limits to some extent; Straight-seam pipes does not reach the requirement of strength drawing out methane under negative pressure work.Because the intensity of the thin-walled helix gas drainage pipe in existing market does not reach the requirement of negative pressure work, be only applicable to positive airway pressure, fluid conveying use, easily inhale flat distortion for negative pressure work, and the cost of heavy wall helix gas drainage pipe is higher, therefore helix gas drainage pipe is not widely used in gas drainage system of coal mine.
Notice of authorization number is that the utility model patent of CN202195180 U discloses a kind of stainless steel stiffening rib spiral welded pipe, although at the external stiffening rib that is added with of Stainless Steel Tube, but its internal surface has groove, so easily adsorb coal dust, thereby increase the windage drawing out methane, increased energy consumption, and the coal dust of absorption can affect flame retarding and the antistatic behaviour of Stainless Steel Tube, thereby can have potential safety hazard in using under coal mine.
Application publication number is that the patent of invention of CN103195988A discloses a kind of mining gas discharging pipe and manufacture method thereof, its adjacent steel band is that a steel band carries out flange processing and carries out flange overlap joint with next steel band and process, carry out spiral winding is welded simultaneously, the length that described flange is upwards dug is very short, just for convenient welding designs, the body finally forming has inside and outside two weld seams, and the complex process of wherein welding in body is not easy operation.
Summary of the invention
The present invention, for addressing the above problem, provides a kind of stainless steel stiffening rib helix gas drainage pipe, be added with spiral helicine vault type stiffening rib, and inboard wall of tube body is smooth without groove at the spiral weld place of gas drainage pipe body.
Technological scheme provided by the invention is: a kind of stainless steel stiffening rib helix gas drainage pipe, comprise the body being formed by corrosion resistant plate spiral welded, the weld joint of described body has one along weld seam trend and to the helical vault type stiffening rib of outer process, this stiffening rib is formed by the mutual interlock overlap joint in both sides along its length of corrosion resistant plate, wherein formation groove upwards arches upward on one side of corrosion resistant plate, another side has the turnup structure that curves inwardly and match with described groove shapes, form that the groove of this stiffening rib and the internal surface of turnup structure are bonded to each other so that inboard wall of tube body is smooth without groove, one-body molded when this stiffening rib and pipe welding, only at a weld seam of the outside formation of body.
As a kind of optimal way, the cross section of described stiffening rib is triangle, circular arc, rectangle or trapezoidal.
As a kind of optimal way, described corrosion resistant plate is zinc-plated corrosion resistant plate.
Compared with prior art, the present invention has following advantage:
(1) be added with helical stiffening rib at the spiral weld place of body, thereby improve the ring stiffness of gas drainage pipe, therefore under same negative pressure operating conditions and meet coal mine gas releasing pipe performance index require prerequisite under, can reduce the thickness of gas extraction tube wall, in negative pressure work, easily inhaled the problem of flat distortion thereby solved thin-walled gas drainage pipe, and saved cost;
(2) stiffening rib is formed by the mutual interlock overlap joint in both sides along its length of corrosion resistant plate, inboard wall of tube body is smooth, no-welding-seam, thereby reduced windage and the absorption to coal ash, ensured low energy consumption, flame retarding and anti-static electricity property, the operational safety under coal mine is higher;
(3) stiffening rib internal surface the smooth of body inside that not only ensured bonded to each other, can also play the effect of location, make location more accurately, reliable, and the structure of this mutual interlock further strengthened the structural strength of stiffening rib, is particularly useful for the place that requirements for pipes is higher;
(4) one-body molded when stiffening rib and pipe welding, only, in body outside weldings, manufacture difficulty is lower, and technique is simpler, and manufacturing price is cheaper.
Brief description of the drawings
Fig. 1 is that the present invention is the overall structure schematic diagram of triangular-section stiffening rib;
Fig. 2 is the structural representation of intermediate cam tee section stiffening rib of the present invention;
Fig. 3 is another structural representation of intermediate cam tee section stiffening rib of the present invention;
Fig. 4 is the structural representation of circular section stiffening rib in the present invention;
Fig. 5 is the structural representation of trapezoid cross section stiffening rib in the present invention.
In figure: 1, body, 2, stiffening rib, 3, weld seam.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the invention provides a kind of stainless steel stiffening rib helix gas drainage pipe, body is formed through spiral welded by corrosion resistant plate, and corrosion resistant plate is preferably zinc-plated corrosion resistant plate, fire-retardant, corrosion-resistant.The weld joint of its middle tube body has one along weld seam trend and to the helical vault type stiffening rib of outer process, this stiffening rib is formed by the mutual interlock overlap joint in both sides along its length of corrosion resistant plate, one-body molded when this stiffening rib and pipe welding, only in body outside weldings, this integrated preparation process is simple to operate, manufacture difficulty reduces, and can make the fabricating cost of helix gas drainage pipe greatly reduce.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the cross section of stiffening rib can be triangle, circular arc, rectangle or trapezoidal, the mutual interlock overlap joint in both sides along its length by corrosion resistant plate forms, the groove of the above-mentioned shape of formation that wherein upwards arches upward on one side of corrosion resistant plate, another side has the turnup structure that curves inwardly and match with described groove shapes, forms that the groove of this stiffening rib and the internal surface of turnup structure are bonded to each other so that inboard wall of tube body is smooth without groove.Stainless-steel sheet is in the time of cold roll forming, and groove and turnup structure are formed by special dies compacting, then, in the time of spiral welded, ensures the accurate docking on both sides, and the internal surface on both sides is bonded to each other, then in body outside by pipe welding, only stay an outside weld seam.The outside like this stiffening rib forming can provide support for body, improves the anti-negative pressure ability of body, thereby thereby the wall thickness that can reduce body reduces the cost of the manufacturing; And in stiffening rib, two sides fits and can play the effect of location, and ensure the smooth of body inside, thereby the absorption that can reduce dust prevented mining stainless steel stiffening rib helix gas drainage pipe fire-retardant and antistatic aspect hidden danger, and the structure of this mutual interlock further strengthened the structural strength of stiffening rib, be particularly useful for the place that requirements for pipes is higher.
In Fig. 2 and Fig. 5, turnup structure is only in the bottom laminating of groove, and fitting area is little, and manufacture difficulty is low, the ability relative mistake of its anti-negative pressure and location some, be applicable to some places lower to requirements for pipes; In Fig. 3 and Fig. 4, the fitting area of flange and groove structure increases, and manufacture difficulty is relatively high, and its anti-negative pressure and stationkeeping ability are stronger, are suitable for the place higher to requirements for pipes.
Claims (3)
1. a stainless steel stiffening rib helix gas drainage pipe, comprise the body being formed by corrosion resistant plate spiral welded, it is characterized in that: the weld joint of described body has one along weld seam trend and to the helical vault type stiffening rib of outer process, this stiffening rib is formed by the mutual interlock overlap joint in both sides along its length of corrosion resistant plate, wherein formation groove upwards arches upward on one side of corrosion resistant plate, another side has the turnup structure that curves inwardly and match with described groove shapes, form that the groove of this stiffening rib and the internal surface of turnup structure are bonded to each other so that inboard wall of tube body is smooth without groove, one-body molded when this stiffening rib and pipe welding, only at a weld seam of the outside formation of body.
2. stainless steel stiffening rib helix gas drainage pipe according to claim 1, is characterized in that: the cross section of described stiffening rib is triangle, circular arc, rectangle or trapezoidal.
3. stainless steel stiffening rib helix gas drainage pipe according to claim 1 and 2, is characterized in that: described corrosion resistant plate is zinc-plated corrosion resistant plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852504.7U CN203641699U (en) | 2013-12-23 | 2013-12-23 | Stainless steel reinforcing rib spiral gas drainage pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852504.7U CN203641699U (en) | 2013-12-23 | 2013-12-23 | Stainless steel reinforcing rib spiral gas drainage pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641699U true CN203641699U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320852504.7U Withdrawn - After Issue CN203641699U (en) | 2013-12-23 | 2013-12-23 | Stainless steel reinforcing rib spiral gas drainage pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727319A (en) * | 2013-12-23 | 2014-04-16 | 山西中通管业有限公司 | Stainless steel reinforcing rib spiral gas drainage pipe |
-
2013
- 2013-12-23 CN CN201320852504.7U patent/CN203641699U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727319A (en) * | 2013-12-23 | 2014-04-16 | 山西中通管业有限公司 | Stainless steel reinforcing rib spiral gas drainage pipe |
| CN103727319B (en) * | 2013-12-23 | 2017-11-21 | 山西中通管业有限公司 | Stainless steel reinforcement helix gas drainage pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20171121 |
|
| AV01 | Patent right actively abandoned |