A device for simulating rainwater retention and infiltration effect

Abstract

The present invention discloses a rainwater retention and infiltration effect simulation device, comprising: a collection barrel and at least one simulation component, the collection barrel having a closed collection chamber; the simulation component comprising a water pump and a barrel, the inlet of the water pump being connected to the collection chamber, the barrel having a closed chamber, the chamber being connected to the outlet of the water pump, a liquid inlet flow meter being provided on the communication channel between the chamber and the outlet of the water pump, a water outlet being provided at the lower end of the barrel connected to the chamber, and a liquid outlet flow meter being provided at the outlet. The technical solution proposed by the present invention has the beneficial effect of: by loading different kinds of fillers into the chamber and artificially simulating the actual rainfall process in the chamber, the retention and infiltration effects of different fillers can be analyzed, thereby guiding the sponge city construction work in the study area.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater retention and infiltration, in particular to a rainwater retention and infiltration effect simulation device. Background Art

[0002] The rapid development of urbanization in China has brought many problems. In order to cope with this situation, combined with international advanced experience, my country's urban construction has introduced the concept of sponge city. Among them, the soil utilization of rainfall is the core.

[0003] Due to differences in rainfall, rainfall duration, temperature, etc., different cities have different fillers suitable for sponge city construction. How to screen out fillers suitable for the study area has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of this, it is necessary to provide a device that can test the rainwater retention and infiltration effects of different fillers, so as to guide the construction of sponge cities in the study area.

[0005] A rainwater retention and infiltration effect simulation device comprises: a collection bucket and at least one simulation component.

[0006] The collection barrel has a closed collection chamber;

[0007] The simulation component includes a water pump and a barrel, the inlet of the water pump is connected to the collecting chamber, the barrel has a closed chamber, the chamber is connected to the outlet of the water pump, a liquid inlet flow meter is provided on the connecting channel between the chamber and the outlet of the water pump, a water outlet connected to the chamber is opened at the lower end of the barrel, and a liquid outlet flow meter is provided at the water outlet.

[0008] Compared with the prior art, the beneficial effect of the technical solution proposed in the present invention is: by loading different types of fillers into the material cavity and artificially simulating the actual rainfall process in the material cavity, the retention and infiltration effects of different fillers can be analyzed, thereby guiding the sponge city construction work in the study area. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of an embodiment of a rainwater retention and infiltration effect simulation device provided by the present invention;

[0010] Figure 2 yes Figure 1 Schematic diagram of the structure of the simulation components;

[0011] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle tube cover;

[0012] Figure 4 yes Figure 3A partial enlarged view of the middle area A;

[0013] In the figure: 1-collecting barrel, 2-simulation component, 3-water supply mechanism, 4-permeability body, 11-first heater, 12-first refrigerator, 13-first thermometer, 14-detection port, 15-detection valve, 21-water pump, 22-barrel, 221-water outlet, 222-overflow port, 223-second heater, 224-second refrigerator, 225-second thermometer, 226-barrel cover, 2261-water inlet, 2262-water spray port, 23-liquid inlet flowmeter, 24-liquid outlet flowmeter, 25-overflow flowmeter, 31-water supply barrel, 311-third heater, 312-third refrigerator, 313-third thermometer, 32-water supply pump, 33-water supply valve, 41-gravel layer, 42-filling layer, 43-soil layer, 44-covering layer. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] Please refer to Figure 1 The present invention provides a rainwater retention and infiltration effect simulation device, including a collection barrel 1 and at least one simulation component 2. In this embodiment, the number of the simulation components 2 is four.

[0016] Please refer to Figure 1 and Figure 2 The collection barrel 1 has a sealed collection chamber. In this embodiment, in order to increase the heat preservation performance of the collection barrel 1, the main structure of the collection barrel 1 is made of double-layer glass. The simulation component 2 includes a water pump 21 and a barrel 22. The inlet of the water pump 21 is connected to the collection chamber. The barrel 22 has a sealed chamber, which is connected to the outlet of the water pump 21. A liquid inlet flowmeter 23 is provided on the communication channel between the chamber and the outlet of the water pump 21. The lower end of the barrel 22 is provided with a water outlet 221 connected to the chamber. A liquid outlet flowmeter 24 is provided at the water outlet 221. The liquid outlet flowmeter 24 is used to detect the flow of water flowing out of the water outlet 221. In this embodiment, there are four barrels 22. The height of the four barrels 22 is 100 cm and the outer diameter is 40 cm. In order to increase the heat preservation performance of the barrel 22, the main structures of the four barrels 22 are all made of double-layer glass.

[0017] When the rainwater retention and infiltration effect simulation device provided by the present invention is in use, the collected rainwater is loaded into the collection barrel 1, different fillers are respectively loaded into the four collection barrels 1, and the four water pumps 21 are turned on. The rainwater in the collection barrel 1 enters the four collection barrels 1 and flows out from the four water outlets 221 respectively. The amount of rainwater V1 entering the corresponding barrel 22 is measured by the liquid inlet flowmeter 23, and the amount of rainwater V2 flowing out from the water outlet 221 is measured by the liquid outlet flowmeter 24. Then, the amount of retained rainwater V3 in the barrel = V1-V2. The sizes of the retained rainwater amounts V3 of the four barrels 22 are compared, so as to select the filler with the strongest rainwater retention capacity, thereby guiding the sponge city construction work in the study area.

[0018] Preferably, please refer to Figure 1 and Figure 2 A first heater 11, a first refrigerator 12 and a first thermometer 13 are provided in the collecting chamber, wherein the first heater 11 is used to heat the water in the collecting chamber, the first refrigerator 12 is used to cool the water in the collecting chamber, and the first thermometer 13 is used to detect the temperature of the water in the collecting chamber. By using the first heater 11, the first refrigerator 12 and the first thermometer 13 in coordination, the water in the collecting chamber is kept at a set temperature; a second heater 223, a second refrigerator 224 and a second thermometer 225 are provided in the material chamber, wherein the second heater 223 is used to heat the water in the material chamber, the second refrigerator 224 is used to cool the water in the material chamber, and the second thermometer 225 is used to detect the temperature of the water in the material chamber. By using the second heater 223, the second refrigerator 224 and the second thermometer 225 in coordination, the water in the material chamber is kept at a set temperature.

[0019] For further information, please refer to Figure 1 The rainwater retention and infiltration effect simulation device also includes a water supply mechanism 3, which includes a water supply barrel 31 and a water supply pump 32. The water supply barrel 31 has a closed water supply cavity. In this embodiment, in order to increase the heat preservation performance of the water supply barrel 31, the main structure of the water supply barrel 31 is made of double-layer glass; the inlet of the water supply pump 32 is connected to the water supply cavity, and the outlet of the water supply pump 32 is connected to the collection cavity. A water supply valve 33 is provided on the communication channel between the inlet of the water supply pump 32 and the water supply cavity. When in use, the water supply barrel 31 is filled with rainwater. When the water in the collection barrel 1 is insufficient, the water supply pump 32 is turned on to pump the rainwater in the water supply barrel 31 into the collection barrel 1, thereby ensuring that the experiment continues.

[0020] Preferably, please refer to Figure 1The water supply cavity is provided with a third heater 311, a third refrigerator 312 and a third thermometer 313. The third heater 311 is used to heat the water in the water supply cavity, the third refrigerator 312 is used to cool the water in the water supply cavity, and the third thermometer 313 is used to detect the temperature of the water in the water supply cavity. The third heater 311, the third refrigerator 312 and the third thermometer 313 are used in coordination to keep the water in the water supply cavity at a set temperature.

[0021] Preferably, please refer to Figure 1 and Figure 2 The upper end of the barrel 22 is also provided with an overflow port 222 connected to the material cavity, and an overflow flowmeter 25 is provided at the overflow port 222. When in use, when the height of the water in the barrel 22 exceeds the height of the overflow port 222, the excess rainwater will flow out from the overflow port 222, thereby preventing the rainwater from flowing back. The amount of rainwater V4 flowing out of the overflow port 222 is measured by the overflow flowmeter 25, so that the amount of retained rainwater V3 in the barrel 22 = V1-V2-V4.

[0022] Preferably, please refer to Figure 1 and Figure 2 The collecting barrel 1 is also provided with a detection port 14 connected with the collecting chamber, and a detection valve 15 is provided on the detection port 14, so that part of the rainwater in the collecting barrel 1 can be taken out from the detection port 14 by opening the detection valve 15, and the taken out rainwater is chemically analyzed to calculate its COD, total nitrogen content and total phosphorus content, etc.

[0023] For further information, please refer to Figure 2 The material cavity is filled with a permeable body 4, and the permeable body 4 includes a gravel layer 41, a filler layer 42, a soil layer 43 and a covering layer 44. The gravel layer 41 is laid on the inner bottom wall of the barrel 22, the filler layer 42 is laid on the gravel layer 41, the soil layer 43 is laid on the filler layer 42, and the covering layer 44 is laid on the soil layer 43.

[0024] Preferably, please refer to Figure 2 The thickness of the gravel layer 41 is 15 cm, the thickness of the filler layer 42 is 40 cm, the thickness of the soil layer 43 is 30 cm, and the thickness of the cover layer 44 is 15 cm. The filler layer 42 is the core layer. The filler layers 42 in the four barrels 22 are planting soil, activated carbon, fly ash and zeolite, respectively, so that the rainwater retention and infiltration effects of these four fillers can be tested by this device.

[0025] Preferably, please refer to Figure 3 and Figure 4The barrel 22 includes a barrel cover 226, and the barrel cover 226 is used to cover the upper end surface of the barrel 22. The barrel cover 226 has a closed cover cavity. A water inlet 2261 connected to the cover cavity is opened on the upper end surface of the barrel cover 226. The water inlet 2261 is connected to the outlet of the water pump 21. A plurality of water spray outlets 2262 connected to the cover cavity are opened on the lower end surface of the barrel cover 226. In this embodiment, the water spray outlets 2262 are evenly distributed on the lower end surface of the barrel cover 226, so that rainwater can fall into the material cavity evenly, better simulating the actual rainfall process.

[0026] In order to better understand the present invention, Figure 1-Figure 4 The working process of the rainwater retention and infiltration effect simulation device provided by the present invention is described in detail:

[0027] Step 1: Preparation before the experiment

[0028] (1) Collect meteorological data of the study area (including rainfall, precipitation duration, and temperature in each season);

[0029] (2) Collect rainwater from different areas of the study area and analyze its COD, total nitrogen content, and total phosphorus content;

[0030] Step 2: Experimental process

[0031] (1) The collected rainwater is put into the collection barrel 1, and different fillers are respectively put into the four barrels 22;

[0032] (2) Control the temperature of the system so that the temperature of each part is equal to the average temperature of the study area during the flood season;

[0033] (3) Turn on the four water pumps 21 and adjust the displacement of the water pumps 21 to match the rainfall in the study area. The rainwater in the collection barrel 1 enters the four collection barrels 1 and flows out from the four outlets 221 respectively. The amount of rainwater V1 entering the corresponding barrel 22 is measured by the inlet flowmeter 23, the amount of rainwater V2 flowing out from the outlet 221 is measured by the outlet flowmeter 24, and the amount of rainwater V4 flowing out from the overflow port 222 is measured by the overflow flowmeter 25. Thus, the amount of rainwater retained in the barrel V3 = V1-V2-V4;

[0034] (4) Analyze the COD, total nitrogen content, and total phosphorus content of the rainwater flowing out of the outlet 221;

[0035] (5) Comparing the magnitude of the retained rainwater volume V3 of the four barrels 22, thereby selecting the filler with the strongest rainwater retention capacity, and comparing the water purification effects of each filler;

[0036] (6) Replace the rainwater from different areas and repeat the above steps. Comprehensively select the fillers with more retained water and better purified water quality. These fillers are suitable for the construction of sponge cities in the study area.

[0037] In summary, the present invention loads different types of fillers into the material cavity and artificially simulates the actual rainfall process in the material cavity to analyze the retention and infiltration effects of different fillers, thereby guiding the sponge city construction work in the study area.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0039] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rainwater retention and infiltration effect simulation device, characterized in that: include: a collection bucket and at least one simulation component, The collection barrel has a closed collection chamber; The simulation component includes a water pump and a barrel, the inlet of the water pump is connected to the collection chamber, the barrel has a closed chamber, the chamber is connected to the outlet of the water pump, a liquid inlet flow meter is provided on the communication channel between the chamber and the outlet of the water pump, a water outlet connected to the chamber is provided at the lower end of the barrel, and a liquid outlet flow meter is provided at the water outlet; A first heater, a first refrigerator and a first thermometer are provided in the collection chamber, wherein the first heater is used to heat the water in the collection chamber, the first refrigerator is used to cool the water in the collection chamber, and the first thermometer is used to detect the temperature of the water in the collection chamber; A second heater, a second refrigerator and a second thermometer are provided in the material cavity, wherein the second heater is used to heat the water in the material cavity, the second refrigerator is used to cool the water in the material cavity, and the second thermometer is used to detect the temperature of the water in the material cavity; The rainwater retention and infiltration effect simulation device also includes a water supply mechanism, which includes a water supply bucket and a water supply pump. The water supply barrel has a sealed water supply cavity; The inlet of the water supply pump is communicated with the water supply chamber, the outlet of the water supply pump is communicated with the collecting chamber, and a water supply valve is provided on the communication passage between the inlet of the water supply pump and the water supply chamber; a third heater, a third refrigerator and a third thermometer are provided in the water supply chamber, the third heater is used to heat the water in the water supply chamber, the third refrigerator is used to cool the water in the water supply chamber, and the third thermometer is used to detect the temperature of the water in the water supply chamber; When in use, the collected rainwater is put into the collection barrel, and different fillers are respectively put into four collection barrels, and four water pumps are turned on. The rainwater in the collection barrel enters the four collection barrels and flows out from four outlets respectively. The amount of rainwater V1 entering the corresponding barrel is measured by the liquid inlet flow meter, and the amount of rainwater V2 flowing out from the outlet is measured by the liquid outlet flow meter. Then the amount of retained rainwater V3 in the barrel = V1-V2. The retained rainwater V3 of the four barrels is compared to select the filler with the strongest rainwater retention capacity.

2. The rainwater retention and infiltration effect simulation device according to claim 1, characterized in that: The upper end of the barrel is also provided with an overflow port connected with the material cavity, and an overflow flowmeter is provided at the overflow port.

3. The rainwater retention and infiltration effect simulation device according to claim 1, characterized in that: The collecting barrel is also provided with a detection port which is in communication with the collecting chamber, and the detection port is provided with a detection valve.

4. The rainwater retention and infiltration effect simulation device according to claim 1, characterized in that: The material cavity is filled with a permeable body, which includes a gravel layer, a filler layer, a soil layer and a covering layer. The gravel layer is laid on the inner bottom wall of the barrel, the filler layer is laid on the gravel layer, the soil layer is laid on the filler layer, and the covering layer is laid on the soil layer.

5. The rainwater retention and infiltration effect simulation device according to claim 4, characterized in that: The thickness of the gravel layer is 15 cm, the thickness of the filler layer is 40 cm, the thickness of the soil layer is 30 cm, and the thickness of the covering layer is 15 cm.

6. The rainwater retention and infiltration effect simulation device according to claim 1, characterized in that: The barrel includes a barrel cover, which is used to cover the upper end surface of the barrel. The barrel cover has a closed cover cavity. A water inlet connected to the cover cavity is opened on the upper end surface of the barrel cover, and the water inlet is connected to the outlet of the water pump. A plurality of water spray outlets connected to the cover cavity are opened on the lower end surface of the barrel cover.

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