CN200943254Y - Outdoor buried large caliber water-exhausting pipe - Google Patents

Abstract

The utility model relates to an outdoor buried drain pipe with a large diameter used to drain rainwater and sewage in cities and towns. The pipe is characterized in that the cross-section of the inner wall of the pipe is an oval, and the ratio of the maximum height H of the oval to the maximum width B of the oval ranges from 1:1.003-2.6, thus forming an outdoor buried drain pipe with a large diameter. The utility model applies the oval shape to the outdoor buried drain pipe with a large diameter, represents an almost perfect combination of an ideal geometric shape and the buried gravity drain pipe technology. The outdoor buried oval-shaped drain pipe with a large diameter provided by the utility model has apparent advantages in improving the drain technology, saving materials and reducing construction cost, and will draw great attention from water supply and drainage engineers and municipal construction institutions, and have broad use in the market once the pipe comes into market.

Description

The outdoor buried large-bore gutter

Technical field

The utility model relates to a kind of outdoor buried large-bore gutter that is used for town rain, sewage.

Background technology

At present, be used for the gutter of town rain, sewage, cross sectional shape is circular in it.The gutter of this kind structure, the load when flowing full is economical, waterpower is calculated simple; But as non-flowing full bury ground gravity drainage Guan Eryan, its circular advantage not only is not in full use, and is easy to precipitated impurities, causes the obstruction of gutter.Along with the continuous development of urban construction, also more and more higher to the technical requirements of drainage pipe, therefore need even more ideal and special-purpose drainage pipe to be applicable to the gravity current conveying of town rain, sewage.

Do not see that now being useful on outdoor large-bore oval drain-pipe road product comes out, and only has Japan to adopt indoor plastics oval drain-pipe.Avette pipe has the width that can dwindle tube seat, and is favourable to the soil pressure of bearing vertical direction; When flow hour degree of filling less than 50%, advantage such as hydraulics is superior.Why does reality think little of since avette pipe has these advantages? trace it to its cause, so what time to have: the one, economic load-carrying ability; The 2nd, determine that avette geometry is difficult for; The 3rd, be limited to manufacture level at that time.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of outdoor buried large-bore gutter is provided, carries with the gravity current of waste water such as the rainwater that contains impurity that is applicable to cities and towns and sewage.

The technical scheme that its technical problem that solves the utility model adopts is: its inside pipe wall cross-sectional geometry is avette, and the ratio of maximum height H that this is avette and Breadth Maximum B is 1: 1.003～2.6, constitutes outdoor buried large-bore oval drain-pipe thus.

The utility model becomes oval drain-pipe with outdoor buried circular row water pipe, therefore has following main advantage:

One. avette pipe hydraulics is superior: in urban rainwater, sewage gravity current are carried, the degree of filling of pipe design is non-flowing full state, and, the residing degree of filling of water is arranged in a lot of time pipelines below 50%, and avette pipe at degree of filling less than the hydraulic radius of the hydraulic radius that had in 50% o'clock greater than pipe.Therefore, if round tube and avette pipe all have the same gradient (at degree of filling less than 50% o'clock) and the onesize cross-section of river, flow velocity in the then avette pipe is greater than round tube, so just mean that avette pipeline more is difficult for precipitated impurities thing and attachment fiber than circular pipe, promptly the desilting cycle of pipeline is longer.Same reason if round tube and avette pipe have the onesize cross-section of river, all have same flow velocity, the required conduit slope of then avette pipe littler than the round tube (gently).It is more mild promptly to be full of the minimum grade of down non-silting velocity control according to avette pipe minimum of computation, promptly available this gradient go to design laying than round tube more mild bury the avette water pipe of ground draining.Thus, the underground degree of depth of the lift pump room of oval drain-pipe terminal is less than the underground degree of depth of the lift pump room of round tube terminal, so both can save the engineering cost that gutter is laid, and reduces the cost and the day-to-day operation expense of lift pump room again.

They are two years old. avette pipe has better stressed shape: avette is the shape that reptiles, birds life bred selected tool protection in offspring's process in several ten million years, will avettely be used to bury it can resist preferably and be subjected to ground pressure.If the round tube and the avette pipe of identical material and wall thickness, identical cross-sectional area are buried ground, avette Guan Gengneng bears the pressure of soil and produces less distortion, and this numerical value can get according to the unlike material actual measurement.

They are three years old. and can reduce material cost: identical and bear pressure one regularly in material, the pipe thickness of avette pipe will approach than the circular pipe tube wall.Therefore, the structure materials of avette pipe are low in round tube, and material cost is more economical.

They are four years old. market prospects are good: the waterpower of avette pipe and anti-to be subjected to ground pressure condition advantage be clearly, in the past since the bottleneck of conditions such as material, manufacturing and calculating underuse its characteristics and develop abundant avette pipe product.In the epoch that current material science and computer technology are advanced by leaps and bounds, former bottleneck has not existed.Achievement of the present utility model and computer, numerical controlled machinery process equipment and various novel material can be utilized, avette pipe product lot quantityization, the marketization can be easily made.Thereby improve the urban sewerage and drainage technology, reduce the cost and the day-to-day operation expense of municipal sewerage engineering.

In a word, the utility model is introduced oval geometries in the outdoor buried large-bore gutter, is desirable geometry and intimate perfect combination of burying ground gravity drainage Manifold technology.Outdoor buried large-bore oval drain-pipe is conspicuous in the advantage that improves water discharge technology, economical with materials and construction costs, in case the outdoor buried large-bore oval drain-pipe product comes out, will be subjected to the water supply and sewage work teacher and the urban construction worker payes attention to greatly, and can in market, extensively be used.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

The specific embodiment

Structure of the present utility model is as shown in drawings: its inside pipe wall 1 cross-sectional geometry is avette, and the ratio of maximum height H that this is avette and Breadth Maximum B is 1: 1.003～2.6, it optimizes ratio range is 1: 1.003～1.8, be best generally, thereby constitute outdoor buried large-bore oval drain-pipe with 1: 1.6.Avette among the figure is avette inside pipe wall cross section, and the tip is situation vertically downward.

The outdoor buried large-bore oval drain-pipe that the utility model provides can be used for containing the town rain of impurity, the gravity transfer of sewage, buries and answers the tip when putting vertically downward.The bore of this gutter is at least 300mm, and it can utilize prior art and device fabrication to go out, for example: the concrete oval drain-pipe, the moulded plastic oval drain-pipe, plastics twine oval drain-pipe, and glass fiber reinforced plastic twines oval drain-pipe, and plastics squeeze and draw oval drain-pipe.

In China, the production technology of circular row water pipe and manufacturing equipment be maturation and extensive use very.Kind of tube types mainly contains the concrete pipe that pouring is shaped; The plastic spiral pipe of winding shaping and glass fiber reinforced plastic wind pipe; The crowded plastic pipe and the plastic film capicitor of drawing of pultrusion process; The plastic mould pressing pipe of die forming etc.The manufacture of the utility model oval drain-pipe is also similar with it.By different materials and different manufacturing process and equipment, according to the cross section parameter of avette pipe, can prepare: produce the concrete casting mould of oval drain-pipe earlier, just can produce the avette pipe of concrete with traditional casting process again; Produce the steel mould of oval drain-pipe earlier, can produce the moulded plastic oval drain-pipe with the conventional moulded manufacturing process again; Produce avette winding core earlier, can produce avette plastic spiral pipe with traditional plastic pipe Wiring apparatus again, same way also can be produced the avette wind pipe of glass fiber reinforced plastic; Produce avette crowded pull head earlier, utilize traditional plastic pipe ironing apparatus again, just can produce avette plastics and squeeze trombone slide.Special in present computer age, implement above device fabrication and realize than being easier to transformation.

Claims (5)

1. outdoor buried large-bore gutter, it is characterized in that described gutter, its inside pipe wall cross-sectional geometry is avette, and the ratio of this avette maximum height H and Breadth Maximum B is 1: 1.003～2.6, constitutes outdoor buried large-bore oval drain-pipe thus.

2. outdoor buried large-bore gutter according to claim 1 is characterized in that: outdoor buried large-bore oval drain-pipe, the ratio of maximum height H that it is avette and Breadth Maximum B is 1: 1.003～1.8.

3. outdoor buried large-bore gutter according to claim 2 is characterized in that: outdoor buried large-bore oval drain-pipe, the ratio of maximum height H that it is avette and Breadth Maximum B is 1: 1.6.

4. according to claim 1,2 or 3 described outdoor buried large-bore gutters, it is characterized in that: outdoor buried large-bore oval drain-pipe is the concrete oval drain-pipe, or moulded plastic oval drain-pipe, or plastics twine oval drain-pipe, or glass fiber reinforced plastic winding oval drain-pipe, or the crowded oval drain-pipe that draws of plastics.

5. outdoor buried large-bore gutter according to claim 4 is characterized in that: outdoor buried large-bore oval drain-pipe, its bore is at least 300mm.