172 results about "Fire pump" patented technology

The invention, which relates to the technical field of fire safety, discloses a multi-modal intelligent identification method for fire-fighting hidden troubles based on a large model, comprising the following steps: S1, acquiring multi-source heterogeneous feature data through a sensor network deployed in a fire-fighting water pump room to obtain an initial feature set; s2, performing unified scale conversion on the initial feature set, calculating heterogeneous bridging parameters according to the environmental parameters and the equipment operation data, constructing a fusion feature vector, inputting the fusion feature vector into a preset neural network for feature weight adaptive adjustment, and outputting an adjusted weight vector; according to the fire-fighting hidden danger intelligent identification method based on the large-model multi-mode, intelligent closed loop from hidden danger identification to prevention and control decision making is realized, and the intelligent, dynamic and precise management level of a fire-fighting safety system is comprehensively improved.

The invention provides an intelligent inspection and remote diagnosis expert method and system for a fire pump station, and relates to the technical field of intelligent inspection, and the method comprises the steps: mapping the real-time operation data and historical maintenance records of the fire pump station to a domain knowledge graph, constructing a fault diagnosis reasoning chain, analyzing an abnormal state propagation path, generating maintenance suggestions, and retrieving historical cases. And evaluating scheme feasibility, constructing an optimal maintenance execution sequence and tracking a maintenance effect. The method can achieve the precise recognition of the abnormal state of the fire pump station, improves the fault diagnosis efficiency, optimizes the maintenance resource configuration, reduces the equipment fault rate, and guarantees the safe and reliable operation of the pump station.

The invention relates to the technical field of fire-fighting equipment, in particular to a diaphragm fire-fighting water pump with an automatic pressure stabilizing function and application thereof.The diaphragm fire-fighting water pump comprises a water pump body, a pressure stabilizing pump is fixed to the front side of the water pump body, a pressure stabilizing tank is fixed to the right side of the pressure stabilizing pump, and a film is fixed to the middle of the pressure stabilizing tank; a pressure supplementing assembly is arranged in the upper half part of the surge tank and comprises a pressure supplementing plate, an abutting rod and a cylinder sleeve, the upper end of the abutting rod is slidably connected with the cylinder sleeve, and a pressure spring used for pressing the abutting rod downwards is arranged in the cylinder sleeve; a gear is rotationally connected to the outer wall of the sleeve, a toothed plate is fixed to the outer wall of the abutting rod, a transverse plate is fixed to the right side wall of the gear, and a metal sheet is arranged above the transverse plate. By arranging the pressure supplementing assembly, in winter, the abutting rod downwards presses the pressure supplementing plate to downwards press the thin film, the pressure lost due to temperature reduction above the thin film is supplemented, pipe network water pressure reduction caused by air pressure reduction in winter is prevented, and burnout of the stabilized pressure pump is avoided; and meanwhile, by arranging an adjusting structure, the pressure can be adjusted and supplemented according to actual conditions during use, so that the practicability is improved.

The utility model discloses a pump head structure of a four-stage high-pressure relay fire pump, which comprises a pump head shell, a driving connecting mechanism is arranged at one end of the pump head shell, a pump water cavity is formed in the pump head shell, a pump shaft is rotatably arranged in the pump water cavity, the driving connecting mechanism is coaxially connected with the pump shaft, and the pump shaft is connected with the pump head shell. A water inlet is formed in the end, away from the drive connecting mechanism, of the pump head shell, a water outlet is formed in the side wall of the end, close to the drive connecting mechanism, of the pump head shell, and the water inlet and the water outlet both communicate with the water pumping cavity. The pump shaft is sleeved with at least four impellers, each impeller comprises a circular mounting plate, a center seat is formed in the middle of each mounting plate, a connecting hole is formed in the middle of one surface of each center seat, and the connecting holes are matched with the pump shaft. By improving the structure of the pump head impeller, higher water pressure can be generated.

The utility model provides an integrated fire pump skid which comprises a skid-mounted base, a liquid inlet pipeline and a liquid outlet pipeline, wherein the liquid inlet pipeline and the liquid outlet pipeline are arranged on the skid-mounted base; the skid-mounted base is further provided with a first power pump assembly and a second power pump assembly. The water inlet ends of the first power pump assembly and the second power pump assembly are connected with a liquid inlet pipeline, and the water outlet ends of the first power pump assembly and the second power pump assembly are connected with a liquid outlet pipeline; the first power pump assembly is a diesel engine power pump assembly; the second power pump assembly is an electric power driving pump assembly; one ends, connected with the liquid outlet pipeline, of the first power pump assembly and the second power pump assembly are provided with one-way valves. In actual use, the technical problem that in the prior art, a single power source is adopted for driving, and normal fire fighting is easily affected when equipment failures occur in the fire fighting process can be effectively solved.

The utility model relates to the technical field of fire pumps, in particular to a matched base of a vertical multi-stage fire pump set. Comprising a fire pump body and a fixing mechanism, the fixing mechanism comprises a bottom plate, a mounting table, a positioning pin, a locking block, a left supporting arm, a right supporting arm, a limiting seat, a tensioning screw rod and a nut, two bolts are taken down, the tensioning screw rod is taken down after the nut is taken down, the left supporting arm and the right supporting arm are completely loosened, and then the left supporting arm and the right supporting arm are directly taken down respectively. According to the base structure, when the fire pump body is disassembled, the plug pin can be directly taken down, the tensioning screw rod can be taken down only by taking down one nut subsequently, then the locking blocks can be taken down after being completely loosened, and the fire pump body is lifted up to be separated from the four positioning pins. And finally, the fire pump main body can be directly lifted upwards and taken down, compared with traditional fixation through multiple bolts, disassembly is more convenient, and then rapid disassembly can be achieved during later maintenance and disassembly of the fire pump main body.

The utility model relates to the technical field of fire fighting equipment, and discloses a four-stage high-pressure relay fire pump which comprises a pump body, a pump head and an electric control assembly. A driving mechanism and a transmission mechanism are arranged in the pump body, and the output end of the driving mechanism is connected with the transmission mechanism. The pump head comprises a pump head shell, a driving connecting mechanism is arranged at one end of the pump head shell, a water pumping cavity is formed in the pump head shell, and a pump shaft is rotationally arranged in the water pumping cavity and sleeved with at least four impellers. The impeller comprises a circular mounting plate, a center seat is formed in the middle of the mounting plate, a plurality of arc-shaped baffles are circumferentially distributed on the other surface of the mounting plate, and pump blades are arranged on the outer sides of the arc-shaped baffles. The pump head shell is provided with a water inlet and a water outlet which are both communicated with the water pumping cavity. The high-rise building fire-fighting device is reasonable in structural design, water pressure is improved through the four-stage impeller design, the fire-fighting requirement of a high-rise building is met, intelligent monitoring and adjusting are achieved through the electric control assembly, and the fire-fighting rescue efficiency is improved.

The invention discloses casting equipment for a copper casting fire pump, and relates to the technical field of fire pump casting, the casting equipment comprises a case and an injection molding device, the injection molding device is fixedly mounted on the top of the inner wall of the case; the fixing frame is fixedly mounted on the inner wall of the case; the electric telescopic rod is fixedly installed on the face, away from the case, of the fixing frame. The mold is fixedly mounted at the output end of the electric telescopic rod; the cleaning box is fixedly mounted at the bottom of the inner wall of the case; a fixing plate is fixedly installed on the inner wall of the machine box, a baffle is fixedly installed at the fixed end of the electric telescopic rod, an ejector rod is slidably installed on the surface of the mold, a square plate is fixedly installed on the face, away from the machine box, of the ejector rod, and the baffle is used for pushing the ejector rod to eject the fire pump clamped in the mold. And the fire pump clamped in the mold is ejected out through the ejector rod, and the situation that the fire pump is clamped in the mold, and subsequent production and machining are affected is prevented.

The utility model discloses a high-pressure water flow atomization uniformity adjusting spray head device of a fire pump, which belongs to the technical field of fire fighting equipment, comprises a water guide circular pipe and a spray head main body, and is characterized in that the spray head main body is arranged at the right end of the water guide circular pipe, and the inner wall of the water guide circular pipe is fixedly connected with an annular guide rail and a fixing ring respectively; the left side face of the fixing ring is fixedly connected with a filter cylinder, the interior of the annular guide rail is rotationally connected with a cross-shaped support, impurities in water flow can be filtered through the filter cylinder, the impurities are prevented from entering the spray head body to cause blockage, and normal work of the spray head is not affected, and the impeller drives the cross-shaped support to rotate in the annular guide rail under the impact of the water flow. The connecting rod on the cross-shaped support and the cleaning brush rotate along with the cross-shaped support, the cleaning brush continuously makes contact with the filter cartridge to clean the filter cartridge, impurities are prevented from being accumulated on the filter cartridge, smoothness of the filter cartridge is kept, water flow can more stably pass through the filter cartridge and the spray head body, and even atomization can be achieved.

The utility model belongs to the field of fire station, concretely relates to a fire pump miniature fire station, it includes river course, ladder, ground, water pump control cabinet, electric meter box, masonry support, fire pump, filter valve, fire pipe, galvanized channel steel steel support and stainless steel filter screen. Through reasonable layout each component, has realized miniaturization design, has collected water source extraction, water quality filtration, electric power control and equipment support function in an organic whole, is fit for small space deployment. Double filtration system has improved water quality cleanliness significantly, centralized management design has improved operation convenience, and the stable support structure has strengthened the security, and the optimization design has reduced the floor area and maintenance cost. The utility model solves the problem of the prior art that the equipment occupies large floor area, the water quality filtration effect is poor, the operation is inconvenient and the maintenance cost is high, has the advantage that energy -conserving and environment -friendly.

The invention relates to the technical field of fire pumps, and provides a fire-fighting dual-power water supply device which comprises a base, a control cabinet, a stabilized pressure pump set, a motor pump set and a diesel engine pump set, the water inlet pipe is connected with a slow flow box which is internally provided with a filtering mechanism; the filtering mechanism has a common state and an emergency state; the filtering mechanism comprises a plurality of filtering plates which are arranged in sequence; in a common state, the filter plate continuously rotates to push fluid to the slow flow pipes on the two sides respectively; in an emergency state, the filter plates are in a horizontal state and sequentially abut against one another, and fluid penetrates through the filter plates to be filtered; the fine filtering requirement in the emergency mode can be met, water supply is stable, and kinetic energy in the maintenance period of the diesel engine can be recycled.

The utility model provides a box pump integration fire-fighting pump room, including control cabinet, water pump, air pressure tank, equipment room, water tank room and outer box body, the control cabinet is electrically connected with water pump, the input end of water pump is communicated with water tank room through the pipeline, the output end of water pump is communicated with air pressure tank and water supply pipe network through the pipeline, a rubber air bag is arranged in the air pressure tank, water output by the water pump is stored in the rubber air bag, compressed air is filled between the rubber air bag and a tank body of the air pressure tank, the equipment room is located above the air pressure tank, and an inspection manhole is formed in the top of the equipment room. By changing the integrated layout of the box pump, arranging the equipment room above the air pressure tank and arranging the inspection manhole in the equipment room, when the air pressure tank capsule needs to be overhauled, the air pressure tank capsule can be replaced from the top by opening the top inspection manhole and detaching the air pressure tank film clamping opening, and the air pressure tank does not need to be detached.

The utility model belongs to the technical field of foam generator, especially involve a foam generator of full mixing, including liquid inlet flange, the top of liquid inlet flange is welded with liquid inlet pipe, the top of liquid inlet pipe is welded with casing, the inner wall of liquid inlet pipe is fixedly connected with accelerating tube, the top of one end of accelerating tube is fixedly connected with nozzle, through setting fairwater, when the fire, the foam mixed solution that comes from the fixed fire pump is injected into the nozzle through the accelerating tube in the liquid inlet pipe, forms the atomized jet of diffusion, atomized jet breaks the sealed glass through the breakage groove, produces the negative pressure around simultaneously, air enters the inside of casing through the through -hole of foaming plate outer wall, make air mix with foam mixed solution fully through fairwater, so that inhale a large number of air and form air foam, air foam is sprayed from the liquid outlet flange through the liquid outlet pipe, the surface of burning thing is covered with foam steadily, realizes the foam fire extinguishing operation.

The utility model discloses a protective wall body structure of a fire pump room for chemical safety, and particularly relates to the field of protective wall bodies, the protective wall body structure comprises a concrete wall body, leveling layers are arranged on the inner side and the outer side of the concrete wall body, a first anti-cracking net is arranged on one side of each leveling layer, and a decorative plate is arranged on one side of the first anti-cracking net on the outer side. And heat preservation cotton is arranged on one side of the first anti-cracking net on the inner side. According to the fire pump room, the overall strength is improved through the arranged first anti-cracking net, the situation that the wall body cracks in the later period, and the waterproof protection effect is affected is avoided, the heat preservation effect on the fire pump room is achieved through the heat preservation cotton, the situation that an internal pump body is frostbitten due to cold weather is avoided, and the heat preservation protection effect is achieved; and water spots are prevented from immersing into the wall body through the adhesive mortar layer to affect the protection effect, the anti-collision effect is achieved through the anti-collision plate, the situation that the wall body is collided and scratched when the pump body is installed, combined and used is avoided, and the protection effect is improved.

The utility model relates to the technical field of fire-fighting detection, in particular to a fire-fighting water pump adapter detection device which comprises a breather pipe, a detection table, a sliding rail and a connecting cover, a vertical plate is installed on one side of the outer wall of the upper end of the detection table, the sliding rail is installed on the outer wall of the side, away from the vertical plate, of the detection table, and a sliding block is installed in the sliding rail in a sliding mode. A sealing cover is connected to the outer wall of the upper end of the sliding block through a screw, a connecting cover is arranged on the outer wall of one side of the vertical plate, a connecting pipe is installed on one side of the inner wall of the connecting cover, and an adapter body is arranged on the outer side of the ventilation pipe, so that sealing of the adapter body located in the sealing cover and the connecting cover is ensured, and the detection environment sealing performance of the adapter body is ensured; and the detection data accuracy of the adapter body is ensured.

This image, as shown in the reference diagram, is intended to display the operating status of a fire pump installed in a fire engine or similar vehicle. The part for which design registration is sought displays a bar graph showing the discharge pressure and suction pressure (compound pressure) of the fire pump.

A forest firefighting remote water supply and drainage emergency mother-child vehicle, comprising a child vehicle (2), a mother vehicle (1) and a hand-held pump (4); a second chassis of the child vehicle (2) is provided with a second motor (23) and a second high-low pressure firefighting pump (22), the second motor (23) being in transmission connection with the second high-low pressure firefighting pump (22); a first chassis (11) of the mother vehicle (1) is provided with a power device, a first high-low pressure firefighting pump (12), a vehicle motor control cabinet (13), a water pump control cabinet (14) and a winch (15), the power device being used for providing power for the second motor (22), the hand-held pump (4), the vehicle motor control cabinet (13), the water pump control cabinet (14) and the winch (15). The forest firefighting remote water supply and drainage emergency mother-child vehicle can deploy the child vehicle to a position closer to a fire site or a water source, and can switch the second high-low pressure firefighting pump to a large-flow water supply mode or a small-flow and high-lift water supply mode, which does not need to additionally arrange a pressurizing device for pressurization, and reduces the laying of water pipes, thereby improving the flexibility of dealing with firefighting operations under different topographical conditions.

The utility model discloses an integrated fire pump house steel structure supporting device, which belongs to the technical field of steel structure supporting and comprises a supporting disc, a plurality of mounting holes are formed in the supporting disc, and a supporting shell is fixedly mounted on the lower surface of the supporting disc. An opening is formed in the lower surface of the supporting shell, a supporting inner plate is slidably mounted in the opening, and a first rotating shaft is fixedly mounted at the bottom end of the supporting inner plate; the supporting outer shell and the supporting inner plate are arranged to be used in cooperation, the supporting inner plate can slide relative to the supporting outer shell, and then adaptive adjustment and use can be conducted according to the distance between the steel structure and the wall body; the angle can be adaptively adjusted for use according to the angle between the steel structure and the wall body, so that the angle can be better adaptively adjusted for use according to the field installation condition of the steel structure, the use universality is improved, and operation and adjustment are convenient.

The present application relates to the field of fluid machinery, especially to a full-flow extreme power point rapid determination method and system for diesel engine fire pump set. According to the industry standard and pump set parameters, the method presets the reference parameters and solidifies the Q-N-H three-dimensional working condition mapping table to build a standardized test reference. Four test intervals are divided according to the flow, and exclusive control algorithm and safety protection logic are matched. After the equipment is preheated and stabilized, multi-source working condition data is collected through high-frequency sampling and time stamp calibration, and the real-time input power of the diesel engine is accurately calculated through sliding filter denoising, parameter normalization and multi-dimensional loss correction. Through the least square method five polynomial fitting P-Q characteristic curve, combined with the first and second derivative joint criterion, the only power maximum point in the effective flow interval is accurately calibrated. The method is accurate, fast and highly standardized, effectively improves the determination accuracy and efficiency of the extreme power point, and meets the combined rule detection requirements of the diesel engine fire pump set.

This utility model discloses an ultra-high pressure fire pump for forest fire prevention, comprising a mobile frame with casters installed at each of the four corners of the frame's bottom. A pump body mounting frame is fixedly connected to the mobile frame, and a detachable pump body is mounted on the mounting frame. An internal combustion engine for use with the pump body is also mounted on the mounting frame, with a fuel tank mounted on top of the engine. A fixing frame is fixedly connected to the bottom of the pump body, and the fixing frame is fixedly connected to the mounting frame by bolts. This utility model, through the synergistic optimization of the casters, positioning mechanism, lifting components, and modular installation design, significantly improves the mobility, stability, and maintenance efficiency of the ultra-high pressure fire pump in forest fire prevention scenarios, providing reliable technical support for rapid fire response and ensuring the continuity of firefighting operations.

The invention relates to the technical field of fire pump impellers, and discloses an anti-blocking marine fire pump impeller structure with a self-cleaning function, which solves the problem that the existing impeller is easily influenced by impurities and is difficult to operate normally, and comprises a pump body, the outer side of the pump body is fixedly connected with a water inlet pipe, and the top of the pump body is fixedly connected with a water drainage pipe; an anti-blocking mechanism and a linkage mechanism are arranged on the pump body, a support is fixedly installed on the outer side of the pump body, a driving motor is fixedly installed on the inner side of the support, a driving shaft is fixedly connected to the driving motor, the end, away from the driving motor, of the driving shaft extends into the pump body and is fixedly provided with an impeller disc, and a plurality of blades are fixedly connected to the outer side of the impeller disc at equal angles. According to the self-cleaning anti-blocking filter screen, the filter holes in the filter screen can be dredged, meanwhile, filtered impurities can be conveniently shaken off through vibration of the filter screen, the impurities can be prevented from being wound and accumulated on the surfaces of the blades, and therefore the self-cleaning and anti-blocking functions are achieved.

The utility model relates to the technical field of fire fighting, in particular to a multipurpose fire pump adapter convenient to use, which comprises an adapter valve and a water inlet pipeline arranged at the bottom of the adapter valve and communicated with the adapter valve, and an output pipe communicated with the adapter valve is further arranged on one side of the adapter valve. The output pipe comprises a water guide pipe arranged on one side of the adapter valve and communicated with the adapter valve and a connecting flange arranged on the outer wall of the end of the water guide pipe, and a quick-assembly bolt is detachably arranged on the connecting flange in a sliding mode.

The invention discloses a fire pump system and a cavitation monitoring method thereof and a storage medium, and belongs to the technical field of fire fighting, the fire pump system comprises a fire pump, an inlet pressure gauge and an outlet pressure gauge are respectively arranged at an inlet and an outlet of the fire pump; the water inlet pipe is connected with the reservoir and an inlet of the fire pump; the water outlet pipe is connected with an outlet of the fire pump; the port pressure gauge is arranged at a water inlet port of the water inlet pipe; and the control unit is electrically connected with the port pressure gauge, the inlet pressure gauge and the outlet pressure gauge. The problem that in the prior art, cavitation monitoring and warning cannot be well conducted in combination with the specific service scene of the fire pump is solved.

The invention provides an anti-seismic diesel engine fire pump set, which relates to the technical field of fire fighting equipment and comprises an anti-seismic diesel engine fire pump set base, a diesel engine and a fire pump, the anti-seismic diesel engine fire pump set base comprises a base frame and at least one reinforcing steel channel main beam arranged on the base frame. The diesel engine main engine is fixedly mounted on the anti-seismic diesel engine fire pump set base through the integrated base; the fire pump is fixedly installed on the anti-seismic diesel engine fire pump set base through pump feet and comprises a double-volute pump body fixedly installed on the pump feet, a pump cover connected with the double-volute pump body and located above the double-volute pump body, a pump shaft penetrating through the double-volute pump body and the pump cover and a double-suction impeller installed on the pump shaft. The anti-seismic performance of the diesel engine fire pump set is improved, and normal operation of the whole pump set under the earthquake working condition is guaranteed. According to the double-volute pump body and the double-suction impeller, the axial force generated when the impeller operates can be self-balanced, meanwhile, the radial force of the impeller is reduced, and the pump shaft operates more stably.

The utility model discloses a horizontal fire pump, which relates to the technical field of fire pumps and comprises a base, a first support is fixedly connected to the position, close to one end, of the upper surface of the base, a second support is fixedly connected to the position, close to the other end, of the upper surface of the base, and a water pump body is fixedly connected to the top of the first support. The top of the second support is fixedly connected with a motor, the output end of the motor is connected with a driving shaft, the driving shaft extends into the water pump body, and the end, located in the water pump body, of the driving shaft is connected with an impeller. According to the horizontal fire pump, limiting abutting can be conducted between the mounting frames of the fire pump, displacement of the fire pump assembly on the mounting frames can be prevented, the relative mounting stability of the fire pump assembly is improved, auxiliary bearing can be conducted when the fire pump is connected with a water pipe, and the fire pump assembly is convenient to mount and dismount. The accuracy of the connection position of the fire pump and the water pipe can be improved.

According to the composite double-suction fire pump impeller for low cavitation, the inlet impeller 2, the flow dividing impeller 3 and the double-suction impeller 4 are sequentially installed on the pump shaft 1, the flow state is effectively improved through a multi-impeller composite structure, and all the impellers supplement one another to achieve a certain synergistic effect on a flow path. The blade inlet angle of the inlet blade 21 is beta 1, the blade inlet angle of the splitter blade 31 is beta 2, the blade inlet angle of the double-suction blade 41 is beta 3, (a beta 1 + b beta 2) / (b beta 2 + c beta 3) = 0.6-0.85, a is the blade number of the inlet blade 21, b is the blade number of the splitter blade 31, and c is the blade number of the double-suction blade 41. Compared with the prior art, the inlet angles of the blades are optimized, the composite impeller structure is shaped, the flow state can be remarkably improved, the necessary net positive suction head of the pump is reduced, and noise and vibration can be effectively reduced.

The utility model discloses a modular prefabricated fire pump connecting assembly, which relates to the technical field of fire pump connecting assemblies and comprises two connecting blocks, valves are arranged on the outer walls of the rear sides of the two connecting blocks, spray heads are fixedly mounted at the rear ends of the valves, and fire pipes are fixedly mounted at the front ends of the valves. The first arc-shaped fixing block and the second arc-shaped fixing block are respectively moved out of the connecting shaft, so that the two connecting blocks can be separated, and after the two fire-fighting pipes are placed on the inner walls of the connecting blocks, the two fire-fighting pipes are connected with the connecting blocks in a rotating mode. When the two connecting blocks are closed, the first limiting block can be matched with the second limiting block in the closing process, then the first arc-shaped fixing block and the second arc-shaped fixing block are placed on the connecting shaft again, and the first arc-shaped fixing block and the second arc-shaped fixing block can be tightly connected by tightening the screw rod.

The invention belongs to the technical field of intelligent control, and discloses an energy storage fire pump pressure dynamic adjustment control method and system. The method comprises the following steps: detecting whether a plug-in box outputs a fire confirmation signal meeting a protection judgment condition or not, and obtaining corresponding fire plug-in box information; a row vector corresponding to the fire behavior plug-in box k is extracted from the pre-analyzed hydraulic coupling matrix, the hydraulic risk level and the thermal state risk coefficient of each non-fire behavior plug-in box s in the row vector are calculated, an optimized risk set minimum isolation set and a flow maintenance set are obtained, and a flow maintenance value is calculated for each non-fire behavior plug-in box in the flow maintenance set; sending a corresponding control instruction to each plug-in box, verifying whether each plug-in box meets a synchronization condition or not, and increasing the pressure of the fire pump from the standby pressure to the dynamic target pressure; detecting whether the fire behavior plug-in box k meets a fire behavior relieving condition, if yes, recovering normal operation, and if not, continuing detection; the fire-fighting flow is guaranteed to act on a fire point in a concentrated mode, and the risk of fire extinguishing failure caused by water flow short circuit is reduced.

The utility model relates to the technical field of fire pumps, in particular to a vertical multistage fire pump set which comprises a pump body, the left side of the pump body is fixedly connected with a first connecting pipe, the left side of the first connecting pipe is fixedly provided with a second connecting pipe through a bolt, and the outer side of the first connecting pipe is provided with a locking assembly used for limiting loosening of the bolt. The two guide blocks can be driven to move close to or away from each other by rotating a threaded rod of the locking assembly, the two supporting blocks, the second limiting frame and the first limiting frame are driven to move at the same time in a matched mode, the bolt is limited after the second limiting frame moves to the left side of the bolt, the nut is limited after the first limiting frame moves to the right side of the nut, and the bolt is prevented from loosening. A sealing gasket is arranged between the second connecting pipe and the first connecting pipe, the sealing performance between the second connecting pipe and the first connecting pipe is improved, and then the transmission effect of the fire pump can be improved.