A secondary pressurized underground pipe bundle water supply system

Abstract

The present application discloses a secondary pressurized underground pipe bundle water supply system, comprising a regulating and storing pipe A, on which a water inlet mechanism A and at least one pressurized water supply mechanism are installed, and at least one regulating and storing pipe B for regulating and expanding capacity is also included, wherein the regulating and storing pipe A is connected to any regulating and storing pipe B through a connecting pipe to form a communicating vessel structure, or the regulating and storing pipe A is connected to a plurality of mutually connected regulating and storing pipes B through a connecting pipe to form a communicating vessel structure; and a water inlet mechanism B is installed on any of the regulating and storing pipes B. The utility model adopts a single tank body for pressurization, and the solution of other tank bodies sharing regulation and storage can effectively integrate the water consumption of different water-using areas, share the regulation and storage water replenishment capacity of the entire system, and avoid the problem of idle or insufficient regulation and storage space existing in independent tank body regulation and storage.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply and drainage, in particular to the technical field of domestic water supply and secondary pressurized water supply, and specifically to a secondary pressurized underground pipe bundle water supply system. Background Art

[0002] Secondary water supply refers to the form in which units or individuals store and pressurize urban public water supply or self-built facilities water supply, and then supply it to users or for their own use through pipelines. Secondary water supply is mainly established to compensate for the lack of pressure in municipal water supply pipelines and to ensure water supply for people living in high-rise buildings. As the existing urban buildings are getting higher and higher, the tap water pressure provided by the water plant is far from enough to transport tap water to high floors. However, in this case, secondary water supply equipment is indispensable; since secondary water supply involves the daily water use of residents on high floors, its reliability is very important.

[0003] There are two main factors to consider for stable secondary water supply: one is whether the storage capacity of the secondary water supply can meet the peak water demand of the water-using area; the other is stable pressure supply. For the technical problem of constant secondary water supply pressure, please refer to the pressure water supply process and device of a booster water supply pump station system provided by publication number CN102102383A. The scheme adopted is to use a compensation tank for steady flow water storage, and the pressure tank for compensating pressure increase to ensure that when the booster pump stops working, the pressure at the outlet of the system will not drop sharply with the stop of the pump, and the pressure is compensated by the air pressure of the pressure tank. In real life, due to the densely populated characteristics of residents, the water supply demand in the water supply area is often very large. The use of a single compensation tank cannot meet the actual water supply demand. During the peak water use period, the problem of insufficient storage capacity is very likely to occur. If the problem is solved directly by increasing the size of the compensation tank, then the pressure and installation of the compensation tank will bring new problems; for this reason, the applicant provides a tube bundle storage technology that can effectively solve the pressure problem caused by the large size of the tank body. For details, see publication number CN114960842A. With the promotion of this technology, the applicant has found that when the installation site is severely limited but water supply is required to multiple areas, the bundle storage technology brings inconvenience to the installation of the system. For this reason, the applicant has proposed a corresponding matching method of one tank and one machine with the publication number CN115787787A. This method can effectively solve the problem of limited installation site and scattered supply areas. The combination of multiple tanks and multiple machines can effectively meet the needs of water supply in multiple areas. To date, the applicant has found that although the above solutions can solve the corresponding technical problems, they can hardly achieve perfect compatibility for different application scenarios. For this reason, the applicant's R&D team has comprehensively considered the installation site limitations, multi-area water supply, and large fluctuation range of water consumption in the water-using area of ​​the existing secondary water supply system, and has once again upgraded the technology and proposed a secondary booster underground pipe bundle water supply system to replace the existing booster water supply system. Utility Model Content

[0004] The present application provides a secondary pressurized underground pipe bundle water supply system, which is used to solve at least one of the following technical problems:

[0005] 1. Used to solve the problem of limited installation of large-sized water replenishment tanks / regulating pipes. In order to solve the problem of large fluctuations in water consumption in water-using areas, the existing technology solves it by increasing the size of the water replenishment tank to expand the regulating and storing capacity, but large-sized tanks will be limited by the installation site. This application adopts a combined adjustable shared regulating and storing capacity to solve the problem of limited installation of large tank regulating and storing tanks.

[0006] 2. Solve the problem that the one-tank-one-machine matching method cannot share the storage capacity for water supply in multiple areas. The use of a separate boosting device for water supply in multiple areas can achieve the stability of boosting, but the fluctuations in water consumption between different areas are not uniform. The one-tank-one-machine matching method cannot share the storage content between different tanks, which limits the storage efficiency of the entire system. This application uses a single tank for boosting, and the other tanks share the storage solution, which can effectively integrate the water consumption of different water-using areas and share the storage and replenishment capacity of the entire system.

[0007] In order to achieve the above purpose, the technical solution adopted in this application is:

[0008] A secondary pressurized buried pipe bundle water supply system comprises a regulating storage pipe A, on which a water inlet mechanism A and at least one pressurized water supply mechanism are installed, and at least one regulating storage pipe B for regulating and expanding capacity is also included, wherein the regulating storage pipe A is connected to any regulating storage pipe B through a connecting pipe to form a communicating vessel structure, or the regulating storage pipe A is connected to multiple mutually connected regulating storage pipes B through a connecting pipe to form a communicating vessel structure; any regulating storage pipe B is installed with a water inlet mechanism B.

[0009] Preferably, a drain pipe with a drain valve is provided at the bottom of the regulating storage pipe A or any regulating storage pipe B.

[0010] Preferably, the drainage pipe is installed in a drainage well located lower than the regulating storage pipe A and any regulating storage pipe B, and a submersible pump is installed in the drainage well for lifting the sewage discharged from the drainage pipe to the municipal pipeline.

[0011] Preferably, the water inlet mechanism A comprises a sealing cover plate detachably and tightly connected to the regulating and storing pipe A, a water inlet pipe fixedly arranged on the sealing cover plate, a liquid level sensor and a negative pressure suppressor.

[0012] Preferably, the negative pressure suppressor includes an outer shell fixedly connected to the sealing cover plate, the outer shell is provided with a vent hole for connecting the inner cavity of the regulating and storing tube A with the outside world, a sealing member for blocking / opening the vent hole by up / down movement, the sealing member is fixedly connected to a connecting rod, the lower end of the connecting rod is fixedly connected to a sealing member located at the upper end of the connecting rod for generating buoyancy by contact with water in the regulating and storing tube A to push the sealing member, and the outer shell is also fixedly connected to a limit member for limiting the movement trajectory of the connecting rod.

[0013] Preferably, it also includes at least one control cabinet for controlling pressurization and water inlet / outlet, and the outlet of any of the pressurized water supply mechanisms is connected to a water use monitoring unit, and the water use monitoring unit is provided with a pressure sensor electrically connected to the control cabinet, a pressure gauge B, a sterilizer and one or more of the water quality sensors.

[0014] Preferably, the control cabinet is also electrically connected to the drain valve and the submersible pump.

[0015] Preferably, it also includes at least one control cabinet for controlling pressurization and inlet / outlet water, and the control cabinet is also electrically connected to a water inlet control unit. The water inlet end of the water inlet control unit is connected to the municipal water supply network, and the water outlet end of the water inlet control unit is connected to the water inlet mechanism A and the water inlet mechanism B respectively through the shut-off valve B; the water inlet control unit includes one or more of a water intake valve, a pressure gauge A and a current limiting control valve.

[0016] Preferably, the booster water supply mechanism includes at least one down-suction silent pump installed in the cavity of the regulating and storing pipe A, and the down-suction silent pump is provided with a one-way valve A, a shut-off valve A and a water outlet branch pipe in sequence along the water outlet direction; an automatic drain valve and a pressure gauge are also provided on the top of the down-suction silent pump.

[0017] Preferably, water can be supplied to more than one water-using area at the same time, and any water-using area is connected to multiple booster water supply mechanisms at the same time. Any water supply mechanism includes at least one down-suction silent pump with an automatic drain valve, and a one-way valve A and a shut-off valve A are arranged in series between any of the water-using areas and any down-suction silent pump.

[0018] Beneficial effects:

[0019] The utility model adopts a single tank body for pressurization, and the other tank bodies share the storage and regulation scheme, which can effectively integrate the water consumption of different water-using areas, share the regulation and water replenishment capacity of the entire system, and avoid the problem of idle or insufficient regulation and storage space in independent tank body regulation and storage.

[0020] The utility model adopts a plurality of mutually connected regulating storage tanks, which can effectively solve the problem of installation environment limitation caused by the excessive size of the existing single large tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a simplified structural diagram of the regulating and storing pipe A of the utility model.

[0023] Figure 2 is along Figure 1 Section view with section symbol AA.

[0024] Figure 3 It is a water supply schematic diagram of the utility model.

[0025] Figure 4 It is a schematic diagram of water supply matching the multi-regulating storage pipe B of the utility model.

[0026] Figure 5 It is a schematic diagram of the structural principle of an embodiment of a negative pressure suppressor.

[0027] Figure 6 It is a schematic diagram of the radial connection structure between regulating storage tank A and regulating storage tank B.

[0028] Figure 7 This is a schematic diagram of the structure in which regulating storage tank A and regulating storage tank B are connected in series in sequence.

[0029] Figure 8 It is a cross-sectional schematic diagram of the regulating and storing pipe A in the installed state.

[0030] In the figure: 1-water inlet pipe; 2-negative pressure suppressor A; 3-water inlet elbow; 4-sealing cover; 5-automatic drain valve; 6-pressure gauge; 7-protective cover; 8-regulating and storing pipe A; 9-down suction silent pump; 10-liquid level sensor; 11-drain pipe; 12-connecting pipe; 13-water outlet branch pipe; 14-check valve A; 15-water intake valve; 16-pressure gauge A; 17-flow limiting control valve; 18-shut-off valve A ; 19-Shut-off valve B; 20-Drain valve; 21-Submersible pump; 22-Water quality sensor; 23-Disinfector; 24-Pressure gauge B; 25-Pressure sensor; 26-Air pressure tank; 27-Control cabinet A; 28-Control cabinet B; 29-Negative pressure suppressor B; 30-Regulating pipe B; 31-Outer shell; 32-Vent; 33-Sealing piece; 34-Limiting piece; 35-Connecting rod; 36-Buoyancy piece. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Embodiment 1:

[0038] This embodiment provides a secondary pressurized underground pipe bundle water supply system. Figure 1 , Figure 6 and Figure 7 As shown, it includes a regulating storage pipe A8, on which a water inlet mechanism A and at least one pressurized water supply mechanism are installed, and at least one regulating storage pipe B30 for regulating and expanding capacity is also included. The regulating storage pipe A8 is connected to any regulating storage pipe B30 through a connecting pipe 12 to form a communicating vessel structure, see Figure 6 As shown, the regulating and storing pipe A8 is directly connected to each regulating and storing pipe B30 through the connecting pipe 12; or the regulating and storing pipe A8 is connected to multiple mutually connected regulating and storing pipes B30 through the connecting pipe 12 to form a communicating vessel structure, see Figure 7As shown, the regulating and storing pipe A8 is connected to one of the regulating and storing pipes B30 through the connecting pipe 12, and the other regulating and storing pipes B30 that increase the regulating and storing volume are connected to the nearest adjacent regulating and storing pipes B30 through the connecting pipe 12, and any of the regulating and storing pipes B30 is installed with a water inlet mechanism B. The regulating and storing pipes B30 can be connected in series or in parallel, or in a combination of series and parallel. In practical application, the appropriate one can be flexibly selected according to the actual installation site, and the length of the pipeline can be reduced. The selection of the above two different connection methods is mainly based on the actual installation site and environment. Flexible selection is made to achieve the purpose of adapting to different installation environments and reducing the construction of connecting pipelines. It is worth noting that the length of the connecting pipe 12 is not limited. As the regulating and storing pipe B30 for regulating and expanding capacity, its actual installation position can be arranged close to the regulating and storing pipe A. Under the premise that the actual installation environment and site do not meet the dense layout, the regulating and storing pipe B30 can also be arranged away from the regulating and storing pipe A8. Since the regulating and storing pipe A8 and the regulating and storing pipe B30 are basically at the same depth and form a communicating vessel structure, the actual regulating and storing function will not be affected regardless of the length of the communicating pipe 12.

[0039] Taking the water supply of a single water supply area with a large flow rate as an example, the difference between this embodiment and the prior art is explained by comparison:

[0040] Assuming that the water consumption in the water supply area requires a storage volume of 15 cubic meters to meet daily water consumption, then for the most commonly used single tank storage, a storage pipe with an effective storage volume of 15 cubic meters is required, which is set according to a diameter of 1.5 meters. According to the standard columnar design, the length needs to be about 12.73 meters, but the bottom of the large-sized, high-pressure tank must be designed according to a spherical or quasi-spherical surface to better withstand the pressure, so the actual length of the tank should reach 14.5 meters. This has very high requirements for the installation site, and at least a foundation pit with a length of 16 meters, a width of 2.5 meters and a depth of 2.5 meters needs to be constructed. This has high requirements for the construction site, and at the same time, the manufacturing, transportation, and pressure-bearing capacity requirements of the storage tank are greatly increased, which indirectly increases the cost of tank manufacturing, transportation and installation. The storage pipe A8 and the storage pipe B30 of this embodiment adopt a radial or series type to meet the storage volume of 15 cubic meters. Three tanks can be used as follows Figure 6 or Figure 7The connection can be made by using a 5-cubic-meter regulating and storage pipe A8 and two regulating and storage pipes B30. In this way, the regulating and storage capacity is fully satisfied, and the length of a single tank can be set according to a diameter of 1.5 meters, and the length is about 5 meters, which greatly reduces the difficulty of manufacturing and transportation. At the same time, scattered construction can be carried out, and the original large construction pit is changed into multiple small pits in different positions for installation, which greatly reduces the difficulty of construction, and the actual regulation and storage effect will not be reduced at all. During the actual water supply, the water from the municipal pipeline network is supplied to the water-using area after secondary pressurization through the regulating and storage pipe A8. Since the regulating and storage pipe A8 and the regulating and storage pipe B30 are interconnected, and each regulating and storage pipe B30 is equipped with a water inlet mechanism B, the water level in the regulating and storage pipe A8 will always be consistent with the water level in the regulating and storage pipe B30, sharing the 15-cubic-meter regulating and storage capacity. If the existing one-tank-one-machine method is adopted, that is, a separate boosting mechanism is installed in a separate regulating and storing pipe, the regulating and storing space between multiple boosting mechanisms and multiple regulating and storing pipes is independent and cannot be shared, so that the actual regulating and storing capacity of the same total regulating and storing capacity will be greatly reduced. Furthermore, the present embodiment has the ability to continue to expand. When the water consumption in the water-using area increases, the actual occupancy rate of users entering the water supply area increases greatly, or the water consumption fluctuation range of the water-using area exceeds the capacity that the original water supply system can bear due to expansion and other reasons, the present embodiment can expand the regulating and storing capacity by adding a regulating and storing pipe B30, so as to achieve the actual problem of regulating and storing capacity expansion to meet the actual increase in water consumption without modifying the original water supply system; while the existing single-tank regulating and storing cannot be expanded and does not have the ability of convenient modification, which may cause the problem of insufficient peak water supply after the water consumption in the water-using area increases. Furthermore, all the boosting water supply mechanisms are installed in the regulating and storing pipe A8, which is conducive to the centralized maintenance, inspection and daily management of the boosting water supply equipment, which is more realistic than the scattered method of one tank and one machine.

[0041] Embodiment 2:

[0042] This embodiment is further optimized on the basis of the embodiment 1. In order to improve the convenience of the discharge of the cleaned sewage in the secondary booster water supply system which needs to be cleaned regularly, a drain pipe 11 with a drain valve 20 is provided at the bottom of the regulating and storing pipe A8 or any regulating and storing pipe B30 described in this embodiment. The drain valve 20 is in a normally closed state. It is opened only after the regulating and storing pipe A8 and the regulating and storing pipe B30 are cleaned to discharge the sewage generated after cleaning. The drain valve 20 can be provided on the regulating and storing pipe A8 and each regulating and storing pipe B30, or it can be provided only on the regulating and storing pipe A8, and not on the regulating and storing pipe B30. Different settings will only affect the efficiency of discharging sewage, and will not affect the realization of the cleaning function.

[0043] In this embodiment, the drainage pipe 11 is installed in a drainage well located lower than the regulating and storing pipe A8 and any regulating and storing pipe B30, and a submersible pump 21 is installed in the drainage well to lift the sewage discharged from the drainage pipe 11 to the municipal pipeline. Figure 3 and Figure 8 As shown, the drainage pipe 11 discharges sewage into the drainage well, and the submersible pump 21 pumps the sewage to the ground and discharges it through the municipal drainage pipeline. Figure 3 The figure shows the case where there is only one drain valve 20 in a drainage well. If the water consumption in the water supply area is large and a larger storage volume is required, more storage pipes B30 will be required. Therefore, multiple drain valves 20 will all drain water into the drainage well. For details, see Figure 4 As shown, it includes a drain valve 20b connected to the regulating storage pipe A8 and a drain valve 20a and a drain valve 20c connected to different regulating storage pipes B30. The discharged sewage is discharged through a submersible pump 21 installed in the drainage well.

[0044] Embodiment 3:

[0045] In this embodiment, in order to increase the convenience of system control and reduce manual opening / closing operations, this embodiment further includes at least one control cabinet for controlling pressurization and water inlet / outlet on the basis of any of the above embodiments. The outlet of any of the pressurized water supply mechanisms is connected to a water use monitoring unit, and the water use monitoring unit is provided with one or more of a pressure tank 26, a pressure sensor 25, a pressure gauge B24, a sterilizer 23 and a water quality sensor 22 electrically connected to the control cabinet. The function of the pressure tank 26 is that when the pressurized water supply mechanism stops pressurizing, the compressed air in the pressure tank 26 can continuously ensure the pressure output of the water use end, and the pressure at the water use end will not drop suddenly due to the shutdown of the pressurized water supply mechanism, thus avoiding the problem that the pressure supply at the water use end disappears instantly after the pressurized water supply mechanism is shut down because water is not compressible. The pressure sensor 25 is used to collect whether the water pressure at the water end is normal, and is used for real-time monitoring to grasp the state of pressurized water supply; the pressure gauge B24 is used to display and collect pressure, and can also be used to verify the water supply pressure after pressurization at the water outlet; the disinfector 23 can generally use an ultraviolet disinfection device, which can adapt to the function of running water sterilization and disinfection. The water quality sensor 22 is mainly used to grasp the water quality. Once the water quality is abnormal and does not meet the drinking water quality requirements, it is necessary to stop the water supply in time for tracing and checking, and timely discover the water supply source problem and eliminate it in time. In this embodiment, the control cabinet is also electrically connected to the drain valve 20 and the submersible pump 21.

[0046] In this embodiment, at least one control cabinet for controlling pressurization and inlet / outlet water is also included. The control cabinet is also electrically connected to a water inlet control unit. The water inlet end of the water inlet control unit is connected to the municipal water supply network, and the water outlet end of the water inlet control unit is connected to the water inlet mechanism A and the water inlet mechanism B respectively through the shut-off valve B19. They adopt the same structural arrangement, and a negative pressure suppressor B29 is installed on the water inlet mechanism B; the water inlet control unit includes one or more of a water intake valve 15, a pressure gauge A16 and a current limiting control valve 17.

[0047] In order to facilitate the distinction between monitoring and control, two water supply areas are used as an example. Different water supply areas can be controlled separately by two control cabinets. Figure 3 and Figure 4 As shown in the figure, control cabinet A27 is used to control the booster water supply equipment and water use monitoring unit of the pipe network in zone 2, and control cabinet B28 is used to control the pipe network in zone 1 and the water inlet control unit from the municipal water supply network; of course, if the system supplies water to more than two water supply areas, a third control cabinet can be added separately to control and detect the pipe network in zone 3, and so on. Figure 3 Here, J0 represents the water inlet pipeline, J1 represents the water outlet pipeline of zone 1, and J2 represents the water outlet pipeline of zone 2.

[0048] Embodiment 4:

[0049] This embodiment is further optimized based on any of the above embodiments. Figure 1-Figure 8 As shown, the booster water supply mechanism includes at least one down-suction silent pump 9 installed in the cavity of the regulating and storing pipe A8, and the down-suction silent pump 9 is provided with a one-way valve A14, a shut-off valve A18 and a water outlet branch pipe 13 in sequence along the water outlet direction; an automatic drain valve 5 and a pressure gauge 6 are also provided on the top of the down-suction silent pump 9.

[0050] In this embodiment, water can be supplied to more than one water-using area at the same time. Any water-using area is connected to multiple booster water supply mechanisms at the same time. Any water supply mechanism includes at least one down-suction silent pump 9 with an automatic drain valve 5. A one-way valve A14 and a shut-off valve A18 are arranged in series between any of the water-using areas and any down-suction silent pump 9.

[0051] In this embodiment, the water inlet mechanism A includes a sealing cover plate 4 that is detachably and tightly connected to the regulating and storing pipe A8, a water inlet pipe 1 that is fixedly arranged on the sealing cover plate 4, the water inlet pipe 1 can be guided and connected through the water inlet elbow 3 according to the water inlet direction, a liquid level sensor 10 and a negative pressure suppressor 2, and a protective cover 7 for achieving physical protection and shielding. The protective cover 7 can be arranged on the water inlet mechanism or on the booster water supply mechanism located outside the regulating and storing pipe to realize the physical protection structure of the detection device and the control device. For details, see Figure 1 shown.

[0052] In this embodiment, the negative pressure suppressor 2 includes an outer shell 31 fixedly connected to the sealing cover plate 4, and a vent 32 for connecting the inner cavity of the regulating and storing pipe A8 with the outside is provided in the outer shell 31, and a blocking member 33 for blocking / opening the vent 32 by up / down movement, and the blocking member 33 is fixedly connected to a connecting rod 35, and the lower end of the connecting rod 35 is fixedly connected to the blocking member 33 located at the upper end of the connecting rod 35 for generating buoyancy by contacting with water in the regulating and storing pipe A8 to push the blocking member 33 located at the upper end of the connecting rod 35, and the outer shell 31 is also fixedly connected to a limiter 34 for limiting the moving trajectory of the connecting rod 35.

[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A secondary pressurized underground pipe bundle water supply system, comprising a regulating and storing pipe A (8), on which a water inlet mechanism A and at least one pressurized water supply mechanism are installed, characterized in that: The invention also comprises at least one regulating storage pipe B (30) for regulating storage and expanding capacity; the regulating storage pipe A (8) is connected to any regulating storage pipe B (30) through a connecting pipe (12) to form a communicating vessel structure; or the regulating storage pipe A (8) is connected to a plurality of mutually communicating regulating storage pipes B (30) through a connecting pipe (12) to form a communicating vessel structure; and a water inlet mechanism B is installed on any regulating storage pipe B (30).

2. The secondary pressurized underground pipe bundle water supply system according to claim 1, characterized in that: A drainage pipe (11) with a drainage valve (20) is arranged at the bottom of the regulating and storing pipe A (8) or any regulating and storing pipe B (30).

3. A secondary pressurized underground pipe bundle water supply system according to claim 2, characterized in that: The drainage pipe (11) is installed in a drainage well located lower than the regulating and storing pipe A (8) and any regulating and storing pipe B (30), and a submersible pump (21) is installed in the drainage well for lifting sewage discharged from the drainage pipe (11) to a municipal pipeline.

4. A secondary pressurized underground pipe bundle water supply system according to any one of claims 1 to 3, characterized in that: The water inlet mechanism A comprises a sealing cover plate (4) detachably and hermetically connected to the regulating and storing pipe A (8), a water inlet pipe (1) fixedly arranged on the sealing cover plate (4), a liquid level sensor (10) and a negative pressure suppressor (2).

5. The secondary pressurized underground pipe bundle water supply system according to claim 4, characterized in that: The negative pressure suppressor (2) comprises an outer shell (31) fixedly connected to the sealing cover plate (4); a vent hole (32) for connecting the inner cavity of the regulating and storing pipe A (8) with the outside is arranged in the outer shell (31); a blocking member (33) for blocking / opening the vent hole (32) by moving up / down; the blocking member (33) is fixedly connected to a connecting rod (35); the lower end of the connecting rod (35) is fixedly connected to a blocking member (33) for generating buoyancy by contacting with water in the regulating and storing pipe A (8) to push the blocking member (33) located at the upper end of the connecting rod (35); and the outer shell (31) is also fixedly connected to a limiting member (34) for limiting the moving trajectory of the connecting rod (35).

6. A secondary pressurized underground pipe bundle water supply system according to any one of claims 1 to 3, characterized in that: It also includes at least one control cabinet for controlling pressurization and water inlet / outlet. The outlet of any of the pressurized water supply mechanisms is connected to a water use monitoring unit. The water use monitoring unit is provided with a pressure sensor (25) electrically connected to the control cabinet, a pressure gauge B (24), a sterilizer (23) and one or more of a water quality sensor (22).

7. A secondary pressurized underground pipe bundle water supply system according to claim 6, characterized in that: The control cabinet is also electrically connected to the drain valve (20) and the submersible pump (21).

8. A secondary pressurized underground pipe bundle water supply system according to any one of claims 1 to 3, characterized in that: It also includes at least one control cabinet for controlling pressurization and inlet / outlet water, and the control cabinet is also electrically connected to a water inlet control unit. The water inlet end of the water inlet control unit is connected to the municipal water supply network, and the water outlet end of the water inlet control unit is connected to the water inlet mechanism A and the water inlet mechanism B respectively through a shut-off valve B (19); the water inlet control unit includes one or more of a water intake valve (15), a pressure gauge A (16) and a flow limiting control valve (17).

9. The secondary pressurized underground pipe bundle water supply system according to claim 1, characterized in that: The pressurized water supply mechanism comprises at least one down-suction silent pump (9) installed in the cavity of the regulating and storing pipe A (8), wherein the down-suction silent pump (9) is provided with a one-way valve A (14), a shut-off valve A (18) and a water outlet branch pipe (13) in sequence along the water outlet direction; and an automatic drain valve (5) is also provided at the top of the down-suction silent pump (9).

10. The secondary pressurized underground pipe bundle water supply system according to claim 1, characterized in that: It is capable of supplying water to more than one water-using area at the same time, and any water-using area is connected to a plurality of booster water supply mechanisms at the same time. Any water supply mechanism comprises at least one down-suction silent pump (9) with an automatic drain valve (5). A one-way valve A (14) and a shut-off valve A (18) are arranged in series between any of the water-using areas and any down-suction silent pump (9).

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