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Tich "Tichflow" siphon drainage system
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Published time: 2016-05-16
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A. The siphonic drainage system
a) The principle of siphonic system
In accordance with the principle of pressure pipe siphon full flow design, by using "Bernoulli equation", with careful calculation, the siphonic drainage system of roof uses specially designed rain water buckets. With the buckets and the potential energy formed by the height between building roof and floor, rain gutters and forms full pipe flow state in the pipe,which forms partial vacuum in the pipeline. The rain water and water pressure level to obtain additional pipe produced to a siphonic phenomenon. The siphon effect greatly accelerates the water flow in the drainage pipe and quickly clears rainwater on the roof. This system is composed of a siphonic type rainwater buckets, pipes (rainwater hopper branch hanging tube, horizontal tube, vertical tube and out tube), pipe fittings, fixed systems, etc.
b) The difference between the siphonic drainage system and the gravity drainage system
The gravity drainage system:
The principle of gravity flow drainage way is the use of roofing structure based on natural water flows into the slope, and water flowed into the rain bucket easily permeates into the air, forming a gas-water mixture flow. Calculations rely on the manual count hydraulic system, pipe diameter calculation amplifier. At the same time as the roof drainage itself has a certain slope and the roof structure limites, effective drainage need increase rainwater hoppers and the corresponding vertical drainage pipes. These massive vertical pipes finally collect into the rainwater pipe network of the city .
The siphonic drainage system
At the beginning, the siphonic drainage system works the same with the gravity drainage . Differently, when the water level on the roof gets a certain height, siphonic rain water bucket automatically cut off the air from going into the water bucket, which produces siphonic effect, increasing the volume of drainage. For the siphonic roof rainwater drainage system, leakage problem must be prevented when burying buckets. Because if leaks, severe damage to expensive construction, even endanger personal safety may be caused. Therefore, for the siphonic roof rainwater drainage system, calculation of hydraulic system, choice of products, design of the siphon rain water buckets’ layout, and the overall system installation, must have a high quality assurance.
c) Advantages of the siphonic drainage system
B.The siphonic drainage component of siphon rain water bucket
a) Tichflow ® siphonic rain water bucket:
Siphonic type rainwater bucket is the beginning of roof rainwater drainage system, but also the core of the whole system, and the main purpose is to collect rain and leading the rain into the system. Siphonic rain water bucket before the maximum depth should be strictly controlled, to ensure the roof surface is defined in the reasonable height below, otherwise the roof rainwater accumulation of heavy will cause the roof structure damage, and even severe personal or property loss. The Tich Company provides tichflow ® siphonic rain water bucket with excellence quality reflected completely stable and controllable in the bucket depth, fully in line with the "siphonic rainwater drainage system technology regulations" requirements.
b) Advantages of Tichflow ® siphonic rain water bucket:
The bucket body is made of high quality 304 stainless steel, greatly prolongs the service life
The rainwater hopper tail pipe diameter can be adjusted, so as to meet the different discharge requirements
Water inlet part arranged anticyclone rectifier grid unique strengthens the siphon effect
Installation is suitable for various types of roof
Bucket depth before the super low ensures the building’s economical cost and safe use.
c) The rainwater hopper maintenance:
Daily cleaning
Siphonic type rainwater bucket needs regular maintenance.The specific job is to remove the roof of leaves, trash or heterozygous plants to avoid clogging drains. The maintenance cycle should be based on the specific circumstances of local (heaven and earth, green etc.) and, in addition, maintenance work should also include the clean water outlet and grille.
Open bars in the maintenance, and then clean rain bucket’s internal parts. The maintenance frequency accords to the Standard maintenance.
C.The siphonic drainage system component of the ---- pipeline system
a) The HDPE piping system
High density polyethylene pipe, an environmental protection type drainage pipeline with a remarkable performance, has become a roof drainage pipeline and the building of wastewater discharge pipeline material of choice in the European countries. The "system of roof rainwater drainage procedures siphon type CECS183:2005" has also been listed it as one of the main references. Its unique properties is mainly reflected as following:
Easy installation, can be prefabricated
Anti corrosion
Impact resistant, resistant to high pressure
Abrasion resistance
In addition, the HDPE pipeline is a kind of environmentally friendly non-toxic material model. In the face of fire, the high density polyethylene pipe does not release toxic gases as other halogen containing pipes . In accordance with the standard provisions of GJB1916-94, by testing the drain pipe fittings with high density polyethylene offered by Kaishi Li company , combustion toxicity index values were less than 1, which proves to be ecological and environmental.
The special performance of HDPE pipes:
Tichflow ® HDPE high density polyethylene pipe made of with PE100 grade raw material provided by Tich Company,can resists ultraviolet, excellent aging resistance, impact resistance. Its corrosion resistance is strong, and it can provide the smooth inner wall, from the acid rain.And it’s smooth inside and non-clogged.Features:
Complete specifications of the pipes and pipe fittings, to meet a variety of needs;
The pipe has good toughness, air tightness and anti aging properties;
Suitable for the application of siphon rainwater system ;
The pipe has good impact resistance, heat resistance, wear resistance and acid and alkali resistance;
Pipe the modulus of elasticity is small, can absorb the water noise tube;
Pipe the proportion of small, light weight, convenient transportation and installation;
The melting hot melt connection, power, the system is safe and reliable without leakage;
The service life is long, up to 50 years;
According to the project requirement of the system, can adopt different pressure (PN3.2, PN4, PN6, PN8, PN10, PN12, PN16, PN20) pipe. Different specifications of the tubing negative pressure resistance value can be 80kPa, avoid pipe suction appear flat, deformation of the;
The linear expansion coefficient of 0.2mm/m ℃ within the pipe, expansion caused by temperature change rate in the range of 1%;
Siphon system without setting expansion joint, to avoid system leakage. Our company according to the linear expansion coefficient, temperature should be design factors and the strength of pipe and other developed suspension device to eliminate the expansion caused by temperature difference.
The environmental protection performance of HDPE pipeline
Polyethylene (PE) is composed of carbon, hydrogen atom combination of simple and is harmless to human, animal, plants.
Polyethylene’s (PE’s) production and the process is related to the environmental burden. In addition to raw materials and crude oil, energy is also needed for the production process of producing plastic particles and products.
From the angle of ecology, polyethylene (PE) material is the most suitable material for a pipe system . It has long service life and the process does not produce toxic gas incineration (e.g., PVC material produced by hydrochloric acid). In production and transportation process, it consumes less energy than steel pipe, cast iron pipe and copper pipe.
b) Stainless steel piping system
Stainless steel piping system is the large construction recommended products, in order to meet the architectural requirements, we recommend the use of thin wall stainless steel pipe wall thickness, the apparent diameter of different thickness in the 1.5-4MM range, can reduce the load and reduce the cost of.
The following are the main features:
Pipe, pipe fitting has good corrosion resistance;
Mechanical and physical properties, excellent, stainless steel pipe with high strength, is 2 times of steel pipe, galvanized pipe, PP-R pipe of 3 times 8-10 times, can well withstand vibration and impact, has not Water Leakage, does not burst, fire, earthquake and other characteristics, so it is reliable and safe;
Long service life, corrosion test data indicate, stainless steel pipe with a life span of 100 years, stainless steel water pipe maintenance is simple, therefore, the running life of lower cost, the price is good, with significant economic benefits;
Pipeline small heat expansion coefficient;
Positive negative pressure resistance, strong ability;
Fire performance recognized by the world;
Convenient installation.
Products meet the standard:
Technical specification for pipeline CECS153:2003
Welded stainless steel pipe standard GB/T12771-2000
Fittings standard GB12459-90
Building water supply and thin-wall stainless steel
The seamless stainless steel pipe standard GB/T14976-2002
Different from the traditional method with fixed expansion joint, the fixing system uses the fixed clamp and the sliding clamp to fix the pipes in parallel with the square steel rails, with no expansion joint.
Fixed clamp limits heat expansion and cold contraction expansion of the pipe, and transfer the axial thrust to the rail.
The use of the sliding clamp makes the pipe slide freely in the pipe clamp, and it’s used to adjust the pipe between the expansion difference caused by uneven shrinkage.
b) Suspension pipe installation steps
The first step: in accordance with the siphon system on line in the building to determine the point of suspension
The second step: install and sling threaded rod installed on buildings
The third step: the square steel rails and clamp assembly together
The fourth step: the assembly suspension fixation system together with the suspension at the threaded rod
The fifth step: siphon system pipeline installation to the suspension clamp
E.The design of siphonic rainwater drainage system
a) Technical regulations:
Siphon roof rainwater drainage system must choose siphon rainwater head;
A calculation of catchment area, should be placed at least two pressure flow rain water bucket, roof Catchment lowest at least should be placed in a pressure flow rain water bucket;
Siphon rainwater head spacing not greater than 20m;
Flat roof should adopt the sinking type siphon rainwater head, access the same suspension pipe rainwater hopper shall use the same specification, the water should be at the same level;
Suspension siphon flow rainwater system design of pipe flow rate of not less than 1m/s, riser design velocity should not be less than 2.2m/s, not more than 10m/s;
The total water head loss of pipeline and drainage outflow water head and not larger than the geometric height difference, export into the storm water system;
The same system nodes in different branches of differential pressure are not more than 10kpa;
Siphon flow drainage system access to municipal gravity flow before amplifying diameter, the velocity should not be larger than 1.8m/s, otherwise need to set the stilling well;
Every design siphon flow drainage engineering and building roof should be provided with overflow (except outside the gutter), overflow weir, overflow pipe overflow facilities. Overflow drainage facilities shall not endanger the safety of building facilities;
Before and after the rainy season, the need to clear the roof siphon rainwater hopper timely flow deflector on the debris.
b) The design steps of the siphonic rainwater drainage system
The first step: Calculation of roof area
The second step: Calculation of storm intensity
The third step: roof rainfall runoff
The fourth step: the number and arrangement of the rainwater hopper
The fifth step: the piping layout
The sixth step: computation graph input length
The seventh step: the input traffic
The eighth step: diameter calculation
c) Software design of siphon drainage:
Tichflow ® software independent development company, the product has wide applicability. Be applicable to various complex roof pressure flow drainage system, can more accurately and quickly design to meet the design requirements of the customers.
a) The principle of siphonic system
In accordance with the principle of pressure pipe siphon full flow design, by using "Bernoulli equation", with careful calculation, the siphonic drainage system of roof uses specially designed rain water buckets. With the buckets and the potential energy formed by the height between building roof and floor, rain gutters and forms full pipe flow state in the pipe,which forms partial vacuum in the pipeline. The rain water and water pressure level to obtain additional pipe produced to a siphonic phenomenon. The siphon effect greatly accelerates the water flow in the drainage pipe and quickly clears rainwater on the roof. This system is composed of a siphonic type rainwater buckets, pipes (rainwater hopper branch hanging tube, horizontal tube, vertical tube and out tube), pipe fittings, fixed systems, etc.
b) The difference between the siphonic drainage system and the gravity drainage system
The gravity drainage system:
The principle of gravity flow drainage way is the use of roofing structure based on natural water flows into the slope, and water flowed into the rain bucket easily permeates into the air, forming a gas-water mixture flow. Calculations rely on the manual count hydraulic system, pipe diameter calculation amplifier. At the same time as the roof drainage itself has a certain slope and the roof structure limites, effective drainage need increase rainwater hoppers and the corresponding vertical drainage pipes. These massive vertical pipes finally collect into the rainwater pipe network of the city .
The siphonic drainage system
At the beginning, the siphonic drainage system works the same with the gravity drainage . Differently, when the water level on the roof gets a certain height, siphonic rain water bucket automatically cut off the air from going into the water bucket, which produces siphonic effect, increasing the volume of drainage. For the siphonic roof rainwater drainage system, leakage problem must be prevented when burying buckets. Because if leaks, severe damage to expensive construction, even endanger personal safety may be caused. Therefore, for the siphonic roof rainwater drainage system, calculation of hydraulic system, choice of products, design of the siphon rain water buckets’ layout, and the overall system installation, must have a high quality assurance.
c) Advantages of the siphonic drainage system
B.The siphonic drainage component of siphon rain water bucket
a) Tichflow ® siphonic rain water bucket:
Siphonic type rainwater bucket is the beginning of roof rainwater drainage system, but also the core of the whole system, and the main purpose is to collect rain and leading the rain into the system. Siphonic rain water bucket before the maximum depth should be strictly controlled, to ensure the roof surface is defined in the reasonable height below, otherwise the roof rainwater accumulation of heavy will cause the roof structure damage, and even severe personal or property loss. The Tich Company provides tichflow ® siphonic rain water bucket with excellence quality reflected completely stable and controllable in the bucket depth, fully in line with the "siphonic rainwater drainage system technology regulations" requirements.
b) Advantages of Tichflow ® siphonic rain water bucket:
The bucket body is made of high quality 304 stainless steel, greatly prolongs the service life
The rainwater hopper tail pipe diameter can be adjusted, so as to meet the different discharge requirements
Water inlet part arranged anticyclone rectifier grid unique strengthens the siphon effect
Installation is suitable for various types of roof
Bucket depth before the super low ensures the building’s economical cost and safe use.
c) The rainwater hopper maintenance:
Daily cleaning
Siphonic type rainwater bucket needs regular maintenance.The specific job is to remove the roof of leaves, trash or heterozygous plants to avoid clogging drains. The maintenance cycle should be based on the specific circumstances of local (heaven and earth, green etc.) and, in addition, maintenance work should also include the clean water outlet and grille.
Open bars in the maintenance, and then clean rain bucket’s internal parts. The maintenance frequency accords to the Standard maintenance.
C.The siphonic drainage system component of the ---- pipeline system
a) The HDPE piping system
High density polyethylene pipe, an environmental protection type drainage pipeline with a remarkable performance, has become a roof drainage pipeline and the building of wastewater discharge pipeline material of choice in the European countries. The "system of roof rainwater drainage procedures siphon type CECS183:2005" has also been listed it as one of the main references. Its unique properties is mainly reflected as following:
Easy installation, can be prefabricated
Anti corrosion
Impact resistant, resistant to high pressure
Abrasion resistance
In addition, the HDPE pipeline is a kind of environmentally friendly non-toxic material model. In the face of fire, the high density polyethylene pipe does not release toxic gases as other halogen containing pipes . In accordance with the standard provisions of GJB1916-94, by testing the drain pipe fittings with high density polyethylene offered by Kaishi Li company , combustion toxicity index values were less than 1, which proves to be ecological and environmental.
The special performance of HDPE pipes:
Tichflow ® HDPE high density polyethylene pipe made of with PE100 grade raw material provided by Tich Company,can resists ultraviolet, excellent aging resistance, impact resistance. Its corrosion resistance is strong, and it can provide the smooth inner wall, from the acid rain.And it’s smooth inside and non-clogged.Features:
Complete specifications of the pipes and pipe fittings, to meet a variety of needs;
The pipe has good toughness, air tightness and anti aging properties;
Suitable for the application of siphon rainwater system ;
The pipe has good impact resistance, heat resistance, wear resistance and acid and alkali resistance;
Pipe the modulus of elasticity is small, can absorb the water noise tube;
Pipe the proportion of small, light weight, convenient transportation and installation;
The melting hot melt connection, power, the system is safe and reliable without leakage;
The service life is long, up to 50 years;
According to the project requirement of the system, can adopt different pressure (PN3.2, PN4, PN6, PN8, PN10, PN12, PN16, PN20) pipe. Different specifications of the tubing negative pressure resistance value can be 80kPa, avoid pipe suction appear flat, deformation of the;
The linear expansion coefficient of 0.2mm/m ℃ within the pipe, expansion caused by temperature change rate in the range of 1%;
Siphon system without setting expansion joint, to avoid system leakage. Our company according to the linear expansion coefficient, temperature should be design factors and the strength of pipe and other developed suspension device to eliminate the expansion caused by temperature difference.
The environmental protection performance of HDPE pipeline
Polyethylene (PE) is composed of carbon, hydrogen atom combination of simple and is harmless to human, animal, plants.Polyethylene’s (PE’s) production and the process is related to the environmental burden. In addition to raw materials and crude oil, energy is also needed for the production process of producing plastic particles and products.From the angle of ecology, polyethylene (PE) material is the most suitable material for a pipe system . It has long service life and the process does not produce toxic gas incineration (e.g., PVC material produced by hydrochloric acid). In production and transportation process, it consumes less energy than steel pipe, cast iron pipe and copper pipe.b) Stainless steel piping system
Stainless steel piping system is the large construction recommended products, in order to meet the architectural requirements, we recommend the use of thin wall stainless steel pipe wall thickness, the apparent diameter of different thickness in the 1.5-4MM range, can reduce the load and reduce the cost of.
The following are the main features:
Pipe, pipe fitting has good corrosion resistance;
Mechanical and physical properties, excellent, stainless steel pipe with high strength, is 2 times of steel pipe, galvanized pipe, PP-R pipe of 3 times 8-10 times, can well withstand vibration and impact, has not Water Leakage, does not burst, fire, earthquake and other characteristics, so it is reliable and safe;
Long service life, corrosion test data indicate, stainless steel pipe with a life span of 100 years, stainless steel water pipe maintenance is simple, therefore, the running life of lower cost, the price is good, with significant economic benefits;
Pipeline small heat expansion coefficient;
Positive negative pressure resistance, strong ability;
Fire performance recognized by the world;
Convenient installation.
Products meet the standard:
Technical specification for pipeline CECS153:2003
Welded stainless steel pipe standard GB/T12771-2000
Fittings standard GB12459-90
Building water supply and thin-wall stainless steel
The seamless stainless steel pipe standard GB/T14976-2002
D.Siphonic drainage system, suspension fixation system
a) Fixed clamp and the sliding clamp device
Different from the traditional method with fixed expansion joint, the fixing system uses the fixed clamp and the sliding clamp to fix the pipes in parallel with the square steel rails, with no expansion joint.
Fixed clamp limits heat expansion and cold contraction expansion of the pipe, and transfer the axial thrust to the rail.
The use of the sliding clamp makes the pipe slide freely in the pipe clamp, and it’s used to adjust the pipe between the expansion difference caused by uneven shrinkage.
b) Suspension pipe installation steps
The first step: in accordance with the siphon system on line in the building to determine the point of suspension
The second step: install and sling threaded rod installed on buildings
The third step: the square steel rails and clamp assembly together
The fourth step: the assembly suspension fixation system together with the suspension at the threaded rod
The fifth step: siphon system pipeline installation to the suspension clamp
E.The design of siphonic rainwater drainage system
a) Technical regulations:
Siphon roof rainwater drainage system must choose siphon rainwater head;
A calculation of catchment area, should be placed at least two pressure flow rain water bucket, roof Catchment lowest at least should be placed in a pressure flow rain water bucket;
Siphon rainwater head spacing not greater than 20m;
Flat roof should adopt the sinking type siphon rainwater head, access the same suspension pipe rainwater hopper shall use the same specification, the water should be at the same level;
Suspension siphon flow rainwater system design of pipe flow rate of not less than 1m/s, riser design velocity should not be less than 2.2m/s, not more than 10m/s;
The total water head loss of pipeline and drainage outflow water head and not larger than the geometric height difference, export into the storm water system;
The same system nodes in different branches of differential pressure are not more than 10kpa;
Siphon flow drainage system access to municipal gravity flow before amplifying diameter, the velocity should not be larger than 1.8m/s, otherwise need to set the stilling well;
Every design siphon flow drainage engineering and building roof should be provided with overflow (except outside the gutter), overflow weir, overflow pipe overflow facilities. Overflow drainage facilities shall not endanger the safety of building facilities;
Before and after the rainy season, the need to clear the roof siphon rainwater hopper timely flow deflector on the debris.
b) The design steps of the siphonic rainwater drainage system
The first step: Calculation of roof area
The second step: Calculation of storm intensity
The third step: roof rainfall runoff
The fourth step: the number and arrangement of the rainwater hopper
The fifth step: the piping layout
The sixth step: computation graph input length
The seventh step: the input traffic
The eighth step: diameter calculation
c) Software design of siphon drainage:
Tichflow ® software independent development company, the product has wide applicability. Be applicable to various complex roof pressure flow drainage system, can more accurately and quickly design to meet the design requirements of the customers.
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Address: 188 Lane 6,Room 302,Taiyangshan Road, Zhabei District, Shanghai Shanghai ICP No.16022431
Service Hotline：400-002-0910 Tel：+86-21-31396105 / 31396195 E-mail：tichflow@126.com http://www.tichflow.com
Keywords: siphonic drainage system of roof, the same floor drainage system of kitchen and toilet, comprehensive rainwater recycling system, ＂tichflow＂ siphonic rainwater drainage system of roof, the same floor ＂tichflow＂drainage system of kitchen and toilet
Address: 188 Lane 6,Room 302,Taiyangshan Road, Zhabei District, Shanghai Shanghai ICP No.16022431
Service Hotline：400-002-0910 Tel：+86-21-31396105 / 31396195 E-mail：tichflow@126.com http://www.tichflow.com
Keywords: siphonic drainage system of roof, the same floor drainage system of kitchen and toilet, comprehensive rainwater recycling system, ＂tichflow＂ siphonic rainwater drainage system of roof, the same floor ＂tichflow＂drainage system of kitchen and toilet