Bottom layer water delivery line and multi-level water supply system

Abstract

The utility model provides a bottom water delivery line and a multi-level water supply system, which comprise a water delivery pipeline, a plurality of water intake wells, a water storage well and a water storage pond, water in a water source enters the water intake wells through the water delivery pipeline, and the water in the water intake wells is delivered to a water using area; the water storage well is communicated with the water taking well and the water storage pond. The bottom water delivery line can be designed into various shapes, scattered small water plants can be integrated and transformed, and urban water supply safety and reasonable allocation of water resources can be improved. The water storage well is arranged in the device, so that a buffering effect can be achieved in daily water quantity fluctuation. On the premise that the water quality is guaranteed, the water storage well can receive water from different water sources, such as purified rainwater and underground water, and the effect of adjusting the water quality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply systems, in particular to a bottom water transmission line and a multi-level water supply system. Background Art

[0002] The urban water supply system consists of water sources, water treatment plants, water pipe networks and ancillary facilities. It produces and transports water for urban life and production, and is highly related to the development and construction of the city. Ensuring water supply safety, improving water supply quality and reducing water supply losses are important goals of the urban water supply system.

[0003] Due to the long construction period and the mismatch between planning and actual urban development, urban water pipeline networks present problems such as disordered topological structure, high operating pressure, long water age, high leakage rate and water hammer. The construction of urban agglomerations requires the rational allocation of production factors and the change of municipal water supply management mode: on the one hand, the water supply system is required to improve its operating efficiency, and on the other hand, the internal hierarchical division of the water supply system is also required. Building an efficient, energy-saving and safe water supply system has become an urgent need for the healthy development of cities.

[0004] The unreasonable structure of the urban water supply network leads to excessive local water supply pressure, which directly leads to frequent accidents such as water hammer and pipe burst. The topological structure of the pipe network can be roughly divided into tree and ring. The former has low construction cost but poor safety, and the damage of the pipe section directly affects the water use of the subsequent nodes; the latter has high construction cost but relatively high safety. The large cities in my country with early urban construction are a combination of tree and ring networks. However, with the expansion of the scale of the pipe network, the overly complex structure of the ring pipe network in actual operation leads to problems such as long water age and unbalanced water pressure in some areas, which offsets the safety brought by the ring topological structure. In addition to the pressure problem caused by the pipe network structure, the pressure problem caused by the large area of ​​the urban pipe network and the single water supply source is unavoidable. It can be foreseen that to meet the head requirements of the most unfavorable point far away from the water source, it will inevitably lead to excessive water pressure at the node relatively close to the water source, which in fact causes energy waste and increases the operation risk of the pipe network.

[0005] DBS zoning technology is an important way to transform the existing water supply network. Its implementation measures are to close valves in certain areas, clarify the water supply and distribution functions of pipelines, and install detectors to improve management levels. The application of DBS zoning can significantly improve the operating pressure, water age, water quality and other indicators caused by the simplification of the pipeline network, but its application in large cities has the following problems: 1. The pressure in the water supply network still gradually increases from the most unfavorable point, and the residual pressure in the area close to the water plant is higher; 2. It tends to reduce the ring structure in the pipeline network, which weakens the safety regulation ability of the pipeline network. Therefore, it is necessary to design a bottom water supply line and a multi-level water supply system. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a bottom water supply line and a multi-level water supply system to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides a bottom water supply line, which is applied to multi-layer and water supply systems; it includes a water supply pipeline, a plurality of water intake wells, a water storage well, and a water storage tank. Water in a water source enters the water intake well through the water supply pipeline, and the water in the water intake well is transported to the water use area; the water storage well is connected with the water intake well, and the water storage well is connected with the water storage tank.

[0008] Preferably, a lifting pump may be provided inside the water well, and the lifting pump is used to pressurize the water in the water well.

[0009] Preferably, the water storage well is provided with an overflow port for overflowing from the water intake well into the water storage well; and the water storage well is provided with a water discharge port for replenishing water from the water storage well into the water intake well.

[0010] Preferably, it also includes a groundwater well, which is connected to the water intake well and serves as a regulating reservoir for the bottom water transmission line.

[0011] Preferably, a plurality of water intake wells are arranged linearly in the water delivery pipeline.

[0012] Preferably, a plurality of water intake wells are arranged in a tree shape in the water delivery pipeline.

[0013] Preferably, a plurality of water intake wells are arranged in a ring shape in the water delivery pipeline.

[0014] Preferably, a plurality of water intake wells are arranged in the water pipeline in any two of the three shapes, namely, linear shape, tree shape, and ring shape, or a combination of the three.

[0015] To achieve the above purpose or other purposes, the utility model also discloses a multi-level water supply system, including the above-mentioned bottom water supply line, and also includes a surface water distribution network and a middle water supply network. The water in the water intake well is transported to the surface water distribution network through the middle water supply network, and the surface water distribution network transports the water to the water use area.

[0016] Preferably, an air valve is provided at the connection between the middle-layer water supply network and the surface water distribution network to avoid water hammer; a flow meter is also provided in the middle-layer water supply network to manage water leakage.

[0017] As described above, the bottom water supply line and multi-level water supply system involved in the utility model have the following beneficial effects:

[0018] The utility model relates to a bottom-layer water supply line and a multi-level water supply system. The bottom-layer water supply line can be designed into a variety of shapes, and the scattered small water plants can be integrated and transformed, which can improve the safety of urban water supply and the rational allocation of water resources. The utility model is provided with a water storage well, which can play a buffering role in daily water volume fluctuations. Under the premise of ensuring water quality, the water storage well can also receive water from different water sources, such as purified rainwater and groundwater, to play a role in water quality regulation. The middle-layer water supply network in the utility model is used to connect the water intake well and the surface water distribution network, which can reduce head loss. An air valve is provided in the middle-layer water supply network to avoid the occurrence of water hammer. A flow meter is provided in the middle-layer water supply network to strengthen the management of water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the bottom layer water supply line in the utility model being linear;

[0020] Figure 2 It is a schematic diagram of the bottom layer water supply line in the utility model being in a tree shape;

[0021] Figure 3 It is a schematic diagram of the bottom layer water supply line in the utility model being annular;

[0022] Figure 4 It is a schematic diagram of the bottom layer water delivery line in the utility model being a mixed type;

[0023] Figure 5 It is a connection diagram of the multi-level water supply system in the utility model;

[0024] Figure 6 It is a connection diagram of the surface water distribution network in the prior art of the utility model;

[0025] Figure 7 This is a connection diagram of a certain embodiment of the multi-level water supply system in the utility model;

[0026] Figure 8 It is a spatial schematic diagram of the multi-level water supply system in the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a water intake well in a multi-level water supply system in the utility model;

[0028] Description of reference numerals:

[0029] 1. 1# water plant; 2. 2# water plant; 3. Surface water distribution network; 31. Class I first-level water distribution zone; 32. Class II first-level water distribution zone; 321. Class II second-level water distribution zone; 322. Class II third-level valve; 33. Class III first-level water distribution zone; 331. Class III second-level water distribution zone; 34. Class IV first-level water distribution zone; 341. Class IV second-level water distribution zone; 342. Class IV third-level valve; 4. Middle-level water transmission network; 41. Middle-level water transmission network in zone I; 42. Middle-level water transmission network in zone II; 43. Middle-level water transmission network in zone III; 44. Middle-level water transmission network in zone IV; 5 1. Water intake point of zone 1; 52. Water intake point of zone 2; 53. Water intake point of zone 3; 54. Water intake point of zone 4; 6. Water intake well; 61. Lifting pump; 62. Water column; 63. First-level valve; 7. Water pipeline; 71. First bottom-layer connecting pipe; 72. Second bottom-layer connecting pipe; 8. Water storage well; 81. Water storage tank; 9. Groundwater well; 10. Connecting pipe; 1001. First water treatment plant; 1002. Second water treatment plant; 1003. Third water treatment plant; 2001. First water pipe; 2002. Second water pipe; 2003. Third water pipe. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0032] like Figure 1-Figure 5 As shown, the utility model provides a bottom water supply line, which is used in multi-layer and water supply systems; it includes a water supply pipeline 7, a plurality of water intake wells 6, a water storage well 8, and a water storage tank 81. Water in a water source enters the water intake well 6 through the water supply pipeline 7, and the water in the water intake well 6 is transported to the water use area; the water storage well 8 is connected to the water intake well 6, and the water storage well 8 is connected to the water storage tank 81.

[0033] The bottom water supply line involved in the utility model is provided with a plurality of water intake wells 6 and a plurality of water storage wells 8. The water intake wells 6 and the water storage wells 8 are connected. The water storage wells 8 can be used to reduce water pressure fluctuations and replenish water to the water intake wells 6 at any time to ensure stable water pressure for users.

[0034] Preferably, Fig. 9 As shown, a booster pump 61 may be further provided inside the water well 6, and the booster pump 61 is used to pressurize the water in the water well 6. When the water well 6 is located in a low area with a low water head, the water pressure needs to be increased by the booster pump 61 to ensure the water pressure.

[0035] Preferably, in the present embodiment, the water storage well 8 is provided with an overflow port for overflowing the water intake well 6 into the water storage well 8 ; the water storage well 8 is provided with a water discharge port for replenishing water from the water storage well 8 into the water intake well 6 .

[0036] Preferably, Figure 8 As shown, it also includes a groundwater well 9, which is connected to the water intake well 6 and serves as a regulating reservoir for the bottom water transmission line.

[0037] Preferably, Figure 1 As shown, several water intake wells 6 are arranged in a linear shape in the water supply pipeline 7. The linear shape connects the water intake wells 6 in a linear manner. In this layout, the number of water intake wells 6 is small and no loop is formed. This mode is suitable for areas with small urban scale and simple industrial layout, or as a regional or phased form of large-scale urban water supply loop construction, leaving space for later loop construction.

[0038] Preferably, Figure 2 As shown, several water wells 6 are arranged in a tree shape in the water delivery pipeline 7. Several water wells 6 are distributed in a tree shape, starting from the nodes on the main pipeline and extending to both sides. There are many nodes in the network, and the derivative range can be expanded according to demand. The service range can be expanded by building new branches according to demand, and does not constitute a loop structure. The tree layout is suitable for regional and phased projects in medium-sized cities or large cities.

[0039] Preferably, Figure 3 As shown, several water wells 6 are arranged in a ring shape in the water supply pipeline 7. Each water well 6 is connected by a single line to form a ring structure. In this ring layout structure, all water wells 6 are on a ring line. When a problem occurs in a certain section of the ring line, the water wells 6 on the accident section can be guaranteed to be supplied with water by other sections, which is safer. When the water intake in each water well 6 changes, other water wells 6 will be affected to a certain extent, and the degree of influence is affected by factors such as the diameter and length of the ring line. Since the bottom water supply line of the ring line adopts pressure flow to supply water, the water hammer problem in the long-distance water supply process cannot be ignored, so the distance between the two water wells 6 should not be too large.

[0040] Preferably, Figure 4 As shown, a plurality of water intake wells 6 are arranged in the water delivery pipeline 7 in any two of the three shapes, such as linear, tree-shaped, and circular, or a combination of the three, which can better adapt to urban conditions.

[0041] To achieve the above purpose or other purposes, the utility model also discloses a multi-level water supply system, including the above-mentioned bottom water supply line, and also includes a surface water distribution network 3 and a middle water supply network 4. The water in the water well 6 is transported to the surface water distribution network 3 through the middle water supply network 4, and the surface water distribution network 3 transports the water to the water use area.

[0042] Preferably, an air valve is provided at the connection between the middle-layer water supply network 4 and the surface water distribution network 3 to avoid water hammer; a flow meter is also provided in the middle-layer water supply network 4 to manage water leakage.

[0043] Furthermore, in this embodiment, the surface water distribution network 3 includes a primary water distribution zone and a secondary water distribution zone. The primary water distribution zone is the entire area covered by a single water intake well 6; the secondary water distribution zone is the area in the primary water distribution zone that is directly connected to the middle-layer water transmission network 4.

[0044] In order to better describe the technical solution in the utility model, an embodiment is now provided for detailed description:

[0045] like Figure 6 As shown in the figure, this is a schematic diagram of the water supply network before the transformation. The water source is directly transported to the water intake point of the surface water distribution network 3 through three water treatment plants and several water pipes. The water intake point is Figure 6 The intersection of the surface water distribution network 3 line. The three water treatment plants are the first water treatment plant 1001, the second water treatment plant 1002, and the third water treatment plant 1003. The first water treatment plant 1001 transports water to the surface water distribution network 3 line through the first water pipe 2001; the second water treatment plant 1002 transports water to the surface water distribution network 3 line through the second water pipe 2002; the third water treatment plant 1003 transports water to the surface water distribution network 3 line through the third water pipe 2003.

[0046] like Figure 6-Figure 9 As shown, the transformation steps are as follows:

[0047] 1. Divide the surface water distribution network 3 into different zones; based on factors such as natural geography and administrative divisions, the original large-scale surface water distribution network 3 is divided into different zones to form multiple primary and secondary water distribution zones with relatively small correlations. The ring structure that is conducive to eliminating positive water hammer is appropriately retained in the area;

[0048] A2: Calculate the shortest path; use the weighted shortest path as the distance between nodes, and use the K-means clustering method to find the center point of each primary water distribution area, and use the center point of each primary water distribution area as the location of the water intake well 6. The center point of each secondary water distribution area is used as the water intake point, and the water intake well 6 and the water intake point are connected through the middle-layer water transmission pipeline network 4. When the primary water distribution area is not divided into a secondary water distribution area, a water intake point can also be set at an appropriate location.

[0049] A3: Determine the key water intake points; determine the key water intake points based on the calculation results of the shortest path in step A2; retain the middle-layer water pipe network 4 between adjacent key water intake points. Make a decision on the removal of the middle-layer water pipe network 4 based on the connection relationship between the key water intake points and the middle-layer water pipe network 4, combined with administrative planning, underground space utilization and economic factors, and remove those middle-layer water pipe networks 4 that are not on the shortest path, while ensuring the connectivity and stability of the surface water distribution pipe network 3.

[0050] A4: Simulation test and optimization: optimize the surface water distribution network 3 according to step A3, and simulate the accident conditions by considering factors such as flow rate, pressure, residual chlorine, etc. of the pipe section.

[0051] A5: Constructing the bottom water transmission line; determining the bottom water transmission line based on geological data and the location of the water well 6; constructing the bottom water transmission line by pipe jacking, shield tunneling and other construction methods for pressure-bearing gravity flow water transmission, and constructing the water well 6 by caisson construction at the planned location of the water well 6; connecting several water wells 6 through the bottom water transmission line, and the bottom water transmission line is also connected to the water source;

[0052] A6: Establish a plurality of water storage wells 8 in the surface water distribution network 3, and the plurality of water storage wells 8 are connected to the plurality of water intake wells 6 via connecting pipes 10;

[0053] A7: When the water head in a certain area of ​​the surface water distribution network 3 is low, a booster pump 61 is provided in the water intake well 6 covering the area to increase the water pressure.

[0054] A8: construct a middle-layer water transmission network 4; with the water intake well 6 as the center, the water intake well 6 is connected with the water intake point through the middle-layer water transmission network 4; the design path of the middle-layer water transmission network 4 is radial or annular;

[0055] A9: An air valve is provided at the connection point between the middle layer water supply network 4 and the surface layer water distribution network 3 to avoid water hammer;

[0056] A10: A flow meter is installed in the middle-level water supply network 4 to manage water leakage.

[0057] A11: Simulation testing and optimization.

[0058] In step A2, the service population of the first-level water distribution zone is between tens of thousands and hundreds of thousands, and the water consumption in the first-level water distribution zone directly affects the diameter of the relevant pipelines, route design, and the location and scale of the water intake well 6. If the area of ​​the first-level water distribution zone is too large, the diameter of the water delivery pipeline 7 will increase, the pipe section between the water intake wells 6 will be too long, and the pressure imbalance in the region will be obvious; if the area of ​​the first-level water distribution zone is too small, the diameter of the water delivery pipeline 7 will decrease, the number of water intake wells 6 will be too large, and the daily water consumption in a single area will vary greatly. In general, considering the water use scale of general cities, the implementation of projects and daily operation management, it is usually more economical and effective to use administrative functional areas as one of the division criteria, that is, to divide an administrative functional area into a first-level water distribution zone. In addition, natural conditions such as rivers and slopes can also be used as important considerations for dividing the first-level water distribution zone. In the planning of the first-level water distribution zone, the control of the two indicators of residual chlorine and water age should also be considered. The location and water supply of the water treatment plant should take into account the future optimization of the plant area.

[0059] The service population of the secondary water distribution zone is between 10,000 and 100,000 people, and the daily variation coefficient of water use in the area should be controlled below 1.6. In general, for residential water use, the jurisdiction of a city street office is usually used as a secondary water distribution zone; for industrial water use, an industrial park is usually used as a secondary water distribution zone. The division of the secondary water distribution zone should be combined with the surface water distribution network 3 to set the access point of the middle-layer water transmission network 4 at an appropriate location, so as to determine the number of access points, and try to ensure that there are two access points of the middle-layer water transmission network 4 in a secondary water distribution zone to ensure water supply safety. In the case that there is only one access point in the secondary water distribution zone, a connecting pipe should be set between the adjacent secondary water distribution zones to provide emergency water supply in the event of an accident. At the same time, in order to prevent the deterioration of water quality, the valve connecting the two access points should be opened regularly to release water. In order to take into account the changes in water demand in the region when the main industry type remains unchanged, the water volume between the secondary water distribution zones within the same primary water distribution zone is coordinated through the water storage well 8.

[0060] In step A8, when the middle-layer water pipe network 4 is designed to be radial, the radial middle-layer water pipe network 4 is characterized by extending a number of independent water pipes from the water intake well 6, and each branch main pipe and branch pipe are distinct, forming a tree-like shape. That is, the surface water distribution network 3 directly connected to the main pipe only receives water from one main pipe. The radial middle-layer water pipe network 4 is suitable for areas where the surface water distribution network 3 is distributed in a mass shape, and the surface water distribution network 3 between the masses is ring-shaped and the classification is unclear. In this case, the main function of the middle-layer water pipe network 4 is to provide sufficient water for different masses, and the surface water distribution network 3 provides a certain redundancy with its ring structure to ensure the safety of internal water use.

[0061] When the middle-layer water pipe network 4 is designed to be annular, the annular middle-layer water pipe network 4 is characterized by a plurality of interconnected water pipes extending from the water intake well 6, and the surface water distribution pipe network 3 directly connected to the main pipe may receive water from multiple main pipes. The annular main pipe is suitable for the situation where the surface water distribution pipe network 3 has a high degree of zoning and there are fewer annular structures inside the zoning. In this case, the main function of the middle-layer water pipe network 4 is not only to provide sufficient water for different masses, but also to ensure the safety of water supply in the water supply zoning.

[0062] In this embodiment, the schematic diagram of the modified water supply network is as follows: Figure 6-Figure 9 As shown, there are four primary water distribution zones, namely, a first-class primary water distribution zone 31, a second-class primary water distribution zone 32, a third-class primary water distribution zone 33, and a fourth-class primary water distribution zone 34; a water intake well 6 is set at the center of each of the four primary water distribution zones, for a total of four water intake wells 6. The four water intake wells 6 are connected through the bottom water transmission line.

[0063] Among them: the first-level water distribution zone 31 of category I is not divided into the second-level water distribution zone; the second-level water distribution zone 32 is divided into four second-level water distribution zones 321 of category II; the third-level water distribution zone 33 is divided into two third-level water distribution zones 331; the fourth-level water distribution zone 34 is divided into four fourth-level water distribution zones 341.

[0064] There are four zone 1 water intake points 51 in the first-class water distribution zone 31. There are four zone 2 water intake points 52 in the second-class water distribution zone 32. There are two zone 3 water intake points 53 in the third-class water distribution zone 33. There are two zone 4 water intake points 54 in the fourth-class water distribution zone 34.

[0065] Among them: the water intake well 6 in the first-level water distribution zone 31 of the first category and the four water intake points 51 in the first zone are connected through the middle-layer water transmission network 41 in the first zone. The water intake well 6 in the second-level water distribution zone 32 and the four water intake points 52 in the second zone are connected through the middle-layer water transmission network 42 in the second zone. The water intake well 6 in the third-level water distribution zone 33 and the two water intake points 53 in the third zone are connected through the middle-layer water transmission network 43 in the third zone. The water intake well 6 in the fourth-level water distribution zone 34 and the two water intake points 54 in the fourth zone are connected through the middle-layer water transmission network 44 in the fourth zone.

[0066] Among them: there are two water sources, namely 1# Water Plant 1 and 2# Water Plant 2. 1# Water Plant 1 is connected to the water intake well 6 in the first-level water distribution area 31 of the first category through the first bottom connecting pipe 71, and 2# Water Plant 2 is connected to the water intake well 6 in the second-level water distribution area 32 through the second bottom connecting pipe 72.

[0067] Among them: a water storage well 8 and a water storage tank 81 are set in the four-category first-level water distribution area 34. The water intake points in the four-category second-level water distribution areas 321 are interconnected, so that when a water intake point fails, the adjacent water intake points can provide emergency water supply. At the same time, a second-category third-level valve 322 is set on the pipeline between the adjacent water intake points. The water intake points in two fourth-category second-level water distribution areas 341 are connected, so that when a water intake point fails, another water intake point can provide emergency water supply. A fourth-category third-level valve 342 is set on the pipeline between the two water intake points.

[0068] Among them, Figure 2 As shown, the position of the Class IV primary water distribution partition 34 is relatively low, and the water head is low; a Class IV primary valve 63 is arranged on the bottom water delivery line in the water intake well 6 of the Class IV primary water distribution partition 34, and when the Class IV primary valve 63 is opened, the water flows to form a water column 62. In order to ensure the water pressure in the water intake well 6, a lifting pump 61 is also arranged in the water intake well 6.

[0069] The utility model relates to a multi-level water supply system, in which the function of the bottom water transmission line is to integrate the water resources of various regions, that is, to connect the water plant and each water distribution zone with relatively low loss, and its characteristics are deep buried pipes, large pipe diameters, connection in a ring and slow flow rate. The existence of scattered small water plants in the water supply system makes the system unstable and has high unit costs. The integration and transformation of some water plants has positive significance for improving urban water supply safety and the rational allocation of water resources. The function of the middle-level water transmission network 4 is to connect the water intake well 6 with the water supply zone, and to transport the required water volume to the surface water distribution network 3 with appropriate water pressure to reduce head loss. The surface water distribution network 3 is used to transport water to the user's water use area.

[0070] The utility model relates to a bottom water transmission line and a multi-level water supply system. The bottom water transmission line is arranged in a ring shape, and the scattered small water plants can be integrated and transformed, which can improve the safety of urban water supply and the rational allocation of water resources. A water storage well 8 is provided, which can buffer the daily water volume fluctuations of the water transmission network. Under the premise of ensuring the water quality, the water storage well 8 can also receive water from different water sources, such as purified rainwater and groundwater, to play a role in water quality regulation. A middle-layer water transmission network 4 is provided, which is used to connect the water intake well 6 and the surface water distribution network 3, and can reduce the head loss.

[0071] In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A bottom water supply line, used in multi-layer and water supply systems; characterized by: The invention comprises a water supply pipeline (7), a plurality of water intake wells (6), a water storage well (8), and a water storage tank (81); water from a water source enters the water intake well (6) through the water supply pipeline (7); the water in the water intake well (6) is transported to a water use area; the water storage well (8) is connected to the water intake well (6), and the water storage well (8) is connected to the water storage tank (81).

2. The bottom water supply line according to claim 1, characterized in that: A lifting pump (61) may also be provided inside the water intake well (6), and the lifting pump (61) is used to pressurize the water in the water intake well (6).

3. The bottom water supply line according to claim 1 is characterized in that: The water storage well (8) is provided with an overflow port for overflowing the water intake well (6) into the water storage well (8); and the water storage well (8) is provided with a water discharge port for replenishing water from the water storage well (8) into the water intake well (6).

4. The bottom water supply line according to claim 1, characterized in that: It also includes a groundwater well (9), which is connected to the water intake well (6) and serves as a regulating reservoir for the bottom water transmission line.

5. The bottom water supply line according to claim 1, characterized in that: A plurality of water intake wells (6) are arranged linearly in a water delivery pipeline (7).

6. The bottom water supply line according to claim 1, characterized in that: A plurality of water intake wells (6) are arranged in a tree shape in a water delivery pipeline (7).

7. The bottom water supply line according to claim 1 is characterized in that: A plurality of water intake wells (6) are arranged in a ring shape in a water delivery pipeline (7).

8. The bottom water supply line according to claim 1, characterized in that: A plurality of water intake wells (6) are arranged in a water delivery pipeline (7) in any two of the three shapes, namely, linear shape, tree shape, and ring shape, or a combination of the three.

9. A multi-level water supply system, comprising the bottom water supply line according to any one of claims 1 to 8, characterized in that: It also includes a surface water distribution network (3) and a middle-layer water delivery network (4), wherein water in the water intake well (6) is transported to the surface water distribution network (3) through the middle-layer water delivery network (4), and the surface water distribution network (3) transports the water to the water-using area.

10. The multi-level water supply system according to claim 9, characterized in that: An air valve is provided at the connection between the middle-layer water supply pipe network (4) and the surface-layer water distribution pipe network (3) to avoid water hammer; a flow meter is also provided in the middle-layer water supply pipe network (4) to manage water leakage.

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