A supplemental drainage system for a siphonic roof drainage system and a method of draining the same

Abstract

The present application belongs to the technical field of roof drainage component, and discloses a kind of siphon roof drainage's auxiliary drainage system and its drainage method, siphon roof drainage's auxiliary drainage method includes: pressure sensor real-time collection siphon drainage riser or gutter water pressure, if current water pressure exceeds the set critical value, start and open the auxiliary baffle connected with auxiliary system preloading device, and water is accumulated in roof and gutter, and is discharged to ground. By adjusting the position of spring in auxiliary system preloading device, the pre-pressure of auxiliary baffle is set, the position of auxiliary baffle behind spring is adjusted relative to the axial direction of spring, and the opening pressure is realized. The present application effectively improves the pressure of riser and gutter under full-flow condition of pipe network, avoids causing roof or building area water; actively provides the drainage capacity of siphon system, changes the passive drainage state of siphon system, improves the safety of system drainage, and ensures the safety of building.

Description

Technical Field

[0001] The present invention belongs to the technical field of roof drainage components, and in particular relates to an auxiliary drainage system for siphon-type roof drainage and a drainage method thereof. Background Art

[0002] The principle of a siphonic roof drainage system relies on a special gutter design that separates air and water, ensuring a full flow in the rainwater riser. When the water in the riser reaches a certain capacity, a siphonic effect is activated. During rainfall, this continuous siphonic action allows the entire system to drain rainwater from the roof at an astonishingly fast rate. However, siphonic systems are designed for full flow, resulting in a small drainage margin. In heavy rainfall, when the system's drainage capacity is reached, this can lead to overflowing gutters and even jeopardize building safety.

[0003] The problems existing in the prior art are:

[0004] (1) The current siphon drainage technology relies on the gravity acceleration of water flow to drive the negative pressure siphon state of the suspended pipe, thereby quickly discharging rainwater. The system drainage margin is small. Especially when encountering heavy rainfall, the outdoor rainwater pipe network is in a full flow state, which can easily bring a negative effect of supporting the siphon system, reducing the drainage capacity of the system, causing water to accumulate on the roof and overflow into the room, and even affecting the safety of the building load.

[0005] (2) The intelligent control effect of auxiliary drainage used in existing siphonic roof drainage is poor.

[0006] The significance of solving the above problems and defects is: in order to increase the initiative of siphon drainage and enable the system to have measures to enhance drainage capacity under heavy rain conditions, this equipment is studied, and the pressure effect of siphon full flow and the residual pressure of system drainage are used to increase the drainage cross-sectional area of ​​the drainage outlet during heavy rainfall, thereby improving drainage capacity. Summary of the Invention

[0007] In order to overcome the problems existing in the related art, the embodiments disclosed in the present invention provide an auxiliary drainage system and a drainage method for siphonic roof drainage.

[0008] The technical solution is as follows: An auxiliary drainage method for siphonic roof drainage includes: a pressure sensor collects the water pressure in the siphon drainage riser and the gutter in real time. When the current water pressure exceeds the set critical value, the auxiliary baffle connected to the auxiliary system pre-pressure device is started to open, and the water accumulated in the roof and the gutter is discharged to the municipal pipeline network.

[0009] In one embodiment, a pressure sensor measures the pressure in the siphon drain riser and gutter after full water flow, then transmits this pressure parameter to a processing unit. The auxiliary system pre-pressurization device activates appropriately based on instructions from the processing unit. A signal transmission device transmits the on-site status to a mobile phone or cloud platform for remote monitoring and centralized management.

[0010] In one embodiment, the critical value is set to 100 kPa; the opening pressure of the auxiliary baffle is adjusted according to the height of different projects and the ground distribution position.

[0011] In one embodiment, the preload of the auxiliary baffle is set by adjusting the position of the spring in the auxiliary system preload device, and the position of the auxiliary baffle at the rear of the spring is adjusted forward and backward relative to the axial direction of the spring to achieve the opening pressure.

[0012] In one embodiment, when the pressure in the siphonic drainage riser exceeds a set value, the auxiliary baffle is squeezed to the position of the limit baffle; after the auxiliary baffle is opened, rainwater in the siphonic drainage riser flows to the auxiliary drainage pipe fitting; the pipe mouth of the auxiliary drainage pipe fitting is provided with a one-way flap door having an opening pressure and being in a closed state, and the opening pressure of the auxiliary drainage pipe fitting is less than the opening pressure of the auxiliary baffle.

[0013] In one embodiment, the auxiliary baffle calculates the position of the limit baffle extrusion according to the historical maximum rainfall.

[0014] In the present invention, the auxiliary device can be opened according to the value of the pipeline pressure through the pressure acquisition device, or the auxiliary device can be opened by spring preload (adjustable).

[0015] In the present invention, the siphon system is usually connected to a municipal rainwater well or energy dissipation well at the exit of the house. When extreme rainfall occurs, the municipal rainwater pipe network is full and water may accumulate on the ground. At this time, the siphon system will be affected by the support of the full municipal rainwater well, which prolongs the time for siphon formation, reduces the drainage capacity of the system, and the rainwater collected on the roof cannot be removed in time, resulting in overflow from the roof into the room, thereby causing significant economic losses and even affecting pedestrian safety.

[0016] Therefore, an auxiliary drainage system is necessary. To avoid the impact of the municipal rainwater well's jacking, it needs to be installed on the riser above the ground. Based on the sensing of the jacking pressure, the drain port is opened in a timely manner to drain the water collected on the roof and ensure the safety of the system. The prerequisite for preventing the drainage system from opening is a pressure sensor signal or a more economical spring preload. When the drainage in the siphon drainage riser is not smooth and the pressure rises to about 100kpa, the baffle of the auxiliary drainage system opens due to the pressure of the spring (the opening pressure can be adjusted according to the height of the project and the location of the ground drainage). The auxiliary baffle is calculated based on the highest historical rainfall to squeeze the limit baffle position. Until the rainfall intensity decreases, the preload spring gradually resets, and the rainwater in the drainage riser is discharged to the municipal pipe network again.

[0017] Another object of the present invention is to provide an auxiliary drainage system for siphonic roof drainage, comprising an auxiliary drainage pipe installed on a siphon drainage riser, an auxiliary baffle provided in the middle of the auxiliary drainage pipe, the inner side of the auxiliary baffle being fixed in the auxiliary drainage pipe by an auxiliary system pre-compression device; and a limit baffle matching the auxiliary baffle provided on the inner wall of the auxiliary drainage pipe.

[0018] A fixing device is installed at the lower end opening of the auxiliary drainage pipe member, and a one-way flap door is provided on the fixing device.

[0019] In one embodiment, the auxiliary drainage pipe is fixed to the siphon drainage riser via a mounting collar, and a plurality of fixing wing rings are provided at the end of the mounting collar.

[0020] In one embodiment, the auxiliary drainage pipe is installed at the lower end of the siphon drainage riser close to the ground.

[0021] In one embodiment, a magnetic block matching the one-way flap door is installed on the fixing device.

[0022] Combining all the above technical solutions, the advantages and positive effects of the present invention are as follows:

[0023] 1. Effectively improve the riser and gutter pressure when the pipe network is full, avoiding flooding on the roof or building area;

[0024] 2. Actively improve the drainage capacity of the siphon system, change the passive drainage state of the siphon system, improve the safety of the system drainage, and ensure the safety of the building;

[0025] 3. It is not affected by the full flow of the municipal pipe network and is discharged to the ground when there is an overflow risk;

[0026] 4. It adopts pressure sensing automatic control, and the pre-pressure of the auxiliary baffle is set by adjusting the position of the spring. The position of the plate behind the spring can be adjusted forward and backward relative to the axial direction of the spring to achieve the opening pressure; different pressure opening values ​​can be set, which is suitable for roof drainage of buildings with different building heights;

[0027] 5. Install it beside the normal drainage system and do not affect the normal siphon drainage system;

[0028] 6. As an accessory similar to an inspection port, it is connected to the pipeline with a flange to facilitate installation, inspection and maintenance.

[0029] 7. The roof drainage system emphasizes high efficiency and speed. The device can minimize the impact of the environment on the drainage effect of the system, and the system can operate independently;

[0030] 8. Improve the drainage capacity of the siphon system in extreme weather conditions and reduce the risk of roof overflow. The device can set the automatic opening discharge pressure and operate automatically based on the system hydraulic calculation results;

[0031] 9. The device is set at 0.2~0.8m from the ground, which is convenient for installation, maintenance, replacement, etc., and the impact of water discharge on the ground is small on the environment;

[0032] 10. The device can be connected to the building BIM system to realize intelligent monitoring of the device, rain pattern, and timely feedback of device failures;

[0033] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0035] Figure 1 This is a schematic diagram of the location layout of an auxiliary drainage system for siphonic roof drainage provided by an embodiment of the present invention;

[0036] Figure 2 Schematic diagram of an auxiliary drainage system for siphonic roof drainage provided by an embodiment of the present invention;

[0037] In the figure: 1. Siphon drainage riser; 2. Auxiliary drainage pipe fittings; 3. Auxiliary baffle; 4. Auxiliary system pre-pressure device; 5. Fixing device; 6. One-way flap door; 7. Limit baffle; 8. Fixed wing ring; 9. Pressure sensor; 10. Sensor protection structure; 11. Signal transmission device; 12. Operation and processing device. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] To address the impact of full flow in the municipal pipe network on the siphon system's jacking, a drainage method is needed that is unaffected by jacking and can automatically open and close according to the influence of pressure. The present invention adds a component that increases drainage capacity at a certain height position on the siphon drainage riser 1. When the siphon system is affected by jacking, the flow velocity in the pipe decreases, the flow rate is reduced, the resistance loss is reduced, and the pressure increases. When the opening pressure is reached, rainwater overflows and drains from this position, ensuring normal operation under all circumstances without placing excessive pressure on the roof and gutters.

[0040] The present invention provides an auxiliary drainage method for siphonic roof drainage, comprising: collecting the water pressure in the siphon drainage riser 1 or the gutter in real time through a pressure sensor 9; if the current water pressure exceeds a set critical value, the auxiliary baffle 3 connected to the auxiliary system pre-pressure device 4 is started to open, and the water accumulated in the roof and the gutter is discharged to the ground.

[0041] In a preferred embodiment of the present invention, the critical value is set to 100 kPa; the opening pressure of the auxiliary baffle 3 is adjusted according to the height of different projects and the ground distribution position.

[0042] The auxiliary baffle 3 calculates the extrusion position of the limit baffle 7 according to the historical maximum rainfall.

[0043] The preload of the auxiliary baffle 3 is set by adjusting the position of the spring in the auxiliary system preload device 4. The position of the auxiliary baffle 3 at the rear of the spring is adjusted forward and backward relative to the axial direction of the spring to achieve the opening pressure.

[0044] In a preferred embodiment of the present invention, the pressure in the siphonic drainage riser 1 exceeds the set value, and the auxiliary baffle 3 is squeezed to the position of the limit baffle 7; after the auxiliary baffle 3 is opened, rainwater in the siphonic drainage riser 1 flows to the auxiliary drainage pipe fitting 2; the pipe mouth of the auxiliary drainage pipe fitting 2 is provided with a one-way flapper 6 with an opening pressure and in a closed state, and the opening pressure of the auxiliary drainage pipe fitting 2 is less than the opening pressure of the auxiliary baffle 3.

[0045] like Figure 1 As shown, the auxiliary drainage system for the siphonic roof drainage is located at a position close to the ground of the siphonic drainage riser 1 and cannot be set at a too high position, otherwise rainwater in the pipe will easily splash.

[0046] like Figure 2 As shown, the auxiliary drainage system for siphonic roof drainage is connected to the siphonic drainage riser 1 at the top and bottom, but the auxiliary drainage system for siphonic roof drainage does not affect the normal drainage of the siphonic drainage riser 1, does not affect the siphon effect, and the loss can be ignored.

[0047] The auxiliary drainage system for siphonic roof drainage includes: an auxiliary drainage pipe fitting 2 installed on a siphonic drainage riser 1, an auxiliary baffle 3 is provided in the middle of the auxiliary drainage pipe fitting 2, and the inner side of the auxiliary baffle 3 is fixed in the auxiliary drainage pipe fitting 2 by an auxiliary system pre-pressing device 4; the inner wall of the auxiliary drainage pipe fitting 2 is also provided with a limit baffle 7 that matches the auxiliary baffle 3.

[0048] A fixing device 5 is installed at the lower opening of the auxiliary drainage pipe 2, and a one-way flap door 6 is provided on the fixing device 5.

[0049] Pressure sensor 9 measures the pressure within siphon drain riser 1 and gutter after full water flow, then transmits the pressure parameters to processing unit 12. Auxiliary system pre-compression device 4 activates appropriately based on instructions from processing unit 12. Signal transmission device 11 transmits on-site status to a mobile phone or cloud platform for remote monitoring and centralized management. A sensor protection structure 10 is installed in front of pressure sensor 9.

[0050] In a preferred embodiment of the present invention, the auxiliary drainage pipe 2 is fixed to the siphon drainage riser 1 through a mounting collar, and a plurality of fixing wing rings 8 are provided at the end of the mounting collar.

[0051] In a preferred embodiment of the present invention, the auxiliary drainage pipe 2 is installed at the lower end of the siphon drainage riser 1 close to the ground.

[0052] In a preferred embodiment of the present invention, a magnetic block matching the one-way flap door 6 is installed on the fixing device 5 .

[0053] During exceptional rainfall, the pipe network overflows, causing water to accumulate in the siphonic drainage riser 1 and even in the gutter. When the pressure in the siphonic drainage riser 1 rises to 100 kPa, the auxiliary baffle 3 of the auxiliary drainage system for siphonic roof drainage opens. The opening pressure of the auxiliary system pre-compression device 4 is 100 kPa. When the pressure in the siphonic drainage riser 1 rises to 300 kPa, the auxiliary baffle 3 is squeezed to the position of the limit baffle 7, at which point the auxiliary baffle 3 opens to its maximum extent. After the auxiliary baffle 3 opens, rainwater in the siphonic drainage riser 1 flows into the auxiliary drainage pipe 2. A one-way flapper 6 is installed at the pipe opening of the auxiliary drainage pipe 2 via a fixing device 5. This one-way flapper 6 is normally closed and has a certain opening pressure, but this opening pressure is lower than that of the auxiliary baffle 3. This flapper 6 effectively prevents gas and insects from entering the main pipe and affecting the formation of a siphon, allowing rainwater in the pipe to drain quickly to the ground.

[0054] When a pressure sensor 9, installed on the device, reaches a set critical value, the device automatically activates. A water retaining plate is connected to the auxiliary system preload device 4 to achieve automatic activation. This auxiliary drainage system for siphonic roof drainage actively increases the drainage capacity of the siphon system, preventing water from accumulating on the roof and gutters during heavy rains exceeding the designed return period, causing economic losses and personal injury. It also ensures the safety of the roof structure. This increased drainage capacity is unaffected by other drainage systems. During heavy rainfall, when the municipal pipe network is full, the drainage capacity of the roof drainage system is affected by the support of the municipal pipe network, and the original system's drainage capacity cannot reach the set value, thus affecting the system's drainage safety. The system automatically activates approximately 1.0m above the ground, unaffected by the full flow of the municipal pipe network. The use of an adjustable pressure sensor 9 allows for a wide range of applications. The device's pressure limit switch can be set and adjusted between 50kN and 50kN, making it suitable for buildings 10m to 50m high. In the positive pressure area at the bottom of the riser, the normal drainage system is not affected. During normal operation, when the outlet is not blocked or supported, the normal drainage system runs stably. At the installation location of the device, there will be no large positive pressure fluctuations. The device is in a closed state and does not affect the normal drainage system.

[0055] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0056] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited by the appended claims.

Claims

1. An auxiliary drainage system for siphonic roof drainage, characterized in that: The system comprises an auxiliary drainage pipe fitting (2) installed on a siphon drainage riser (1), an auxiliary baffle (3) being provided in the middle of the auxiliary drainage pipe fitting (2), the inner side of the auxiliary baffle (3) being fixed in the auxiliary drainage pipe fitting (2) via an auxiliary system pre-pressing device (4); and a limit baffle (7) matching the auxiliary baffle (3) being provided on the inner wall of the auxiliary drainage pipe fitting (2); The preload of the auxiliary baffle (3) is set by adjusting the position of the spring in the auxiliary system preload device (4), and the position of the auxiliary baffle (3) at the rear of the spring is adjusted forward and backward relative to the axial direction of the spring to achieve opening; when a set critical value is reached by a pressure sensor (9) provided on the device, the baffle is connected to the auxiliary system preload device (4) to achieve automatic opening; When the pressure in the siphon drainage riser (1) exceeds the set value, the auxiliary baffle (3) is squeezed to the position of the limit baffle (7); after the auxiliary baffle (3) is opened, rainwater in the siphon drainage riser (1) flows to the auxiliary drainage pipe (2); the pipe opening of the auxiliary drainage pipe (2) is provided with a one-way flapper (6) with an opening pressure and in a closed state, and the opening pressure of the pipe opening of the auxiliary drainage pipe (2) is less than the opening pressure of the auxiliary baffle (3); The auxiliary baffle (3) calculates the position of the limit baffle (7) according to the highest rainfall in history.

2. The auxiliary drainage system for siphonic roof drainage according to claim 1, characterized in that: A fixing device (5) is installed at the lower end opening of the auxiliary drainage pipe (2), and a one-way flap door (6) is provided on the fixing device (5); The auxiliary drainage pipe member (2) is fixed to the siphon drainage riser (1) via a mounting collar, and a plurality of fixing wing rings (8) are provided at the end of the mounting collar.

3. The auxiliary drainage system for siphonic roof drainage according to claim 1, characterized in that: The auxiliary drainage pipe (2) is installed at a position close to the ground at the lower end of the siphon drainage riser (1).

4. The auxiliary drainage system for siphonic roof drainage according to claim 2, characterized in that: The fixing device (5) is provided with a magnetic block that matches the one-way flap door (6).

5. An auxiliary drainage method for siphonic roof drainage, the method using the auxiliary drainage system for siphonic roof drainage according to any one of claims 1 to 4, the auxiliary drainage method for siphonic roof drainage comprising: The pressure sensor (9) collects the water pressure in the siphon drainage riser (1) and the gutter in real time. When the current water pressure exceeds the set critical value, the auxiliary baffle (3) connected to the auxiliary system pre-pressure device (4) is activated to open, and the water accumulated in the roof and the gutter is dispersed and discharged to the ground.

6. The auxiliary drainage method for siphonic roof drainage according to claim 5, characterized in that: The set critical value is 100kPa; the opening pressure of the auxiliary baffle (3) is adjusted according to the height of different projects and the ground distribution position.

7. The auxiliary drainage method for siphonic roof drainage according to claim 5, characterized in that: The auxiliary drainage method for siphonic roof drainage also includes: a pressure sensor (9) measures the pressure state of the siphonic drainage riser (1) and the gutter after the water is fully flowing, and then transmits the pressure parameter to the operation processing device (12); the auxiliary system pre-pressure device (4) is turned on according to the instruction given by the operation processing device (12); and the signal transmission device (11) transmits the signal to the mobile phone terminal or the cloud platform according to the on-site status for remote monitoring and centralized management.

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