JP2020079579A - Suspension method of pump device and pump device - Google Patents

Abstract

To provide a suspension method of a pump device which can prevent that a conduit pipe in which a pump device is arranged is twisted.SOLUTION: In this suspension method, a pump device 40 having a first pump 50 and a second pump 70 having a mirror structure of the first pump 50 is arranged in the middle of a conduit pipe 10, a plurality of drones 1, 6 are connected to the conduit pipe 10, and the pump device 40 is suspended together with the conduit pipe 10 by making the plurality of drones 1, 6 fly. The first pump 50 has a first impeller 52 and a first drive machine 51, and the second pump 70 has a second impeller 72 and a second drive machine 71. The first pump 50 and the second pump 70 are arranged symmetrically in mirror faces with respect to a center axial line CL of the conduit pipe 10. The second impeller 72 is rotated at a rotational speed which is the same as a rotational speed of the first impeller 52 in a direction reverse to the first impeller 52.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a method for suspending a pump device disposed in the middle of a conduit such as a hose or a tube connected to a plurality of drones. Further, the present invention relates to a pump device arranged in the middle of a conduit connected to a plurality of drones.

  In recent years, the number of high-rise buildings such as high-rise buildings is increasing. When a fire occurs in such a high-rise building, there is a possibility of causing great human damage and economic damage. In particular, when a fire occurs on a high-rise floor that is higher than the level at which water can be discharged by a ladder car, rapid fire extinguishing activities cannot be performed, and there is a high risk of causing serious human injury and economic damage.

  Here, the drone, which is defined as an unmanned moving body that moves in the air and/or underwater, is widely used in various fields such as imaging or monitoring, inspection or inspection, and measurement. A drone autonomously moves according to a preset purpose, or is a human being maneuvered using radio waves (radio waves, visible light, laser light of all wavelength bands, sound waves, ultrasonic waves, or a combination of these). Manipulated by a person or controlled by an external control device (including a computer) through radio.

  Therefore, when a fire occurs in a high place such as a high-rise floor, the fire hose nozzle is suspended by multiple drones including a top drone connected to the fire hose nozzle, and the fire hose nozzle is flown to the vicinity of the fire. It is desired to let them do. A fire hose is a conduit through which fire extinguishing liquid flows. If the drone, which is an unmanned vehicle, can transport the nozzle of the fire hose to the vicinity of the high-rise floor where the fire is occurring, it is possible to carry out fire fighting safely and quickly.

  Furthermore, when a disaster such as a huge earthquake occurs, water may be cut off in high-rise buildings. In this case, residents of high-rise buildings (especially residents of high-rise floors) may not be able to secure a sufficient amount of water. Water is an essential substance for sustaining human life activity. Therefore, a conduit such as a hose or a tube is suspended by a plurality of drones, and a drone connected to the tip of the conduit is flown to a desired floor to supply water to residents of a high-rise building through the conduit. Is desired.

  As described above, attention is focused on a technique of transporting the tip of a conduit suspended by a plurality of drones to a desired location and supplying the liquid to the desired location via the conduit. The end of the conduit is connected to a liquid sending device (for example, a fire truck or a pump device) arranged on the ground, and by driving the liquid sending device, liquid is conveyed through the conduit to a desired place. ..

  A pump device may be arranged in the middle of a conduit extending from the liquid delivery device in order to reliably transfer the liquid to a desired location. The pump device is used to increase the pressure of the liquid flowing in the conduit. FIG. 9: is a schematic diagram which shows an example of the conventional pump apparatus arrange|positioned in the middle of a conduit. The conduit 210 shown in FIG. 9 is suspended by a plurality of drones 206. The pump device 240 is inserted into the expanded diameter portion 210 a of the conduit 210, and is fixed to the inner surface of the conduit 210 by a plurality of fixtures (for example, ribs) 245. When a driving machine (for example, an electric motor) 241 of the pump device 240 is driven, the impeller 242 is rotated and the pressure of the liquid flowing through the conduit 210 is increased.

US Pat. No. 9,387,928 JP, 2012-51545, A

  However, when the impeller 242 of the pump device 240 is rotated, a torque (see arrow T′ in FIG. 9) opposite to the rotational direction of the impeller 242 (see arrow R′ in FIG. 9) is applied to the conduit 210. The problem that the conduit 210 is twisted occurs. In order to fly each drone 206 without twisting the conduit 210, it is necessary to mount a large thrust generator on each drone 206. As a result, each drone 206 that suspends the conduit 210 becomes large.

  Alternatively, a method may be considered in which a plate is fixed to the outer surface of the conduit 210 (for example, the outer surface of the expanded diameter portion 210a) and the air resistance of the plate is used to cancel the torque applied to the conduit 210. However, also in this case, since the plate body is increased in size in accordance with the output of the pump device 240, each drone 206 that suspends the conduit 210 is also increased in size.

  Therefore, an object of the present invention is to provide a suspension method for a pump device that can prevent the conduit in which the pump device is arranged from being twisted. It is another object of the present invention to provide a pump device that is arranged in the middle of a conduit suspended by a drone.

  One aspect of the present invention is a method of suspending a pump device arranged in the middle of a conduit through which a liquid flows, the method including: a first pump for increasing the pressure of the liquid; and a mirror image structure of the first pump. A pump device having two pumps is disposed in the middle of the conduit, a plurality of drones are connected to the conduit, and the plurality of drones are flown to suspend the pump device together with the conduit. The first pump has a first impeller and a first driving machine that rotates the first impeller, and the second pump rotates a second impeller and the second impeller. And a second drive unit for driving the first pump and the second pump, the first pump and the second pump are arranged in mirror symmetry with respect to the central axis of the conduit, and the second impeller of the second pump is The suspension method is characterized in that the first pump is rotated in the opposite direction to the first impeller at the same rotation speed as the rotation speed of the first impeller.

  Another aspect of the present invention is a method for suspending a pump device arranged in the middle of a conduit through which a liquid flows, which has a first pump for increasing the pressure of the liquid and a mirror image structure of the first pump. A step of placing a pump device having a second pump in the middle of the conduit, connecting a plurality of drones to the conduit, and causing the plurality of drones to fly, thereby suspending the pump device together with the conduit. The first pump has a first impeller and a first driving device that rotates the first impeller, and the second pump includes a second impeller and the second impeller. A second drive unit for rotating the first pump and the second pump, the first pump and the second pump are arranged in series in the flow direction of the liquid, and the second impeller of the second pump is The suspension method is characterized in that the first pump is rotated in a direction opposite to the first impeller at the same rotation speed as the rotation speed of the first impeller.

A preferable aspect of the present invention is characterized in that the rotation speed of the second impeller is adjusted by a rotation speed adjuster connected to the second driving machine.
In a preferred aspect of the present invention, the second pump is connected to the first pump via a connecting tool.
In a preferred aspect of the present invention, the first pump further includes a first pump casing that accommodates the first impeller and the first driving machine, and the second pump includes the second impeller and the second impeller. It further has a 2nd pump casing which stores the 2nd above-mentioned drive machine, and the 2nd pump casing is connected with the 1st pump casing via the connecting tool.
In a preferred aspect of the present invention, the first pump further includes a first pump casing that accommodates the first impeller and the first driving machine, and the second pump includes the second impeller and the second impeller. It further has a 2nd pump casing which stores the 2nd above-mentioned drive machine, The 1st pump casing and the 2nd pump casing are integrated as one integrated pump casing, It is characterized by the above-mentioned.
In a preferred aspect of the present invention, the first pump has a first pump casing that accommodates the first impeller, and the first driver is arranged outside the first pump casing. The second pump has a second pump casing that accommodates the second impeller, and the second driver is arranged outside the second pump casing. Is connected to the first driver via the connecting tool.

In a preferred aspect of the present invention, each of the first drive machine and the second drive machine is an electric motor.
In a preferred aspect of the present invention, the liquid is a fire extinguishing liquid, and the conduit is a fire extinguishing hose.

  Another aspect of the present invention is a pump device arranged in the middle of a conduit connected to a plurality of drones, the first pump for increasing the pressure of the liquid flowing through the conduit, and the first pump. A second pump having a mirror image structure, wherein the first pump has a first impeller and a first drive unit that rotates the first impeller, and the second pump is a second pump. An impeller and a second driving machine for rotating the second impeller, wherein the first pump and the second pump are arranged in mirror symmetry with respect to the central axis of the conduit, The second impeller of the second pump is rotated in the opposite direction to the first impeller of the first pump at a rotation speed that is the same as the rotation speed of the first impeller. It is a pump device.

  Another aspect of the present invention is a pump device arranged in the middle of a conduit connected to a plurality of drones, the first pump for increasing the pressure of the liquid flowing through the conduit, and the first pump. A second pump having a mirror image structure, wherein the first pump has a first impeller and a first drive unit that rotates the first impeller, and the second pump is a second pump. An impeller and a second drive device for rotating the second impeller are provided, and the first pump and the second pump are arranged in series in the flow direction of the liquid, and The second impeller of the two-pump is rotated in the opposite direction to the first impeller of the first pump at the same rotation speed as the rotation speed of the first impeller. Is.

A preferred aspect of the present invention is characterized in that the second pump further includes a rotation speed adjuster that is connected to the second drive machine and adjusts a rotation speed of the second impeller.
A preferred aspect of the present invention is characterized in that the pump device further includes a connector for connecting the first pump and the second pump to each other.
In a preferred aspect of the present invention, the first pump further includes a first pump casing that accommodates the first impeller and the first driving machine, and the second pump includes the second impeller and the second impeller. It further has a 2nd pump casing which stores the 2nd above-mentioned drive machine, and the above-mentioned connecting tool connects the 1st pump casing and the 2nd pump casing mutually.
In a preferred aspect of the present invention, the first pump further includes a first pump casing that accommodates the first impeller and the first driving machine, and the second pump includes the second impeller and the second impeller. It further has a 2nd pump casing which stores the 2nd above-mentioned drive machine, The 1st pump casing and the 2nd pump casing are integrated as one integrated pump casing, It is characterized by the above-mentioned.
In a preferred aspect of the present invention, the first pump has a first pump casing that accommodates the first impeller, and the first driver is arranged outside the first pump casing. The second pump has a second pump casing that accommodates the second impeller, and the second driver is arranged outside the second pump casing. Is connected to the first driver via the connecting tool.

A preferred aspect of the present invention is characterized in that each of the first drive machine and the second drive machine is an electric motor.
In a preferred aspect of the present invention, the liquid is a fire extinguishing liquid, and the conduit is a fire extinguishing hose.

  According to the present invention, the torque acting on the conduit by the rotation of the first impeller of the first pump can be canceled by the torque acting on the conduit by the rotation of the second impeller of the second pump. As a result, twisting of the conduit in which the pump device is arranged can be prevented.

FIG. 1 is a schematic diagram showing how a fire occurred in a high-rise building is extinguished by using a fire hose in which a pump device according to an embodiment is arranged. FIG. 2 is an enlarged schematic view of the pump device shown in FIG. FIG. 3 is a schematic diagram showing a modified example of the pump device shown in FIG. FIG. 4 is a schematic view showing another modified example of the pump device shown in FIG. FIG. 5 is a schematic view showing still another modified example of the pump device shown in FIG. FIG. 6 is a schematic diagram showing a modified example of the pump device shown in FIG. FIG. 7: is a schematic diagram which shows the modification of the pump apparatus shown in FIG. FIG. 8 is a schematic view showing another modified example of the pump device shown in FIG. FIG. 9: is a schematic diagram which shows an example of the conventional pump apparatus arrange|positioned in the middle of a conduit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 8, the same or corresponding components are designated by the same reference numerals, and duplicated description will be omitted.
FIG. 1 is a schematic diagram showing how a fire occurred in a high-rise building is extinguished using a fire hose in which a pump device according to an embodiment is arranged. FIG. 1 illustrates a fire extinguishing system 100 including a fire hose 10 and a pump device 40 arranged in the middle of the fire hose 10. The fire extinguishing system 100 extinguishes a fire in a high-rise building 105 such as a high-rise building. Used to do.

  As shown in FIG. 1, a fire extinguishing system 100 includes a fire extinguishing hose (conduit) 10 having a nozzle 11 for injecting a fire extinguishing liquid, a fire engine (liquid delivery device) 2 connected to the fire extinguishing hose 10, and a cable 4 A plurality of drones 1 and 6 connected in series with each other, and a power supply device 3 that supplies power or fuel for flying the plurality of drones 1 and 6 to the plurality of drones 1 and 6 via a wired cable 4. Contains. In the present embodiment, the plurality of drones includes the top drone 1 connected to the nozzle 11 and at least one (three in FIG. 1) relay drone 6. The top drone 1 and the relay drone 6 are connected in series by a wired cable 4. That is, the top drone 1 and the relay drone 6 are connected in a chain by a plurality of wired cables 4.

  The top drone 1 is connected to the nozzle 11 of the fire extinguishing hose 10 via a suspending tool 21 such as a wire. Further, the top drone 1 has a rotary vane 1R, and the rotary vane 1R functions as a thrust generation mechanism that generates a thrust to fly the top drone 1. In one embodiment, the hanger 21 may be omitted and the nozzle 11 may be directly connected to the top drone 1.

  Each relay drone 6 is connected to the middle of the fire hose 10 via a connecting tool 17 such as a wire. Each relay drone 6 also has a rotary wing 6R, and the rotary wing 6R functions as a thrust generation mechanism that generates thrust to fly the relay drone 6. As described above, the fire hose 10 which is a conduit for the fire extinguishing liquid is connected to the plurality of drones (that is, the top drone 1 and the relay drone 6). When the plurality of drones 1 and 6 are flown, the fire hose 10 is suspended on the plurality of drones 1 and 6.

  The power supply device 3 shown in FIG. 1 includes a power supply 12. The type of the power source 12 is arbitrary, and for example, any type of power source such as a battery, a storage battery, a condenser, and a fuel cell can be mounted on the power supply device 3. In the illustrated example, the power supply device 3 is housed in the fire engine 2. In one embodiment, a commercial power source (not shown) may be connected to the power supply 3. In this case, the electric power supplied from the commercial power supply is supplied to the top drone 1 and each relay drone 6 via the power supply device 3 and the wired cable 4. Alternatively, a power generator (not shown) may be installed and power may be supplied from the power generator to the power supply device 3.

  In the illustrated example, the power supply device 3 is housed in the fire engine 2, but the present embodiment is not limited to this example. That is, the power supply device 3 may be arranged outside the fire engine 2 (for example, in the vicinity of the fire engine 2). In this case, the power generation device arranged near the fire engine 2 may be used as the power supply device 3.

  Further, the fire extinguishing system 100 includes a control device 8 that controls the operations of the top drone 1 and the relay drones 6, and the operation of the power supply device 3. The control device 8 may be, for example, a pilot operated by a human operator, or a computer that stores a program for controlling the operations of the top drone 1 and each relay drone 6. .. The top drone 1 and each relay drone 6 operate wirelessly based on a control signal transmitted from the control device 8. In one embodiment, the controller 8 may send a control signal to the top drone 1 and each relay drone 6 via the wired cable 4. In the illustrated example, the control device 8 is also housed in the fire truck 2. In one embodiment, the controller 8 may be located outside the fire truck 2 (eg, near the fire truck 2).

  The fire engine 2 shown in FIG. 1 functions as a liquid delivery device that supplies the fire extinguishing liquid to the fire extinguishing hose 10. The fire engine 2 has a pump (not shown) for pumping the fire extinguishing liquid. Examples of the fire extinguishing liquid include water and chemical fire extinguishing agents. In the present embodiment, the fire extinguishing liquid is water stored in the water storage tank 60. When the fire extinguishing liquid is water, the fire engine 2 may have a tank for storing the water, or may be connected to a fire hydrant (not shown). When the extinguishing liquid is a chemical extinguishing agent, the fire truck 2 has a tank for storing the chemical extinguishing agent.

  Although not shown, a liquid sending device that supplies the fire extinguishing liquid to the fire extinguishing hose 10 may be arranged outside (for example, in the vicinity) of the fire engine 2 and the liquid sending device may be connected to the fire engine 2. Such a liquid feeding device is, for example, a pump device capable of feeding water stored in the water tank 60 under pressure. Alternatively, the fire engine 2 may be omitted, and a liquid delivery device such as a pump device may be directly connected to the water tank 60 or the fire hydrant. When the fire engine 2 is omitted, the power supply device 3 and the control device 8 are preferably arranged in the vicinity of the liquid delivery device.

  According to the fire extinguishing system 100 shown in FIG. 1, the fire extinguishing hose 10 is suspended by the top drone 1 and each relay drone 6 which are unmanned vehicles. Further, the nozzle 11 of the fire extinguishing hose 10 connected to the top drone 1 can be transported to the vicinity of the place where the fire occurs. Therefore, fire fighting activities can be carried out safely and promptly. Furthermore, since power is constantly supplied to the top drone 1 and each relay drone 6 from the power supply device 3 via the wired cable 4, it is not necessary to mount a power source on the top drone 1 and each relay drone 6. Therefore, since the top drone 1 and each relay drone 6 have no restrictions on the flight time, the top drone 1 and each relay drone 6 can be flown until the fire is completely extinguished.

  Further, the control device 8 controls the operation of the top drone 1 and the operation of each relay drone 6 independently of each other. Therefore, the control device 8 can cause the top drone 1 and each relay drone 6 connected in series by the wired cable 4 to function as if they were one multi-joint robot arm. As a result, the fire extinguishing hose (conduit) 10 and the wire cable 4 do not get caught or entangled with a natural object (for example, wood) or an artificial object (for example, an electric wire).

  In the fire extinguishing system 100 shown in FIG. 1, the thrust generating mechanism of the top drone 1 is the rotor 1R, but the present embodiment is not limited to this example. For example, the top drone 1 may have a rotor (not shown) that is rotated by electric power, instead of the rotor 1R. Alternatively, the top drone 1 may have an internal combustion engine (not shown) that rotates the rotor 1R or the rotor. In this case, the power supply device 3 includes a pump device for supplying fuel to the internal combustion engine of the top drone 1. Further, the thrust generating mechanism of the top drone 1 may be an engine (not shown) such as a jet engine, a gas rocket engine, a solid rocket engine, a liquid rocket engine, or a pressurized fluid (for example, compressed air, pressurized water). And the like) may be a jet nozzle (not shown) that jets downward. When the thrust generating mechanism of the top drone 1 is an engine, the power supply device 3 includes a pump device for supplying fuel to the top drone 1, and when the thrust generating mechanism of the top drone 1 is an injection nozzle, power supply is performed. The device 3 includes a pump device for supplying a pressurized fluid to the top drone 1.

  Similarly, the thrust generation mechanism of the relay drone 6 may be a rotor, an engine, or an injection nozzle. Furthermore, the thrust generation mechanism of the relay drone 6 may be the same as or different from the thrust generation mechanism of the top drone 1. Naturally, the thrust generation mechanisms of the relay drones 6 may be the same as or different from each other.

  In one embodiment, the plurality of wired cables 4 and the power supply device 3 may be omitted, and the top drone 1 and each relay drone 6 may be equipped with a power source or a power source such as a fuel tank. In this case, after the fire extinguishing activity is carried out for a predetermined time, the top drone 1 and each relay drone 6 are collected on the ground, and the power source is replaced. Alternatively, when the power source is a power source, the power source may be charged. When the power source is a fuel tank, the fuel tank is replenished with fuel.

  As shown in FIG. 1, a pump device (relay pump device) 40 is arranged in the middle of the fire hose (conduit) 10. The pump device 40 is used to increase the pressure of the fire extinguishing liquid flowing in the fire extinguishing hose 10 in order to reliably reach the fire occurrence location. In the illustrated example, one pump device 40 is arranged in the middle of the fire hose 10, but a plurality of pump devices 40 may be arranged in the middle of the fire hose 10. As described above, the fire hose 10 is suspended by the flying drones 1 and 6. Since the pump device 40 is arranged in the middle of the fire hose 10, when the plurality of drones 1 and 6 are flown, the pump device 40 is suspended by the plurality of drones 1 and 6 together with the fire hose 10.

  FIG. 2 is an enlarged schematic view of the pump device 40 shown in FIG. As shown in FIG. 2, the pump device 40 has a first pump 50 and a second pump 70. The fire hose 10 branches into two branch pipes BP1 and BP2 on the upstream side of the pump device 40 in the flow direction of the fire extinguishing liquid (liquid) in the fire hose 10, and the first pump 50 and the second pump 70 are separated from each other. , Are respectively arranged in the branch pipes BP1 and BP2. The branch pipes BP1 and BP2 join together on the downstream side of the pump device 40. In the present embodiment, the first pump 50 and the second pump 70 are arranged in parallel in the flow direction of the fire extinguishing liquid in the fire extinguishing hose 10. In the following description, the branch pipe BP1 may be referred to as “first branch pipe BP1”, and the branch pipe BP2 may be referred to as “second branch pipe BP2”.

  The first pump 50 includes a first impeller 52 and a first driver 51 that rotates the first impeller 52. In the example shown in FIG. 2, the first impeller 52 is fixed to the tip of the rotating shaft of the first driving machine 51. When the first driving machine 51 is driven, the first impeller 52 fixed to the rotation shaft of the first driving machine 51 rotates in a predetermined rotation direction (see arrow R1 in FIG. 2). In the present embodiment, the first driver 51 is an electric motor, and a power line (not shown) for supplying power to the first driver 51 is connected to the first driver 51. In one embodiment, the first driving machine 51 may be an internal combustion engine that rotates the impeller 52 or a gas turbine that rotates the impeller 52. When the first driver 51 is an internal combustion engine, fuel is supplied to the first driver 51. When the first driver 51 is a gas turbine, gas is supplied to the first driver 51.

  In the illustrated example, the first pump 50 further includes a first pump casing 57 that houses the first impeller 52 and the first driver 51. The first pump casing 57 is arranged in the middle of the first branch pipe BP1.

  The first drive unit 51 is housed in a first drive unit casing 53 having a liquid-tight structure so that the fire extinguishing liquid flowing in the first pump casing 57 does not reach the first drive unit 51. In the present embodiment, the first driver casing 53 is fixed to the inner surface of the first pump casing 57 by a plurality of first fixtures (eg, ribs) 55 attached to the outer surface of the first driver casing 53. It

  When the first driving device 51 is driven and the first impeller 52 is rotated in the direction of the arrow R1, the pressure of the liquid flowing through the first branch pipe BP1 increases. On the other hand, when the first impeller 52 rotates, the fire hose 10 is twisted in the direction opposite to the arrow R1. Therefore, the pump device 40 has the second pump 70 arranged in the branch pipe BP2 and having the mirror image structure of the first pump 50 in order to cancel the torque acting on the fire extinguishing hose 10 by the rotation of the first impeller 52. ..

  In the present specification, the “mirror image structure” refers to a relationship between two objects that are completely plane-symmetric. That is, the description “the second pump 70 has a mirror image structure of the first pump 50” has a structure obtained by the second pump 70 reflecting the structure of the first pump 50 on a plane mirror, In other words, it means having a structure that is completely plane-symmetrical to the structure of the first pump 50 with respect to the plane mirror. In this case, each constituent element of the second pump 70 (for example, a second impeller 72, a second driver 71, a second pump casing 77, etc. described later) corresponds to a corresponding constituent element of the first pump 50 (for example, The first impeller 52, the first driver 51, the first pump casing 57, etc.) have the same size, but have a completely plane-symmetrical structure.

  As shown in FIG. 2, the first pump 50 and the second pump 70 having a mirror image structure of the first pump 50 are arranged in mirror symmetry with respect to the central axis CL of the fire extinguishing hose (conduit) 10. The first branch pipe BP1 and the second branch pipe B are also mirror-symmetrical with respect to the central axis line CL of the fire extinguishing hose (conduit) 10.

  The second pump 70 has a second impeller 72 having a mirror image structure of the first impeller 52, a second impeller 72 having a mirror image structure of the first driving device 71, and rotating the second impeller 72, Equipped with. Further, the second pump 70 includes a first pump casing 57 and a second pump casing 77 having a mirror image structure. The second pump casing 77 is arranged in the middle of the second branch pipe BP2, and the second impeller 72 and the second driver 71 are housed in the second pump casing 77. The second impeller 72 is fixed to the tip of the rotation shaft of the second drive unit 71, and is rotated in the direction opposite to the rotation direction R1 of the first impeller 52 (see arrow R2 in FIG. 2). It rotates at the same rotation speed as the rotation speed of. The second driver 71 is an electric motor, and a power line (not shown) for supplying power to the second driver 71 is connected to the second driver 71. The distance D1 from the central axis CL to the rotation axis of the first drive machine 51 is equal to the distance D2 from the central axis CL to the rotation axis of the second drive machine 71. Similar to the first electric motor 51, the second electric motor 71 may be an internal combustion engine that rotates the second impeller 72 or a gas turbine that rotates the second impeller 72.

  Further, the second drive unit 71 is housed in the second drive unit casing 73 having a liquid-tight structure so that the fire extinguishing liquid flowing in the second pump casing 77 does not reach the second drive unit 71. The second driver casing 73 also has a mirror image structure of the first driver casing 53 of the first pump 50. In the present embodiment, the second driver casing 73 is fixed to the inner surface of the second pump casing 77 by a plurality of second fixtures (for example, ribs) 75 attached to the outer surface of the second driver casing 73. ing.

  The second pump 70 is preferably connected to the first pump 50 by at least one connector 47. In the present embodiment, the connector 47 is two plate members (for example, flanges) extending from the upper surface and the lower surface of the second pump casing 77 to the upper surface and the lower surface of the first pump casing 57, respectively. In one embodiment, the connector 47 may be a rod-shaped member that extends from the side surface of the second pump casing 77 to the side surface of the first pump casing 57. In this case, one rod-shaped member may connect the second pump casing 77 to the first pump casing 57, or a plurality of rod-shaped members may connect the second pump casing 77 to the first pump casing 57. ..

  When the second driver 71 is driven, the second impeller 72 rotates in the direction of arrow R2. The rotation direction R2 of the second impeller is opposite to the rotation direction R1 of the first impeller 52. By rotating the second impeller 72, the pressure of the fire extinguishing liquid flowing through the second branch pipe BP2 increases.

  The rotation speed of the second impeller 72 is set to be the same as the rotation speed of the first impeller 52. Therefore, the lift of the second pump 70 is the same as the lift of the first pump 50. In one embodiment, the first driver 51 and the second driver 71 may be connected to the controller 8 (see FIG. 1). In this case, the control device 8 controls the operations of the first drive machine 51 and the second drive machine 71 so that the rotation speed of the first impeller 52 and the rotation speed of the second impeller 72 are the same. To do.

  According to the present embodiment, the second pump 70 has a mirror image structure of the first pump 50, and the first pump 50 and the second pump 70 are arranged in mirror symmetry with respect to the central axis CL of the fire hose 10. It Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50. Therefore, the torque generated by the rotation of the second impeller 72 is the same as the torque generated by the rotation of the first impeller 52, and acts on the fire hose 10 in the opposite direction to the torque. Therefore, the torque acting on the fire extinguishing hose 10 by the rotation of the first impeller 52 is canceled by the torque acting on the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  As shown in FIG. 2, the second pump 70 may include a rotation speed adjuster 76 that is connected to the second driving machine 71 and adjusts the rotation speed of the second impeller 72. Furthermore, the first pump 50 may include a rotation speed adjuster 56 that is connected to the first driving machine 51 and adjusts the rotation speed of the first impeller 52. In the following description, the rotation speed adjuster 56 may be referred to as a "first rotation speed adjuster 56", and the rotation speed adjuster 76 may be referred to as a "second rotation speed adjuster 76". The pump device 40 may include both the first rotation speed adjuster 56 and the second rotation speed adjuster 76, or may include either one of the rotation speed adjusters 56 and 76. .. In the example shown in FIG. 2, the first rotation speed adjuster 56 and the second rotation speed adjuster 76 are arranged in the first drive machine casing 53 and the second drive machine casing 73, respectively. The regulator 56 and/or the second speed regulator 76 may be arranged in the control device 8 (see FIG. 1).

  Further, in the present specification, when the pump device 40 has any one of the rotation speed regulators 56 and 76, the description that “the second pump 70 has a mirror image structure of the first pump 50 ”, “The second pump 70 includes the second speed regulator 76 (or does not include the speed regulator corresponding to the first speed regulator 56). It has a mirror image structure”.

  In the present embodiment, in order to prevent twisting of the fire extinguishing hose 10, the torque acting on the fire extinguishing hose 10 by the first pump 50 can be canceled by the torque acting on the fire extinguishing hose 10 by the second pump 70. is important. Therefore, the second pump 70 has a mirror image structure of the first pump 50, and the first pump 50 and the second pump 70 are arranged in mirror symmetry with respect to the central axis CL of the fire extinguishing hose 10.

  However, a manufacturing error and an assembly error may occur between the first pump 50 and the second pump 70. Therefore, even if the rotation speed of the second pump is set or controlled to be the same as the rotation speed of the first pump, the magnitude of the torque acting on the fire extinguishing hose 10 by the second pump 70 is applied to the fire extinguishing hose 10 by the first pump 50. It may be slightly different from the magnitude of the torque that acts. Therefore, the first rotation speed adjuster 56 and/or the second rotation speed adjuster 76 finely adjusts the rotation speed of the first pump 50 and/or the second pump 70, so that the fire hose 10 is twisted. It is preferable to prevent this. In the present specification, the description that “the rotation speed of the second pump 70 is the same as the rotation speed of the first pump 50” means that the first rotation speed regulator 56 and/or the second rotation speed regulator 76 It is a concept including fine adjustment of the rotation speed of the first pump 50 and/or the second pump 70.

  The first fixture 55 of the first pump 50 preferably has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. By the first fixture 55 and the second fixture 75 as described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced.

  FIG. 3 is a schematic diagram showing a modified example of the pump device 40 shown in FIG. The configuration of this embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 2, and thus the duplicated description thereof will be omitted.

  The pump device 40 shown in FIG. 3 includes an integrated pump casing 90 in which the first pump casing 57 of the first pump 50 and the second pump casing 77 of the second pump 70 are integrated. More specifically, the integrated pump casing 90 has a partition 91 that partitions the integrated pump casing 90 into two chambers, and one chamber partitioned by the partition 91 has a first impeller 52 and a first impeller 52. The first pump casing 57 that houses the first driving machine 51 that rotates the impeller 52 is configured, and the other chamber houses the second impeller 72 and the second driving machine 71 that rotates the second impeller 72. It constitutes the second pump casing 77. In the present embodiment, the partition wall 91 extends from the upper wall to the bottom wall of the integrated pump casing 90, and the two chambers (that is, the first pump casing 57 and the second pump casing 77) are connected to the fire extinguisher hose 10 to extinguish the fire. They are arranged in parallel in the liquid flow direction.

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50, and the first pump 50 and the second pump 70 are arranged in mirror symmetry with respect to the central axis CL of the fire extinguishing hose 10. Therefore, as shown in FIG. 3, when the plurality of drones 1 and 6 suspend the fire hose 10 so that the fire hose 10 extends in the vertical direction, the partition wall 91 is located on the central axis CL. The distance D1 from the partition wall 91 (that is, the central axis CL) to the rotation axis of the first driving device 51 is equal to the distance D2 from the partition wall 91 (that is, the central axis line CL) to the rotation shaft of the second driving device 71. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  Further, also in this embodiment, it is preferable that the first fixture 55 of the first pump 50 has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. As described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced by the first fixture 55 and the second fixture 75 as described above.

  FIG. 4 is a schematic diagram showing another modification of the pump device 40 shown in FIG. The configuration of this embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 2, and thus the duplicated description thereof will be omitted.

  In the pump device 40 shown in FIG. 4, the first pump casing 57 and the second pump casing 77 are omitted, and the first pump 50 and the second pump 70 are inserted into the branch pipes BP1 and BP2, respectively. .. More specifically, the first pump 50 includes a first impeller 52, a first driving machine 51 that rotates the first impeller 52, and a first driving machine casing 53 that houses the first driving machine 51. The first pump 50 is fixed to the inner surface of the first branch pipe BP1 by a plurality of fixing members (for example, ribs) 55 attached to the outer surface of the first drive unit casing 53. Similarly, the second pump 70 includes a second impeller 72, a second drive machine 71 that rotates the second impeller 72, and a second drive machine casing 73 that houses the second drive machine 71. The second pump 70 is fixed to the inner surface of the second branch pipe BP2 by a plurality of fixing members (for example, ribs) 75 attached to the outer surface of the second driver casing 73.

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50, and the first pump 50 and the second pump 70 are arranged in mirror symmetry with respect to the central axis CL of the fire extinguishing hose 10. Therefore, the distance D1 from the central axis CL to the rotation axis of the first drive machine 51 is equal to the distance D2 from the center axis CL to the rotation axis of the second drive machine 71. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented. Furthermore, since the pump device 40 according to the present embodiment does not have the first pump casing 57 and the second pump casing 77, it is possible to reduce the weight that the plurality of drones 1 and 6 bear.

  Also in this embodiment, the second pump 70 is preferably connected to the first pump 50 by at least one connector 47. The connector 47 shown in FIG. 4 penetrates the first drive unit casing 53, the first branch pipe BP1, the second branch pipe BP2, and the second drive unit casing 73, and the first drive unit 51 to the second drive unit are driven. It is a rod-shaped member that extends straight to the machine 71. In one embodiment, the connector 47 is a rod-shaped member that penetrates the first branch pipe BP1 and the second branch pipe BP2 and extends linearly from the first drive machine casing 53 to the second drive machine casing 73. Good.

  Further, also in this embodiment, it is preferable that the first fixture 55 of the first pump 50 has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. As described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced by the first fixture 55 and the second fixture 75 as described above.

  FIG. 5 is a schematic diagram showing still another modified example of the pump device 40 shown in FIG. The configuration of this embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 2, and thus the duplicated description thereof will be omitted.

  In the pump device 40 shown in FIG. 5, the first pump 50 has a suction port provided in the direction of the rotation axis of the first driving device 51 and a discharge port provided in the direction perpendicular to the rotation axis of the first driving device 51. It is a centrifugal pump. Similarly, the second pump 70 is also a centrifugal pump in which a suction port is provided in the direction of the rotation axis of the second driving device 71 and a discharge port is provided in the direction perpendicular to the rotation axis of the second driving device 71. .. The first pump casing 57 houses the first impeller 52 therein, and the first driver 51 is arranged outside the first pump casing 57. The rotary shaft of the first drive unit 51 penetrates the bottom wall of the first pump casing 57 and extends to the first impeller 52 arranged in the first pump casing 57. When driven, the first impeller 52 rotates. Similarly, the second pump casing 77 houses the second impeller 72 therein, and the second driver 71 is arranged outside the second pump casing 77. The rotary shaft of the second drive unit 77 penetrates the bottom wall of the second pump casing 77 and extends to the second impeller 72 arranged in the second pump casing 77, and the second drive unit 71 is connected to the rotary shaft of the second drive unit 71. When driven, the second impeller 72 rotates.

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50. Further, the first pump 50 and the second pump 70 are arranged in mirror symmetry with respect to the central axis line CL of the fire extinguishing hose 10. Therefore, the direction of the fire extinguishing liquid discharged from the first pump 50 and the direction of the fire extinguishing liquid discharged from the second pump 70 are opposite to the central axis CL. The distance D1 from the central axis CL to the rotation axis of the first drive machine 51 is equal to the distance D2 from the central axis CL to the rotation axis of the second drive machine 71. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50. The second pump 70 is preferably connected to the first pump 50 by at least one connector 47.

  The first pump casing 57 of the first pump 50 is preferably a spiral casing (volute casing) that houses the first impeller 52. Similarly, the second pump casing 77 of the second pump 70 is preferably a spiral casing (volute casing) that houses the second impeller 72. As described above, since the second pump 70 has the mirror image structure of the first pump 50, the second pump casing 77 which is the spiral casing has the same size as the first pump casing 57 which is the spiral casing. , Having a completely plane-symmetric structure. Furthermore, since the first pump 50 and the second pump 70 are mirror-symmetrical with respect to the central axis CL, the direction of the extinguishing liquid discharged from the first pump casing 57, which is a spiral casing, is the spiral casing. The direction of the fire extinguishing liquid discharged from the second pump casing 77 is the opposite direction.

  The connector 47 shown in FIG. 5 is one rod-shaped member that extends linearly from the first drive machine 51 to the second drive machine 71. In one embodiment, the connector 47 may be a plurality of rod-shaped members that extend linearly from the first drive machine 51 to the second drive machine 71.

  Although not shown, the pump device 40 may include a first drive machine casing that houses the first drive machine 51 and a second drive machine casing that houses the second drive machine. In this case, the at least one connector 47 may connect the first drive machine casing and the second drive machine casing to each other, or may penetrate the first drive machine casing and the second drive machine casing to The first driver 51 and the second driver 71 may be connected to each other.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  FIG. 6 is a schematic diagram showing a modified example of the pump device 40 shown in FIG. The configuration of this embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 2, and thus the duplicated description thereof will be omitted.

  In the pump device 40 shown in FIG. 6, the first pump 50 and the second pump 70 having a mirror image structure of the first pump 50 are arranged in series in the flow direction of the fire extinguishing liquid in the fire extinguishing hose 10. .. The second pump 70 is arranged downstream of the first pump 50. Also in this embodiment, the second pump 70 is preferably connected to the first pump 50 by at least one connector 47. The connector 47 shown in FIG. 6 is two plate members (for example, flanges) that extend from the side surface of the second pump casing 77 to the side surface of the first pump casing 57, respectively. In one embodiment, the connector 47 may be a rod-shaped member that extends from the lower surface of the second pump casing 77 to the upper surface of the first pump casing 57. In this case, one rod-shaped member may connect the second pump casing 77 to the first pump casing 57, or a plurality of rod-shaped members may connect the second pump casing 77 to the first pump casing 57. ..

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50. Similar to the embodiment shown in FIG. 2, the first driving machine 51 and the second driving machine 71 may be connected to the control device 8 (see FIG. 1). In this case, the control device 8 controls the operations of the first drive machine 51 and the second drive machine 71 so that the rotation speed of the first impeller 52 and the rotation speed of the second impeller 72 are the same. To do.

  Further, the pump device 40 may have both the first rotation speed adjuster 56 and the second rotation speed adjuster 76 described above, or may have either one of these rotation speed adjusters 56, 76. May be.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  Further, also in this embodiment, it is preferable that the first fixture 55 of the first pump 50 has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. As described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced by the first fixture 55 and the second fixture 75 as described above.

  FIG. 7 is a schematic diagram showing a modified example of the pump device 40 shown in FIG. The configuration of the present embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 6, and thus the duplicate description thereof will be omitted.

  The pump device 40 shown in FIG. 7 includes an integrated pump casing 90 in which the first pump casing 57 of the first pump 50 and the second pump casing 77 of the second pump 70 are integrated. More specifically, the integrated pump casing 90 has a partition 91 that partitions the integrated pump casing 90 into two chambers, and one chamber partitioned by the partition 91 has a first impeller 52 and a first impeller 52. The first pump casing 57 that houses the first driving machine 51 that rotates the impeller 52 is configured, and the other chamber houses the second impeller 72 and the second driving machine 71 that rotates the second impeller 72. It constitutes the second pump casing 77. In the present embodiment, the partition wall 91 extends from one side wall of the integrated pump casing 90 to the other side wall, and the two chambers (that is, the first pump casing 57 and the second pump casing 77) are disposed inside the fire hose 10. Are arranged in series in the flow direction of the fire extinguishing liquid.

  The partition wall 91 has a through hole (not shown) that allows the chamber forming the second pump casing 77 to communicate with the chamber forming the first pump casing 57. The fire extinguishing liquid whose pressure is increased by the first impeller 52 of the first pump 50 flows into the second pump casing 77 through the through hole formed in the partition wall 91. Then, the fire extinguishing liquid that has flowed into the second pump casing 77 is pressurized by the second impeller 72 of the second pump 70 and is discharged from the second pump casing 77.

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  Further, also in this embodiment, it is preferable that the first fixture 55 of the first pump 50 has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. As described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced by the first fixture 55 and the second fixture 75 as described above.

  FIG. 8 is a schematic diagram showing another modification of the pump device 40 shown in FIG. The configuration of the present embodiment that is not particularly described is the same as the configuration of the pump device 40 illustrated in FIG. 6, and thus the duplicate description thereof will be omitted.

  In the pump device 40 shown in FIG. 8, the first pump casing 57 and the second pump casing 77 are omitted, and the first pump 50 and the second pump 70 are inserted into the fire extinguishing hose 10, respectively. More specifically, the first pump 50 includes a first impeller 52, a first driving machine 51 that rotates the first impeller 52, and a first driving machine casing 53 that houses the first driving machine 51. The first pump 50 is fixed to the inner surface of the fire hose 10 by a plurality of fixtures (for example, ribs) 55 attached to the outer surface of the first driver casing 53. The second pump 70 is arranged on the downstream side of the first pump 50 in the flow direction of the fire extinguishing liquid in the fire extinguishing hose 10, and has a second impeller 72 and a second drive that rotates the second impeller 72. The machine 71 and the second drive machine casing 73 that houses the second drive machine 71. The second pump 70 is fixed to the inner surface of the fire extinguishing hose 10 by a plurality of fixing members (for example, ribs) 75 attached to the outer surface of the second driver casing 73.

  Also in this embodiment, the second pump 70 is preferably connected to the first pump 50 by at least one connector 47. The connecting tool 47 shown in FIG. 8 is a rod-shaped member having a substantially C-shaped vertical cross-sectional shape and extending from the first driving machine 51 to the second driving machine 71. In one embodiment, the connector 47 may be a rod-shaped member having a substantially C-shaped vertical cross-sectional shape and extending from the first drive machine casing 53 to the second drive machine casing 73.

  Also in this embodiment, the second pump 70 has a mirror image structure of the first pump 50. Further, the second impeller 72 of the second pump 70 rotates at the same rotation speed as the rotation speed of the first impeller 52 in the direction opposite to the rotation direction of the first impeller 52 of the first pump 50. Similar to the above-described embodiment, the first driving machine 51 and the second driving machine 71 may be connected to the control device 8 (see FIG. 1). In this case, the control device 8 controls the operations of the first drive machine 51 and the second drive machine 71 so that the rotation speed of the first impeller 52 and the rotation speed of the second impeller 72 are the same. To do.

  Even in the pump device 40 having such a configuration, the torque applied to the fire extinguishing hose 10 by the rotation of the first impeller 52 can be canceled by the torque applied to the fire extinguishing hose 10 by the rotation of the second impeller 72. As a result, twisting of the fire extinguishing hose (conduit) 10 in which the pump device 40 is arranged can be prevented.

  Further, also in this embodiment, it is preferable that the first fixture 55 of the first pump 50 has a function of a guide vane that reduces the swirling flow of the fire extinguishing liquid generated by the rotation of the first impeller 52. Similarly, the second fixture 75 of the second pump 70 preferably has a function of a guide vane that reduces the swirling flow of the extinguishing liquid generated by the rotation of the second impeller 72. As described above, the magnitude of the torque applied to the fire extinguishing hose 10 can be reduced by the first fixture 55 and the second fixture 75 as described above.

  Further, in the above-described embodiment, the pump device 40 arranged in the middle of the fire hose 10 has been described, but the pump device 40 can be arranged in the middle of any conduit suspended by a plurality of drones. For example, the pump device 40 may be located in the middle of a conduit for supplying water to a desired floor of a high rise building. Alternatively, the pump device 40 may be arranged in the middle of a conduit for supplying a liquid such as fuel or water to a ship floating on the river or the sea. In either case, the pump device 40 is suspended by the drones along with the conduit.

  The above-described embodiment is described for the purpose of enabling a person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above-described embodiment can be naturally made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Therefore, the present invention is not limited to the described embodiments, but should be the broadest scope according to the technical idea defined by the claims.

1 Top drone 2 Fire truck (liquid transfer device)
3 Power Supply Device 4 Wired Cable 6 Relay Drone 8 Control Device 10 Fire Hose (Conduit)
11 nozzle 12 power supply 17 connecting tool (wire)
21 Hanging equipment (wire)
40 pump device 47 coupling tool 50 1st pump 51 1st drive machine 52 1st impeller 56 (1st) rotation speed regulator 57 1st pump casing 70 2nd pump 71 2nd drive machine 72 2nd impeller 76 ( 2) Rotation speed regulator 77 Second pump casing 90 Integrated pump casing 91 Partition wall 100 Fire extinguishing system

Claims (18)

A method of suspending a pump device arranged in the middle of a conduit through which a liquid flows, comprising:
A pump device having a first pump for increasing the pressure of the liquid and a second pump having a mirror image structure of the first pump is disposed in the middle of the conduit,
Connecting a plurality of drones to the conduit,
Suspending the pump device with the conduit by flying the plurality of drones,
The first pump has a first impeller and a first driving machine that rotates the first impeller,
The second pump has a second impeller and a second driving machine that rotates the second impeller,
The first pump and the second pump are arranged in mirror symmetry with respect to the central axis of the conduit,
The second impeller of the second pump is rotated in the opposite direction to the first impeller of the first pump at the same rotation speed as the rotation speed of the first impeller. Suspension method. A method of suspending a pump device arranged in the middle of a conduit through which a liquid flows, comprising:
A pump device having a first pump for increasing the pressure of the liquid and a second pump having a mirror image structure of the first pump is disposed in the middle of the conduit,
Connecting a plurality of drones to the conduit,
Suspending the pump device with the conduit by flying the plurality of drones,
The first pump has a first impeller and a first drive machine that rotates the first impeller,
The second pump has a second impeller and a second drive machine that rotates the second impeller,
The first pump and the second pump are arranged in series in the flow direction of the liquid,
The second impeller of the second pump is rotated in the opposite direction to the first impeller of the first pump at the same rotation speed as the rotation speed of the first impeller. Suspension method.   The suspension method according to claim 1 or 2, wherein a rotation speed adjuster connected to the second drive machine adjusts a rotation speed of the second impeller.   The suspension method according to claim 1, wherein the second pump is connected to the first pump via a connecting tool. The first pump further has a first pump casing that accommodates the first impeller and the first driver,
The second pump further has a second pump casing that accommodates the second impeller and the second driver,
The suspension method according to claim 4, wherein the second pump casing is connected to the first pump casing via the connector. The first pump further has a first pump casing that accommodates the first impeller and the first driver,
The second pump further has a second pump casing that accommodates the second impeller and the second driver,
The suspension method according to any one of claims 1 to 3, wherein the first pump casing and the second pump casing are integrated as one integrated pump casing. The first pump has a first pump casing that houses the first impeller,
The first drive unit is arranged outside the first pump casing,
The second pump has a second pump casing that houses the second impeller,
The second driver is arranged outside the second pump casing,
The suspension method according to claim 4, wherein the second driver is connected to the first driver via the connector.   The said 1st drive machine and the said 2nd drive machine are each an electric motor, The suspension method as described in any one of Claim 1 thru|or 7 characterized by the above-mentioned.   9. The suspension method according to claim 1, wherein the liquid is a fire extinguishing liquid, and the conduit is a fire extinguishing hose. A pump device arranged in the middle of a conduit connected to a plurality of drones,
A first pump for increasing the pressure of the liquid flowing through the conduit; and a second pump having a mirror image structure of the first pump,
The first pump has a first impeller and a first driving machine that rotates the first impeller,
The second pump has a second impeller and a second drive machine that rotates the second impeller,
The first pump and the second pump are arranged in mirror symmetry with respect to the central axis of the conduit,
The second impeller of the second pump is rotated in the opposite direction to the first impeller of the first pump at a rotation speed that is the same as the rotation speed of the first impeller. Pump device. A pump device arranged in the middle of a conduit connected to a plurality of drones,
A first pump for increasing the pressure of the liquid flowing through the conduit; and a second pump having a mirror image structure of the first pump,
The first pump has a first impeller and a first driving machine that rotates the first impeller,
The second pump has a second impeller and a second drive machine that rotates the second impeller,
The first pump and the second pump are arranged in series in the flow direction of the liquid,
The second impeller of the second pump is rotated in the opposite direction to the first impeller of the first pump at the same rotation speed as the rotation speed of the first impeller. Pump device.   The pump device according to claim 10 or 11, wherein the second pump further comprises a rotation speed adjuster that is connected to the second drive machine and adjusts the rotation speed of the second impeller.   The pump device according to any one of claims 10 to 12, further comprising a connector that connects the first pump and the second pump to each other. The first pump further has a first pump casing that accommodates the first impeller and the first driver,
The second pump further has a second pump casing that accommodates the second impeller and the second driver,
14. The pump device according to claim 13, wherein the connector connects the first pump casing and the second pump casing to each other. The first pump further has a first pump casing that accommodates the first impeller and the first driver,
The second pump further has a second pump casing that accommodates the second impeller and the second driver,
The pump device according to any one of claims 10 to 12, wherein the first pump casing and the second pump casing are integrated as one integrated pump casing. The first pump has a first pump casing that houses the first impeller,
The first drive unit is arranged outside the first pump casing,
The second pump has a second pump casing that houses the second impeller,
The second driver is arranged outside the second pump casing,
14. The pump device according to claim 13, wherein the second driver is connected to the first driver via the connector.   The pump device according to any one of claims 10 to 16, wherein each of the first driving machine and the second driving machine is an electric motor.   The pump device according to any one of claims 10 to 17, wherein the liquid is a fire extinguishing liquid, and the conduit is a fire extinguishing hose.

Images