CN113789837A - Reservoir and pump house system of secondary pressurization water supply and fire control - Google Patents

Abstract

A kind of reservoir and pump house system supplying water and fire control of secondary pressurization, including reservoir and pump house, reservoir and pump house locate under terrace outside the small compartment, reservoir and pump house have common side wall, bottom plate, roof, reservoir and pump house separate by the dividing wall, pump house contain with reservoir communicating secondary pressurization water pump and fire pump, near dividing wall in the bottom plate in the pump house have sump pit, bottom valve in the sump pit communicates with dredge pump through the water inlet elbow, form the steel bar concrete structure poured integrally, serve as the foundation of the high-rise building body at the same time; the invention has scientific and reasonable design, improves the space utilization rate of the water storage pool of the basement from 60 percent to 100 percent, greatly increases the water storage capacity, saves the investment, occupies little outdoor green space, is an innovation on secondary pressurized water supply, and has remarkable social and economic benefits.

Description

Reservoir and pump house system of secondary pressurization water supply and fire control

Technical Field

The invention relates to a building structure and a process design of a water storage pool and a pump house for secondary water supply and fire fighting in cities, which enable the water storage pool and the pump house to become an integral reinforced concrete structure and also serve as an underground foundation of a high-rise building body, in particular to a water storage pool and a pump house system for secondary pressurized water supply and fire fighting.

Background

1. The working pressure of urban water supply networks usually only guarantees direct water supply for 5-6 stories of buildings. Buildings with more than 6-7 floors all use secondary pressurized water supply systems. This is because the operating pressure of a municipal water supply network, if too high, is not safely and economically feasible.

2. The water inlet pipe of the water pump for secondary pressurized water supply is absolutely not allowed to be directly connected with the urban water supply pipeline. This is because the direct connection causes a large reduction in the local operating pressure of the municipal water supply network, which prevents many consumers from using water properly.

3. The user of the secondary pressurized water supply must first build a self-used water storage pool, so that the water of the urban water supply pipeline flows into the self-used water storage pool, and a water pump for the secondary pressurized water supply draws water from the water storage pool and sends the water to the high-rise building after pressurization. Generally, the interior of a high-rise building is pressurized once every 4 floors, and the water inlet pipe of the pressurizing pump can draw water from the pipeline at the lower floor, so that the water pump can be operated in series, and a buffer water storage tank does not need to be built every 4 floors. The water storage tank can relieve the water supply difficulty of the community when the urban water supply network is overhauled or in an accident, and the volume of the water storage tank is as large as possible.

4. The secondary pressurized water storage tank in the initial stage is mostly a simple brick water tank built outdoors or a small-capacity reinforced concrete water tank built under the indoor ground, is only used for the building body, and has poor sanitary conditions.

5. At present, the secondary pressurized water supply storage ponds of most high-rise buildings adopt a rectangular water supply tank which is numbered 12S101 (replacing 02S 101) in a national building standard design atlas, and are arranged in an underground room of one high-rise building for the use of the whole community. The maximum nominal volume is 786m, the length, width and height of the box body are 19.88m multiplied by 9.88m multiplied by 4m, and the weight of the water tank is 23.1 t. The thickness of the stainless steel plate is as follows: the top plate is 2mm, the bottom plate is 4mm, and the side plates are 3-4 mm. The rectangular water supply tank is divided into two types of welding type and assembly type, and is divided into a combined type and a punching type with various specifications. Currently, 10 production units are located in Beijing, Shanghai, Tianjin, Shenyang, Jinan, Shaanxi, etc. The approximate price for a rectangular tank is 2000 Yuan per 1m of nominal volume.

6. The rectangular water supply tank has the greatest advantages that the rectangular water supply tank is rapid and convenient to install, and each manufacturing factory has a professional team responsible for installation, debugging and maintenance, so that the quality is guaranteed.

7. However, due to the structural problem, the rectangular water supply tank has the following defects:

1) the cost is high, for example, the cost of a water tank for cultivating trees at 786m is about 160 ten thousand yuan;

2) the space utilization of the basement of the building body is low: the clear distance between the side surface of the water tank and the inner wall surface of the underground chamber is 1m, the clear distance between the top of the water tank and the floor slab is 0.8m, the bottom surface of the water tank is 0.5m away from the ground, and the space utilization rate of the basement is about 60% or lower according to 786m water tank plantation; the underground chamber is very messy, and the daily cleaning and sanitation workload is large;

3) the internal structure of the water tank is complex, and cleaning personnel are difficult to work in the tank; the water tank made of the thin-wall stainless steel plate can not bear the internal water pressure, and the channel steel frame ([ 12.6) outside the water tank can only bear partial internal water pressure. Therefore, the inside of the box is provided with a plurality of layers of stainless steel bracing pieces (-60 multiplied by 6), the vertical, longitudinal and transverse intervals are about 600 plus 800, and workers in the box are difficult to turn around. In addition, the clear distance between the box top and the floor slab is only 0.8m, and workers can go from the outer ladder (width 400) to the manhole (500 multiplied by 500) and then from the inner ladder (width 400) to the inside of the box, which is extremely difficult;

4) in the brace net with dense hemp inside the water tank, the guide plate can not be arranged, so that if a conventional water inlet ball float valve is adopted, a dead water area caused by short circuit of water inlet and outlet in a large water tank is inevitable, and the water quality is influenced;

5) in order to solve the problem of water flow short circuit, a national standard drawing set O1SS105 'common small-sized instrument and special valve selection and installation' introduces a 'hydraulic water level control valve', the model number of which is H142X4T-A, H142X4-A, H142X10-A, and the caliber of which is DN =80, 100, 150, 200, 250, 300 and 350.

The working principle of the hydraulic water level control valve is as follows:

when the water level in the water storage tank is at the highest water level, the water inlet valve is completely closed, and the water source of the water user comes from the stored water in the water storage tank. When the water level in the water storage tank is reduced to the lowest water level, the water inlet valve is completely opened, the water level in the water storage tank is rapidly increased to the highest water level, and the water inlet valve is completely closed in time. The operation is repeated in a circulating way. The operation mode ensures that the stored water in the water storage tank is updated in time without the problem of a dead water area, thereby ensuring that the water quality is not rotten. The biggest drawback is that when the water level in the water storage tank is low, if the urban water supply pipeline is suddenly cut off, the water storage tank loses the capability of providing emergency buffer water supply for the community. In addition, the noise is very big when the water tank is intake, influences resident's rest in the building.

The water level in the water storage tank is always at the highest level by the conventional ball float valve water inlet mode, so that the water storage tank plays a role in emergency rescue.

The applicant has seen that there is a large residential area, and the design unit chooses a hydraulic water level control valve, and the operation unit adds a conventional float valve after balancing the advantages and disadvantages, and deactivates the water level control valve (but does not dismantle). It follows that the mechanism of a hydraulic level control valve is lost and is not reimbursed. The thin-wall stainless steel rectangular water supply tank which is generally adopted at present is a relatively advanced technology, but the defects are serious, and the improvement is urgently needed.

At present, fire-fighting water storage pools of communities are mostly independently built on outdoor open grounds or are respectively built in underground rooms and secondary water supply water storage pools.

Disclosure of Invention

In view of the above situation, the present invention provides a water storage and pump house system for secondary pressurized water supply and fire protection, which can effectively solve the problems described in the background art.

In order to achieve the purpose, the technical scheme is that the water storage pool and pump house system for secondary pressurized water supply and fire fighting comprises a water storage pool and a pump house, wherein the water storage pool and the pump house are located below a terrace outside a small room, the water storage pool and the pump house are provided with a common side wall, a bottom plate and a top plate, the water storage pool and the pump house are separated by a partition wall, a secondary pressurized water pump and a fire pump which are communicated with the water storage pool are arranged in the pump house, a water collecting pit is arranged below the bottom plate in the pump house close to the partition wall, and a bottom valve in the water collecting pit is communicated with a sewage pump through a water inlet elbow, so that an integrally cast reinforced concrete structure is formed and is used as a foundation of a high-rise building.

The invention has scientific and reasonable design, improves the space utilization rate of the water storage pool of the basement from 60 percent to 100 percent, greatly increases the water storage capacity, saves the investment, occupies little outdoor green space, is an innovation on secondary pressurized water supply, and has remarkable social and economic benefits.

Drawings

FIG. 1 is a schematic plan view of a reservoir and pump house of the present invention;

FIG. 2 is a schematic elevation view of a reservoir and a pressurized water pump according to the present invention;

FIG. 3 is a schematic diagram of a fire pump according to the present invention in an elevation view;

FIG. 4 is a schematic view of the water inlet pipe of the water storage tank according to the present invention;

FIG. 5 is a schematic elevational view of the evacuation valve and dredge pump of the present invention;

FIG. 6 is a schematic plan view of a sump pit and dredge pump of the present invention;

FIG. 7 is a schematic view of the interior of a storage tank showing the vertical side of the partition wall;

FIG. 8 is a schematic elevation view of the pump house interior partition wall installation of the present invention;

fig. 9 is a schematic plan view of a water storage tank and a pump room of a super-large community of the invention.

In the invention, the numbering of each element on the graph adopts a hierarchical nomenclature as follows:

1-reservoir 11-side wall

12-dividing wall

13-cellular wall

14-guide wall 141-ventilation square hole

15-base plate 151-cushion layer

16-Top plate

17-overflow level

18-highest water level

19-fire water level

10-lowest water level

2-pump room 21-pressurized water pump 211-first water inlet valve

212-Water inlet bell mouth

22-fire pump 221-second water inlet valve

222-inlet elbow and bell mouth

23-dredge pump 231-bottom valve

24-inlet pipe 241-gate valve

242-Water Filter

243 pressure reducing valve

244-ball float valve

25-ventilating pre-buried pipe 251-first elbow with filter screen

26-water gauge embedded pipe 261-water gauge

27-overflow pre-buried pipe 271-second elbow with filter screen

272-water bearing opening with vertical pipe

28-working hole embedded pipe 281-first flange blocking plate

29-manhole embedded pipe 291-second flange blocking plate

20-evacuation pre-buried pipe 201-evacuation valve with elbow

02-stair

002-water collecting pit

3-control Room

4-high-rise building 41-infilled wall

And 5, forming an outdoor terrace of the community.

Detailed Description

The following detailed description of the embodiments of the invention is provided in connection with the accompanying drawings and the detailed description.

Referring to fig. 1-9, a reservoir and pump house system for secondary pressurized water supply and fire control comprises a reservoir 1 and a pump house 2, wherein the reservoir 1 and the pump house 2 are located below a terrace 5 outside a small room, the reservoir 1 and the pump house 2 have a common side wall 11, a bottom plate 15 and a top plate 16, the reservoir 1 and the pump house 2 are separated by a partition wall 12, a secondary pressurized water pump 21 and a fire water pump 22 communicated with the reservoir 1 are arranged in the pump house 2, a sump 002 is arranged below the bottom plate 15 in the pump house 2 close to the partition wall 12, and a bottom valve 231 in the sump 002 is communicated with a sewage pump 23 through a water inlet elbow to form an integrally cast reinforced concrete structure and serve as a foundation of a high-rise building 4.

In order to ensure better implementation effect, the water storage tank 1 is divided into two independent equal parts by the dividing walls 13 in the water storage tank 1 so as to be convenient for regular alternate maintenance and cleaning without water stop, the two independent equal parts are respectively provided with a guide wall 14 for preventing short circuit of water inlet and outlet flows, and the top end of the guide wall 14 is provided with a ventilation square hole 141 of 0.3m multiplied by 0.3 m.

The water storage tank 1 is internally provided with a ball float valve 244, the water inlet pipe 24 at the upper part of the water storage tank 1 is of an inverted siphon type, one end of the water inlet pipe 24 is communicated with the ball float valve 244, the other end of the water inlet pipe is respectively communicated with a water supply pipeline below the terrace 5 outside the small compartment through a gate valve 241, a water filter 242 and a pressure reducing valve 243, the elevation of the central line of the water inlet pipe 24 is 300mm below the bottom surface of the top plate 16, and the gate valve 241, the water filter 242 and the pressure reducing valve 243 are all positioned 1m above the ground in the pump room 2, so that the installation, the maintenance and the operation are convenient.

The lower part of the partition wall 12 is pre-embedded with a working hole pre-embedded pipe 28 with the diameter D700 and a flange plate, the working hole pre-embedded pipe 28 is matched with a first flange blocking plate 281 for use, and is used as a working hole for periodically overhauling and cleaning the water storage tank 1, the central lines of the working hole pre-embedded pipe 28 and the first flange blocking plate 281 are 1.5m higher than the floor of the pump room 2, and the working hole pre-embedded pipe 28 and the first flange blocking plate 281 are used for projecting light into the water storage tank 1 and carrying out conversation between workers inside and outside the tank.

The manhole embedded pipe 29 with a flange plate and the diameter D800 is embedded in the lower portion of the partition wall 12, the manhole embedded pipe 29 is matched with the second flange blocking plate 291 and used as a manhole for periodically overhauling and cleaning the water storage tank 1, the center lines of the manhole embedded pipe 29 and the second flange blocking plate 291 are 0.6m higher than the floor of the pump room 2, and the manhole embedded pipe and the second flange blocking plate 291 play a role in enabling workers to carry tool equipment to enter and exit the water storage tank 1, ventilating and the like.

The upstream surface and the inner surface of the water collecting pit 002 in the water storage tank 1 are provided with impermeable layers (in specific implementation, five impermeable layers can be adopted, and the known technology is well known), white porcelain plates are pasted, the ground is antiskid, and porcelain plates are pasted on the upstream surface of the division wall 13 and the guide wall 14 and the top plate 16.

The pipelines of the secondary pressurizing water pump 21 and the fire-fighting water pump 22 communicated with the water storage tank 1 are respectively provided with a first water inlet valve 211 and a second water inlet valve 221, the first water inlet valve 211 is communicated with a water inlet bell mouth 212, the second water inlet valve 221 is communicated with a water inlet elbow and a bell mouth 222, and the central lines of the first water inlet valve 211 and the second water inlet valve 221 are 300mm higher than the inner surface of the bottom plate 15.

The partition wall 12 is provided with a ventilating embedded pipe 25 and a water level gauge embedded pipe 26 respectively, the ventilating embedded pipe 25 is communicated with a first elbow 251 with a filter screen, the water level gauge embedded pipe 26 is communicated with the upper inlet and the lower inlet of the water level gauge 26 arranged on the back surface of the partition wall 12 respectively, the elevation of the central line of the ventilating embedded pipe 25 is 150mm below the bottom surface of the top plate 16, the elevation of the central line of the upper water level gauge embedded pipe 26 is the same as that of the central line of the water inlet pipe 24, and the elevation of the central line of the lower water level gauge embedded pipe 26 is the same as that of the central line of the water inlet pipe 222 of the fire-fighting water pump 22 and that of the central line of the first water inlet valve 211 of the pressure water pump 21.

The partition wall 12 is provided with an emptying pre-buried pipe 20, the emptying pre-buried pipe 20 is communicated with an emptying valve 201 with an elbow and is used for discharging flushing water in the water storage tank 1 to a water collecting pit 002, and the height of the bottom of the emptying pre-buried pipe 20 is flush with the inner top surface of the bottom plate 15 or is 20mm lower than the inner top surface of the bottom plate 15.

The separating wall 12 is provided with an overflow pre-buried pipe 27, the overflow pre-buried pipe 27 is communicated with a second elbow 271 with a filter screen and is used for discharging overflow water in the water storage tank into a water receiving port 272 with a vertical pipe, the water receiving port 272 with the vertical pipe is arranged on the back surface of the separating wall 12, the upper inlet of the water receiving port 272 with the vertical pipe is positioned under the second elbow 271 with the filter screen, and the lower outlet is positioned above the water collecting pit 002.

Specifically, as shown in fig. 1, the water storage tank 1 and the pump house 2 are a one-piece cast reinforced concrete structure, and the partition wall 12 divides the structure into two parts. The water storage tank 1 is divided into two independent equal parts by a partition wall 13 so as to be cleaned and overhauled periodically without stopping water. Each water storage tank is provided with a flow guide wall 14 to prevent short circuit of water flow of inlet water and outlet water, namely, a dead water area is prevented from appearing in the water storage tank 1, and the quality of drinking water is ensured. In the pump room 2, a secondary booster pump 21 and a fire-fighting booster pump 22 are installed, which can be designed into a plurality of sets according to the needs of users, wherein the water inlet pipe of the secondary booster pump 21 must be at the end of the water flow channel, while the water inlet pipe of the fire-fighting booster pump 22 can be at any position of the water flow channel, because the fire-fighting booster pump 22 is used frequently, it has no function of guaranteeing the water quality of the water storage pool. This fact has been communicated to the fire management department who thinks that there is enough fire fighting water at any time as long as they are guaranteed. It is possible to incorporate a dedicated fire-fighting water reservoir into the domestic drinking water reservoir.

The water source of the ball float valve 244 is from the city water supply pipeline, it guides the running water into the water inlet channel of the water storage tank 1, and reaches the secondary pressure water pump 21 and the fire pump 22 through the diversion wall 14, the water outlet pipe of the pump is connected to the corresponding pipe network of each building in the community.

The water storage tank 1 and the pump room 2 have a common side wall 11, a bottom plate 15 and a top plate 16, and the pump room 2 is provided with a stair 02.

The secondary pressurizing pump 21 and the fire pump 22 have a first water inlet valve 211 and a second water inlet valve 221, respectively.

As shown in fig. 2, the reservoir 1 and pump house 2 are located under a small compartmental terrace 5, with a common floor 15 (under which there is a bedding 151) and a common roof 16 (which is the floor of both the high-rise building 4 and the control room 3). The inner and outer walls of the high-rise building 4 are filled walls 41. In the pump house 2, a sump 002 is provided below the floor 15.

The top corner of the guide wall 14 is provided with a ventilation square hole 141, and the section of the ventilation square hole is 0.3m multiplied by 0.3 m.

The guide wall 14 can be built by solid bricks and cement mortar, and can also be built by thin reinforced concrete, and the thickness is 0.2 m.

Five anti-seepage measures are adopted for the inner surface of the side wall 11 of the water storage tank 1, the upper surface of the bottom plate 15 and the upstream surface of the dividing wall 12 and the inner surface of the water collecting pit 002, high-quality white porcelain plates are adhered, and the porcelain plates on the top surface of the bottom plate 15 have an anti-skid function.

The surfaces of the partition walls 13 and the guide walls 14 and the lower surface of the top plate 16 do not need an impermeable layer and only ceramic plates are adhered.

Five impermeable layers are firstly made on the upper surface of the top plate 16, then the impermeable layer of the coating special for the current toilet is made, and then the floor tiles are laid, so that the water quality safety is ensured.

The first water inlet valve 211 of the secondary pressurizing water pump 21 is connected to the water inlet bell 212. The center line of the first inlet valve 211 is 300mm higher than the inner surface of the bottom plate 15.

The lowest water level 10 in the water storage tank 1 is 0.15m higher than the inner surface of the bottom plate 15, and the water quantity between the fire-fighting water level 19 and the lowest water level 10 is equal to the effective water quantity of the special fire-fighting water storage tank which is independently built originally. The amount of water between the maximum water level 18 and the fire water level 19 is an effective regulation amount of drinking water for the water storage tank 1, and when the urban water supply network is suddenly cut off or planned to cut off water, the amount of water can ensure the minimum domestic water demand of residents in a community. The overflow level 17 is about 100mm above the maximum level 18. When the overflow water level 17 appears, the overflow is started, and when the highest water level 18 appears, the water inlet is stopped; when the fire water level 19 appears, the domestic drinking water pressurized water supply is stopped; when the lowest water level 10 occurs, the fire pump cannot be used.

As shown in FIG. 3, the second inlet valve 221 of the fire pump 22 is connected to the inlet elbow and the bell 222, the center line of the second inlet valve 221 is about 300mm above the inner surface of the bottom plate 15, and the lower edge of the bell 222 is 0.15mm above the inner surface of the bottom plate 15 and flush with the lowest water level 10. The gas permeable pre-buried pipe 25 is connected to a first elbow 251 with a screen, a stainless steel wire screen (18 mesh), which is embodied as described in standard set 12S101, page 95. The elevation of the central line of the air-permeable embedded pipe with the nominal diameter D150 is 150mm below the bottom surface of the top plate 16.

As shown in fig. 4, inlet pipe 24 is introduced from a water supply pipeline under the small area outdoor terrace 5, the elevation of which is determined according to the field situation. Enters the reservoir 1 in inverted siphon fashion (with its bottom approximately 1m above the pump house inner bottom) in the pump house 2 and communicates at its end with the float valve 244. A gate valve 241, a water filter 242, a pressure reducing valve 243, etc. are installed on the lateral pipe at the bottom of the inverted siphon, and function to prevent the ball float 244 from being blocked and damaged due to excessive throttling. Float valve 244 inlet tube 24 centerline elevation is about 300mm below the bottom surface of top plate 16. The first flange blocking plate 281 and the second flange blocking plate 291 are matched with the working hole embedded pipe 28 and the manhole embedded pipe 29, and can be made into a side-hung type with hinge shafts, and the designed working pressure of the side-hung type with hinge shafts is 1 Kg/cm.

The float valves 244 are preferably arranged in two side-by-side relationship with a clear spacing of greater than 200 mm.

As shown in fig. 5, the emptying pre-buried pipe 20 and the emptying valve with elbow 201 can discharge the flushing water in the water storage tank 1 to the water collecting pit 002, and the sewage pump 23 draws water from the water collecting pit 002 through the water inlet elbow pipe and the bottom valve 231 and discharges the water to the sewer network in the community. The two overflow pre-buried pipes 27 and the second elbow 271 with the filter screen discharge the overflow water in the water storage tank into the water-bearing vertical pipe 272.

As shown in fig. 6, the two dredge pumps 23 draw water from the sump 002 through the inlet elbow and the bottom valve 231, the cleaning water in the two water storages 1 is drained to the sump 002 through the two emptying pre-buried pipes 20 and the emptying valve belt elbow 201, and the two overflow water are merged into the water receiving belt vertical pipe 272 and drained into the sump 002.

As shown in FIG. 7, the transverse view of the figure is enlarged compared to FIG. 1 for clarity. The 6 air-permeable pre-buried pipes 25 are positioned at the highest position and have the caliber D150, and the central line of the air-permeable pre-buried pipes is 150mm below the bottom surface of the top plate 15; the central line of 2 water inlet pipes 24 is 300mm below the bottom surface of the top plate 16, and the caliber is D150 mm; the elevation of the bottom of the 2 overflow embedded pipes 27 is 400mm below the bottom surface of the top plate 16, and the caliber is D200 mm; the elevation of the central line of the upper embedded pipe 26 (seamless steel pipe D30X 3) of the water level gauge is the same as that of the central line of the water inlet pipe 24, and the elevation of the central line of the lower embedded pipe 26 (seamless steel pipe D30X 3) of the water level gauge is the same as that of the central line of the water inlet pipe 222 of the fire water pump 22 and that of the central line of the first water inlet valve 211 of the pressurizing water pump 21, and the elevations are 300mm above the inner top surface of the bottom plate 15; the elevation of the bottom of the 2 evacuation pre-buried pipes 20 is flush with or slightly lower than the inner top surface of the bottom plate 15 by 20 mm.

As shown in fig. 8, this figure corresponds to fig. 7. The highest position is provided with 6 first elbows 251 with filter screens, the lower position is provided with two water inlet pipes 24 and water level gauge embedded pipes 26, the lower position is provided with 2 second elbows 271 with filter screens of overflow embedded pipes, overflow water of the second elbows 271 with filter screens is discharged into a water collecting pit 002 through a water bearing port belt vertical pipe 272, and the vertical clear distance between the water outlet of the second elbows 271 with filter screens and the top end of the water bearing port 272 is 150mm, so that operators can observe the second elbows conveniently; in the middle there are two level gauges 261; a first flange blocking plate 281 with 6D 700 is arranged at the position of 1.5m on the inner top surface of the bottom plate 15, and a second flange blocking plate 291 is arranged at the position of 0.6m on the inner top surface of the bottom plate 15; there are two first inlet valves 211 at the lower position and two second inlet valves 221, the bottom of the evacuation valve 201 is flush with or slightly lower than the inner top surface of the bottom plate 15 by 20mm for easy drainage, and there are two bottom valves 231 of the sewage pump 23 in the sump 002.

As shown in figure 9, in a large-scale community, a high-rise building underground space with a large floor area is selected to build a water storage tank 1 and a pump room 2. In this case, the storage tanks 1 are located at both sides of the overall structure, the pump room 1 is centered, the partition walls 13 shown in fig. 1 are omitted, and the number of the guide walls 14 can be appropriately reduced according to the increased water supply amount.

The technical conception of the design of the invention is as follows:

1. the basement wall and bottom plate of a high-rise building in a community are changed into an integral cast-in-situ reinforced concrete structure, and an impermeable layer is added on the inner wall surface, so that the basement can be used as a water storage tank, and the original stainless steel plate water tank can be eliminated. Then a small part of the space of the water storage tank is divided to be used as a pressurizing pump room, and the whole secondary pressurizing water supply main facility is formed. The top plate of the water storage tank is also cast-in-situ reinforced concrete. The reinforced concrete structure with extremely strong integrity is also used as an underground box type foundation of a high-rise building body, and is ideal in stability and bearing strength;

2. the water storage tank is divided into two independent equal parts by the dividing wall, so that the water storage tank does not stop supplying water when being cleaned and overhauled alternately at regular intervals;

3. each water storage tank is provided with a flow guide wall for preventing short circuit of water inlet and outlet flows, and the top end of the flow guide wall is provided with a vent hole of 0.3m multiplied by 0.3 m. The water storage tank does not have dead corners of water, so that the water quality is not rotten;

4. at present, the residential areas are all provided with special water storage tanks for fire fighting, the reason is that secondary water supply storage tanks are expensive in manufacturing cost, the water quality requirement of fire-fighting water is not high, and even dead water which is not changed for months can be used as it is. After the invention is implemented, a stainless steel water tank is omitted, and the space utilization rate of the basement is improved to 100 percent from 60 percent. The water storage capacity can be greatly increased, so that the originally designed special water storage tank for fire fighting in the community can be eliminated, the investment is saved, the outdoor green land is occupied less, and the management is convenient. This fact has been recognized by the urban fire department;

5. the inner side surfaces and the inner bottom surfaces of the water storage tank and the pump room are all provided with five standard anti-seepage layers (namely five-layer complex bodies made of anti-seepage plastic films, waterproof felts and asphalt, known technology), and then high-quality white porcelain plates are pasted so as to be convenient for regular cleaning; the inner surface of the water collecting well in the pump room is also treated according to the treatment; the top plate of the water storage pool (namely the bottom floor plate of a high-rise building) is provided with five anti-seepage layers, then a special coating anti-seepage layer for a toilet is laid, and floor tiles are laid on the anti-seepage layer to ensure that the water quality of the water storage pool is not polluted absolutely. Five impermeable layers are not needed on the two side surfaces of the partition walls and the flow guide walls and the lower surface of the top plate of the water storage tank, but high-quality white porcelain plates are still needed to be pasted;

6. the water inlet pipe and the valve on the water inlet pipe of the existing secondary pressurizing pump room are laid at the high position of more than 2m above the ground of the pump room, the operation and the maintenance are very inconvenient, and the mode is changed into a reverse siphon mode, so that the water inlet filter, the pressure reducing valve and the water inlet gate valve are all positioned at about 1m above the ground in the pump room, and the installation, the maintenance and the operation are convenient;

7. the inlet of the overflow pipe on the existing water storage pool is designed according to the national standard, and is provided with a water inlet elbow, a vertical pipe section and a bell mouth thereon, and the parts have the function of reducing the amplitude of the water level of the overflow pipe. Water works operation practices prove that the key for preventing the clean water tank from overflowing is strict operation management, and the overflow pipe is not enough for preventing the clean water tank from overflowing. Therefore, the redundant pipe fittings are eliminated, so that the regular cleaning work of the water storage tank is facilitated;

8. the manhole for overhauling the existing water storage pool or water tank is arranged on the top plate, and the manhole is arranged on the partition wall because the water storage pool and the pump room are only separated by one wall, the number of the manholes is suitable for the flow guide wall, the height of the manholes is close to the ground in the pump room, the caliber of the manholes is D800mm, and the manholes are provided with flanges and movable blocking plates. The design working pressure is 1kg/cm, and the design working pressure is used for dismantling a construction template in the water storage tank during civil engineering construction and regularly flushing, inspecting and maintaining the running water storage tank. Before the manhole is opened in operation, the water level in the pool is firstly brought below the manhole by a water pump, and after the water level gauge is observed and confirmed, the manhole blocking plate is detached;

9. in operation, after cleaning, overhauling and maintenance personnel enter the water storage tank, sufficient ventilation and illumination are needed, and the water gun and various tool equipment are carried and are communicated with the outside. The invention adds the 'working hole' D700mm, the height of which is about 1.5m above the ground in the pump room, the structure of which is similar to the manhole, the working hole can greatly improve the working condition of the maintainer and improve the working efficiency.

When the invention is used, different devices can be added according to actual needs, such as:

1. in the pump room 2, ultraviolet ray supplementary sterilizing equipment and corresponding water quality monitoring instruments can be arranged, and the control of the equipment can be controlled by a control room 3 arranged in a building body in consideration of hoisting, ventilation, illumination, fire prevention, communication and washing sanitary facilities;

2. if the information in the water storage tank 1 needs to be remotely measured, the lead of the probe can enter through the first elbow 251 with the filter screen, and the tightness of the original steel wire mesh is not affected;

under the condition that the external water supply pipeline is cut off, the community management department needs to strictly plan water supply at regular time according to specific conditions. If the water level in the water storage tank 1 is lowered to the fire-fighting water level 19 and the residents in the community need domestic water urgently, whether some fire-fighting water can be used for rescuing the residents in the first time or not is negotiated and solved by the community management department and the fire-fighting department.

The invention has scientific and reasonable design, the utilization rate of the water storage tank in the basement space is improved from 60 percent to 100 percent, the water storage capacity is greatly increased, no water body dead angle exists in the water storage tank, the water quality is ensured not to be deteriorated, the special fire pool is merged into the secondary water supply water storage tank, the investment is saved, the outdoor greenbelt is occupied less, the invention is an innovation on secondary pressurized water supply, and the social and economic benefits are obvious.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto in any way, and those skilled in the art can make modifications or equivalent variations to the above-mentioned embodiments without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a tank and pump house system of secondary pressurization water supply and fire control, includes tank (1) and pump house (2), its characterized in that: the water storage tank (1) and the pump room (2) are located below a community outdoor terrace (5), the water storage tank (1) and the pump room (2) are provided with a common side wall (11), a bottom plate (15) and a top plate (16), the water storage tank (1) and the pump room (2) are separated through a partition wall (12), a secondary pressure water pump (21) and a fire water pump (22) which are communicated with the water storage tank (1) are arranged in the pump room (2), a water collecting pit (002) is arranged below the bottom plate (15) in the pump room (2) close to the partition wall (12), a bottom valve (231) in the water collecting pit (002) is communicated with a sewage pump (23) through a water inlet elbow, and an integrally-poured reinforced concrete structure is formed and is used as a foundation of a high-rise building body (4).

2. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the water storage tank (1) is divided into two independent equal parts through the partition walls (13) in the water storage tank (1) so as to be convenient for regular alternate maintenance and cleaning without water stop, the two independent equal parts are respectively provided with a guide wall (14) for preventing short circuit of water inlet and outlet flows, and the top end of the guide wall (14) is provided with a ventilation square hole (141) of 0.3m multiplied by 0.3 m.

3. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the water storage tank (1) in be equipped with ball-cock assembly (244), inlet tube (24) on water storage tank (1) upper portion are the inverted siphon type, inlet tube (24) one end is linked together with ball-cock assembly (244), the other end is linked together through gate valve (241), water purifier (242), relief pressure valve (243) and the water supply pipe under the outdoor terrace of district (5) respectively, 300mm below the bottom surface of inlet tube (24) central line elevation roof 16, gate valve (241), water purifier (242), 1m above the ground department in relief pressure valve (243) all is in pump house (2), be convenient for installation and overhaul and operation.

4. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the working hole embedded pipe (28) with the diameter D700 and the flange plate is embedded in the lower portion of the partition wall (12), the working hole embedded pipe (28) is matched with the first flange blocking plate (281) to be used as a working hole for periodically overhauling and cleaning the water storage tank (1), and the center lines of the working hole embedded pipe (28) and the first flange blocking plate (281) are higher than the floor of the pump room (2) by 1.5 m.

5. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the manhole embedded pipe (29) with the flange plate and the diameter D800 is embedded in the lower portion of the partition wall (12), the manhole embedded pipe (29) is matched with the second flange blocking plate (291) and used as a manhole for periodically overhauling and cleaning the water storage tank (1), and the center lines of the manhole embedded pipe (29) and the second flange blocking plate (291) are higher than the ground of the pump room (2) by 0.6 m.

6. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the water-facing surface in the water storage tank (1) and the inner surface of the water collecting pit (002) are provided with impermeable layers, white porcelain plates are pasted on the water-facing surface, the ground is antiskid, and porcelain plates are pasted on the water-facing surface of the partition wall (13) and the guide wall (14) and the top plate (16).

7. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the pipeline of the secondary pressurizing water pump (21) and the pipeline of the fire-fighting water pump (22) communicated with the water storage tank (1) are respectively provided with a first water inlet valve (211) and a second water inlet valve (221), the first water inlet valve (211) is communicated with a water inlet bell mouth (212), the second water inlet valve (221) is communicated with a water inlet elbow and a bell mouth (222), and the central lines of the first water inlet valve (211) and the second water inlet valve (221) are 300mm higher than the inner surface of the bottom plate (15).

8. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the air-permeable embedded pipe (25) and the water level gauge embedded pipe (26) are respectively arranged on the partition wall (12), the air-permeable embedded pipe (25) is communicated with a first elbow (251) with a filter screen, the water level gauge embedded pipe (26) is respectively communicated with an upper inlet and a lower inlet of the water level gauge (26) arranged on the back surface of the partition wall (12), the elevation of the central line of the air-permeable embedded pipe (25) is 150mm below the bottom surface of the top plate (16), the elevation of the central line of the water level gauge embedded pipe (26) on the upper part is the same as that of the central line of the water inlet pipe (24), and the elevation of the central line of the water level gauge embedded pipe (26) on the lower part is the same as that of the central line of the water inlet pipe (222) of the fire water pump (22) and that of the water inlet pipe (211) of the pressure water pump (21).

9. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the separating wall (12) is provided with an emptying pre-buried pipe (20), the emptying pre-buried pipe (20) is communicated with an emptying valve (201) with an elbow and used for discharging flushing water in the water storage tank (1) to a water collecting pit (002), and the height of the bottom of the emptying pre-buried pipe (20) is flush with the inner top surface of the bottom plate (15) or is 20mm lower than the inner top surface of the bottom plate (15).

10. A secondary pressurised water and fire storage and pump house system as claimed in claim 1, wherein: the separating wall (12) is provided with an overflow pre-buried pipe (27), the overflow pre-buried pipe (27) is communicated with a second elbow (271) with a filter screen and is used for discharging overflow water in the water storage tank into a water receiving port (272) with a vertical pipe, the water receiving port (272) with the vertical pipe is arranged on the back water surface of the separating wall (12), the upper inlet of the water receiving port (272) with the vertical pipe is positioned under the second elbow (271) with the filter screen, and the lower outlet of the water receiving port is positioned above the water collecting pit (002).

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