CN105256858B - Water delivery device, rainwater collection system and exhaust method thereof - Google Patents
Water delivery device, rainwater collection system and exhaust method thereof Download PDFInfo
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- CN105256858B CN105256858B CN201510727548.0A CN201510727548A CN105256858B CN 105256858 B CN105256858 B CN 105256858B CN 201510727548 A CN201510727548 A CN 201510727548A CN 105256858 B CN105256858 B CN 105256858B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 280
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009423 ventilation Methods 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims description 13
- 238000013022 venting Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 241001148471 unidentified anaerobic bacterium Species 0.000 abstract description 3
- 238000009395 breeding Methods 0.000 abstract 1
- 230000001488 breeding effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 31
- 239000008400 supply water Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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Abstract
The invention provides a water delivery device with an exhaust function, which comprises a water delivery tunnel, a ventilation vertical shaft, an exhaust device arranged in the ventilation vertical shaft and a vertical shaft check valve, wherein gas in the water delivery tunnel can be exhausted, so that negative pressure is formed in the water delivery tunnel, bubbles in water can be reduced, the stability of water flow is facilitated, damage to the inner wall of the water delivery tunnel caused by the breakage of compressed bubbles can be prevented, and meanwhile, anaerobic bacteria breeding can be restrained from damaging the inner wall of the water delivery tunnel. The invention also provides a rainwater collecting system and an exhaust method thereof, the rainwater collecting device comprises the water delivery device and the drop device, the drop device can reduce the amount of gas entering the water delivery tunnel, the water delivery device can exhaust the gas in the water delivery tunnel, and the exhaust effect is better under the cooperation of the water delivery device and the drop device.
Description
Technical Field
The invention relates to a water delivery device, a rainwater collection system and an exhaust method thereof.
Background
Based on incomplete statistics: in 500 cities in China, the number of cities with urban waterlogging is up to 300, and cities such as Beijing, shanghai, wuhan and the like become victims of urban waterlogging. The construction of deep underground regulation tunnels in the countries such as the United states and Japan is simulated, and China is also added into the construction line of the novel underground tunnels. In the deep regulation tunnel drainage system, water flow of the subsurface water system flows into an underground tunnel through a water drop device under the action of gravity and finally flows into a water treatment facility.
However, when rainwater falls vertically in a drop shaft or hits the bottom of a drop pool by gravity, part of the air is inevitably sucked up. When too much gas enters the water transport tunnel, compressed bubbles are formed in the water transport tunnel, resulting in: (1) Compressing the bubbles and the gas results in a reduced water transport capacity of the water transport tunnel; (2) The pipe wall of the tunnel can be impacted by the rupture of the compressed air bubbles, so that the structure of the water delivery tunnel can be damaged for a long time, and the service life of the water delivery tunnel is reduced; (3) Gases produced in anaerobic environments cause odors and attack internal structures and components. A good exhaust system must therefore be provided to ensure the hydraulic characteristics of the water transport tunnel system and to prevent damage to the shaft and tunnel by the gas.
Disclosure of Invention
The invention mainly aims to provide a water delivery device with an exhaust function and a rainwater collection system, which are used for exhausting gas entering a water delivery tunnel, avoiding compressed bubbles from disturbing water flow and preventing the inner wall of the tunnel from being damaged when the compressed water bubbles are broken. The invention also provides an exhaust method of the rainwater collection system.
In order to solve the technical problems, the invention comprises the following technical scheme:
the utility model provides a water delivery device, includes water delivery tunnel and ventilation shaft, ventilation shaft's top has the vent, the bottom communicates to water delivery tunnel, ventilation shaft in from top to bottom be provided with exhaust apparatus and shaft check valve.
Further, a capillary water filtering device is arranged in the ventilation vertical shaft, the capillary water filtering device is positioned at the joint of the ventilation vertical shaft and the water conveying tunnel, and the vertical shaft check valve is positioned above the capillary water filtering device.
Preferably, the capillary water filter device is provided with a water film differential pressure controller.
Preferably, the capillary water filtering device comprises a simple harmonic vibrator.
Preferably, the simple harmonic vibrator, the exhaust device and the shaft check valve are in interlocking control. The interlock control means that the above-mentioned components start to operate or stop operating simultaneously, or start to operate or stop operating sequentially in a certain order.
Preferably, the top of the ventilation shaft extends out of the ground for a certain distance, a baffle is arranged at the top of the ventilation shaft, and a transverse ventilation opening is arranged at the part, extending out of the ground, of the ventilation shaft.
The rainwater collection system comprises a water delivery device and a drop device, wherein the drop device comprises a drop tank, a drop well arranged on the drop tank and a transverse channel communicated with the bottom of the drop tank, the bottom of the water delivery channel is communicated with the bottom of the drop tank through the transverse channel, and a transverse channel check valve is arranged in the transverse channel.
Further, the drop device further includes:
the water supply pipeline is communicated with the drop well;
the ball float valve is arranged in the water fall well and can open or close the water supply pipeline according to the liquid level change in the water fall well.
The invention also provides an exhaust method of the rainwater collecting system, wherein the rainwater collecting system comprises the water delivery device, the water delivery device is used for exhausting, and the exhaust method comprises the following steps:
s1, sequentially or simultaneously opening the exhaust device and a shaft check valve, and exhausting gas from the ventilation opening through the ventilation shaft in the water conveying tunnel;
and S2, sequentially or simultaneously closing the vertical shaft check valve and the exhaust device.
The invention also provides an exhaust method of the rainwater collection system, which comprises the water delivery device and exhaust by using the water delivery device, and comprises the following steps:
s1', presetting the pressure difference delta P at two ends of the capillary water filtering device 0 And presetting a negative pressure value P relative to the ground atmospheric pressure 0 ；
S2', the water film differential pressure controller measures the pressure difference delta P at two ends of the capillary water filter device 1 And measuring the pressure value P of the gas at the top end of the water delivery tunnel 1 ，
When DeltaP 1 ＜△P 0 In the initial state, the simple harmonic vibrator, the exhaust device and the shaft check valve are in a closed state,
when DeltaP 1 ≥△P 0 When the simple harmonic vibrator, the exhaust device and the vertical shaft check valve are sequentially or simultaneously opened, gas in the water delivery tunnel is exhausted, and the pressure P in the water delivery tunnel is increased 1 Gradually decrease when P 1 ≤P 0 And closing the shaft check valve, the exhaust device and the simple harmonic vibrator sequentially or simultaneously.
Compared with the prior art, the invention has the following advantages and positive effects due to the adoption of the technical scheme:
(1) Through setting up exhaust apparatus, can discharge the gas in the water delivery tunnel, form the negative pressure in making the water delivery tunnel to can reduce aquatic bubble, be favorable to the stability of rivers, and can prevent to cause the harm of water delivery tunnel inner wall when compressing the bubble and break, can also restrain simultaneously and breed the anaerobic bacteria to the destruction of water delivery tunnel inner wall. By arranging the shaft check valve, the outside air can be prevented from entering the water delivery tunnel through the ventilation shaft under the condition that the air exhausting device stops working.
(2) Through setting up capillary water filter, the water droplet in the filtered gas has improved the exhaust efficiency of exhaust apparatus and shaft check valve, has still avoided steam to produce the destruction to exhaust apparatus and shaft check valve.
(3) Through setting up water film differential pressure controller, can set for the default as required, automatic control exhaust apparatus and the opening and close of shaft check valve realize the automation of water delivery device exhaust function.
(4) Through setting up and being equipped with simple harmonic vibrator, can make capillary water filter device produce simple harmonic vibration to can filter smaller water droplet, produce better effect of filtering the water droplet.
(5) Through set up ball cock, water supply pipe in the drop device with water delivery device intercommunication, can guarantee to keep the water level that has a take the altitude all the time in the drop well, avoid the direct impact with drop bottom of the pool portion of rainwater, reduced the quantity of the compressed air bubble that forms to the gas in the entering water delivery tunnel has been reduced.
Drawings
FIG. 1 is a schematic view of a longitudinal section of a water delivery device according to an embodiment of the present invention;
fig. 1a and fig. 1b are schematic longitudinal section structures of a vent according to an embodiment of the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of a stormwater collection system in accordance with an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is an exhaust flow chart of a rainwater collection system according to an embodiment of the present invention;
FIG. 5 is an exhaust flow chart of a rainwater collection system according to another embodiment of the present invention;
fig. 6 is an exhaust flow chart of a rainwater collection system according to another embodiment of the present invention.
The labels in the figures are as follows:
a water delivery device 100; a water delivery tunnel 110; a water level 111 in the tunnel; a ventilation shaft 120; vents 121, 121a,121b; a baffle 122; an exhaust device 130; a shaft check valve 140; capillary filter means 150;
a drop pool 200; drop shaft 210; a warning water level 211, a water storage reference water level 212, an actual water level 213; a grill cover 220; a float valve 230; a water supply pipe 240;
a lateral passage 300, a lateral passage check valve 310.
Detailed Description
The water delivery device, the rainwater collecting system and the exhaust method thereof provided by the invention are further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the invention will become more apparent in conjunction with the following description and claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic longitudinal sectional view of a water delivery device 100 according to an embodiment of the invention. The water delivery device 100 comprises a water delivery tunnel 110 and a ventilation shaft 120, wherein the ventilation shaft 120 is provided with a ventilation opening 121 at the top and is communicated with the water delivery tunnel 110 at the bottom. The ventilation shaft 120 is provided therein with an exhaust 130 from top to bottom and a shaft check valve 140.
In this embodiment, the exhaust device 130 and the shaft check valve 140 are opened, so that the gas in the water tunnel 110 can be exhausted, and when the exhaust is not needed, the shaft check valve 140 and the exhaust device 130 are closed. The advantages of this embodiment are: through setting up exhaust apparatus 130, can discharge the gas in the water delivery tunnel 110, make the formation negative pressure in the water delivery tunnel 110 to can reduce the aquatic bubble, be favorable to the stability of rivers, and can prevent to cause the harm of water delivery tunnel 110 inner wall when compressing the bubble and break, can also restrain simultaneously and breed anaerobic bacteria and destroy the water delivery tunnel 110 inner wall. By providing the shaft check valve 140, the outside air is prevented from entering the water delivery tunnel 110 through the ventilation shaft 120 in the event that the air discharge device 130 is stopped.
Further, a capillary filter device 150 is preferably further disposed in the ventilation shaft 120, and the capillary filter device 150 is located at the connection between the ventilation shaft 120 and the water delivery tunnel 110. The capillaries in the capillary filter 150 are in the micron scale, preferably the capillaries contain a large number of primary capillaries and micron scale capillary branches. The water vapor rising in the water delivery tunnel 110 is adsorbed on the wall of the capillary tube by the adhesion force of the wall of the capillary tube, and after entering the capillary tube, the water film is formed in the capillary tube due to the cohesive force of the water drop. Under the suction action of the air exhaust device 130, a hole is formed in the middle of the water film, and the air in the water delivery tunnel 110 passes through the hole in the water film, through the shaft check valve 140 and the air exhaust device 130, and finally is exhausted from the ventilation opening 121 of the air shaft 120. The capillary filter device 150 has the advantages that the wet water vapor can affect the efficiency of the exhaust device 130 and the shaft check valve 140 and even damage the same, and the capillary filter device 150 filters the water in the water vapor and only allows the gas to pass through, so that the efficiency of the exhaust device 130 and the shaft check valve 140 is improved, and the exhaust device and the shaft check valve 140 are protected.
Further, it is preferable that a water film differential pressure controller is provided on the capillary filter device 150. The pressure difference may be formed at both ends of the capillary filter device 150 due to the existence of a water film in the capillary tube, and the water film pressure difference controller can monitor the gas pressure difference Δp at both sides of the capillary filter device 150. When the gas in the water delivery tunnel 110 is too much, the pressure in the tunnel will increase, so that the pressure of the capillary filter device 150 at one end close to the water delivery tunnel 110 is greater than the pressure of the capillary filter device 150 at the other end far from the water delivery tunnel 110. The capillary filter device 150 operates as follows: given a preset pressure difference DeltaP 0 Air pressure difference delta P at two sides of capillary water filter 150 detected by water film pressure difference controller 1 When DeltaP 1 ≥△P 0 When the exhaust device 130 and the shaft check valve 140 are opened, the gas in the water delivery tunnel 110 is discharged; along with the discharge of the gas, the gas pressure in the water delivery tunnel 110 is gradually reduced and negative pressure is formed, and the gas pressure P in the tunnel is preset 0 Assume that a water film differential pressure controllerThe monitored gas pressure in the water delivery tunnel 110 is P 1 When P 1 ≤P 0 When the shaft check valve 140 and the exhauster 130 are closed. The water film differential pressure controller has the advantages that the preset value can be set according to the requirement, and the opening and closing of the exhaust device 130 and the vertical shaft check valve 140 are automatically controlled through the relation between the monitoring value of the water film differential pressure controller and the preset value, so that the automation of the exhaust function of the water delivery device 100 is realized.
Further, preferably, the capillary water filter device 150 is provided with a simple harmonic vibrator, and the simple harmonic vibrator can drive the capillary water filter device 150 to vibrate in a simple harmonic manner when being started, so that smaller water drops can be filtered, and a better effect of filtering the water drops is achieved. Preferably, the simple harmonic vibrator of the capillary filter device 150, the exhauster 130 and the shaft check valve 140 are controlled in linkage. The interlock control means that the respective components start to operate in a certain order or simultaneously. The preferred opening sequence is that the simple harmonic vibrator, the exhaust 130 and the shaft check valve 140 are sequentially opened; the preferred closing sequence is one in which the shaft check valve 140, the exhaust 130 and the simple harmonic vibrator are closed sequentially.
Referring to fig. 1a and fig. 1b, and referring to fig. 1, fig. 1a and fig. 1b are schematic longitudinal sectional views of a vent according to an embodiment of the invention. In order to prevent rainwater from entering the ventilation shaft 120 through the ventilation opening 121 and affecting the efficiency of the air exhaust device 130, besides providing the baffle 122 as shown in fig. 1, the ventilation opening 121 may be provided as a transverse ventilation opening 121a as shown in fig. 1a, and may be provided as a T-shaped ventilation opening 121b, which has better air exhaust and waterproof effects than the arrangement of the baffle 122 only on the through shaft.
Example two
Referring to fig. 2, 3, and fig. 1, 1a and 1b, fig. 2 is a schematic longitudinal section view of a rainwater collecting system according to an embodiment of the present invention, and fig. 3 is a schematic cross-sectional view along A-A shown in fig. 2.
The present embodiment provides a rainwater collecting system, including the water delivery device 100 and the drop device 400 as embodied. The drop device 400 comprises a drop pool 200, a drop well 210 arranged on the drop pool 200, and a transverse channel 300 communicated with the bottom of the drop pool 200, wherein the bottom of the water delivery tunnel 110 is communicated with the bottom of the drop pool through the transverse channel, and a transverse channel check valve is arranged in the transverse channel. Rainwater flows into the drop tank 200 through the drop shaft 210, rainwater and air sucked in from the drop tank 200 through the lateral passage 300 flows into the water delivery tunnel 110 of the water delivery device 100 in a state where the lateral passage check valve 310 is opened, and air in the water delivery tunnel 110 is discharged through the ventilation opening 121 on the ventilation shaft 120 by suction of the air discharging device 140 provided in the ventilation shaft 120.
Further, in a preferred embodiment, the drop device 400 further includes a water supply pipe 240, and the water supply pipe 240 is in communication with the drop shaft 210; also included is a ball float valve 230 disposed within the drop shaft 210, the ball float valve 230 being capable of opening or closing a water supply conduit 240 in response to a change in the fluid level within the drop shaft 210. The preferred mode of this embodiment is to preset the height value H of the water storage reference level 212 2 Assume that the height of the water level 213 in the drop shaft is H 3 At H 3 <H 2 When the ball float valve 230 moves downwards, the water supply pipeline 240 is driven to be opened for supplying water; at H 3 ≤H 2 When the ball float valve 230 is moved upward, the water supply to the water supply pipe 240 is stopped. For example, it can be arranged that when H 3 And H is 2 When the difference reaches 10cm and lasts for 30s, the ball float valve 230 controls the water supply pipe 240 to supply water. The advantages of this embodiment are: when rainwater falls from the drop shaft 210, a large amount of compressed water bubbles can be generated under the condition of directly impacting the bottom of the drop tank 200 and enter the water delivery tunnel 110 of the water delivery device 100 through the transverse channel 300, and the opening and closing of the water supply pipeline 240 are controlled by arranging the ball float valve 230, so that the water level of a certain height in the drop shaft 210 can be ensured all the time, the rainwater is prevented from directly impacting the bottom of the drop tank 200, the number of the formed compressed water bubbles is reduced, and the gas entering the water delivery tunnel 110 is reduced.
In addition, the ball float 230 is constructed in such a way that it includes a ball float and a water supply valve. The ball float valve 230 controls the working mode of the water supply pipeline 240, namely, the ball float is mechanically controlled, namely, the ball float is connected with the water supply valve through a diagonal rod, and the vertical displacement of the ball float drives the water supply valve to be opened and closed; secondly, the ball float valve 230 can detect the position information of the floating ball and can realize automatic opening and closing of the water supply valve according to the relation between the position information and the preset warning water level 211 and the preset water storage reference water level 212.
In addition, in another embodiment of the lateral channel check valve 310, the lateral channel check valve 310 is an intelligent valve, and can detect the pressure at the valve end, and according to the detected pressure at the valve end and the relationship between the detected pressure at the valve end, the preset warning water level 211 and the converted pressure of the water storage reference water level 212, the lateral channel check valve 310 is opened and closed.
Furthermore, the preferred embodiment is that the water storage reference level 212 is equal to the actual water level 111 of the water delivery device 100. One implementation of this may be that the lateral channel check valve 310 is an intelligent valve, and the actual water level 111 in the water delivery device 100 is measured by the detected pressure on one side of the water delivery device 100, and the value is set as the water storage reference level 212. The advantages are that: the control of the water storage reference level 212 is substantially equal to the actual water level 111 in the water delivery tunnel, so that the water pressure on both sides of the cross-channel check valve 310 is substantially equal, thus prolonging the service life of the cross-channel check valve 310 and reducing maintenance cost.
In addition, in order to collect rainwater, the top end of the drop shaft 210 is provided in a divergent shape. For safety, and to be able to filter large volumes of impurities in the rainwater, a grid cover plate 220 is provided at the top end of the drop shaft 210.
Example III
Referring to fig. 4, and referring to fig. 1 to 3, fig. 4 is a flow chart of an exhaust of a rainwater collecting system according to an embodiment of the present invention. In this embodiment, there is provided an exhaust method of a rainwater collecting system, the exhaust method of the rainwater collecting system using the water delivery device 100 of the rainwater collecting system of the second embodiment, that is, using the water delivery device 100 of the first embodiment, the exhaust method includes the following steps:
s1, the exhaust device 130 and the shaft check valve 140 are sequentially or simultaneously opened, and the gas is discharged from the ventilation opening 121 through the ventilation shaft 120 from the water delivery tunnel 110. To avoid gas entering the water tunnel from the ventilation shaft 120 when opening the shaft check valve 140, the vent 130 may be first opened, or both the vent 130 and the shaft check valve 140 may be opened.
And S2, sequentially or simultaneously closing the shaft check valve 140 and the exhaust device 130. To avoid gas entering the water tunnel from the ventilation shaft 120 when closing the venting device 130, the shaft check valve 140 may be closed first, or both the shaft check valve 140 and the venting device 130 may be closed.
Example IV
Referring to fig. 5, referring to fig. 1 to 3 in combination, fig. 5 is an exhaust flow chart of a rainwater collecting system according to another embodiment of the present invention. The embodiment provides an exhaust method of a rainwater collecting system, which adopts the rainwater collecting system as described in the second embodiment, and mainly uses a water delivery device of the rainwater collecting system for exhaust, and specifically includes the following steps:
s1', presetting the pressure difference delta P between two ends of the capillary filter device 150 0 And presetting a negative pressure value P relative to the atmospheric pressure 0 ；
S2', measuring the pressure difference delta P of two ends of the capillary filter device 150 by the water film pressure difference controller 1 And determines the pressure value P of the gas at the top end of the water delivery tunnel 110 1 ，
When DeltaP 1 ＜△P 0 In the initial state, the simple harmonic oscillator, the exhaust 130 and the shaft check valve 140 are in the closed state,
when DeltaP 1 ≥△P 0 When the simple harmonic vibrator, the exhaust device 130 and the vertical shaft check valve 140 are sequentially or simultaneously opened, the gas in the water delivery tunnel is exhausted, and the pressure P in the water delivery tunnel is increased 1 Gradually decrease when P 1 ≤P 0 At this time, the shaft check valve 140, the exhaust 130 and the simple harmonic vibrator are closed sequentially or simultaneously.
This embodiment is further described below. Wherein, the water film differential pressure controller stores preset delta P 0 、P 0 Values. Wherein,△P 0 for the pressure value of the capillary filter 150 near the water delivery tunnel 410, subtracting the pressure value of the capillary filter 150 far from the water delivery tunnel 110, ΔP 0 Positive values. Wherein P is 0 Is smaller than the normal atmospheric pressure on the ground, namely when the pressure in the water delivery tunnel is P 0 When the tunnel is in use, the air pressure in the tunnel is negative pressure relative to the ground atmospheric pressure.
△P 0 A value can be calculated according to the following formula, and the engineering is actually debugged by the value, so that the most suitable value is finally obtained. The formula is specifically as follows:
△P 0 ＝((G/μf) 2 ) /(2ρ), where G represents the designed exhaust volume of the exhaust device 130 in kg/s; μ represents the flow coefficient of the capillary filter device 450, which is constant; f represents the flow area of the capillary filter device 150, unit m 2 The method comprises the steps of carrying out a first treatment on the surface of the ρ represents the air density of the capillary filter device 150 near the water transport tunnel 110 in kg/m 3 。
Water film differential pressure controller for measuring pressure difference delta P at two ends of capillary water filter 150 1 Pressure value P of gas at top of water delivery tunnel 110 1 When DeltaP 1 ≥△P 0 And when the simple harmonic vibrator, the exhaust device 130 and the vertical shaft check valve 140 are sequentially or simultaneously started, the gas in the water delivery tunnel 110 is exhausted. In order to achieve a better water droplet filtering effect, it may be preferable to first turn on the simple harmonic oscillator. To avoid opening the shaft check valve 440, gas from the ventilation shaft 120 enters the water transport tunnel 110, it may be preferable to first open the venting device 130 relative to the shaft check valve 140, so that venting is better. The simple harmonic vibrator, the exhaust 130 and the shaft check valve 140 may also be simultaneously opened. When P 1 ≤P 0 At this time, the shaft check valve 140, the exhaust 130, and the simple harmonic vibrator are closed sequentially or simultaneously. Wherein DeltaP 1 The pressure value of the capillary filter device 150 at the end close to the water delivery tunnel 110 is subtracted from the pressure value of the capillary filter device 150 at the end far from the water delivery tunnel 110, and the pressure value is the actual measurement value.
Referring to fig. 6, referring to fig. 1 to 3 in combination, fig. 6 is an exhaust flow chart of a rainwater collecting system according to another embodiment of the present invention. The exhaust function of the rainwater collecting system in this embodiment is mainly completed by the drop device 400 in the second embodiment, and the exhaust method includes the following steps:
preset warning water level value H 1 And the water storage reference water level value H 2 The actual water level in the drop shaft is H 3 ，
When H is 2 ≤H 3 ＜H 1 When both the cross-way check valve 310 and the float valve 230 are in a closed state;
when H is 3 ≥H 1 When the horizontal passage check valve 310 is opened, rainwater flows into the water delivery device 100 from the drop pool 200 through the horizontal passage 300, and the actual water level H in the drop shaft 210 3 Down to H 3 ＜H 1 When the lateral passage check valve 310 is closed;
when H is 3 ＜H 2 The ball float valve 230 controls the water supply pipeline 240 to supply water to the drop pool 200, and the actual water level H in the drop shaft 210 3 Up to H 3 ＝H 2 When the float valve 230 is closed, the water supply pipe 240 stops supplying water.
This embodiment is further described below.
In the present embodiment, the initial state of the drop device 400 is that both the water supply pipe 240 and the lateral passage check valve 310 are closed, which corresponds to H 2 ≤H 3 ＜H 1 In the state of (2) only in H 3 ≥H 1 When or when H 3 ＜H 2 The cross-way check valve 310 or the ball float valve 230 in the drop device 100 is triggered.
When H is 3 ≥H 1 When the transverse passage check valve 310 is opened, rainwater is discharged from the drop tank 200, so H 3 Descending, when H 3 ＝H 2 In this case, the lateral passage check valve 310 is closed so that the water level in the drop tank 200 is near the stored reference water level 212. By way of example, one of the modes of opening the lateral passage check valve 310 is the value H of the actual water level 213 in the drop tank 200 3 At a value H of the alert level 212 1 When applied, the pressure acting on the cross-channel check valve 310 may force it open; the second opening mode is the transverse throughThe check valve 310 is an intelligent valve, and a preset warning water level 211 value H is stored in the intelligent valve 1 The lateral passage check valve 310 detects the water pressure in the drop tank 200 and converts it into the water level H in the drop tank 3 When H 3 ≥H 1 When the lateral passage check valve 310 is opened; the third opening mode is that the transverse channel check valve 310 receives the value H of the actual water level 213 in the drop tank 200 transmitted by the ball float valve 230 3 When H 3 ≥H 1 When the lateral passage check valve 310 is opened.
When H is 3 ＜H 2 When the ball float valve 230 controls the water supply pipeline 240 to supply water to the drop tank 200, H 3 Ascending when H 3 ≥H 2 When the ball float valve 230 controls the water supply pipe 240 to stop supplying water to the drop tank 200. By way of example, one configuration of the float valve 230 is that the float valve includes a float ball that detects the actual water level 213 in the drop shaft and a water supply valve that is responsible for opening and closing the water supply pipe 240. For example 1, the ball float valve 230 controls the water supply pipeline 240 in a mechanical control manner, that is, the ball float is connected with the water supply valve through a diagonal rod, and the vertical displacement of the ball float drives the water supply valve to be opened and closed; for example 2, the manner of controlling the water supply pipeline 240 by the ball float valve 230 is intelligent control, and the water supply valve can be automatically opened and closed according to the actual water level 213 in the drop shaft detected by the ball float valve 230, and the preset relationship between the warning water level 211 and the water storage reference water level 212. By way of example, when H 3 And H is 2 When the difference reaches 10cm and lasts for 30s, the ball float valve 230 controls the water supply pipe 240 to supply water. The method of controlling the closing of the water supply pipe 240 by the ball float valve 230 is similar to the method of controlling the opening of the water supply pipe 240 by the ball float valve 230, and will not be described again.
According to the air exhaust method, when the actual water level 213 in the drop shaft drops to the water storage datum water level 212, the transverse channel check valve 310 is closed, water is not discharged any more, and when the actual water level 213 in the tank is lower than the datum water level, the water supply pipeline 240 is started to supply water to the drop tank 200 until the actual water level 213 in the drop tank reaches the water storage datum water level 212, so that the water level of the actual water level 213 in the drop shaft 210 is ensured to be basically maintained at the height of the water storage datum water level 212, rainwater is prevented from directly colliding with the bottom of the drop tank 200, the number of formed compressed bubbles is reduced, and gas entering the water delivery tunnel 110 is reduced.
The preferred embodiment is that the level of the water storage datum 213 is equal to the water level 111 in the water delivery tunnel. Thus, the water pressure on both sides of the check valve 310 is substantially equal, which can extend the service life of the cross-channel check valve 310 and reduce maintenance costs.
In the method for exhausting the rainwater collecting system according to the present embodiment, the drop device of the rainwater collecting system may be used alone to exhaust the rainwater, or the drop device of the rainwater collecting system may be used to exhaust the rainwater at the same time as the water delivery device of the rainwater collecting system is used to exhaust the rainwater (as shown in the third embodiment).
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (7)
1. The water delivery device comprises a water delivery tunnel and a ventilation shaft, wherein the top of the ventilation shaft is provided with a ventilation opening, and the bottom of the ventilation shaft is communicated with the water delivery tunnel; an exhaust device and a shaft check valve are arranged in the ventilation shaft from top to bottom;
a capillary water filtering device is arranged in the ventilation vertical shaft, the capillary water filtering device is positioned at the joint of the ventilation vertical shaft and the water conveying tunnel, and the vertical shaft check valve is positioned above the capillary water filtering device;
the capillary water filter device is provided with a water film pressure difference controller, and the water film pressure difference controller is used for measuring the pressure difference delta P at two ends of the capillary water filter device 1 And measuring the pressure value P of the gas at the top end of the water delivery tunnel 1 The method comprises the steps of carrying out a first treatment on the surface of the When DeltaP 1 ≥△P 0 When the water delivery tunnel is opened, the air exhaust device and the vertical shaft check valve are opened, and air in the water delivery tunnel is exhausted; along with the discharge of the gas, the pressure of the gas in the water delivery tunnel is gradually reduced to form negative pressure, when P 1 ≤P 0 Closing the shaft check valve and the exhaust device; wherein DeltaP 0 Is the preset pressure difference value P of the two ends of the capillary water filtering device 0 Is a preset negative pressure value relative to the ground atmospheric pressure.
2. The water delivery device of claim 1, wherein the capillary filter device comprises a simple harmonic oscillator.
3. The water delivery device of claim 2, wherein the simple harmonic vibrator, the air exhaust device and the shaft check valve are in interlocking control with each other.
4. A rainwater collection system, characterized by comprising the water delivery device of any one of claims 1 to 3 and a drop device, wherein the drop device comprises a drop tank, a drop well arranged on the drop tank and a transverse channel communicated with the bottom of the drop tank, the bottom of the water delivery tunnel is communicated with the bottom of the drop tank by the transverse channel, and a transverse channel check valve is arranged in the transverse channel.
5. The stormwater collection system as claimed in claim 4, wherein the drop device further comprises:
the water supply pipeline is communicated with the drop well;
the ball float valve is arranged in the water fall well and can open or close the water supply pipeline according to the liquid level change in the water fall well.
6. A method of venting a stormwater collection system as claimed in claim 4, wherein the venting method comprises the steps of:
s1, sequentially or simultaneously opening the exhaust device and a shaft check valve, and exhausting gas from the water delivery tunnel through the ventilation opening of the ventilation shaft;
and S2, sequentially or simultaneously closing the vertical shaft check valve and the exhaust device.
7. A method of exhausting a rainwater collection system, the rainwater collection system comprising the water delivery device of claim 2 or 3, the water delivery device being used for exhausting, the method comprising the steps of:
s1', presetting the pressure difference delta P at two ends of the capillary water filtering device 0 And presetting a negative pressure value P relative to the ground atmospheric pressure 0 ；
S2', the water film differential pressure controller measures the pressure difference delta P at two ends of the capillary water filter device 1 And measuring the pressure value P of the gas at the top end of the water delivery tunnel 1 ，
When DeltaP 1 ＜△P 0 In the initial state, the simple harmonic vibrator, the exhaust device and the shaft check valve are in a closed state,
when DeltaP 1 ≥△P 0 When the simple harmonic vibrator, the exhaust device and the vertical shaft check valve are sequentially or simultaneously opened, gas in the water delivery tunnel is exhausted, and the pressure P in the water delivery tunnel is increased 1 Gradually decrease when P 1 ≤P 0 And closing the shaft check valve, the exhaust device and the simple harmonic vibrator sequentially or simultaneously.
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| CN106759765B (en) * | 2016-11-28 | 2019-03-01 | 河海大学 | A kind of rain dirt circulatory system based on sponge city |
| CN107351754B (en) * | 2017-07-24 | 2023-04-18 | 艾迪机器(杭州)有限公司 | Self-walking dry self-suction emergency drainage, waterlogging, fire fighting and power generation integrated device |
| CN111608146A (en) * | 2020-05-08 | 2020-09-01 | 浙江省水利水电勘测设计院 | Pipeline system for jointly conveying raw water with different water qualities |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253739A (en) * | 2002-03-01 | 2003-09-10 | Japan Institute Of Wastewater Engineering Technology | Exhaust structure and exhaust method in pipe line |
| CN1633328A (en) * | 2000-09-13 | 2005-06-29 | 普伦股份公司 | Membrane filter for water treatment |
| CN101881019A (en) * | 2010-07-29 | 2010-11-10 | 中国水利水电科学研究院 | High tailrace level vortex flow flood discharge tunnel and exhaust method of flood discharge tunnel |
| CN101949145A (en) * | 2010-10-09 | 2011-01-19 | 中国水电顾问集团成都勘测设计研究院 | Water supply and drainage system of plunge pool |
| CN103556611A (en) * | 2013-11-05 | 2014-02-05 | 中国水电顾问集团华东勘测设计研究院有限公司 | Plunge pool water filling and discharging system capable of generating electricity |
| CN104294849A (en) * | 2014-10-20 | 2015-01-21 | 中国能源建设集团广东省电力设计研究院 | Exhaust and check system for underground water pipeline |
| CN104499466A (en) * | 2014-12-29 | 2015-04-08 | 中国电建集团中南勘测设计研究院有限公司 | Tailrace tunnel with variable crest elevation |
| CN205369372U (en) * | 2015-10-30 | 2016-07-06 | 上海市政工程设计研究总院（集团）有限公司 | Water delivery device and rainwater collection system |
-
2015
- 2015-10-30 CN CN201510727548.0A patent/CN105256858B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1633328A (en) * | 2000-09-13 | 2005-06-29 | 普伦股份公司 | Membrane filter for water treatment |
| JP2003253739A (en) * | 2002-03-01 | 2003-09-10 | Japan Institute Of Wastewater Engineering Technology | Exhaust structure and exhaust method in pipe line |
| CN101881019A (en) * | 2010-07-29 | 2010-11-10 | 中国水利水电科学研究院 | High tailrace level vortex flow flood discharge tunnel and exhaust method of flood discharge tunnel |
| CN101949145A (en) * | 2010-10-09 | 2011-01-19 | 中国水电顾问集团成都勘测设计研究院 | Water supply and drainage system of plunge pool |
| CN103556611A (en) * | 2013-11-05 | 2014-02-05 | 中国水电顾问集团华东勘测设计研究院有限公司 | Plunge pool water filling and discharging system capable of generating electricity |
| CN104294849A (en) * | 2014-10-20 | 2015-01-21 | 中国能源建设集团广东省电力设计研究院 | Exhaust and check system for underground water pipeline |
| CN104499466A (en) * | 2014-12-29 | 2015-04-08 | 中国电建集团中南勘测设计研究院有限公司 | Tailrace tunnel with variable crest elevation |
| CN205369372U (en) * | 2015-10-30 | 2016-07-06 | 上海市政工程设计研究总院（集团）有限公司 | Water delivery device and rainwater collection system |
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