CN117846092A - Fire-fighting water pool system based on long-shaft deep-well pump - Google Patents

Abstract

The invention provides a fire-fighting water tank system based on a long-shaft deep well pump, which comprises a first fire-fighting water tank, a second fire-fighting water tank and a water absorbing well, wherein the first fire-fighting water tank is connected with the second fire-fighting water tank; the first fire-fighting water tank and the second fire-fighting water tank are independent water tanks and are provided with interval gaps; the water outlets of the first fire-fighting water tank and the second fire-fighting water tank are respectively communicated with the water absorbing well through flanged steel short pipes, and a cast iron gate is arranged at one end of the water absorbing well; the pump room is positioned above the water absorbing well, the water is pumped to the ground in the water absorbing well through a long shaft deep well pump in the pump room, and the control of the cast iron gate is realized through a hoist in the pump room; the top plates of the first fire-fighting pool and the second fire-fighting pool are covered with earthing, and the thickness of the earthing is larger than the maximum freezing depth of the position. The invention is provided with two completely independent fire-fighting water tanks, so that a large amount of fire-fighting water is more reliable and scientific, geothermal heat preservation can be utilized, and a long-shaft deep well pump is matched, so that the large-scale underground fire-fighting water tank becomes feasible, and the problems of large occupied area of a large-scale semi-ground pump house and high water pump power are solved.

Description

Fire-fighting water pool system based on long-shaft deep-well pump

Technical Field

The invention relates to the field of fire protection of substations, in particular to a fire-fighting water pool system based on a long-shaft deep-well pump.

Background

The large-scale oil-containing equipment such as an oil immersed transformer and a high-voltage reactor is the equipment with the highest fire hazard in an extra-high voltage transformer substation, and the accident fire is characterized by strong fire, high spreading speed, long burning time, large burning area, easy formation of boiling over, splashing and secondary explosion, and extremely high hazard degree. In the past few electric production fire accidents, large oil-containing equipment fires bring huge property loss and mental injury to people. The conventional common water fire-fighting system can only extinguish the initial fire of the small oil immersed transformer, and after the ultra-high voltage transformer is developed in a large scale, the conventional fire-fighting system cannot be used for extinguishing fire due to the extremely high fire load.

In recent years, the electric industry is continuously dedicated to researching the reinforced fire-fighting measures of the ultra-high voltage transformer substation, and along with the reinforced fire-fighting, the fire-fighting water consumption is continuously increased, and the consumption of the fire-fighting water exceeds thousands of tons. The flow rate of a single fire pump is more than 500 square/h, and the power exceeds 200kw. According to the prior fire-fighting pool, the volume is several hundred tons, or one seat is divided into two, and the two seats cannot meet the requirements of national standards. The fire-fighting water tank running for a long time can deposit sludge or grow algae to be overhauled, and fire-fighting water is lost when a single water tank is overhauled, so that potential safety hazards are caused. Meanwhile, the large-volume fire-fighting water tank is half-overground in the past, and special heat preservation measures are needed for the water tank in cold areas. The large-volume semi-overground fire-fighting water pool needs to be matched with a semi-overground pump house, so that the occupied area of the pump house water pool is large, and the engineering investment is increased. The matched water pump of the semi-overground pump house can only adopt a horizontal centrifugal pump, and the large-flow horizontal centrifugal pump has higher power (more than 300 kw), so that the problem that the water pump cannot be started normally in the existing newly-built engineering successively occurs.

Disclosure of Invention

Aiming at solving the problems of large volume, heat preservation of a fire-fighting pool, maintenance of the pool without stopping water and construction of a high-power fire pump, the invention provides a fire-fighting pool system which meets the national standard requirement based on the condition of using a long-shaft deep-well pump.

The technical scheme adopted by the invention is as follows: a fire-fighting water pool system based on a long-shaft deep-well pump comprises a first fire-fighting water pool with a top plate, a second fire-fighting water pool and a water absorbing well; the first fire-fighting water tank and the second fire-fighting water tank are adjacent independent water tanks, the structural bottom plate of the first fire-fighting water tank and the second fire-fighting water tank are completely separated, and a gap is formed between the first fire-fighting water tank and the second fire-fighting water tank; the water outlets of the first fire-fighting water tank and the second fire-fighting water tank which are positioned at the bottom are respectively communicated with the water absorbing well through flanged steel short pipes; the embedded flanged steel short pipe is provided with a cast iron gate at one end of the water absorbing well; the pump room is positioned above the water absorbing well, a long shaft deep well pump and a hoist are arranged in the pump room, water is pumped into the ground through the long shaft deep well pump, and the hoist is used for controlling the opening and closing of the cast iron gate; and the covering soil is covered between the top plates of the first fire-fighting water tank and the second fire-fighting water tank and the ground, and the thickness of the covering soil is larger than the maximum freezing depth of the position. The entity engineering of the invention is applied to the Chongqing extra-high voltage power transmission and transformation project for the first time, and is established.

The first fire-fighting water tank and the second fire-fighting water tank in the fire-fighting water tank system are adjacent independent water tanks, the structural bottom plates of the fire-fighting water tanks are completely separated, the two fire-fighting water tanks can be independently used, and the two fire-fighting water tanks can be mutually reserved during maintenance. Further, a gap is arranged between the first fire-fighting water tank and the second fire-fighting water tank, and the distance between the outer walls of the gap is larger than 1.2m.

Further, the covering soil is covered between the top plates of the first fire-fighting water tank and the second fire-fighting water tank and the ground, and the thickness of the covering soil is larger than the maximum freezing depth of the position, so that the problem that the fire-fighting water tank needs to be used at high altitude and low air temperature to consider heat preservation is solved.

Further, the water outlets of the first fire-fighting water tank and the second fire-fighting water tank at the bottom are respectively communicated with the water absorbing well through flanged steel short pipes, so that water in the two fire-fighting water tanks can respectively and independently enter the water absorbing well.

Furthermore, in the fire-fighting water tank system, the opening and closing of the cast iron gate is controlled through the opening and closing machine, so that the water inlet of the fire-fighting water tank is controlled, and the other water tank is overhauled under the condition of no water stopping.

Further, water inlets of the first fire-fighting water tank and the second fire-fighting water tank are positioned at the top of the side wall and are connected with independent water inlet pipes; the water inlet pipe is provided with a manual overhaul gate valve and a double-liquid-level ball float valve, water is automatically replenished when the water level is reduced to the lowest alarm water level, and water inlet is closed when the water level is increased to the water level at which the ball float valve is closed.

Further, the bottom of first fire-fighting water tank and second fire-fighting water tank still is equipped with the sump pit, and sump pit degree of depth 0.5 meter, when the pond needs to wash, the immersible pump can be placed to inside the sump pit for with fire-fighting water evacuation in the fire-fighting water tank, the problem that the underground water tank of conventionally not establishing the sump pit can't be emptied completely has been solved through this mode.

Furthermore, the first fire-fighting water tank and the second fire-fighting water tank are internally provided with guide walls, S-shaped guide channels are formed by the guide walls, the starting points of the guide channels are positioned at the water inlets, and the ending points of the guide channels are positioned at the water outlets; the air guide wall is provided with ventilation holes at intervals, the tops of the ventilation holes are flush with the lower part of the top plate, and through the arrangement of the air guide wall, dead angles of a flowing field are effectively prevented from being formed in the water pool.

Further, cover-type ventilation pipes are arranged on the top plate at the turning position of the diversion channel, the cover tops of two adjacent cover-type ventilation pipes have a certain height difference, and air stagnation in a fire-fighting water pool is effectively prevented through the arrangement of the ventilation pipes.

Furthermore, the flange steel short pipe is provided with an A-shaped flexible waterproof sleeve at the outer wall of the fire-fighting water tank, and a rigid waterproof wing ring is arranged on the outer wall of the water absorption well. Through the slow setting of A flexible waterproof sleeve pipe and rigidity waterproof wing, both can realize waterproof, can allow to have appropriate inhomogeneous subsidence between independent pond and the suction well again, improve the antidetonation effect.

Further, the first fire-fighting water tank and the second fire-fighting water tank are respectively provided with an independent overflow pipe, one end of each overflow pipe, which is positioned in the fire-fighting water tank, is provided with a horn mouth with an upward opening, and the horn mouth is leveled with a preset overflow water level.

Further, still include the overflow well, overflow pipe end termination is to the overflow well, be equipped with the submerged pump in the overflow well, when overflow well water level is 200mm apart from overflow pipe end, take out the fire fighting water in the overflow well through the submerged pump, effectively realize the indirect emission of fire fighting water pond overflow water, avoid outside rainwater refluence pollution fire fighting water.

Furthermore, the first fire-fighting water tank and the second fire-fighting water tank are respectively provided with independent remotely-transmitted input type liquid level meters, and liquid level signals are respectively transmitted to a control room for monitoring the water level of the fire-fighting water tank in real time; the water absorbing well is internally provided with a top-mounted magnetic turning column liquid level meter for monitoring the water level on site.

Furthermore, the fire water in the water absorbing well is supplied to an external fire water supply system in a boosting way through the long shaft deep well pump, the power of the long shaft pump is smaller than that of a common horizontal centrifugal pump, and the problem that a high-power fire pump is difficult to start is solved.

Furthermore, the water absorbing well of the fire-fighting water pool system is arranged underground, and a fire-fighting pump house is built above the water absorbing well. Reasonable use, solves the problem of large occupation of the large-scale semi-above-ground pump room.

Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: the invention can make a large amount of fire-fighting water more reliable and scientific by arranging two fire-fighting water tanks which can be completely and independently used. The top of the fire-fighting water tank is provided with enough earthing, the water tank is placed below the freezing depth, geothermal heat preservation is utilized, the fire-fighting water tank is not required to be preserved, and the problem that the fire-fighting water tank is required to be preserved when being used at high altitude and low air temperature is solved. The invention has the advantages that the pump pit is not needed to be arranged, the occupied area of the pump room is greatly saved, and the engineering investment is reduced. Compared with a half-land pump house, the invention adopts the long-shaft deep-well pump, has lower power than the common horizontal centrifugal pump under the condition of the same flow and lift, and solves the problem of difficult starting of the high-power fire pump. The two fire-fighting pools are provided with independent building enclosures, the bottom plates of the building are completely separated, the partition walls are not shared, and two seats instead of one seat are separated from each other in a real sense and strictly fit with the national standard. By arranging reasonable ventilation holes and ventilation pipes, the S-shaped diversion channel ensures that a large amount of fire water cannot be rapidly deteriorated even if the fire water is not used for a long time. The water inlet, water outlet, overflow and emptying of the fire-fighting water pool can be independently operated and do not interfere with each other, and the fire-fighting water pool can be mutually standby during maintenance, so that the maintenance of another water pool under the condition of no water cut-off is realized. The bottom of the water-proof pool is provided with a water collecting pit, and when the pool needs to be cleaned, a submersible pump can be placed in the water collecting pit for emptying fire water in the fire-proof pool. The outer wall of the water outlet of the fire-fighting water tank is provided with an A-shaped flexible waterproof sleeve, the flanged steel short pipe is provided with a rigid waterproof wing ring in the outer wall treatment of the water absorbing well, so that the water prevention can be realized, proper uneven settlement between the independent water tank and the water absorbing well can be allowed, and the earthquake-resistant effect is improved. The underground fire-fighting water-proof pool is provided with independent overflow pipes and overflow wells, so that indirect discharge of overflow water of the fire-fighting water pool is realized, and the fire-fighting water is prevented from being polluted by external rainwater backflow. The invention solves various construction problems of oversized fire-fighting water tanks with volume larger than 1000 tons and heat preservation requirement of the water tanks.

Drawings

Fig. 1 is a schematic diagram of a fire-fighting pool system based on a long-axis deep-well pump according to the present invention.

Fig. 2 is a cross-sectional view of a valve well at the water inlet of the fire water basin system shown in fig. 1.

Fig. 3 is a plan view of a fire water basin and a suction well of the fire water basin system shown in fig. 1.

Fig. 4 is a cross-sectional view of a fire water basin and a suction well of the fire water basin system shown in fig. 1.

Fig. 5 is a front view of a hoist and gate of the fire pool system shown in fig. 1.

Fig. 6 is a side view of a hoist and gate of the fire pool system shown in fig. 1.

Fig. 7 is a cross-sectional view of an overflow pipe of the fire water basin system of fig. 1.

Fig. 8 is a schematic view of a pipe clamp on the overflow pipe of fig. 7.

Fig. 9 is a schematic view of a pull rod and a lifting ring on the overflow pipe shown in fig. 7.

Fig. 10 is a plan view of an overflow well of the fire water basin system shown in fig. 1.

Fig. 11 is a cross-sectional view of an overflow well of the fire water basin system shown in fig. 1.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar modules or modules having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.

According to GB 50974-2014 technical Specification of fire Water supply and fire hydrant System, the total effective water storage volume of a fire-fighting pool is more than 1000m ³ When in use, two fire-fighting pools capable of being independently used are arranged. The fire-fighting water tank system based on the long-shaft deep-well pump comprises a first fire-fighting water tank with a top plate, a second fire-fighting water tank with a top plate, a water absorbing well, a water collecting pit, a valve well, an overflow pipe, a submersible sewage pump, a manual overhaul gate valve, a cover-type ventilation pipe, a double-liquid-level ball-cock, a cast iron gate, an opening and closing machine, a flange steel short pipe, a flexible waterproof sleeve, a rigid waterproof wing ring, a remote-transmission input type liquid level meter, a top-mounted magnetic turning column liquid level meter and the like. Through long-shaft deep-well pump application, the large-scale underground fire-fighting water tank becomes feasible, and the problems of large occupied area of a large-scale semi-above-ground pump room and high power of the water pump are solved.

Referring to fig. 1, the complete sets of facilities such as cushion layers, bottom plates, side walls, top plates, water inlet and outlet pipes and the like of the first fire water tank and the second fire water tank are completely independent of each other. The first fire-fighting water tank and the second fire-fighting water tank are provided with independent maintenance structures, the separation wall is not shared, the bottom plate of the structure is completely separated, and the two fire-fighting water tanks are adjacent. In the embodiment, the interval gap between the adjacent side walls of the two fire-fighting pools is larger than 1.2m, so that the requirement that a certain pool wall needs to be constructed for a single time to construct a template is met. The two fire-fighting pools can be used independently and can be used for standby when overhauling. The two fire-fighting water tanks have the length and width of 19200 x 22500 and the depth of 3250mm, and the effective volume of a single fire-fighting water tank is 1250 cubic, and the total effective volume is 2500 cubic.

Referring to fig. 2, the top plates of the first and second fire-fighting pools are covered with a covering soil from the ground, and the thickness of the covering soil is greater than the maximum freezing depth of the geographical location of the site. The fire-fighting water tank is built below the freezing depth, can be insulated by using geothermal heat, and solves the problem that the fire-fighting water tank needs to be considered for insulation at high altitude and low air temperature.

Referring to fig. 1 and 2, in the present embodiment, water inlets of a first fire-fighting water tank and a second fire-fighting water tank are located at the top of a side wall, and independent water inlet pipes are provided; the nominal diameter of the water inlet pipe is DN100, and the water inlet pipe is provided with a manual overhaul gate valve and a double-liquid-level ball float valve, and the specification is DN100. One end of the water inlet pipe is connected into the valve well, the diameter of the valve well is 1200mm, and the other end is connected into the fire-fighting water pool. A flexible waterproof sleeve is arranged at the position of the opening of the water inlet wall to prevent groundwater outside the water tank from entering the water tank to pollute the water source. The water inlet pipe is interlocked with the water level of the fire-fighting pool through the double-liquid-level ball float valve, water is automatically replenished when the water level is reduced to the lowest alarm water level, and water inlet is closed when the water level is increased to the closed water level of the ball float valve, so that automatic water replenishing is realized. In the embodiment, the overflow water level is-1.50 m, which is 100mm higher than the closed water level of the float valve, and the closed water level of the float valve is 1.60m; the closed water level of the float valve is 100mm higher than the lowest alarm water level, and the lowest alarm water level is-1.7 m, so that the fire fighting water capacity in the fire fighting pool is effectively ensured. The elevation of the inner bottom of the water inlet pipe is 150mm higher than the overflow water level, so that the water in the fire-fighting pool is prevented from flowing backwards to pollute tap water in the water inlet pipe. Only the water inlet of one of the fire-fighting water tanks is shown in fig. 2, and the other fire-fighting water tank is similar and will not be described again.

Referring to fig. 1, a pit is provided at the bottom of each fire pool, with a size of 800×800 and a depth of 0.5 m. And an inspection manhole is arranged on the top plate above the water pit, and the diameter D=800 mm of the inspection manhole. When the fire-fighting water pool needs to be cleaned, the submerged pump is placed in the water collecting pit through the inspection manhole to drain fire-fighting water in the water collecting pit, so that the problem that the underground water pool without the water collecting pit cannot be drained is solved.

Referring to fig. 1, 3 and 4, guide walls are provided in the first and second fire-fighting water tanks. In this embodiment, one of the two fire-fighting pools is taken as an example for explanation, and a continuous S-shaped diversion channel can be formed in the fire-fighting pool by arranging diversion walls at intervals, the starting point of the diversion channel is positioned at the water inlet, and the end point of the diversion channel is positioned at the water outlet; the fire water entering the fire water pond flows along the direction of the diversion channel, so that no dead water area is ensured in the pond, and the water quality is ensured to be reliable. In one embodiment, ventilation holes are formed in the diversion wall at intervals, so that dead angles of a flowing field can be avoided from being formed in the fire-fighting water tank, the hole tops of the ventilation holes are flush with the lower portion of the top plate of the fire-fighting water tank, and the preferable hole size is 200mm by 200mm.

In the embodiment shown in fig. 3 and 4, the diversion walls are arranged at 4500mm intervals, 4 diversion walls are arranged in one fire-fighting water pool, the length of each diversion wall is 16200mm, and ventilation holes on each diversion wall are arranged at 2000mm intervals.

Further, the cover-shaped ventilation pipes are arranged on the top plate at the turning part of the diversion channel, the cover tops of the two adjacent cover-shaped ventilation pipes have a certain height difference, and ventilation holes are matched, so that ventilation can be realized through wind pressure in the fire-fighting water tank, air stagnation in the fire-fighting water tank is prevented, and a large amount of fire-fighting water is ensured not to be rapidly deteriorated under the condition of long-term non-use. In one embodiment, the hood vent specification is DN200.

In a preferred embodiment, a flanged steel short pipe with a specification of DN800 is embedded at the water outlet at the tail end of the diversion channel. The flange steel short pipe is mainly used for communicating a fire water tank and a water absorbing well, the pipe bottom of the flange steel short pipe is flush with the tank bottom of the fire water tank, and the flange steel short pipe is inclined towards the water absorbing well with a certain gradient of 0.005 so as to ensure that fire water can completely flow into the water absorbing well. In order to prevent water leakage caused by uneven sedimentation between two fire-fighting water tanks and a water absorbing well, an A-shaped flexible waterproof sleeve is arranged at the outer wall of the fire-fighting water tank, penetrated by the flanged steel short pipe, and a rigid waterproof wing ring is arranged at the outer wall of the water absorbing well, penetrated by the flanged steel short pipe, so that the earthquake-proof effect is improved.

Referring to fig. 4, 5 and 6, a cast iron gate is arranged at the flange end of the water absorbing well with the flange steel short pipe, and the specification is thatA hoist is arranged on a top plate of the water absorbing well, the model is QSY, the hoist force is 2t, and the hoist and the long-shaft deep well pump are arranged in a fire pump room together. The side wall of the water absorbing well is provided with an on-off shaft guide frame, the tank wall is embedded with a steel plate with the specification of 2 blocks of 300 multiplied by 200 multiplied by 12. A hoist foundation is arranged on the top surface of the pool, the plane size is 400 multiplied by 400, steel plates are embedded on the foundation, the specification is 400 multiplied by 12, and the aperture is reserved in the center of the steel plates>The steel plate is used for penetrating the shaft of the hoist, the shaft screw of the hoist is made of stainless steel, a gap between the gate guide rail and the pool wall is secondarily irrigated, the installation stability is ensured, and the hoist can realize the control of opening and closing the cast iron gate. The long shaft deep well pump is deep into the water absorption well to absorb water, when one of the fire water tanks is cleaned, the corresponding gate is closed to stop water, and the other fire water tank can supply water for the water absorption well, so that the fire water is not affected, and the water tank can be overhauled under the condition of no water stopping. In this embodiment, in order to ensure that the cast iron gate can function normally, the water in the fire-fighting water tank flows into the water absorbing well normally, and the elevation of the inner bottom of the water absorbing well is required to be 200mm lower than the elevation of the outlet of the fire-fighting water tank.

Referring to fig. 7, when the float valve of the water inlet pipe fails, the water supply cannot be correctly closed, and at this time, an overflow pipe is further provided in this embodiment, the nominal diameter of the overflow pipe is DN200, the overflow pipe is L-shaped, an upward flare opening is provided at one end of the fire-fighting pool, and the flare opening has a specification of DN300×200. Please combine fig. 8, 9, the horn mouth passes through ferrule, pull rod, rings connection installation, and rings are pre-buried on the fire-fighting pool roof, set up the ferrule on the horn mouth after, realize ferrule and rings's connection through the pull rod, and the horn mouth elevation is leveled with the overflow water level of predetermineeing. In one embodiment, the overflow water level is 350mm away from the top plate of the fire-fighting water pond, the elevation of the overflow pipe outlet is-2.30 m, and an A-shaped flexible waterproof sleeve is arranged at the position of the overflow pipe outlet penetrating through the pond wall, so that groundwater outside the water pond is prevented from entering the water pond to pollute the water source.

Referring to fig. 10 and 11, an overflow well is provided at the end of the overflow pipe of the fire-fighting pool. The automatic stirring submersible sewage pump is arranged in the overflow well, and when the water level in the overflow well rises to a distance of 200mm below the tail end of the overflow pipe, the automatic stirring submersible sewage pump is operated to realize indirect drainage. Two automatic stirring submersible sewage pumps are arranged in the overflow well as shown in fig. 10 and 11, the two submersible sewage pumps are installed by adopting a fixed self-coupling mode, a pump stopping water level, a 1 pump starting water level, a 2 pump starting water level and an alarm water level are set in the overflow well, and when the water level in the overflow well reaches the 1 pump starting water level, the 1 submersible sewage pumps are started; when the water level in the overflow well reaches the starting water level of 2 pumps, starting 2 submersible sewage pumps; when the water level of the overflow well reaches the alarm water level, an alarm is given; stopping the submersible sewage pump when the water level in the overflow well is lower than the pump stopping water level; fire water in the overflow well is discharged to an outdoor rainwater inspection well through a submersible sewage pump. A flexible waterproof sleeve is arranged at the position of the overflow pipe outlet penetrating through the tank wall in the overflow well and the position of the automatic stirring submersible sewage pump outlet penetrating through the tank wall, so that groundwater outside the water tank is prevented from entering the water tank to pollute the water source.

Referring to fig. 3 and 4 again, a water suction pit is arranged at the bottom of the water suction well, and the water pump impeller part of the long shaft deep well pump penetrates into the water suction pit to pump water. Because the water absorbing well is communicated with the fire water pool through the steel short pipe with the flange, the water level in the water absorbing well is the same as the fire water pool and comprises the lowest alarm water level, the float valve closing water level, the pump stopping water level and the like. The first fire-fighting water tank and the second fire-fighting water tank are respectively internally provided with a remote input type liquid level meter, liquid level signals are remotely transmitted to a main control room to display the water level height in the fire-fighting water tank in real time, and alarm is given to the high water level, the low water level and the pump stopping water level; the top-mounted magnetic turning column liquid level meter is arranged in the water absorbing well, so that the water level in the water absorbing well, namely the water level in the fire water tank, can be observed on site. When the water level in the fire-fighting water tank is at the water level of stopping the pump, a water level alarm signal of stopping the pump is sent, and after a worker confirms that the water in the fire-fighting water tank is used up, the fire-fighting pump is manually turned off, so that the water pump is prevented from idling. It should be noted that in this embodiment, the fire-fighting water tank water level is not interlocked with the fire-fighting water pump, and needs to be confirmed manually, so as to avoid hidden danger caused by the fire-fighting water pump when the system fails to stop automatically.

With continued reference to fig. 4, in this embodiment, the water absorption well is disposed underground, the fire pump room is directly built above the water absorption well, and the pump room is directly built by using the occupied land of the water tank without disposing a pump pit on the partition wall of the underground fire water tank, so that the occupied land of the pump room is greatly saved, the excavation amount of the foundation pit is reduced, the engineering investment is saved, and the safety risk caused by excavation of the large foundation pit is also reduced.

Furthermore, in the embodiment, the long-shaft deep well pump is adopted to pump water deeply into the water absorption well, the impeller of the water pump is submerged into the water absorption pit, and water is directly absorbed under water through the impeller, so that the self-priming water absorption requirement of national standard requirements is met. The long shaft deep well pump motor is positioned in a pump room on the ground and is connected with the water pump through a pump shaft. For a large-scale fire pump with large flow and high lift, the power of the long-shaft deep-well pump is 10-20% lower than that of the horizontal centrifugal fire pump, the starting of the fire pump is easier to realize, and the problem of difficult starting of the high-power fire pump is solved.

It should be noted that, in the description of the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in detail by those skilled in the art; the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. A fire-fighting water pond system based on a long-shaft deep-well pump, which is characterized by comprising a first fire-fighting water pond with a top plate, a second fire-fighting water pond and a water absorbing well; the first fire-fighting water tank and the second fire-fighting water tank are adjacent independent water tanks, the structural bottom plate of the first fire-fighting water tank and the second fire-fighting water tank are completely separated, and a gap is formed between the first fire-fighting water tank and the second fire-fighting water tank; the water outlets of the first fire-fighting water tank and the second fire-fighting water tank which are positioned at the bottom are respectively communicated with the water absorbing well through flanged steel short pipes; the embedded flanged steel short pipe is provided with a cast iron gate at one end of the water absorbing well; the pump room is positioned above the water absorbing well, a long shaft deep well pump and a hoist are arranged in the pump room, water is pumped into the ground through the long shaft deep well pump, and the hoist is used for controlling the opening and closing of the cast iron gate; and the covering soil is covered between the top plates of the first fire-fighting water tank and the second fire-fighting water tank and the ground, and the thickness of the covering soil is larger than the maximum freezing depth of the position.

2. The fire water pond system based on the long shaft deep well pump according to claim 1, wherein the water inlets of the first fire water pond and the second fire water pond are positioned at the top of the side wall and are connected with independent water inlet pipes; the water inlet pipe is provided with a manual overhaul gate valve and a double-liquid-level ball float valve, water is automatically replenished when the water level is reduced to the lowest alarm water level, and water inlet is closed when the water level is increased to the water level at which the ball float valve is closed.

3. The fire water pond system based on the long shaft deep well pump, according to claim 1, wherein the bottoms of the first fire water pond and the second fire water pond are further provided with a water collecting pit, and when the water pond needs to be cleaned, a submersible pump is placed in the water collecting pit for completely draining fire water in the fire water pond.

4. The fire water pond system based on the long-axis deep-well pump, according to claim 1, is characterized in that the first fire water pond and the second fire water pond are respectively provided with a diversion wall, an S-shaped diversion channel is formed by the diversion walls, the starting point of the diversion channel is positioned at the water inlet, and the ending point of the diversion channel is positioned at the water outlet; and ventilation holes are formed in the guide wall at intervals, and the tops of the ventilation holes are flush with the lower part of the top plate.

5. A fire water pond system based on a long shaft deep well pump according to claim 3, wherein a hood-type ventilation pipe is arranged on a top plate at the turning position of the diversion channel, and the hood tops of two adjacent hood-type ventilation pipes have a certain height difference.

6. The fire water pond system based on the long shaft deep well pump, according to claim 1, wherein the flanged steel short pipe is provided with an A-shaped flexible waterproof sleeve at the outer wall of the fire water pond, and a rigid waterproof wing ring is arranged at the outer wall treatment of the water absorption well.

7. The fire water pond system based on the long shaft deep well pump according to claim 1, wherein the first fire water pond and the second fire water pond are respectively provided with an independent overflow pipe, one end of the overflow pipe, which is positioned in the fire water pond, is provided with a horn mouth with an upward opening, and the horn mouth is leveled with a preset overflow water level.

8. The long axis deep well pump based fire water pond system according to claim 7, further comprising an overflow well, wherein the overflow pipe is connected to the overflow well at the end, a submersible sewage pump is arranged in the overflow well, and fire water in the overflow well is pumped out through the submersible sewage pump when the water level of the overflow well is 200mm away from the end of the overflow pipe.

9. The fire water pond system based on the long-axis deep-well pump, according to claim 1, wherein the first fire water pond and the second fire water pond are respectively provided with independent remote input type liquid level meters, and liquid level signals are respectively transmitted to a control room for monitoring the water level of the fire water pond in real time; the water absorbing well is internally provided with a top-mounted magnetic turning column liquid level meter for monitoring the water level on site.

10. The long-axis deep-well pump-based fire water pond system according to claim 1, wherein the fire water in the suction well is pressurized by the long-axis deep-well pump to be supplied to an external fire water supply system.