CN207034433U - Spiral two peak structure bellows - Google Patents
Spiral two peak structure bellows Download PDFInfo
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- CN207034433U CN207034433U CN201720678911.9U CN201720678911U CN207034433U CN 207034433 U CN207034433 U CN 207034433U CN 201720678911 U CN201720678911 U CN 201720678911U CN 207034433 U CN207034433 U CN 207034433U
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Abstract
It the utility model is related to spiral two peak structure bellows, the bellows includes outer layer, the hollow enhancement layer of dual waves and internal layer, outer layer is crest and trough interphase structure and along the setting in spiral distribution of bellows axial direction, internal layer is cylindrical shape, the outer surface of internal layer is fixedly connected with the trough inner surface of outer layer, a helical form cavity is surrounded between inner layer outer surface and the crest inner surface of outer layer, the hollow enhancement layer of dual waves is helical form and is arranged in helical form cavity, the hollow enhancement layer of dual waves includes big crest layer, the small crest layer being sheathed in big crest layer and the connection wall being connected between big crest layer and small crest layer bottom both sides, big crest layer outer surface is fixedly connected with the crest inner surface of outer layer, the inner surface of connection wall is fixedly connected with the outer surface of internal layer.The bellows not only has more excellent compression strength, anti-destructive and ring rigidity, and big crest layer and small crest layer play humidification jointly, substantially prolongs service life.
Description
Technical field
Bellows field is the utility model is related to, more particularly to a kind of spiral two peak structure bellows.
Background technology
The tubing in the fields such as draining blowdown at present is generally steel plastic compount helical bellows and HDPE double-wall corrugated pipes, wherein
The shortcomings that following be present in steel plastic compount helical bellows：1st, the cementability of steel and plastics is poor, and in process, steel band is present
Great internal stress, tubing is caused after outdoor placement certain time, because of the influence for the factor such as expand with heat and contract with cold, steel modeling occurs serious
Segregation phenomenon, so as to cause tubing after buried, its ring stiffness degradation, cause engineering accident；2nd, it is resistance to due to steel band
Corrosivity is poor, is producing and in work progress, is easily causing steel band corrosion, is causing engineering accident so as to destroy tubing；3rd, impact
Poor performance, when by external impacts, steel modeling is easily layered steel-plastics composite pipe；4th, anti-destructive is poor, is at tubing crest
Unicast peak structure, as long as being destroyed at crest by external force, then aqueous or foreign matter will enter ripple intracavitary, corrode in steel band and destruction
Layer, ultimately cause the overall destruction of tubing.
The shortcomings that following be present in HDPE double-wall corrugated pipes：1st, at tubing crest it is unicast peak structure, while ectonexine wall thickness
Relatively thin, shock resistance and anti-destructive are poor；2 because being that unicast peak structure, tubing compressive property are poor at crest, therefore integral loop
Rigidity is relatively low, is usually no more than 8kN/m2, ring stiffness need to be such as improved, then needs that unit materials dosage is significantly increased, cost is higher；3、
Production equipment input is high, and usually more than the 8 of screw thread bellows kind equipment times, while production more heavy caliber more has limitation, makes
Into production cost height；Diameter can not be produced at present by technology restriction more than 1500mm tubing simultaneously.
Utility model content
The purpose of this utility model is to overcome disadvantage mentioned above, there is provided a kind of spiral two peak structure bellows, the bellows
By setting the hollow enhancement layer of dual waves, not only cause bellows that there is more excellent compression strength, anti-destructive and ring rigidity,
And big crest layer and small crest layer play humidification jointly, make the unstressed centrostigma of tubing, are more uniformly stressed, each position
Compressive property is consistent, substantially prolongs service life.
What the utility model was realized in：A kind of spiral two peak structure bellows, it is characterised in that：The bellows includes
The hollow enhancement layer of outer layer, dual waves and internal layer, the outer layer are crest and trough interphase structure and along bellows axial direction
Setting in spiral distribution, the internal layer are cylindrical shape, and the outer surface of the internal layer is fixedly connected with the trough inner surface of outer layer, institute
State and a helical form cavity is surrounded between inner layer outer surface and the crest inner surface of outer layer, the hollow enhancement layer of dual waves is spiral shell
Revolve shape and be arranged in helical form cavity, the hollow enhancement layer of dual waves includes big crest layer, is sheathed in big crest layer
Small crest layer and the connection wall being connected between big crest layer and small crest layer bottom both sides, table in the big crest layer
Gap is left between face and small crest layer outer surface, the big crest layer outer surface is fixedly connected with the crest inner surface of outer layer,
The inner surface of the connection wall is fixedly connected with the outer surface of internal layer.
Preferably, the outer layer and internal layer are polyethylene layer or polypropylene layer, and the hollow enhancement layer of dual waves is modification
Polyethylene layer or modified polypropene layer.
Preferably, the thickness of the outer layer is 2~8mm, and the thickness of the internal layer is 2~10mm, the big crest layer and
The thickness of small crest layer is 2~6mm.
In order to further improve ring stiffness, the height of the big crest layer is 1.2~2.5 times of small crest layer height, institute
The width for stating big crest layer is 1.2~2.5 times of small crest slice width degree, and the height of the big crest layer is big crest slice width degree
0.8~1.5 times, the height of the small crest layer is 0.8~1.5 times of small crest slice width degree.
In order to further improve ring stiffness, while manufacturing cost is reduced, the width of the outer layer crest is wide for outer layer trough
0.8~1.8 times of degree, the height of the outer layer crest are the 3.5%~6.5% of internal layer internal diameter.
Preferably, the internal layer is adjacent into cylindrical shape, strip sheet material base using strip sheet material base spiral winding
The lap on side mutually it is melting adhered together.As shown in Figure 2 and Figure 3, strip sheet material base is set on the preceding both sides of spiral winding
There is hypotenuse, so can guarantee that lap and the consistency of thickness for not having lap after spiral winding, hypotenuse can not also be set, it is pressured
Power is depressed into the thickness of lap and there is not lap consistent.
Preferably, the outer layer is adhered to big crest layer outer surface and internal layer appearance using strip sheet material base spiral
Face, the lap of strip sheet material base adjacent edge mutually it is melting adhered together.As shown in Figure 2 and Figure 3, strip sheet
Material base is provided with hypotenuse on the preceding both sides of spiral winding, so can guarantee that lap after spiral winding and does not have the thickness one of lap
Cause, hypotenuse can not also be set, depended on pressure is depressed into the thickness of lap and does not have lap consistent.
For prior art, the utility model has advantages below：
(1) spiral two peak structure bellows provided by the utility model, the bellows is by setting the hollow enhancing of dual waves
Layer, not only cause bellows that there is more excellent compression strength, anti-destructive and ring rigidity, and big crest layer and small crest layer
Humidification is played jointly, makes the unstressed centrostigma of tubing, is more uniformly stressed, and each position compressive property is consistent, greatly prolongs
Service life；
(2) spiral two peak structure bellows provided by the utility model, the hollow enhancement layer use intensity of dual waves are excellent
MODIFIED PP or PE materials, make tubing have more excellent ring stiffness, ring stiffness is up to 16kN/m2More than, and dual waves
Even if the big crest layer of structure damages, there is the protection of small crest layer, bellows still can be with normal use；
(3) spiral two peak structure bellows provided by the utility model, outer layer use PP the or PE material materials of good-toughness
Material, make tubing that there is good shock resistance, internal layer uses PP the or PE materials of good-toughness, has tubing excellent resistance to
Cryogenic property；
(4) spiral two peak structure bellows provided by the utility model, each layer is using the good material of compatibility, and pass through
High-temperature fusion is compound, it is ensured that each layer is compound good, tubing is had good structural behaviour, service life length；
(5) spiral two peak structure bellows provided by the utility model, it is current other structures institute the advantages of two peak structure
Do not possess, if steel band class multiple tube is mainly by steel strip reinforced, plastic layer simply plays a work for protecting steel band not to be corroded
With, but some serious problems so be present, such as, the consistency problem of steel modeling, the time has been grown by expanding with heat and contract with cold, both meetings point
Layer；Simultaneously as steel is with modeling, both mechanical property difference is very big, causes serious internal stress be present, in the course of time, will
Tubing is caused to ftracture；
(6) spiral two peak structure bellows provided by the utility model, internal layer use strip sheet material base spiral winding
Into cylindrical shape, the lap of strip sheet material base adjacent edge mutually it is melting adhered together, be advantageously implemented skinny device and do
Big pipe, reduces equipment investment, simplifies equipment；
(7) spiral two peak structure bellows provided by the utility model, because using overall plastic material, and material is special between each layer
Sex differernce is small, easily controllable, and whole stable processing technique is easy to operate；
(8) spiral two peak structure bellows provided by the utility model, class multiple tube is moulded compared to steel, because of steel and the difference of modeling
It is different very big, cause the pretreatment process of steel band complicated, influence the speed of production of tubing, the speed of the manufacture method is steel modeling class
More than 3 times of multiple tube；
(9) spiral two peak structure bellows provided by the utility model, outer layer and internal layer are that high-temperature fusion is hot and double
The hollow enhancement layer winding of crest is compound, and heat seal strength is high；Meanwhile the hollow enhancement layer of dual waves pre-processes through high temperature, and through outer layer
With the cladding of internal layer, it is very high to be allowed to the whole heat seal strength of tubing, ensure that the heat seal strength between each layer well；
(10) spiral two peak structure bellows provided by the utility model, ingenious in design, performance is reliable, has wide
Market prospects.
Brief description of the drawings
The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings：
Fig. 1 is the three dimensional structure diagram of the utility model spiral two peak structure bellows；
Fig. 2 is the longitudinal section of the utility model spiral two peak structure bellows；
Fig. 3 is A close-up schematic views in Fig. 2；
Fig. 4 is the sectional view of the hollow enhancement layer of the utility model dual waves.
Symbol description in figure：1st, outer layer, 2, the hollow enhancement layer of dual waves, 21, big crest layer, 22, small crest layer, 23, even
Connect wall, 3, internal layer, h1, big crest layer height, h2, small crest layer height, h3, outer layer crest height, b1, big crest slice width degree, b2、
Small crest slice width degree, b3, outer layer wave peak width, b4, outer layer trough width, d, inside diameter of bel.
Embodiment
The utility model content is described in detail with reference to Figure of description and specific embodiment：
It is a kind of spiral two peak structure bellows provided by the utility model as Figure 1-4, it is characterised in that：The ripple
Pipe includes the hollow enhancement layer 2 of outer layer 1, dual waves and internal layer 3, and the outer layer 1 is for crest and trough interphase structure and along ripple
The setting in spiral distribution of pipe axial direction, the internal layer 3 are cylindrical shape, the outer surface of the internal layer 3 and table in the trough of outer layer 1
Face is fixedly connected, and a helical form cavity, the double wave are surrounded between the outer surface of internal layer 3 and the crest inner surface of outer layer 1
The hollow enhancement layer 2 in peak is helical form and is arranged in helical form cavity that the hollow enhancement layer 2 of dual waves includes big crest layer
21st, the small crest layer 22 that is sheathed in big crest layer 21 and big crest layer 21 and the bottom both sides of small crest layer 22 are connected to
Between connection wall 23, gap, the big crest are left between the big inner surface of crest layer 21 and the small outer surface of crest layer 22
21 outer surface of layer are fixedly connected with the crest inner surface of outer layer 1, and the outer surface of the inner surface and internal layer 3 of the connection wall 23 is fixed
Connection.
The advantages of two peak structure is not available for current other structures, if steel band class multiple tube is mainly by steel strip reinforced,
Plastic layer simply plays a part of one and protects steel band not to be corroded, but some serious problems so be present, such as, the phase of steel modeling
Capacitive problem, time have been grown by expanding with heat and contract with cold, both meetings layering；Simultaneously as steel is with moulding both mechanical property difference very
Greatly, cause serious internal stress be present, in the course of time, will result in tubing cracking.The design of dual waves, improve the anti-of tubing
Compressive Strength and anti-destructive, meanwhile, compared to original unicast peak tubing only by the mode of a crest enhancing, the small echo of dual waves
Peak layer serves an effect strengthened altogether with big crest layer, makes tubing entirety stress evenly, without stress concentration point, institute
Also to eliminate the weak spot of tubing as far as possible, whole tubing accomplishes force dispersion, each portion as far as possible from structure design
Position compressive property is as consistent as possible, meanwhile, because dual waves design improves the compression strength of tubing, therefore, the material of tubing
Uniformity as far as possible can be accomplished, without selecting the high material of some modulus, in order to ensure these are high in existing tubing
The toughness or corrosion resistance of modulus material, the material of some good-toughness is supplemented again, cause extreme, two kinds of differences in selection be present
Different greatly material is merged to form serious internal stress, and great hidden danger of quality is caused to tubing, long-term behaviour by
Have a strong impact on.
Preferably, the outer layer 1 and internal layer 3 are polyethylene layer or polypropylene layer, tubing is had good impact resistance
Can, the hollow enhancement layer 2 of dual waves is modified poly ethylene layer or modified polypropene layer, tubing is had excellent lower temperature resistance
Energy.
Preferably, the thickness of the outer layer 1 is 2~8mm, and the thickness of the internal layer 3 is 2~10mm, the big crest layer
21 and the thickness of small crest layer 22 be 2~6mm.
Reference picture 4, the height h of the big crest layer 211For the small height h of crest layer 2221.2~2.5 times, the big ripple
The width b of peak layer 211For the small width b of crest layer 2221.2~2.5 times, the height h of the big crest layer 211For big crest layer
21 width b10.8~1.5 times, the height h of the small crest layer 222For the small width b of crest layer 2220.8~1.5 times.So
Set primarily to improving ring stiffness, the width and height ratio of big crest layer and small crest layer are also to consider, both to the greatest extent may be used
The effect that can be shared the external pressure that tubing is born jointly, play common enhancing of energy, so setting can bear big crest layer
To 60%~70% of pressure at crest, small crest layer bears outside to 30%~40% of pressure at crest, reaches most for outside
Excellent effect.
Reference picture 2, in order to further improve ring stiffness, while manufacturing cost is reduced, the width b of the crest of outer layer 13For
The trough width b of outer layer 140.8~1.8 times, the height h of the crest of outer layer 13For the 3.5%~6.5% of the internal diameter d of internal layer 3.This
It is that, if trough place is too wide, that will make in order to accomplish that the compression strength of crest and trough is as far as possible close as far as possible that sample, which is set,
Compression strength into trough place can be too big with difference at crest, forms weak spot, so setting can make crest bear 60%~
70% external pressure, the effect being optimal.If crest is too low, it is small to will result in tubing the moment of inertia, causes compression strength
Decline, i.e., ring stiffness is relatively low.If crest is higher, the compression strength of tubing can be higher, i.e., ring stiffness is higher, but the setting upper limit is
Consider that too high materials are more, cost increase.
Preferably, the internal layer 3 is adjacent into cylindrical shape, strip sheet material base using strip sheet material base spiral winding
The lap on side mutually it is melting adhered together.
Preferably, the outer layer 1 is adhered to outside the big outer surface of crest layer 21 and internal layer 3 using strip sheet material base spiral
Surface, the lap of strip sheet material base adjacent edge mutually it is melting adhered together.
Table 1：The main performance contrast table of the utility model spiral two peak structure bellows and unicast peak structure tubing
From table 1 it follows that spiral two peak structure bellows of the present utility model, ring stiffness, impact property, ring are flexible
Existing tubing is substantially better than with tubing weight.
Simply the technical solution of the utility model is explained in detail for above-mentioned embodiment, and the utility model is not
Above-described embodiment is only limited only to, every any improvement or replacement according to the utility model principle all should be new in this practicality
Within the protection domain of type.
Claims (7)
- A kind of 1. spiral two peak structure bellows, it is characterised in that：The bellows includes outer layer (1), the hollow enhancement layer of dual waves (2) and internal layer (3), the outer layer (1) are crest and trough interphase structure and set along bellows axial direction is in spiral distribution Put, the internal layer (3) is cylindrical shape, and the outer surface of the internal layer (3) is fixedly connected with the trough inner surface of outer layer (1), described A helical form cavity, the hollow enhancement layer of dual waves are surrounded between the crest inner surface of internal layer (3) outer surface and outer layer (1) (2) helical form and to be arranged in helical form cavity, the hollow enhancement layer of dual waves (2) includes big crest layer (21), is arranged In the small crest layer (22) in big crest layer (21) and it is connected to big crest layer (21) and small crest layer (22) bottom two Connection wall (23) between side, gap is left between big crest layer (21) inner surface and small crest layer (22) outer surface, institute Big crest layer (21) outer surface is stated to be fixedly connected with the crest inner surface of outer layer (1), the inner surface of the connection wall (23) with it is interior The outer surface of layer (3) is fixedly connected.
- 2. spiral two peak structure bellows according to claim 1, it is characterised in that：The outer layer (1) and internal layer (3) are Polyethylene layer or polypropylene layer, the hollow enhancement layer of dual waves (2) are modified poly ethylene layer or modified polypropene layer.
- 3. spiral two peak structure bellows according to claim 1, it is characterised in that：The thickness of the outer layer (1) be 2~ 8mm, the thickness of the internal layer (3) is 2~10mm, the thickness of the big crest layer (21) and small crest layer (22) is 2~ 6mm。
- 4. spiral two peak structure bellows according to claim 1, it is characterised in that：The height of the big crest layer (21) (h1) it is small crest layer (22) height (h2) 1.2~2.5 times, the width (b of the big crest layer (21)1) it is small crest layer (22) width (b2) 1.2~2.5 times, the height (h of the big crest layer (21)1) it is big crest layer (21) width (b1) 0.8 ~1.5 times, the height (h of the small crest layer (22)2) it is small crest layer (22) width (b2) 0.8~1.5 times.
- 5. spiral two peak structure bellows according to claim 1, it is characterised in that：The width of outer layer (1) crest (b3) it is outer layer (1) trough width (b4) 0.8~1.8 times, the height (h of outer layer (1) crest3) it is internal layer (3) internal diameter (d) 3.5%~6.5%.
- 6. spiral two peak structure bellows according to claim 1, it is characterised in that：The internal layer (3) uses strip Sheet material base spiral winding into cylindrical shape, the lap of strip sheet material base adjacent edge mutually it is melting adhered together.
- 7. spiral two peak structure bellows according to claim 1, it is characterised in that：The outer layer (1) uses strip Sheet material base spiral is adhered to big crest layer (21) outer surface and internal layer (3) outer surface, the weight of strip sheet material base adjacent edge Folded part mutually it is melting adhered together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2017206527031 | 2017-06-06 | ||
| CN201720652703 | 2017-06-06 |
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| CN207034433U true CN207034433U (en) | 2018-02-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191693A (en) * | 2017-06-06 | 2017-09-22 | 周成纤 | Spiral two peak structure bellows and its manufacture method |
| CN109323054A (en) * | 2018-11-30 | 2019-02-12 | 重庆爵通塑胶科技(集团)有限公司 | MPVE spiral winding pipe |
-
2017
- 2017-06-12 CN CN201720678911.9U patent/CN207034433U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191693A (en) * | 2017-06-06 | 2017-09-22 | 周成纤 | Spiral two peak structure bellows and its manufacture method |
| CN107191693B (en) * | 2017-06-06 | 2023-11-24 | 周成纤 | Corrugated pipe with spiral double-peak structure and manufacturing method thereof |
| CN109323054A (en) * | 2018-11-30 | 2019-02-12 | 重庆爵通塑胶科技(集团)有限公司 | MPVE spiral winding pipe |
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