CN105256877B - Drop device, rainwater collection system and exhaust method of rainwater collection system - Google Patents
Drop device, rainwater collection system and exhaust method of rainwater collection system Download PDFInfo
- Publication number
- CN105256877B CN105256877B CN201510727573.9A CN201510727573A CN105256877B CN 105256877 B CN105256877 B CN 105256877B CN 201510727573 A CN201510727573 A CN 201510727573A CN 105256877 B CN105256877 B CN 105256877B
- Authority
- CN
- China
- Prior art keywords
- water
- drop
- shaft
- check valve
- capillary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 326
- 230000008859 change Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims description 34
- 238000001914 filtration Methods 0.000 claims description 17
- 239000008400 supply water Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 27
- 230000008901 benefit Effects 0.000 description 7
- 241001365789 Oenanthe crocata Species 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 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
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 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
- 235000019645 odor Nutrition 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The invention provides a drop device with an exhaust function, which comprises a drop pool, a drop well, a transverse channel check valve, a ball float valve and a water supply pipeline. The ball float valve can open or close the water supply pipeline according to the liquid level change in the drop well so as to keep the actual water level in the drop pool at the water storage datum water level, prevent rainwater from directly colliding with the bottom of the drop pool, reduce the number of formed compressed bubbles and reduce gas entering the water delivery tunnel. The invention also provides a rainwater collecting system comprising the water drop device and an exhaust method thereof, so that the gas mixed in a water drop tank can be reduced when rainwater is collected, and the gas entering the water delivery device can be timely discharged, thereby playing a certain protection role on the water delivery device.
Description
Technical Field
The invention relates to a drop 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. Therefore, a good rainwater collecting system, a reduced content of entering gas, and a water delivery system with a good exhausting function must be provided to ensure the hydraulic characteristics of the water delivery tunnel system and prevent the damage of gas to the shaft and tunnel.
Disclosure of Invention
The invention aims to provide a drop device with an exhaust function, a rainwater collecting system comprising the drop device and an exhaust method, which are used for reducing compressed gas mixed into a drop pool, so as to reduce gas entering a water delivery tunnel, and exhausting gas in the water delivery tunnel, thereby 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.
In order to solve the technical problems, the invention comprises the following technical scheme:
the utility model provides a drop device, includes the drop pond and set up in drop well on the drop pond, still includes:
the water supply pipeline is communicated with the drop well;
the ball float valve is arranged in the drop shaft and can open or close the water supply pipeline according to the liquid level change in the drop shaft;
and one end of the transverse channel is communicated with the bottom of the drop tank, the other end of the transverse channel is communicated with the bottom of the water delivery device, a transverse channel check valve is arranged in the transverse channel, and when the water level reaches a preset warning water level, the transverse channel check valve is opened, so that the water in the drop tank flows into the water delivery device.
Further, the reference water level of the water storage is equal to the actual water level of the water delivery device.
Further, the float valve is controlled in linkage with the lateral passage check valve.
The invention also discloses a rainwater collection system which comprises the drop device and the water delivery device, wherein the water delivery device is communicated with the bottom of the drop tank through the transverse channel.
Further, the water delivery device includes:
the water delivery tunnel is communicated with the transverse channel and is used for delivering rainwater flowing in by the water drop device;
and the bottom of the ventilation vertical shaft is communicated with the water conveying tunnel, and an exhaust device and a vertical shaft check valve are arranged in the ventilation vertical shaft from top to bottom.
Further, the water delivery device also comprises a capillary water filtering device, the capillary water filtering device is positioned at the joint of the ventilation vertical shaft and the water delivery tunnel, and the vertical shaft check valve is positioned between the capillary water filtering device and the exhaust device.
Further, a water film differential pressure controller is arranged on the capillary water filtering device.
The water film differential pressure controller and the simple harmonic vibrator enable the top of the ventilation shaft to extend out of the ground for a certain distance, a baffle is arranged on the top of the ventilation shaft, and a transverse ventilation opening is formed in the part, extending out of the ground, of the ventilation shaft.
The invention also discloses an exhaust method of the rainwater collection system, which comprises 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 the horizontal channel check valve and the ball float valve are in a closed state;
when H is 3 ≥H 1 When the horizontal channel check valve is opened, rainwater flows into the water delivery device from the drop pool through the horizontal channel, and the actual water level H in the drop well is obtained 3 Down to H 3 ＜H 1 Closing the cross channel check valve when;
when H is 3 ＜H 2 The ball float valve controls the water supply pipeline to supply water to the drop tank, and the actual water level H in the drop shaft 3 Up to H 3 ＝H 2 And when the ball float valve is closed, the water supply pipeline stops supplying water.
Further, the above-mentioned rainwater collecting system's exhaust method, can also utilize water delivery device to carry out the exhaust, water delivery device pass through horizontal passageway with drop tank bottom intercommunication, drop device include water delivery tunnel, communicate in the ventilation shaft of water delivery tunnel and by supreme set gradually in capillary filter, shaft check valve and the exhaust apparatus in the ventilation shaft down, capillary filter is next-door neighbour water delivery tunnel sets up, be equipped with water film differential pressure controller on the capillary filter, capillary filter still includes simple harmonic vibrator, utilize water delivery device to carry out the exhaust and realize through following steps:
s1, presetting a pressure difference delta P between two ends of the capillary water filtering device 0 And presetting a negative pressure value P relative to the 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) The water supply pipeline can supply water to the drop tank by controlling the opening and closing of the water supply pipeline through the ball float valve, so that the water level with a certain height can be always kept in the drop shaft, the direct collision of rainwater and the bottom of the drop tank is avoided, the number of formed compressed bubbles is reduced, and the gas entering the water delivery device is reduced.
(2) The water storage reference water level is controlled to be basically equal to the actual water level in the water delivery tunnel, so that the water pressures at two sides of the transverse channel check valve are basically equal, the service life of the transverse channel check valve can be prolonged, and the maintenance cost is reduced.
(3) Through set up exhaust apparatus in the water delivery device who is connected with drop device, can discharge the gas in the water delivery tunnel, make the formation negative pressure in the water delivery tunnel to can reduce the 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 anaerobic bacteria and destroy the water delivery tunnel inner wall. 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. 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.
Drawings
FIG. 1 is a schematic view of a longitudinal section of a rainwater collection system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure taken along the line A-A shown in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a flow chart of the exhaust of the drop device of the rainwater collection system according to an embodiment of the present invention;
fig. 4 is a flow chart of the exhaust of the water delivery device of the rainwater collection system according to an embodiment of the present invention.
The labels in the figures are as follows:
drop device 100; 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;
a water delivery device 400; a water delivery tunnel 410; a water level 411 in the tunnel; a ventilation shaft 420; a vent 421; a baffle 422; an exhaust device 430; a shaft check valve 440; capillary filter 450.
Detailed Description
The drop device 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 and 2, fig. 1 is a schematic longitudinal sectional view of a rainwater collecting system according to an embodiment of the present invention, and fig. 2 is a schematic cross sectional view of the rainwater collecting system shown in fig. 1 along A-A.
The rainwater collecting system includes a drop device 100 and a water delivery device 400. The drop device 100 comprises a drop tank 200 and a drop shaft 210 arranged on the drop tank 200; a water supply pipe 240, the water supply pipe 240 being in communication with the drop shaft 210; a ball float valve 230 disposed in the drop shaft 210; and a lateral passage 300 having one end communicating with the bottom of the drop tank 200 and the other end communicating with the bottom of the water delivery device 400, and a lateral passage check valve 310 provided inside the lateral passage 300. Wherein, the ball float valve 230 can control the water supply pipe 240 to start or stop the water supply according to the liquid level change in the drop shaft 210. Wherein, when the water level reaches the preset warning water level 211, the lateral passage check valve 310 is opened, so that the water in the falling water tank 200 flows into the water delivery device 400.
In general, when rainwater falls from the drop shaft 210, a large amount of compressed water bubbles are generated in case of directly colliding with the bottom of the drop tank 200, and enter the water delivery tunnel 410 of the water delivery device 400 through the lateral passage 300. The advantages of this embodiment are: by setting the float valve 230 to control the opening and closing of the water supply pipeline 240, the water supply pipeline 240 can supply water to the drop water tank 200, so that the water level of a certain height can be always kept in the drop water well 210, the direct collision of rainwater with the bottom of the drop water tank 200 is avoided, the number of formed compressed bubbles is reduced, and the gas entering the water delivery tunnel 410 is reduced.
In a preferred embodiment, the water supply pipe 240 is opened when the height of the float valve 230 is lower than the preset water storage reference level 213, and the water supply pipe 240 is closed in the opposite direction. Thereby ensuring that the water level 213 in the drop tank 200 is not below the stored reference water level 212. By way of example, one configuration of the float valve 230 is that the float valve includes a float ball that detects the 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 relation between the water level 213 in the drop well detected by the ball float valve 230, the preset warning water level 211 and the water storage reference water level 212.
The preferred embodiment is that the water storage reference level 212 is equal to the actual water level 411 of the water delivery device 400. One implementation of this may be that the lateral channel check valve 310 is an intelligent valve, and the actual water level 411 in the water delivery device 400 is measured by the detected pressure on one side of the water delivery device 400, 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 411 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.
The float valve 230 is preferably controlled in linkage with the cross-way check valve 310. 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. For example, when the float valve 230 is below the water storage reference level 212, the cross channel check valve 310 is closed, and the float valve 230 opens the water supply pipe 240 to supply water, i.e., the float valve 230 is controlled in linkage with the cross channel check valve 310.
Further, the water delivery device 400 includes: a water delivery tunnel 410, the water delivery tunnel 410 being in communication with the lateral channel 300; a ventilation shaft 420, and the bottom of the ventilation shaft 420 is communicated with the water delivery tunnel 410. An exhaust 430 and a shaft check valve 440 are provided in the ventilation shaft 420 in this order from top to bottom. The advantages of this embodiment are: by arranging the exhaust device 430, the air in the water delivery tunnel 410 can be exhausted, so that negative pressure is formed in the water delivery tunnel 410, bubbles in water can be reduced, the stability of water flow is facilitated, the damage to the inner wall of the water delivery tunnel 410 caused by the collapse of compressed bubbles can be prevented, and meanwhile, the damage to the inner wall of the water delivery tunnel 410 caused by the damage of breeding anaerobic bacteria can be restrained; by providing the shaft check valve 440, outside air is prevented from entering the water delivery tunnel 410 through the ventilation shaft 420 in the event that the exhaust 430 is stopped.
In a preferred embodiment, a capillary filter device 450 is also provided in the ventilation shaft 420, and the capillary filter device 450 is located at the junction of the ventilation shaft 420 and the water delivery tunnel 410. The capillaries in the capillary filter 450 are on the order of microns, and preferably contain a large number of primary capillaries and micron-sized capillary branches. The water vapor rising in the water delivery tunnel 410 due to the adhesion force of the capillary wall is absorbed on the capillary wall after entering the capillary, and a water film is formed in the capillary due to the cohesion of the water droplets. Under the suction action of the air exhaust device 430, a hole is formed in the middle of the water film, and the air in the water delivery tunnel 410 passes through the hole in the water film, flows through the shaft check valve 440 and the air exhaust device 430, and finally is exhausted from the ventilation opening 421 of the ventilation shaft 420. The capillary filter device 450 has the advantage that the wet water vapor can affect the efficiency of the exhaust device 430 and the shaft check valve 440, even damage the same, while the capillary filter device 450 filters the water in the water vapor and only allows the gas to pass through, thereby improving the efficiency of the exhaust device 430 and the shaft check valve 440 and protecting the same.
In a preferred embodiment, a water film differential pressure controller is provided on the capillary filter device 450. Due to the presence of a water film in the capillary tube, a pressure differential may exist across the capillary filter device 450, and the water film pressure differential controller is capable of monitoring the gas pressure differential Δp across the capillary filter device 450. When the gas in the water delivery tunnel 410 is too much, the pressure in the tunnel will increase, so that the pressure of the capillary filter device 450 at one end close to the water delivery tunnel 410 is greater than the pressure of the capillary filter device 450 at the other end far from the water delivery tunnel 410. The capillary filter device 450 operates as follows: given a preset pressure difference DeltaP 0 Air at two sides of capillary water filter 450 detected by water film differential pressure controllerDifferential air pressure DeltaP 1 When DeltaP 1 ≥△P 0 When the exhaust device 430 and the shaft check valve 440 are opened, the gas in the water delivery tunnel 410 is discharged; as the gas is exhausted, the gas pressure in the water delivery tunnel 410 gradually decreases and forms a negative pressure, and the gas pressure P in the tunnel is preset 0 Assume that the gas pressure in the water delivery tunnel 410 monitored by the water film differential pressure controller is P 1 When P 1 ≤P 0 When the shaft check valve 440 and the exhaust 430 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 air exhaust device 430 and the vertical shaft check valve 440 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 air exhaust function of the water delivery device 400 is realized.
In a preferred embodiment, the capillary water filter device 450 further includes a simple harmonic vibrator, and when the simple harmonic vibrator is turned on, the simple harmonic vibrator can drive the whole capillary water filter device 450 to vibrate simply, 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 450, the exhaust device 430, and the shaft check valve 440 are interlocked. 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 430 and the shaft check valve 440 are sequentially opened; the preferred closing sequence is one in which shaft check valve 440, exhaust 430 and simple harmonic vibrator are sequentially closed.
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.
In addition, in order to prevent rainwater from entering the ventilation shaft 420 through the ventilation opening 421 and affecting the efficiency of the air exhaust device 430, besides the baffle 422 as shown in fig. 1, the ventilation opening 421 may be set as a transverse ventilation opening and may be set as a T-shaped ventilation opening, which has better air exhaust and waterproof effects than the arrangement of the baffle 122 only on the ventilation shaft.
Example two
Please refer to fig. 3, and please refer to fig. 1 and fig. 2 in combination. Fig. 3 is an exhaust flow chart of the drop device 100 of the rainwater collecting system according to an embodiment of the present invention. The present embodiment provides a method for exhausting a drop device 100 of a rainwater collecting system according to the first embodiment, including:
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 channel check valve 310 is opened, rainwater flows into the water delivery device 400 from the drop pool 200 through the horizontal channel 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 100 is that the water supply pipe 240, 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 acting on the transverse channelThe pressure of the check valve 310 may force it to open; the second opening mode is that the transverse channel 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 410 is reduced.
The preferred embodiment is that the level of the water storage datum 213 is equal to the water level 411 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.
Example III
Please refer to fig. 4, in combination with fig. 1 to 3. Fig. 4 is an exhaust flow chart of a water delivery device 400 of a rainwater collection system according to an embodiment of the present invention. The embodiment provides an exhaust method of a rainwater collecting system according to the first embodiment, which has the exhaust function of implementing the second embodiment, and further can utilize a water delivery device to exhaust, wherein the water delivery device 400 is communicated with the bottom of the drop tank 200 through a transverse channel 310, the water delivery device 400 comprises a water delivery tunnel 410, a ventilation vertical shaft 420 communicated with the water delivery tunnel 410, and a capillary water filtering device 450, a vertical shaft check valve 440 and an exhaust device 430 which are sequentially arranged in the ventilation vertical shaft 420 from bottom to top, the capillary water filtering device 450 is arranged next to the water delivery tunnel 410, a water film differential pressure controller is arranged on the capillary water filtering device 450, the capillary water filtering device further comprises a simple harmonic oscillator, and the exhaust by utilizing the water delivery device 400 is realized by the following steps:
s1, presetting the pressure difference delta P at two ends of the capillary filter device 450 0 And presetting a negative pressure value P relative to the atmospheric pressure 0 ；
S2, measuring pressure difference delta P at two ends of capillary filter 450 by using water film differential pressure controller 1 And determines the pressure value P of the gas at the top end of the water delivery tunnel 410 1 ，
When DeltaP 1 ＜△P 0 In the initial state, the simple harmonic oscillator, the exhaust 430 and the shaft check valve 440 are in a closed state,
when DeltaP 1 ≥△P 0 When the simple harmonic vibrator, the exhaust device 430 and the vertical shaft check valve 440 are sequentially or simultaneously started, the water delivery tunnel is dischargedInternal partial gas, pressure P in water delivery tunnel 1 Gradually decrease when P 1 ≤P 0 At this time, the shaft check valve 440, the exhaust 430 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 DeltaP 0 For the pressure value of the capillary filter 450 near the water delivery tunnel 410, subtracting the pressure value of the capillary filter 450 far from the water delivery tunnel 410, 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 430 in kg/s; μ represents the flow coefficient of the capillary filter device 450, which is constant; f represents the flow area of capillary filter 450, 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 450 near the water transport tunnel 410 in kg/m 3 。
Water film differential pressure controller for measuring pressure difference delta P at two ends of capillary water filter 450 1 Gas pressure value P at top of water delivery tunnel 410 1 When DeltaP 1 ≥△P 0 At this time, the simple harmonic vibrator, the exhaust device 430 and the shaft check valve 440 are sequentially or simultaneously opened to exhaust the gas in the water tunnel 410. 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 420 enters the water transport tunnel 410, so it may be preferable to first open the venting device 430 relative to the shaft check valve 440, which may provide better venting. The simple harmonic vibrator, the exhaust 430 and the shaft check valve 440 may also be simultaneously opened. When P 1 ≤P 0 Closing shafts in sequence or simultaneouslyCheck valve 440, exhaust 430, and simple harmonic oscillator. Wherein DeltaP 1 The pressure value of the capillary filter device 450 at the end close to the water delivery tunnel 410 is subtracted from the pressure value of the capillary filter device 450 at the end far from the water delivery tunnel 410, and the pressure value is the actual measurement value.
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 rainwater collection system is characterized by comprising a water drop device and a water delivery device;
the drop device includes the drop pond and set up in drop well on the drop pond still includes: the water supply pipeline is communicated with the drop well; the ball float valve is arranged in the drop shaft and can open or close the water supply pipeline according to the liquid level change in the drop shaft; and a transverse channel, one end of which is communicated with the bottom of the drop tank, the other end is communicated with the bottom of the water delivery device, a transverse channel check valve is arranged in the transverse channel, when the water level reaches a preset warning water level, the transverse channel check valve is opened, so that the water in the water drop tank flows into the water delivery device;
the water delivery device comprises: the water delivery tunnel is communicated with the transverse channel and is used for delivering rainwater flowing in by the water drop device; the bottom of the ventilation vertical shaft is communicated with the water conveying tunnel, and an exhaust device and a vertical shaft check valve are arranged in the ventilation vertical shaft from top to bottom;
the water delivery device also comprises a capillary water filtering device, the capillary water filtering device is positioned at the joint of the ventilation vertical shaft and the water delivery tunnel, and the vertical shaft check valve is positioned between the capillary water filtering device and the exhaust device; the capillary tube in the capillary tube water filtering device is of a micron level;
under the action of the adhesion force of the capillary wall, the water vapor rising in the water delivery tunnel is absorbed on the capillary wall after entering the capillary to form a water film in the capillary; under the suction effect of the exhaust device, a hole is formed in the middle of the water film, and gas in the water delivery tunnel passes through the hole in the water film, flows through the shaft check valve and the exhaust device and is discharged from the ventilation shaft.
2. The rainwater collection system of claim 1, wherein the capillary filter device is provided with a water film pressure difference controller capable of monitoring a gas pressure difference Δp across the capillary filter device.
3. The rainwater collection system of claim 1, wherein the top of the ventilation shaft extends a distance above the ground, the top of the ventilation shaft is provided with a baffle, and the portion of the ventilation shaft extending above the ground is provided with a transverse vent.
4. A stormwater collection system as claimed in claim 1, wherein a water storage datum level in the drop shaft is provided, the water storage datum level being equal to the actual water level of the water delivery device.
5. The stormwater collection system of claim 1, wherein the float valve is controlled in linkage with the cross-channel check valve.
6. A method of venting a stormwater collection system as claimed in claim 1, comprising:
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 the horizontal channel check valve and the ball float valve are in a closed state;
when H is 3 ≥H 1 When the horizontal channel check valve is opened, rainwater flows into the water delivery device from the drop pool through the horizontal channelActual water level H in drop shaft 3 Down to H 3 ＜H 1 Closing the cross channel check valve when;
when H is 3 ＜H 2 The ball float valve controls the water supply pipeline to supply water to the drop tank, and the actual water level H in the drop shaft 3 Up to H 3 =H 2 And when the ball float valve is closed, the water supply pipeline stops supplying water.
7. The method for exhausting a rainwater collection system according to claim 1, wherein the capillary filter device is arranged next to the water delivery tunnel, a water film differential pressure controller is arranged on the capillary filter device, the capillary filter device comprises a simple harmonic vibrator, and the exhausting by the water delivery device is realized by the following steps:
s1, presetting a pressure difference delta P between two ends of the capillary water filtering device 0 And presetting a negative pressure value P relative to the 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727573.9A CN105256877B (en) | 2015-10-30 | 2015-10-30 | Drop device, rainwater collection system and exhaust method of rainwater collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727573.9A CN105256877B (en) | 2015-10-30 | 2015-10-30 | Drop device, rainwater collection system and exhaust method of rainwater collection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105256877A CN105256877A (en) | 2016-01-20 |
| CN105256877B true CN105256877B (en) | 2024-03-22 |
Family
ID=55096779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510727573.9A Active CN105256877B (en) | 2015-10-30 | 2015-10-30 | Drop device, rainwater collection system and exhaust method of rainwater collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105256877B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1111264A (en) * | 1979-12-07 | 1981-10-27 | Peter R.B. Ward | Downward vortex dissipator basin |
| SU1735514A1 (en) * | 1989-05-16 | 1992-05-23 | Нижегородский инженерно-строительный институт им.В.П.Чкалова | Canalization fall |
| JP2003253739A (en) * | 2002-03-01 | 2003-09-10 | Japan Institute Of Wastewater Engineering Technology | Exhaust structure and exhaust method in pipe line |
| EP1548193A3 (en) * | 2003-12-23 | 2006-06-07 | Axel Bohatsch | Device for preventing water entering a manhole shaft |
| CN103132493A (en) * | 2013-03-23 | 2013-06-05 | 安徽省水利水电勘测设计院 | Vertical shaft water-cushion type energy dissipater used in geology with weak resistance to impact in canyon |
| CN103455051A (en) * | 2013-08-23 | 2013-12-18 | 天津聚贤达科技有限公司 | Novel liquid level control device |
| 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 |
| CN203684178U (en) * | 2013-12-17 | 2014-07-02 | 浙江省电力设计院 | High water head and mass flow flood discharge and energy dissipation pool |
| CN204533945U (en) * | 2015-02-15 | 2015-08-05 | 广东雄塑科技集团股份有限公司 | A kind of drainage system denoising device |
| CN205348350U (en) * | 2015-10-30 | 2016-06-29 | 上海市政工程设计研究总院（集团）有限公司 | Drop device and rainwater collection system |
-
2015
- 2015-10-30 CN CN201510727573.9A patent/CN105256877B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1111264A (en) * | 1979-12-07 | 1981-10-27 | Peter R.B. Ward | Downward vortex dissipator basin |
| SU1735514A1 (en) * | 1989-05-16 | 1992-05-23 | Нижегородский инженерно-строительный институт им.В.П.Чкалова | Canalization fall |
| JP2003253739A (en) * | 2002-03-01 | 2003-09-10 | Japan Institute Of Wastewater Engineering Technology | Exhaust structure and exhaust method in pipe line |
| EP1548193A3 (en) * | 2003-12-23 | 2006-06-07 | Axel Bohatsch | Device for preventing water entering a manhole shaft |
| CN103132493A (en) * | 2013-03-23 | 2013-06-05 | 安徽省水利水电勘测设计院 | Vertical shaft water-cushion type energy dissipater used in geology with weak resistance to impact in canyon |
| CN103455051A (en) * | 2013-08-23 | 2013-12-18 | 天津聚贤达科技有限公司 | Novel liquid level control device |
| 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 |
| CN203684178U (en) * | 2013-12-17 | 2014-07-02 | 浙江省电力设计院 | High water head and mass flow flood discharge and energy dissipation pool |
| CN204533945U (en) * | 2015-02-15 | 2015-08-05 | 广东雄塑科技集团股份有限公司 | A kind of drainage system denoising device |
| CN205348350U (en) * | 2015-10-30 | 2016-06-29 | 上海市政工程设计研究总院（集团）有限公司 | Drop device and rainwater collection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105256877A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103669489B (en) | Roof tank water quality controller | |
| CN105256858B (en) | Water delivery device, rainwater collection system and exhaust method thereof | |
| JP5681738B2 (en) | Siphon drainage system | |
| CN206941708U (en) | A kind of fluid level control device for pumping plant cistern | |
| CN205348350U (en) | Drop device and rainwater collection system | |
| CN105256877B (en) | Drop device, rainwater collection system and exhaust method of rainwater collection system | |
| CN208777404U (en) | A kind of deodorizing closestool | |
| CN212187989U (en) | Sewage draining device | |
| CN205369515U (en) | Integration pump station with adjustable bottom hydraulic pressure | |
| CN205369372U (en) | Water delivery device and rainwater collection system | |
| CN209521848U (en) | A kind of complete hidden exhaust system of deeper vacuum sewage collecting peculiar to vessel | |
| CN206722059U (en) | A kind of monoblock type sewage lifter of anti-return | |
| JP3761092B1 (en) | Degassing device for liquid feed piping | |
| CN206874572U (en) | Vacant vacuum liquid pump | |
| CN201862331U (en) | Low-pressure jet pulse bag type dust catcher | |
| CN213039320U (en) | Goaf water drainage protection device | |
| CN210715226U (en) | Water pump protection device | |
| CN206189382U (en) | Special vacuum preloading unit of soft foundation treatment | |
| JP3154627U (en) | Gas separator | |
| CN206289708U (en) | A kind of underground multilayer drainage structure | |
| JP6139752B1 (en) | Drainage equipment | |
| CN212958736U (en) | Remote automatic water drainage device | |
| CN211113886U (en) | Automatic air supplement type air pressure tank | |
| CN207660675U (en) | A kind of urea box preventing filling overfill | |
| CN219639074U (en) | Self-priming pump device of rescue equipment and rescue equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |