Buried integrated fire pump station and construction method thereof

Abstract

The invention discloses a buried integrated fire pump station and a construction method thereof. The buried integrated fire pump station comprises a valve plate foundation, a water tank and a pump room. One side wall of the water tank and one side wall of the pump room abut against each other and are fixed to the valve plate foundation. A water inlet pipe communicated with an inner cavity of the water tank is arranged on the top wall of the water tank; a pump set is fixed in the pump room, a water inlet of the pump set extends to the confluence groove through a pipeline, and a water outlet extends out of the pump room through a water outlet pipe; a drainage ditch is formed in the bottom wall of the pump room in the circumferential direction, communicates with the confluence groove through a connecting pipe and extends out of the pump room through a blow-off pipe. The assembly type structure is adopted for assembly, the pump set communicates with the confluence groove, the pump room communicates with the confluence groove through the drainage ditch, the drainage ditch extends out of the pump room through the blow-off pipe, sediment in the pump room is discharged through the blow-off pipe, the self-cleaning capacity of the pump room is achieved, one-time input and long-term operation cost is low, and the energy-saving benefit is obvious.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and more specifically, to an in-ground integrated fire-fighting pump station and its construction method. Background Art

[0002] In most building constructions, it is necessary to build a fire-fighting pump house to meet the fire-fighting requirements. Most of the current fire-fighting pump houses are a kind of building structure that needs to be formed on the construction site. Although they can carry out fire-fighting operations, there are problems such as long construction periods and short service lives. To solve the above problems, prefabricated fire-fighting pump stations have been invented.

[0003] Chinese patent technology CN214614330U discloses an in-ground assembled integrated fire-fighting pump station, including a concrete raft slab. Above the concrete raft slab, there is a stainless steel partition, and the concrete raft slab and the stainless steel partition form a water tank. On one side of the water tank, there is a liquid level gauge, and on one side of the water tank, there is also a pump chamber. Inside the pump chamber, there is a water pump, and one end of the water pump extends into the water tank through a pipeline, and the other end of the water pump extends outside the pump chamber through a connecting pipe.

[0004] Although the fire-fighting pump station in the above patent realizes prefabrication to a certain extent, during construction, assembly operations still need to be carried out, resulting in cumbersome construction and easy leakage. Moreover, since a certain amount of water always needs to be stored inside the fire-fighting pump station, precipitation is extremely easy to form. These precipitates accumulate at the bottom of the water storage area, and over time, scale is extremely easy to form, thus posing a risk of blocking the pipeline during later use.

[0005] Therefore, how to provide an integrated fire-fighting pump station with a small volume, a short installation period, prevention of fire-fighting pipeline blockage, and a high degree of automation integration is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides an in-ground integrated fire-fighting pump station and its construction method. It is assembled using a prefabricated structure. The pump group is connected to the confluence trough, the pump house is connected to the confluence trough through a drainage ditch, and the drainage ditch extends outside the pump house through a sewage pipe. The precipitation inside the pump house is discharged through the sewage pipe to achieve the self-cleaning ability of the pump house.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An in-ground integrated fire-fighting pump station, including a valve plate foundation, a water tank, and a pump house;

[0009] One side wall of the water tank and the pump house abuts against each other and is fixed on the valve plate foundation; a water inlet pipe communicating with its inner cavity is provided on the top wall of the water tank, and a confluence trough is formed on the bottom wall; a pump set is fixed in the pump house, the water inlet of the pump set extends to the confluence trough through a pipeline, and the water outlet extends outside the pump house through a water outlet pipe;

[0010] A drainage ditch is provided circumferentially on the bottom wall of the pump house, the drainage ditch communicates with the confluence trough through a connecting pipe, and the drainage ditch extends outside the pump house through a sewage pipe.

[0011] The beneficial effect of the technical solution of the present invention is that the water tank and the pump house are integrally arranged. Water is stored in the water tank, and the water is pumped by the pump house for spraying or fire fighting use; the pump set pumps the water in the confluence trough, and some impurities in the water tank will precipitate in the confluence trough. At the same time, the impurities in the pump house will precipitate in the drainage ditch. The precipitates in the drainage ditch and the confluence trough can be discharged to the external environment through the connecting pipe and the sewage pipe. With the design of fluid mechanics, the fire pump station has good flow state, no blockage and self-cleaning function, and can effectively avoid the blockage of the fire pipeline.

[0012] Preferably, both the water tank and the pump house are box structures welded by multiple stainless steel plates, and the inner cavities of the water tank and the pump house are separated by partition plates; anti-corrosion asphalt is coated on the panel surfaces of the multiple stainless steel plates. The prefabricated installation of the fire pump station is realized through the stainless steel plates, and the anti-corrosion asphalt is used to ensure the corrosion resistance of the stainless steel plates and improve the service life of the fire pump station.

[0013] Preferably, a support frame is provided in the water tank, and the support frame is a pipe buckle frame to support the multiple stainless steel plates enclosing the water tank; the pump house is a portal steel frame support structure, and several keels are fixed at its top. The stainless steel plates of the water tank are easily impacted by water flow. By supporting the support frame in the water tank, the stiffness of the water tank can be improved, and the overall stability of the fire pump station can be improved.

[0014] Preferably, a manhole communicating with its inner cavity is provided on the top wall of the water tank, a end cover is hinged on the manhole, one end of the water inlet pipe penetrates through the side wall of the manhole, and the other end communicates with a water source; a maintenance opening is provided on the top surface of the pump house, and a cover is slidably connected to the maintenance opening. The water level in the water tank can be observed through the manhole, which is convenient for timely water replenishment; the pump set in the pump house can be maintained through the maintenance opening.

[0015] Preferably, a ladder is fixed on the inner wall of the pump house corresponding to the maintenance opening. The ladder can facilitate entering and exiting the pump house from the maintenance opening.

[0016] Preferably, a remote control float valve is fixed on the water inlet pipe, and a liquid level gauge is fixed inside the water tank. The liquid level gauge is communicatively connected to the remote control float valve to monitor the water level in the water tank and automatically replenish water; a Y-shaped filter is fixed near the water inlet end of the water inlet pipe. The cooperation of the remote control ball valve and the liquid level gauge can monitor the water level and feedback the water level signal to the water source pump to realize the automatic water replenishment of the water tank, with a high degree of automation; the Y-shaped filter can filter impurities in the water and reduce the amount of sediment in the water tank.

[0017] Preferably, a plurality of ventilation pipes are provided on the top wall of the water tank, and insect-proof nets are sleeved on the ends of the plurality of ventilation pipes; a power-free ventilator is fixed on the top wall of the pump house. Ventilation and air exchange are carried out on the water tank and the pump house through the ventilation pipes and the power-free ventilator to improve their use effects.

[0018] Preferably, a submersible sewage pump is provided in the pump house. The inlet of the submersible sewage pump is connected to the drainage ditch through a pipeline, and the outlet is connected to the sewage discharge pipe. The super strong suction of the submersible sewage pump is used to suck out the sediment in the drainage pipe and the confluence trough, prevent the generation of water scale at the bottom of the water tank and the pump house, and thus can effectively prevent the blockage of each pipeline in the fire pump station.

[0019] Preferably, the bottom wall of the water tank is higher than the bottom wall of the pump house. Using the design of fluid dynamics, it has good flow state, no blockage, and self-cleaning function.

[0020] The present invention also provides a construction method for a buried integrated fire pump station, using a buried integrated fire pump station in the above technical solution, including the following steps:

[0021] S1. Excavate the foundation pit and pour the valve plate foundation;

[0022] S2. Assemble the water tank;

[0023] S3. Assemble the pump house;

[0024] S4. Install the pump set;

[0025] S5. Fill with water and conduct pressure test.

[0026] It can be seen from the above technical solutions that compared with the prior art, the present invention discloses a buried integrated fire pump station and its construction method. It is assembled using a prefabricated structure. The pump set is connected to the confluence trough, the pump house is connected to the confluence trough through the drainage ditch, and the drainage ditch extends outside the pump house through the sewage discharge pipe. The sediment in the pump house is discharged through the sewage discharge pipe to realize the self-cleaning ability of the pump house; it is safe to use, and its reasonable design greatly reduces the generation of highly toxic and malodorous gases and protects the environment; it is completely buried for installation, and does not affect the surrounding environment and landscape after installation; the installation period is short, most of the costs are saved, and the maintenance is time-saving and labor-saving. One-time investment, low long-term operation cost, and obvious energy-saving benefits. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 Cross-sectional view of the pumping station provided by the present invention;

[0029] Figure 2 Schematic diagram of the support frame structure provided by the present invention;

[0030] Figure 3 Cross-sectional view of the support column provided by the present invention;

[0031] Figure 4 Schematic diagram of the manhole provided by the present invention;

[0032] Figure 5 Schematic diagram of the inspection hole provided by the present invention;

[0033] Figure 6 Top view of the pumping station provided by the present invention;

[0034] Figure 7 Top view of the pumping station after removing the top wall provided by the present invention.

[0035] Among them,

[0036] 1 - valve plate foundation;

[0037] 2 - stainless steel plate; 21 - partition; 22 - support column;

[0038] 3 - sewage discharge pipe;

[0039] 4 - water tank; 41 - manhole; 42 - ventilation pipe; 43 - water inlet pipe; 44 - support frame; 45 - confluence trough; 46 - remote control floating ball valve; 47 - Y-type filter;

[0040] 5 - pump house; 51 - inspection opening; 52 - non-powered ventilator; 53 - drainage ditch; 54 - cover; 55 - slide rail; 56 - ladder;

[0041] 6 - pump group; 61 - fire pump; 62 - spray pump; 63 - fire pressure stabilizing equipment; 64 - spray pressure stabilizing equipment;

[0042] 7 - connecting pipe;

[0043] 8 - liquid level gauge;

[0044] 9 - submersible sewage pump. Specific Embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1:

[0047] Refer to the attached Figures 1 to 7 , the embodiment of the present invention discloses an integrated buried fire pump station, including a valve plate foundation 1, a water tank 4 and a pump house 5;

[0048] One side wall of the water tank 4 and the pump house 5 abuts against each other and is fixed on the valve plate foundation 1; the top wall of the water tank 4 is provided with a water inlet pipe 43 communicating with its inner cavity, and the bottom wall is provided with a confluence groove 45; a pump set 6 is fixed in the pump house 5, the water inlet of the pump set 6 extends to the confluence groove 45 through a pipeline, and the water outlet extends outside the pump house 5 through a water outlet pipe;

[0049] A drain ditch 53 is provided circumferentially on the bottom wall of the pump house 5, the drain ditch 53 is connected to the confluence groove 45 through a connecting pipe 7, and the drain ditch 53 extends outside the pump house 5 through a sewage pipe 3.

[0050] In order to further optimize the above technical solution, the bottom wall of the water tank 4 is higher than the bottom wall of the pump house 5.

[0051] Refer to the attached Figure 1 and 7 , the water tank and the pump house are arranged side by side left and right, the confluence groove is located on the side close to the pump house, the water inlet of the pump set penetrates through the side walls of the water tank and the pump house through a pipeline and extends deep into the confluence groove to draw water in the confluence groove, the water outlet of the pump set can be connected to the indoor sprinkler pipe and the indoor fire pipe of the building. In order to achieve the self-cleaning ability of the fire pump station, the bottom walls of the pump house and the water tank are arranged up and down out of alignment. The bottom wall of the water tank is provided with a longitudinal slope of 1% - 2% inclined along the direction of the confluence groove, so that the sediment in the water tank can gather in the return groove. The bottom of the drain ditch is provided with a slope inclined along the position of the connecting pipe, and the connecting pipe is communicated with the outside through a sewage pipe to discharge the sediment, which can prevent the formation of water scale in the water tank and the pump house and prevent the pipeline from being blocked. The fire pump station provided in this embodiment has good flow state, no blockage and self-cleaning function through the design of fluid dynamics.

[0052] In this embodiment, as Figure 6As shown, both the water tank 4 and the pump house 5 are box structures welded by multiple stainless steel plates 2. The inner cavities of the water tank 4 and the pump house 5 are separated by a partition 21. The panels of the multiple stainless steel plates 2 are coated with anti-corrosion asphalt. The six side walls of the water tank and the pump house are all welded by stainless steel plates, and the thickness of the stainless steel plates is not less than 3 mm. Using the prefabricated construction method, the installation period is short, most of the costs are saved, and the maintenance is time-saving and labor-saving. With a one-time investment, the long-term operating cost is low, and the energy-saving benefit is obvious.

[0053] As Figure 1 and 3 shown, the valve plate foundation 1 is a reinforced concrete foundation, and the excavation depth is not less than 5.3 m to ensure that the fire pump station can be fully installed in a buried manner; the water tank 4 has a length * width * height = 13 m * 15 m * 3 m, and the effective volume is 500 m 3 ; the pump house 5 has a length * width * height = 7 m * 15 m * 3 m;

[0054] At the positions of the side walls of the valve plate foundation 1 corresponding to the water tank 4 and the pump house 5, foundation grooves 11 are provided, and support columns 21 are embedded in the foundation grooves 11. The support columns 21 can facilitate the installation of the side plates of the water tank 4 and the pump house 5. After the side plates are installed, anti-seepage expansion concrete is filled in the foundation grooves 11 to ensure the stable support of the side plates.

[0055] To further optimize the above technical solution, a support frame 44 is provided in the water tank 4. The support frame 44 is a pipe buckle frame to support the multiple stainless steel plates 2 that enclose the water tank 4; the pump house 5 is a portal steel frame support structure, and a number of keels are fixed at its top.

[0056] As Figure 2 shown, the support frame is a pipe buckle frame, which has horizontal pipes and vertical pipes. The horizontal pipes and the vertical pipes are connected by cross buckles. Channels are welded at the bottoms of the vertical pipes, and the channels are welded and fixed to the bottom plate of the water tank. Plates are welded at the tops of the vertical pipes and are welded to the top plate of the water tank. Plates are also welded at both ends of the horizontal pipes and are welded to the side plates of the water tank. Anti-rust treatment is carried out on the outer periphery of the support frame. By supporting in the inner cavity of the water tank through the support frame, the overall structural strength and stability of the water tank can be guaranteed, the use effect of the water tank can be ensured, and the water tank will not be damaged after being filled with water.

[0057] The pump house adopts a portal steel frame support structure. The side walls and the bottom wall of the pump house are all welded by stainless steel plates, and keels are provided on the top wall. Stainless steel plates are welded on the keels to ensure the structural strength and stability of the pump house through the portal support structure.

[0058] To further optimize the above technical solution, the water level in the water tank is monitored. A manhole 41 communicating with its inner cavity is provided on the top wall of the water tank 4. A cover is hinged on the manhole 41. One end of the water inlet pipe 43 penetrates the side wall of the manhole 41, and the other end communicates with the water source; an inspection opening 51 is provided on the top surface of the pump house 5, and a cover 54 is slidably connected to the inspection opening 51.

[0059] As Figure 4 and 5 shown, a manhole protruding from the top wall of the water tank is welded on the top of the water tank with a stainless steel plate. The water inlet pipe penetrates through the side wall of the manhole, and the water level inside the water tank can be observed through the manhole; a maintenance hole protruding from the top wall of the pump house is welded on the top of the pump house with a stainless steel plate, and the pump unit can be maintained by entering the pump house through the maintenance hole.

[0060] To further optimize the above technical solution, a slide rail 55 is fixed at the top end of the maintenance hole 51, and the cover 54 is slidably connected to the slide rail 55. The maintenance hole 51 can be opened and closed by pushing the cover 54, which is convenient for entering the pump house 5.

[0061] To further optimize the above technical solution and facilitate entering and exiting the pump house from the maintenance hole, a ladder 56 is fixed to the inner wall of the pump house 5 corresponding to the maintenance opening 51.

[0062] As Figure 7 shown, the ladder is welded by channel steel and steel plates, and the ladder is welded and installed against the pump house column. The ladder steps are firmly welded, and there is no sense of sinking when a single person steps on it.

[0063] To further optimize the above technical solution, to realize automatic water replenishment in the water tank, improve the automation level of the fire pump station, and at the same time ensure the cleanliness of the water entering the water tank, a remote control float valve 46 is fixed on the water inlet pipe 43, and a liquid level gauge 8 is fixed in the water tank 4. The liquid level gauge 8 is communicatively connected to the remote control float 46 to monitor the water level in the water tank 4 and perform automatic water replenishment; a Y-type filter 47 is fixed near the water inlet end of the water inlet pipe 43. The liquid level gauge and the remote control float valve can monitor the water level of the water tank, and the feedback signals include the inlet water level, the highest alarm water level, the highest water level, the lowest alarm water level, and the lowest effective water level. Through different water level signals, automatic water replenishment can be carried out into the water tank. It has a high degree of automation integration, can realize remote monitoring and management, can also realize mobile phone monitoring, and at the same time can realize functions such as remote data wireless transmission and automatic generation of operation reports.

[0064] To further optimize the above technical solution, to ensure that the fire pump station can ventilate and improve its use effect, multiple ventilation pipes 42 are provided on the top wall of the water tank 4, and insect-proof nets are sleeved at the ends of the multiple ventilation pipes 42; a power-free ventilator 52 is fixed on the top wall of the pump house 5.

[0065] In some other specific embodiments, to facilitate the cleaning of sediment, a submersible sewage pump 9 is provided in the pump house 5. The inlet of the submersible sewage pump 9 is connected to the drainage ditch 53 through a pipeline, and the outlet is connected to the sewage discharge pipe 3.

[0066] A sump is provided in the pump house, and the sediment in the drainage ditch will accumulate in the sump. One end of the connecting pipe is connected to the confluence trough, and the other end is connected to the sump. The submersible sewage pump is arranged in the sump, and the sediment is cleared out of the water tank and the pump house through the submersible sewage pump.

[0067] In this embodiment, as Figure 7 shown, the pump group 6 includes a fire pump 61, a spray pump 62, a fire pressure stabilizing device 63 and a spray pressure stabilizing device 64; both the fire pump 61 and the spray pump 62 are provided with two units, and the principle of one in use and one standby, and they are used as spares for each other. In actual use, one is in a normally open state and the other is in a normally closed state. When the pump in the normally open state fails, the pump in the normally closed state is started to ensure that the fire pump can exert its functional effect in special circumstances.

[0068] The two fire pumps 61 and the two spray pumps 62 are arranged staggeredly and connected in series with each other. The fire pressure stabilizing device 63 is connected to the fire pump 61, and the spray pressure stabilizing device 64 is connected to the spray pump 62. The pressure stabilizing device can effectively ensure the stable operation of the pump and reduce noise at the same time.

[0069] In this embodiment, the flow rate Q of the fire pump is 25L / S, H = 60m, N = 37KW; the flow rate Q of the spray pump is 30L / S, H = 70m, N = 37KW; the parameters of the fire pressure stabilizing device are XW(L)-Ⅱ-1.0-30-ADL, water pump: Q = 1.0L / S, H = 30m, N = 0.75KW, and two units are provided, one for standby and they are used as spares for each other; the spray pressure stabilizing device is XW(L)-Ⅱ-1.0-38-ADL, water pump: Q = 1.0L / S, H = 38m, N = 0.75KW, and two units are provided, one for standby and they are used as spares for each other; the pressure stabilizing value satisfies that the static water pressure at the most unfavorable point of the fire hydrant is greater than 0.15MPa under the quasi-working state. All the pump group pipelines are made of hot-dip galvanized steel pipes, with a pressure bearing of 1.6MPa and are connected by grooved clamps.

[0070] Embodiment 2:

[0071] The embodiment of the present invention discloses a construction method for an underground integrated fire pump station, and constructs the underground integrated fire pump station in Embodiment 1, including the following steps:

[0072] S1. Excavate the foundation pit and pour the valve plate foundation;

[0073] The depth of the foundation pit excavation is 5.3m, the slope coefficient is 1:0.5, and the size of the lower opening of the foundation pit is 500mm outside the cushion; the depth of the foundation pit is relatively large, and there are adjacent buildings around. The foundation pit is supported by a slope to ensure that the foundation pit does not collapse during construction;

[0074] During the excavation of the foundation pit, the earthwork of the foundation pit is excavated strictly in accordance with the foundation pit slope profile drawing, and over-excavation of the earthwork is strictly prohibited; arrange special personnel to measure the excavation of the foundation pit to ensure that the slope of the foundation pit meets the requirements of the drawing; arrange special personnel for supervision and guidance. Once the geology that does not conform to the geological exploration report is found, the excavation shall be stopped immediately and the design geological exploration site shall be notified to solve it; it is strictly prohibited to stack materials and earthwork within 1m around the foundation pit;

[0075] Before the excavation of the foundation pit, the surface of the project site shall be cleared first. After the surface clearing is completed, the earth excavation can be carried out. At the same time, the car washing equipment at the gate shall be installed during the earth excavation.

[0076] After the foundation pit is excavated, the steel bars of the valve plate foundation shall be tied and the concrete of the valve plate foundation shall be poured.

[0077] S2. Assembly of the water tank;

[0078] The water tank columns are connected to the raft foundation and installed with embedded bolts. After the side plates are installed, expanded anti-seepage concrete is poured.

[0079] Install the side plates according to the layout modulus of the side plate installation. After the installation is completed, connect the side plates firmly.

[0080] After the side plates are installed, install the diagonal bracing to ensure the stability of the vertical plates.

[0081] Assemble the support frame. Weld the backing plates at both ends of the horizontal pipe and weld them firmly to the side wall of the water tank plate; fix the channel steel at the lower end of the vertical pipe, and weld the channel steel to the bottom plate for fixation; after the side plates are installed, weld the support channel steel at the top of the support frame, and lay the water tank top plate on the top surface of the channel wall.

[0082] S3. Assembly of the pump house;

[0083] The assembly steps of the pump house are the same as those of the water tank. It should be noted that the side plates of the water tank and the pump house are connected to the valve plate foundation through support columns. After the side plates are installed, expanded anti-seepage concrete is poured into the foundation.

[0084] After the installation of the water tank and the pump house is completed, weld the manholes and inspection holes; after the installation is completed, coat the outer periphery of the water tank and the pump house with anti-corrosion asphalt, and at the same time backfill the foundation pit; it should be noted that if large machinery is used for the peripheral backfill soil compaction of the foundation pit, it will cause damage to the water tank plate and inclination of the frame body. Therefore, the foundation pit is backfilled with sand and gravel, and simple compaction is carried out with small machinery.

[0085] S4. Installation of the pump unit;

[0086] Organize the pump unit according to the installation construction drawings;

[0087] S5. Water injection and pressure test.

[0088] Inject water into the water tank, start the pump unit for pressure debugging, and it can be put into use after the debugging is completed.

[0089] In the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the similarities between the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0090] The foregoing description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated buried fire pump station, characterized in that, It includes a valve plate foundation (1), a water tank (4) and a pump house (5); One side wall of the water tank (4) and the pump house (5) abuts against each other and is fixed on the valve plate foundation (1); a water inlet pipe (43) communicating with its inner cavity is provided on the top wall of the water tank (4), and a confluence groove (45) is opened on the bottom wall; a pump group (6) is fixed in the pump house (5), the water inlet of the pump group (6) extends to the confluence groove (45) through a pipeline, and the water outlet extends outside the pump house (5) through a water outlet pipe; A drainage ditch (53) is provided circumferentially on the bottom wall of the pump house (5), the drainage ditch (53) communicates with the confluence groove (45) through a connecting pipe (7), and the drainage ditch (53) extends outside the pump house (5) through a sewage discharge pipe (3).

2. The integrated buried fire pump station according to claim 1, wherein Both the water tank (4) and the pump house (5) are box structures welded by multiple stainless steel plates (2), and the inner cavities of the water tank (4) and the pump house (5) are separated by partition plates (21); an anti-corrosion asphalt is coated on the panel surfaces of the multiple stainless steel plates (2).

3. The integrated underground fire pump station according to claim 2, characterized in that, A support frame (44) is provided in the water tank (4), and the support frame (44) is a pipe buckle frame to support the multiple stainless steel plates (2) enclosing the water tank (4); the pump house (5) is a gantry steel frame support structure, and a number of keels are fixed at its top end.

4. The buried integrated fire pump station according to claim 1, characterized in that, A manhole (41) communicating with its inner cavity is provided on the top wall of the water tank (4), an end cover is hinged on the manhole (41), one end of the water inlet pipe (43) penetrates through the side wall of the manhole (41), and the other end communicates with a water source; an inspection opening (51) is provided on the top surface of the pump house (5), and a cover plate (54) is slidably connected to the inspection opening (51).

5. The integrated buried fire pump station according to claim 4, characterized in that, A ladder (56) is fixed on the inner wall of the pump house (5) corresponding to the inspection opening (51).

6. The integrated buried fire pump station according to claim 1, characterized in that, A remote control float valve (46) is fixed on the water inlet pipe (43), a liquid level gauge (8) is fixed in the water tank (4), and the liquid level gauge (8) is communicatively connected to the remote control float (46) to monitor the water level in the water tank (4) and perform automatic water replenishment; a Y-shaped filter (47) is fixed near the water inlet end of the water inlet pipe (43).

7. The integrated underground fire pump station according to claim 1, characterized in that, Multiple ventilation pipes (42) are provided on the top wall of the water tank (4), and insect-proof nets are sleeved on the ends of the multiple ventilation pipes (42); a power-free ventilator (52) is fixed on the top wall of the pump house (5).

8. The integrated buried fire pump station according to claim 1, characterized in that, A submersible sewage pump (9) is provided in the pump house (5), the inlet of the submersible sewage pump (9) is communicated with the drainage ditch (53) through a pipeline, and the outlet is communicated with the sewage discharge pipe (3).

9. The integrated underground fire pump station according to claim 1, characterized in that, The bottom wall of the water tank (4) is higher than the bottom wall of the pump house (5).

10. A construction method for an underground integrated fire pump station, using an underground integrated fire pump station according to any one of claims 1 to 9, characterized in that, It includes the following steps: S1. Excavate the foundation pit and pour the valve plate foundation; S2. Assemble the water tank; S3. Assemble the pump house; S4. Install the pump group; S5. Fill with water and conduct pressure test.

Images