Clean water tank

Abstract

The utility model relates to a clean water tank which comprises a clean water tank body, a clean water area, a disinfection area and a first overflow weir, the interior of the clean water tank body is divided into a clean water area and a disinfection area by the first overflow weir; wherein the water inlet system is arranged in the disinfection area, and the water outlet system is arranged in the clear water area; the cross section of the first overflow weir is 7-shaped, so that a disinfection area with a quadrangular cross section is defined by the first overflow weir and the clean water tank body. The clean water disinfection tank has the beneficial effects that the clean water disinfection tank integrates the effects of a clean water tank and a disinfection tank, has the advantages of saving land, reducing the construction cost, shortening the construction period and the like, and can correspond to standard requirements and meet various index requirements of standards.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal water supply, and particularly relates to a clear water tank. Background Art

[0002] With the continuous acceleration of urbanization, under the condition of controlling the red line of cultivated land, the urban land in large and medium-sized cities in China tends to be tense, and the area of land acquisition or reserved land for water treatment plants is often limited. Therefore, under the premise of meeting the requirements of water quality improvement, energy conservation and emission reduction, and safety and reliability, the intensive design of water treatment plants has become one of the urgent problems to be solved in many renovation and expansion projects;

[0003] As an indispensable unit of the water treatment plant, the clear water tank has the characteristics of large floor area, need for foundation treatment and foundation pit excavation, and large engineering quantity. Therefore, it is crucial to improve the land utilization rate without increasing the floor area. And integrating the single units of the water treatment plant has become a trend. Content of the Utility Model

[0004] Aiming at the technical problems existing in the prior art, the utility model provides a clear water tank, which can realize the integration of disinfection and clear water supply, save the floor area, reduce the project cost, and shorten the construction period.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: a clear water tank, including a clear water tank body, a clear water area, a disinfection area, and a first overflow weir;

[0006] The first overflow weir divides the inside of the clear water tank body into a clear water area and a disinfection area;

[0007] Wherein, the water inlet system is arranged in the disinfection area, and the water outlet system is arranged in the clear water area;

[0008] The cross-sectional structure of the first overflow weir is in the shape of "7", so as to enclose a disinfection area with a quadrilateral cross-section with the clear water tank body.

[0009] As a further technical solution, at least two flow guiding partition walls are arranged in the disinfection area along the water flow direction, so that the water in the disinfection area flows in a serpentine path.

[0010] As a further technical solution, the long side of the first overflow weir in the shape of "7" extends into the clear water area and has a gap with the corresponding inner wall of the clear water area. A second overflow weir is arranged in the clear water area in parallel at intervals with the long side of the first overflow weir in the shape of "7", so that the water passing through the disinfection area moves in a serpentine path in the clear water area to the water outlet system.

[0011] As a further technical solution, the water inlet system includes a water inlet pipe, a water inlet valve well, a water inlet pipe check valve, and a waterproof sleeve;

[0012] The water inlet pipe extends into the disinfection area after passing through the water inlet valve well. A waterproof sleeve is provided at the water inlet of the disinfection area, so that the water outlet end of the water inlet pipe extends into the disinfection area after passing through the waterproof sleeve.

[0013] A water inlet pipe maintenance valve is also provided on the water inlet pipe, and this water inlet pipe maintenance valve is located within the water inlet valve well.

[0014] As a further technical solution, the water outlet system includes a water outlet pipe sump, a water outlet pipe, a water outlet pipe maintenance valve, and a water outlet pipe valve well.

[0015] The water outlet pipe sump is located at the bottom of the water outlet area within the clear water area. The water inlet end of the water outlet pipe is located within the water outlet pipe sump, and the water outlet end of the water outlet pipe extends out of the clear water tank body and then passes through the water outlet pipe valve well to communicate with the outside.

[0016] Among them, a water outlet pipe maintenance valve is provided on the water outlet pipe, and this water outlet pipe maintenance valve is located within the water outlet pipe valve well.

[0017] As a further technical solution, a waterproof sleeve is provided on the water outlet pipe, and this waterproof sleeve is located between the water outlet pipe sump and the water outlet pipe valve well.

[0018] As a further technical solution, an overflow pipe funnel, an overflow pipe, an overflow pipe inspection well, and a flap gate are also provided within the clear water area.

[0019] The overflow pipe funnel and the long side of the first overflow weir of type 7 share the same horizontal center line and are spaced apart.

[0020] The water inlet end of the overflow pipe is communicated with the overflow pipe funnel, and the water outlet end extends out of the clear water tank body and then passes through the overflow pipe inspection well to communicate with the outside.

[0021] A flap gate is provided on the overflow pipe, and this flap gate is located within the overflow pipe inspection well.

[0022] As a further technical solution, a drain pipe sump, a drain pipe, a drain pipe valve well, a drain pipe valve, and a wet well are also provided within the clear water tank.

[0023] The drain pipe sump is located at the bottom of the water outlet area within the clear water area. The water inlet end of the drain pipe is communicated with the drain pipe sump, and the water outlet end extends out of the clear water tank body and then passes through the drain pipe valve well to communicate with the wet well.

[0024] A drain pipe valve is provided on the drain pipe, and this drain pipe valve is located within the drain pipe valve well.

[0025] As a further technical solution, a plurality of ventilation pipes are provided at intervals on the top of the clear water tank body.

[0026] As a further technical solution, at least one group of the disinfection area and the clear water area are provided in the clear water tank body, and one disinfection area corresponds to one clear water area.

[0027] The beneficial effects of the present utility model are as follows: It combines the functions of a clear water tank and a disinfection tank, has advantages such as saving land, reducing project cost, and shortening the construction period. At the same time, it can meet the corresponding specification requirements and all index requirements of the specifications; the whole structure is simple, the structural adjustment content is small compared with the traditional clear water tank structure, and the construction and implementation difficulty is small, which is suitable for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a plan view of the clear water tank of the present utility model;

[0029] Figure 2 is Figure 1 the schematic cross-sectional structure diagram of A-A in

[0030] Figure 3 is Figure 1 the schematic cross-sectional structure diagram of B-B in

[0031] Figure 4 is Figure 1 the schematic cross-sectional structure diagram of C-C in

[0032] Figure 5 is Figure 1 the detail drawing of the first overflow weir in

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] Clear water tank body 1, ventilation hole 1a; Clear water area 2, Disinfection area 3, First overflow weir 4, Partition member 5, Diversion partition wall 6, Drain gate 7, Second overflow weir 8, Water inlet pipe 9, Water inlet valve well 10, Water inlet pipe repair valve 11, Waterproof sleeve 12, Outlet pipe sump 13, Outlet pipe 14, Outlet pipe repair valve 15, Outlet pipe valve well 16, Overflow pipe funnel 17, Overflow pipe 18, Overflow pipe inspection well 19, Flap valve 20, Drain pipe sump 21, Drain pipe 22, Drain pipe valve well 23, Drain pipe valve 24, Wet well 25, Ventilation pipe 26. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0036] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0037] In the description of the present application, the term "for example" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "for example" in the present application is not necessarily construed as being more preferred or having more advantages than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid unnecessary details from obscuring the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope that conforms to the principles and features disclosed in the present application.

[0038] Currently, most water plants combine the clear water tank and the contact disinfection tank. However, according to Article 9.9.4 of the "Outdoor Water Supply Design Standard" GB50013-2018, for the clear water tank that also serves as the contact disinfection tank, the ratio of the total length of the internal corridor to the single width should be greater than 50. This also makes the combined structure complex, and to meet the requirement of the single width ratio, the land area and shape after combination are more restricted.

[0039] This embodiment aims to solve the defects in the prior art such as large floor area, high project cost, and long manufacturing cycle of the clear water tank, and proposes a clear water tank. See Figure 1 、 Figure 5, including: the clear water tank body 1, the clear water area 2, the disinfection area 3, and the first overflow weir 4; the first overflow weir 4 divides the inside of the clear water tank body 1 into the clear water area 2 and the disinfection area 3; among them, the water inlet system is arranged in the disinfection area 3, and the water outlet system is arranged in the clear water area 2; the cross-section of the first overflow weir 4 is constructed in a 7-shape to enclose a disinfection area 3 with a quadrilateral cross-section with the clear water tank body 1. Multiple groups of clear water areas 2 and disinfection areas 3 can be set in the clear water tank body 1 as needed. One clear water area 2 is provided with one disinfection area 3 in each group of areas, and adjacent areas are separated by a partition member 5. The partition member 5 is one of a partition board, a partition wall, etc.

[0040] The volume of the clear water tank can be determined according to 10% - 20% of the highest daily design water volume of the water plant when there is no regulating structure in the water supply network and in the case of lack of data in accordance with Article 7.6.4 of the "Outdoor Water Supply Design Standard" (GB 50013 - 2018). The actual effective volume W of the clear water tank 有效 ≥10%, and the volume review design of the clear water tank is carried out. The diameters of the inlet and outlet pipes 14 are reviewed according to the designed water supply flow rate of the water plant and the economic flow velocity range.

[0041] In the specific implementation process, refer to Figure 2 , at least two guiding partition walls 6 are arranged in the disinfection area 3 along its water flow direction, so that the water in the disinfection area 3 flows in a serpentine path, increasing the path of the water flow to extend the disinfection time of the water in the disinfection area 3, and at the same time preventing the short-circuit of the water in the clear water area 2 and avoiding the formation of stagnant water; more specifically, the guiding partition walls 6 are arranged on the walls on the opposite sides of the disinfection area 3 and are perpendicular to the corresponding walls. If the partition guiding wall is built to the top of the clear water tank body 1, ventilation holes 1a should be set on the wall within the freeboard range, and the exhaust of the clear water tank body 1 should be unobstructed.

[0042] Refer to Figure 1 , the long side of the 7-shaped first overflow weir 4 extends into the clear water area 2 and has a gap with the corresponding inner wall of the clear water area 2 to allow water flow through; preferably, a drain gate 7 is provided on the short side of the 7-shaped first overflow weir 4. Opening the drain gate 7 allows the water in the disinfection area 3 to quickly flow into the clear water area 2. The clear water area 2 is provided with a second overflow weir 8 arranged at intervals and parallel to the long side of the 7-shaped first overflow weir 4, so that the water passing through the disinfection area 3 moves in a serpentine path in the clear water area 2 to the water outlet system. Preferably, according to needs, the second overflow weir 8 can be set as multiple and arranged at intervals and parallel to each other.

[0043] In the specific implementation process, refer to Figure 1 , Figure 2, the water inlet system includes a water inlet pipe 9, a water inlet valve well 10, a water inlet pipe maintenance valve 11, and a waterproof sleeve 12; the water inlet pipe 9 passes through the water inlet valve well 10 and extends into the disinfection area 3, and the waterproof sleeve 12 is provided at the water inlet of the disinfection area 3, so that the water outlet end of the water inlet pipe 9 passes through the waterproof sleeve 12 and extends into the disinfection area 3 to transport water to the disinfection area 3; the water inlet pipe maintenance valve 11 is also provided on the water inlet pipe 9, and this water inlet pipe maintenance valve 11 is located in the water inlet valve well 10 for easy maintenance.

[0044] Correspondingly, referring to Figure 1 , Figure 3 , the water outlet system includes a water outlet pipe sump 13, a water outlet pipe 14, a water outlet pipe maintenance valve 15, and a water outlet pipe valve well 16; the water outlet pipe sump 13 is located at the bottom of the water outlet area in the clear water area 2, that is, the upper end surface of the water outlet pipe sump 13 is below the bottom end surface of the clear water area 2 and the two are connected, so that the clear water flows to the water outlet pipe sump 13 and is sent outside the clear water tank body 1 through the water outlet system; the water inlet end of the water outlet pipe 14 is located in the water outlet pipe sump 13, and the water outlet end of the water outlet pipe 14 extends out of the clear water tank body 1 and passes through the water outlet pipe valve well 16 to communicate with the outside; for convenient maintenance, the water outlet pipe maintenance valve 15 is provided on the water outlet pipe 14, and this water outlet pipe maintenance valve 15 is located in the water outlet pipe valve well 16. Further, a waterproof sleeve 12 is provided on the water outlet pipe 14, and this waterproof sleeve 12 is located between the water outlet pipe sump 13 and the water outlet pipe valve well 16.

[0045] In the specific implementation process, referring to Figure 1 , Figure 2 , an overflow pipe funnel 17, an overflow pipe 18, an overflow pipe inspection well 19, and a flap gate 20 are also provided in the clear water area 2; the opening of the overflow pipe funnel 17 faces the top wall of the clear water tank body 1; the overflow pipe funnel 17 and the long side of the first overflow weir 4 of type 7 share the same horizontal center line and are spaced apart; the water inlet end of the overflow pipe 18 is connected to the overflow pipe funnel 17, and the water outlet end extends out of the clear water tank body 1 and passes through the overflow pipe inspection well 19 to communicate with the outside; a flap gate 20 is provided on the overflow pipe 18, and this flap gate 20 is located in the overflow pipe inspection well 19.

[0046] In the specific implementation process, referring to Figure 1 , Figure 4, a drain pipe sump 21, a drain pipe 22, a drain pipe valve well 23, a drain pipe valve 24, and a wet well 25 are also provided in the clear water area 2; the drain pipe sump 21 is located at the bottom of the water outlet area in the clear water area 2, that is, the upper end surface of the drain pipe sump 21 is below the bottom end surface of the clear water area 2, and the two are connected, so that the clear water flows to the drain pipe sump 21 and then is sent outside the clear water tank body 1 through the water outlet system; the inlet end of the drain pipe 22 is connected to the bottom of the drain pipe sump 21, and the outlet end extends out of the clear water tank body 1 and then passes through the drain pipe valve well 23 and is connected to the wet well 25; for the convenience of maintenance, a drain pipe valve 24 is provided on the drain pipe 22, and the drain pipe valve 24 is located in the drain pipe valve well 23.

[0047] Preferably, the pipe diameter of the drain pipe 22 can be calculated according to draining the surplus water within 2 hours, but shall not be less than 100 mm.

[0048] In the specific implementation process, since the water level in the clear water tank is variable and located underground, for ventilation and exhaust, a plurality of ventilation pipes 26 arranged at intervals are provided at the top of the clear water tank body 1 to balance the air pressure in the clear water tank body 1.

[0049] The design parameters of each structure in the above embodiments are as follows:

[0050] (1) According to the "Design Manual of Water Supply and Drainage", the effective capacity W of the clear water tank is generally:

[0051] W = W1 + W2 + W3 + W4

[0052] In the formula, W is the regulation capacity, m3, W1 is generally obtained according to the water production curve and the water supply curve; W2 is the regulation water volume for flushing the water purification structure and other plant water uses; W3 is the safety storage capacity, m3. To avoid the clear water tank being emptied and threatening the water supply safety, a certain water depth capacity can be reserved in the clear water tank as the safety storage capacity; W4 is the fire storage capacity, m3.

[0053] The pipe diameter of the inlet pipe of the clear water tank is calculated according to the average time (i.e., the highest daily average time) under the design scale, and the pipe diameter of the outlet pipe is calculated according to the highest daily peak time of water supply.

[0054] (2) Inlet pipe diameter:

[0055]

[0056] Q - Average hourly water volume under the design scale of the water plant

[0057] V - Economic flow velocity

[0058] Take an integer after calculation.

[0059] (3) Outlet pipe diameter:

[0060]

[0061] Q - The maximum hourly water volume under the design scale of the water plant

[0062] V - Economic flow velocity

[0063] Round the calculated value to an integer.

[0064] (4) Overflow pipe

[0065] The diameter of the overflow pipe is generally the same as that of the inlet pipe.

[0066] 2. Contact disinfection tank

[0067] Generally, sodium hypochlorite contact disinfection is adopted. According to Article 9.9.9 of the "Design Standard for Outdoor Water Supply" (GB 50013 - 2018), "The effective contact time of chlorine disinfection shall not be less than 30 minutes", and it generally occupies a relatively small space volume. A diversion partition wall is provided in the contact disinfection tank to facilitate the full mixing of the disinfection agent and the clear water and ensure the disinfection effect.

[0068] 3. Overflow weir

[0069] The overflow weir of a single - cell water tank is calculated according to half of the maximum - hourly designed inlet flow rate. The calculation is based on the design regulations of the submerged rectangular weir in Section 16.3 of the "Design Manual for Water Supply and Drainage":

[0070]

[0071] δ=1.05×(1 + 0.2×h / p) 3 ×(Z / H) 0.5

[0072] In the formula: Q - The maximum - hourly designed inlet flow rate of the water plant

[0073] δ - Submergence coefficient

[0074] Z - Head drop (head difference before and after the weir) (m);

[0075] P - Weir wall height (m);

[0076] The height of the overflow weir is calculated by trial according to the above formula.

[0077] It should be noted that in the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic inventive concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0079] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A clean water tank, characterized in that: It comprises a clean water tank body (1), a clean water area (2), a disinfection area (3), and a first overflow weir (4); The first overflow weir (4) divides the clean water tank body (1) into a clean water area (2) and a disinfection area (3); Wherein, the water inlet system is arranged in the disinfection area (3), and the water outlet system is arranged in the clean water area (2); The cross-section of the first overflow weir (4) is configured in a 7-shape so as to enclose, together with the clean water tank body (1), a disinfection area (3) having a quadrilateral cross-section.

2. A clean water tank according to claim 1, characterized in that: At least two flow-guiding partition walls (6) are provided in the disinfection zone (3) along the water flow direction thereof, so that the water in the disinfection zone (3) flows in a serpentine path.

3. A clean water tank according to claim 1, characterized in that: The long side of the first overflow weir (4) of type 7 extends to the clean water area (2) and has a gap with the corresponding inner wall of the clean water area (2). The clean water area (2) is provided with a second overflow weir (8) arranged in parallel with the long side of the first overflow weir (4) of type 7, so that the water passing through the disinfection area (3) moves in a serpentine path in the clean water area (2) to the water outlet system.

4. A clean water tank according to claim 1, characterized in that: The water inlet system comprises a water inlet pipe (9), a water inlet valve well (10), a water inlet pipe inspection valve (11), and a waterproof casing (12); The water inlet pipe (9) passes through the water inlet valve well (10) and then extends into the disinfection zone (3); the water inlet of the disinfection zone (3) is provided with the waterproof sleeve (12), so that the water outlet end of the water inlet pipe (9) passes through the waterproof sleeve (12) and then extends into the disinfection zone (3); The water inlet pipe (9) is also provided with the water inlet pipe inspection valve (11), and the water inlet pipe inspection valve (11) is located in the water inlet valve well (10).

5. A clean water tank according to claim 4, characterized in that: The water outlet system comprises a water outlet pipe sump (13), a water outlet pipe (14), a water outlet pipe inspection valve (15), and a water outlet pipe valve well (16); The water outlet pipe sump (13) is located at the bottom of the water outlet area in the clean water zone (2); the water inlet end of the water outlet pipe (14) is located in the water outlet pipe sump (13); the water outlet end of the water outlet pipe (14) extends out of the clean water tank body (1) and passes through the water outlet pipe valve well (16) to communicate with the outside; Wherein, the outlet pipe (14) is provided with the outlet pipe inspection valve (15), and the outlet pipe inspection valve (15) is located in the outlet pipe valve well (16).

6. A clean water tank according to claim 5, characterized in that: The water outlet pipe (14) is provided with a waterproof sleeve (12), and the waterproof sleeve (12) is located between the water outlet pipe sump (13) and the water outlet pipe valve well (16).

7. A clean water tank according to claim 1, characterized in that: The clean water area (2) is also provided with an overflow pipe funnel (17), an overflow pipe (18), an overflow pipe inspection well (19), and a flap door (20); The overflow pipe funnel (17) and the long side of the first overflow weir (4) of type 7 share a common transverse centerline and are arranged at intervals; The water inlet end of the overflow pipe (18) is connected to the overflow pipe funnel (17), and the water outlet end extends out of the clean water tank body (1) and passes through the overflow pipe inspection well (19) to be connected to the outside; The overflow pipe (18) is provided with a flap door (20), and the flap door (20) is located in the overflow pipe inspection well (19).

8. A clean water tank according to claim 1, characterized in that: The clean water area (2) is also provided with a drainage pipe sump (21), a drainage pipe (22), a drainage pipe valve well (23), a drainage pipe valve (24), and a wet well (25); The drainage pipe sump (21) is located at the bottom of the water outlet area in the clean water area (2); the water inlet end of the drainage pipe (22) is connected to the drainage pipe sump (21); the water outlet end extends out of the clean water tank body (1) and passes through the drainage pipe valve well (23) to be connected to the wet well (25); The drain pipe (22) is provided with a drain pipe valve (24), and the drain pipe valve (24) is located in the drain pipe valve well (23).

9. A clean water tank according to claim 1, characterized in that: A plurality of ventilation pipes (26) arranged at intervals are provided on the top of the clear water tank body (1).

10. A clean water tank according to claim 1, characterized in that: At least one group of the disinfection area (3) and the clean water area (2) is arranged in the clean water pool body (1), and one disinfection area (3) corresponds to one clean water area (2).

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