Manhole pump place remote type relief system

Abstract

To provide a manhole pump place remote type relief system that can properly manage a fuel remaining amount in a fuel tank even when a system is in operation.SOLUTION: A manhole pump place remote type relief system used in a manhole pump place comprising a sewage pump installed in a sewage tank and sucking in and discharging sewage comprises a reserve pump installed outside the sewage tank, a main fuel tank in which fuel is stored, a reserve fuel tank in which reserve fuel is stored, a main fuel remaining amount detection portion detecting a fuel remaining amount in the main fuel tank, a reserve fuel switching portion switching fuel to operate the reserve pump from fuel in the main fuel tank to fuel in the reserve fuel tank, a control portion performing control, and a communication portion performing communication, in which the control portion transmits, via the communication portion, information related to the fuel remaining amount in the main fuel tank detected by the main fuel remaining amount detection portion to a user device possessed by a user, and, when a fuel switching instruction is received via the communication portion, causes the reserve fuel switching portion to switch fuel.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a manhole pump station remote relief system. [Background technology]

[0002] Conventionally, manhole-type pumping stations (hereinafter referred to as "manhole pumping stations") installed at relay points of sewerage systems and the like have been known. A manhole pumping station is a simple relay pumping station in which a pump is installed inside a manhole. Various inventions have been made regarding such manhole pumping stations (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses technology relating to a disaster response manhole pump station backup system (hereinafter also referred to as the "backup system"), which is a system installed outside a manhole and powered by a gasoline engine, and which is temporarily set up to temporarily restore the sewage relay function when the manhole pump station is no longer functioning as a relay pump station due to a disaster or loss of power. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-75102 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the social situation when temporary restoration of the sewerage system using the backup system is necessary is often immediately after a heavy rain disaster or a major earthquake, and in such a situation, sewerage workers are busy with disaster restoration work. As a result, they have difficulty finding time to properly manage the remaining fuel level in the gasoline engine fuel tank. As a result, if the backup system continues to operate, there is a problem that the gasoline engine will run out of gasoline and stop, which can hinder temporary restoration using the backup system.

[0006] The present invention has been made in consideration of the above points, and aims to provide a manhole pump station remote relief system that can properly manage the remaining amount of fuel in the fuel tank even when the system is operating. [Means for solving the problem]

[0007] In order to achieve the above object, the manhole pumping station remote relief system of the present invention is a manhole pumping station remote relief system used in a manhole pumping station including a sewage tank, a sewage pump installed in the sewage tank for sucking in and discharging sewage, and a pressure pipe for transporting the sewage discharged from the sewage pump to the outside, and further including a backup pump installed outside the sewage tank for sucking in sewage in the sewage tank and discharging the sewage to the pressure pipe when the sewage pump stops, a main fuel tank for storing fuel for operating the backup pump, a spare fuel tank for storing spare fuel for operating the spare pump, and a pressure pipe for transporting the sewage discharged from the main fuel tank. The manhole pump station remote relief system comprises a main fuel remaining quantity detection unit that detects the amount of fuel remaining in the tank, a spare fuel switching unit that switches the fuel used to operate the spare pump from the fuel in the main fuel tank to the fuel in the spare fuel tank, a control unit that controls the manhole pump station remote relief system, and a communication unit that communicates with an external network, wherein the control unit transmits information related to the amount of fuel remaining in the main fuel tank detected by the main fuel remaining quantity detection unit to a user device provided by the user via the communication unit, and when a fuel switching instruction from the user is received via the communication unit, causes the spare fuel switching unit to switch the fuel used to operate the spare pump. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a manhole pump station remote relief system that can properly manage the remaining amount of fuel in the fuel tank even when the system is in operation. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing an example of the overall configuration of a conventional manhole pump station. [Figure 2] FIG. 1 is a top view of a manhole pump station remote relief system according to this embodiment. [Figure 3] FIG. 1 is a diagram showing an example of the configuration of a manhole pump station remote relief system according to this embodiment. [Figure 4] FIG. 2 is a diagram illustrating an example of the device configuration of a backup control device according to the present embodiment. [Figure 5] FIG. 5 is a view of the engine pump and its surroundings in FIG. 4 as seen from direction B. [Figure 6] FIG. 2 is a diagram illustrating an example of a functional configuration of a backup control device according to the present embodiment. [Figure 7] FIG. 2 is a diagram illustrating an example of a functional configuration of an external server according to the present embodiment. [Figure 8] FIG. 10 is a diagram showing an example of a display screen created by an external server according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described. Prior to describing the embodiment of the present invention, a conventional manhole pumping station will be described.

[0011] [Conventional manhole pump station] 1 is a diagram showing an example of the overall configuration of a conventional manhole pumping station, and shows an underground cross-sectional view of a manhole pumping station 100.

[0012] The conventional manhole pumping station 100 shown in Figure 1 is composed of a sewage tank (manhole well) 61, a sewage pump 62, an inlet pipe 63, a pressure pipe 64, a riser pipe 65, a check valve 66, and a gate valve 67. The power source for driving the sewage pump 62 is not shown. This manhole pumping station 100 is installed at a relay point between sewer pipes and water distribution pipes.

[0013] In the conventional manhole pump station 100 shown in Figure 1, wastewater and sewage flow into a sewage tank 61 through an inlet pipe 63, and a sewage pump 62 sucks in the wastewater and sewage from the sewage tank 61. The sewage sucked in by the sewage pump 62 flows through a riser pipe 65 extending vertically, a check valve 66 for preventing backflow, and a gate valve 67 used to block the fluid, before being sent to a pressure pipe 64.

[0014] The following is a supplementary explanation of the pressure pipe 64. The pressure pipe 64 is located at a higher position than the inlet pipe 63, and is a hollow pipe for conveying wastewater and sewage that has been pressurized by the wastewater pump 62. The pressure pipe 64 has an inverted T-shaped horizontal section 64A and a straight pipe section 64B that is connected to the horizontal section 64A.

[0015] The horizontal section 64A is a section into which wastewater and sewage that has been pressurized by the wastewater pump 62 flows in, and specifically, the wastewater and sewage that has been discharged by the wastewater pump 62 and flowed through the riser pipe 65, check valve 66, and gate valve 67 flows in. The fluid that flows into this horizontal section 64A is sent to the straight pipe section 64B.

[0016] [Configuration example of a manhole pump station remote relief system] Fig. 2 is a top view of the manhole pump station remote relief system according to the present embodiment. Fig. 3 is a diagram showing an example of the configuration of the manhole pump station remote relief system according to the present embodiment.

[0017] FIG. 3 shows an underground cross-sectional view (cross-sectional view at AA) of the manhole pumping station 10 of FIG.

[0018] 2 and 3 is composed of a suction hose 1, a backup control device 2, a discharge hose 3, a pipe unit 4, a pressure pipe 5, an electrode rod 6, a sewage tank (manhole well) 7, a sewage pump 8, and an inlet pipe 9. This manhole pump station 10 is installed at a relay point between sewer pipes and water distribution pipes.

[0019] Among the components shown in Figures 2 and 3, the suction hose 1, backup control device 2, discharge hose 3, pipe unit 4, and electrode rod 6 will be collectively referred to as a manhole pump station remote relief system 20 (hereinafter simply referred to as "relief system 20"). The relief system 20 is a backup system that enables rapid temporary restoration while the manhole pump station 10 is stopped due to a disaster, malfunction, or the like. Each component will be described below.

[0020] As shown in Figures 2 and 3, the suction hose 1 is a hollow tube with one end connected to the backup control device 2 and the other end suspended in the sewage tank 7 for sucking in (suctioning) sewage near the sewage pump 8 in the sewage tank 7.

[0021] The backup control device 2 is a device that is temporarily installed outside when the sewage pump 8 stops, and that sucks and discharges sewage from the sewage tank 7 to temporarily restore the manhole pump station 10. Details of the backup control device 2 will be described later using Figures 4 to 6.

[0022] The discharge hose 3 is a hollow tube having one end connected to the backup control device 2 and the other end suspended in the sewage tank 7 and connected to the pipe unit 4, for discharging the sewage sucked by the suction hose 1 into the pressure pipe 5 via the pipe unit 4.

[0023] The pipe unit 4 is installed in advance so that it can be attached and detached to the pressure pipe 5, and has a connection part 41 at the upper end to which the discharge hose 3 can be connected so that it can communicate. This pipe unit 4 is manufactured in advance as a standard product in a factory or the like. This pipe unit 4 and discharge hose 3 are connected at the connection part 41 via, for example, a fitting elbow (not shown in detail) that is a one-touch joint. By using a fitting elbow as the connection part 41, the pipe unit 4 and discharge hose 3 can be easily connected even if they are pipes with different diameters, and this provides excellent ease of use and responsiveness in emergencies.

[0024] This pipe unit 4 has a vertical straight pipe section 42 extending vertically from a connection section 41 at the upper end, and a horizontal section 43. In particular, the horizontal section 43 has a shape similar to that of the horizontal section 64A (see FIG. 1), and is configured in an inverted T shape. In other words, the pipe unit 4 is configured in a shape that can be substituted for the horizontal section 64A of the pressure pipe 64.

[0025] In the manhole pump station 10 according to this embodiment, the horizontal section 64A (see FIG. 1) of the conventional pressure pipe 64 is replaced with the horizontal section 43 of the pipe unit 4. As a result, the pipe unit 4 is connected to the pressure pipe 5. This enables the pressure pipe 5 to receive sewage that has been compressed by the engine pump 23 and flowed through the discharge hose 3 and the pipe unit 4.

[0026] The pressure pipe 5 is a straight pipe section connected to the horizontal section 43 of the pipe unit 4, and is a hollow pipe body for conveying wastewater / sewage that has been pressurized by the wastewater pump 8 or the backup control device 2 (specifically, the engine pump 23 in Figure 4, which will be described later).

[0027] The electrode rod 6 is fixed to the suction hose 1 and is a water level detection means for detecting the water level in the wastewater tank 7. When the electrode rod 6 detects the wastewater level, it emits a conduction signal and controls the backup control device 2 (specifically, the control device 22b in FIG. 4) by issuing an on / off command. When a start switch (not shown) is pressed to start the electrode rod 6 detecting the water level, the operation of the relief system 20 begins.

[0028] As shown in Figure 3, this electrode rod 6 includes an upper electrode rod 6a placed directly below the inlet pipe 9 and a lower electrode rod 6b installed at a position slightly above the end of the suction hose 1, both of which are fixed to the suction hose 1.

[0029] When the upper electrode 6a detects the water surface, the backup control device 2 (specifically, the engine pump 23 in FIG. 4) starts. On the other hand, when the lower electrode 6b detects the water surface, the backup control device 2 (engine pump 23) stops. In other words, the upper electrode 6a and the lower electrode 6b detect the start water level and stop water level of the backup control device 2 (engine pump 23), respectively.

[0030] Furthermore, if the start-up water level and stop water level of the backup control device 2 (engine pump 23) are detected using a float-type detector, debris may get tangled in the float, causing malfunction and loss of control. Therefore, detecting the water level using an electrode rod 6 and fixing the electrode rod 6 to the suction hose 1 has the advantage of reducing problems during operation.

[0031] The sewage pumps 8 are two pumps that are installed in the sewage tank 7 and that suck and discharge sewage from the sewage tank 7, each consisting of an integrated motor and pump. The power source and other components for driving the motors of the sewage pumps 8 are not shown in Figures 2 and 3.

[0032] As shown in Figure 3, the inlet pipe 9 is located slightly above the vertical center of the sewage tank 7 and is a hollow pipe that allows wastewater and sewage flowing from upstream to flow into the sewage tank 7.

[0033] With the above-described configuration, the manhole pumping station 10 according to this embodiment is additionally equipped with a relief system 20 consisting of a suction hose 1, a backup control device 2, a discharge hose 3, a pipe unit 4, and an electrode rod 6, compared to a conventional manhole pumping station 100 (see FIG. 1). This makes it possible to quickly carry out temporary restoration in an emergency when the manhole pumping station 10 is stopped due to a disaster such as an earthquake or an unexpected breakdown.

[0034] Furthermore, the function of the manhole pumping station 10 as a pumping station can be ensured, and overflow onto aboveground areas due to sewage retention in the sewer pipes can be prevented. Also, secondary damage such as sewerage blockage caused by sewage retention in the pipes resulting in the deposition of sewer residue and sludge in the pipes can be prevented. Furthermore, by simply restoring the function of the manhole pumping station 10, it is possible to avoid the huge construction costs involved in transporting the sewage using a vacuum truck or pumping it through a large-scale bypass.

[0035] In the above explanation, the backup control device 2 (particularly the engine pump 23 in Figure 4) is a temporary sewage pump for temporary restoration in the event of a power outage at the manhole pump station 10 due to a disaster or other reason, and the suction hose 1, discharge hose 3 and pipe unit 4 can be rephrased as piping for temporary restoration.

[0036] [Backup control device configuration example] Fig. 4 is a diagram showing an example of the device configuration of a backup control device according to this embodiment. Fig. 5 is a view of the periphery of the engine pump in Fig. 4 as seen from direction B. Note that components similar to those described above (Figs. 2 and 3) are given the same reference numerals and redundant explanations will be omitted as appropriate. The same applies hereinafter.

[0037] 4 and 5, the backup control device 2 includes a solar panel 21, a control panel 22, a solar battery 22a, a control device 22b, a communication device 22c, an engine pump 23, a main fuel tank 24, a spare fuel tank 25, a first fuel hose 26a, a second fuel hose 26b, a remaining fuel monitor 27, and a power valve 28. Note that the wiring between the devices is not shown.

[0038] The solar panel 21 is a power generation device that generates electricity using sunlight, and the electricity generated by the solar panel 21 is stored in the solar battery 22a.

[0039] The control panel 22 houses various electronic devices, such as a solar battery 22a, a control device 22b, and a communication device 22c, for controlling and operating the backup control device 2. The control panel 22 also has an operation panel (not shown) that allows the user to manually input various instructions, such as instructions to start and stop the engine pump 23 and to open and close the motor-operated valve 28.

[0040] The solar battery 22a is a storage battery that stores the power generated by the solar panel 21. The control device 22b is a device that performs various controls of the backup control device 2. The communication device 22c is a communication device such as a wireless LAN router that performs wireless communication with the external Internet.

[0041] The engine pump 23 is a standby pump for sewage that is temporarily installed outside for temporary restoration in the event that the sewage pump 8 (see Figure 2) stops. The engine pump 23 is a pump with a built-in engine that sucks in sewage from the sewage tank 7 (see Figure 2) via a suction hose 1 and discharges the sucked-in sewage into the pressure pipe 5 (see Figure 2) via a discharge hose 3. As it is a pump with a built-in engine, it has the advantage that its operation is not affected by a power outage during a disaster or other such event. Note that instead of the engine pump 23, another pump, such as a motor-driven pump, may be used as the standby pump.

[0042] The engine pump 23 is driven by the power stored in the solar battery 22a. This makes it possible to generate and charge electricity so that there is no shortage of power for igniting the engine of the engine pump 23. However, the continuous operation time of the engine pump 23 in the event of a disaster or the like is an issue.

[0043] The main fuel tank 24 is a tank that stores, for example, 5 liters of fuel for the engine pump 23, and in this embodiment is disposed directly above the engine pump 23. The main fuel tank 24 with a capacity of 5 liters can operate the engine pump 23 for approximately 7 hours.

[0044] The spare fuel tank 25 is a tank that stores spare fuel, for example, with a capacity of 15 liters (or 30 liters), and is installed alongside the main fuel tank 24. When the main fuel tank 24 runs out of fuel, the fuel in this spare fuel tank 25 can be used as a relief, or so-called substitute, allowing the engine pump 23 to operate continuously for approximately 24 to 48 hours. This spare fuel tank 25 is disposed vertically above the main fuel tank 24 as a retrofit.

[0045] The first fuel hose 26a is a hose used to supply fuel stored in the main fuel tank 24 to the engine pump 23. A second fuel hose 26b is connected to the middle of the first fuel hose 26a via an electric valve 28.

[0046] Second fuel hose 26b is a hose used to supply fuel stored in spare fuel tank 25 to engine pump 23. When electric valve 28 is in an open state, second fuel hose 26b and first fuel hose 26a are in communication with each other, and fuel in second fuel hose 26b flows through first fuel hose 26a and is supplied to engine pump 23. On the other hand, when electric valve 28 is in a closed state, second fuel hose 26b and first fuel hose 26a are not in communication with each other.

[0047] The remaining fuel amount monitor 27 is a measuring instrument that is disposed on a fuel cap (not shown) of the main fuel tank 24 and measures the amount of fuel remaining in the main fuel tank 24. This remaining fuel amount monitor 27 uses a float sensor (not shown) that detects the height of the fuel level by a float that moves up and down in accordance with changes in the liquid level. A signal indicating the detected remaining fuel amount is transmitted by the control device 22b to the external server 30 via the communication device 22c. Since this is a known technology, a detailed description will be omitted here. Note that the remaining fuel amount in the main fuel tank 24 may also be measured using technology other than a float sensor.

[0048] Electric valve 28 is an electrically operated on-off valve that is interposed between first fuel hose 26a and second fuel hose 26b and opens and closes based on an open / close command from control device 22b. When electric valve 28 is in the open state, it becomes possible to use spare fuel tank 25 as a relief by refilling fuel from spare fuel tank 25 to engine pump 23. Note that electric valve 28 can also be opened and closed by a user manually inputting an open / close command to an operation panel (not shown) of control panel 22.

[0049] With the above-described configuration, the control device 22b performs various controls in the backup control device 2 according to this embodiment. Specifically, the control device 22b controls starting or stopping the engine pump 23 based on a conduction signal emitted when the electrode rod 6 (see FIG. 2) detects the level of the wastewater, for example, controls sending a signal indicating the remaining fuel amount to the external server 30 via the communication device 22c according to the remaining fuel amount in the main fuel tank 24 detected by the remaining fuel amount monitor 27, and controls opening and closing the power supply valve 28 based on an opening / closing command for the electric valve 28 received from the outside via the communication device 22c.

[0050] In particular, the control device 22b transmits a signal indicating the remaining fuel level in the main fuel tank 24 detected by the remaining fuel level monitor 27 to the external server 30 via the communication device 22c. As a result, the sewerage work staff (hereinafter simply referred to as "user") who is the user of this backup control device 2 can access the external server 30 via an app on their smartphone, a browser on their PC, or the like, and check the remaining fuel level in the main fuel tank 24, etc.

[0051] [Example of functional configuration of backup control device] FIG. 6 is a diagram illustrating an example of the functional configuration of the backup control device according to this embodiment.

[0052] As shown in FIG. 6, the backup control device 2 includes a power generation unit 210, a control unit 220, a power supply unit 230, a communication unit 240, a main fuel remaining amount detection unit 250, a spare fuel switching unit 260, and the like.

[0053] The power generation unit 210 is a power generation means for generating power, such as a solar panel 21 (see FIG. 4). The control unit 220 is a control means for performing various controls related to the backup control device 2, such as a control device 22b (see FIG. 4). The power supply unit 230 is a power source for operating the backup control device 2, such as a solar battery 22a (see FIG. 4). The communication unit 240 is a communication means for communicating between the backup control device 2 and an external server 30 (not shown in FIG. 6) and the like, such as a communication device 22c (see FIG. 4).

[0054] The main fuel remaining amount detection unit 250 is a detection means for detecting the amount of fuel remaining in the main fuel tank 24, and is, for example, a remaining amount monitor 27 (see FIG. 4). The spare fuel switching unit 260 is a switching means for switching the fuel supplied to the engine pump 23 from the fuel in the main fuel tank 24 to the fuel in the spare fuel tank 25, and is, for example, an electric valve 28 (see FIG. 4).

[0055] With the configuration described above, in the backup control device 2 according to this embodiment, the control unit 220 in particular transmits a signal indicating the remaining fuel amount in the main fuel tank 24 detected by the main fuel remaining amount detection unit 250 to the external server 30 via the communication unit 240. Furthermore, based on a fuel switching command (e.g., a command to open the electric valve 28) received from the outside via the communication unit 240, the control unit 220 causes the spare fuel switching unit 260 to switch to using the fuel in the spare fuel tank 25 as relief fuel instead of the main fuel tank 24.

[0056] Therefore, a user of this backup control device 2 can access the external server 30 via an app on their smartphone or a browser on their PC, etc., to check the remaining fuel level in the main fuel tank 24, and if necessary, can switch to using the fuel in the spare fuel tank 25 by sending a fuel switch command to the spare fuel tank 25.

[0057] [Example of external server functional configuration] Fig. 7 is a diagram showing an example of the functional configuration of the external server according to this embodiment, and Fig. 8 is a diagram showing an example of a display screen created by the external server according to this embodiment.

[0058] The external server 30 is a general computer device equipped with a CPU, memory, SSD (or HDD), etc., and as shown in FIG. 7, has a configuration including a control unit 31, a communication unit 32, a storage unit 33, etc.

[0059] The control unit 31 creates a display screen to be displayed on the smartphone app or PC browser in response to a request from the smartphone or PC (hereinafter also referred to as "user device") used by the user, receives operation information of the user device by the user via the communication unit 32, and transmits control information based on the operation information to the backup control device 2.

[0060] FIG. 8 shows an example of a display screen created by the control unit 31.

[0061] 8(a) is a display screen that displays on the user device the remaining amount of fuel in the main fuel tank 24. That is, the control unit 31 displays the remaining amount of fuel in the main fuel tank 24 as shown on the display screen 51 in response to a signal indicating the remaining amount of fuel in the main fuel tank 24 received from the backup control device 2 via the communication unit 32. The remaining amount information in the display area 51a is updated in accordance with changes in the remaining amount of fuel.

[0062] Data related to such display screen 51 is transmitted to the user device via communication unit 32 and displayed on the user device. This allows the user to know the remaining amount of fuel in the main fuel tank 24 in real time without directly operating the backup control device 2.

[0063] It is desirable that the control unit 31 notify the user device of a warning when the remaining fuel amount falls below a certain value. For example, it is desirable that the control unit 31 display or sound a warning on the user device when the remaining fuel amount falls to half, indicating that the level is at a "caution level," and that the control unit 31 display or sound a warning on the user device when the remaining fuel amount falls to one-quarter, indicating that the level is at a "warning level."

[0064] 8(b) is a display screen that has, in addition to a display area 52a corresponding to the above-mentioned display area 51a, an operation area 52b in which a fuel switch instruction can be input to switch the fuel to be used from the fuel in the main fuel tank 24 to the fuel in the spare fuel tank 25. That is, in response to a signal indicating the remaining fuel amount in the main fuel tank 24 received via the communication unit 32, the control unit 31 also displays the operation area 52b when displaying or notifying a warning display or warning sound indicating that the remaining fuel amount has reached the above-mentioned "warning level," for example, when the remaining fuel amount has reached 1 / 4.

[0065] Such data related to the display screen 52 is transmitted to the user device via the communication unit 32 and displayed on the user device. This allows the user to input a fuel switching command on the display screen 52 without directly operating the backup control device 2.

[0066] When a fuel switching command is input on the display screen 52, the control unit 31 receives information that the fuel switching command has been input via the communication unit 32, and then transmits a fuel switching command (for example, a command to open the motor-operated valve 28) to the backup control device 2. As a result, in the backup control device 2, the control unit 220 causes the spare fuel switching unit 260 (see FIG. 6) to switch to using the fuel in the spare fuel tank 25 as relief.

[0067] 7, the communication unit 32 communicates with the user device and the backup control device 2. The storage unit 33 stores data and the like used when the control unit 31 performs various controls.

[0068] With the configuration described above, the external server 30 of this embodiment provides information regarding the remaining fuel amount in the main fuel tank 24 received from the backup control device 2 to the user equipment, and when a fuel switching instruction is input in the user equipment, transmits instruction information for controlling the operation of the backup control device 2 (particularly the reserve fuel switching unit 260).

[0069] In other words, the backup control device 2 of this embodiment indirectly transmits information regarding the remaining fuel amount in the main fuel tank 24 to a user device provided by the user via the communication unit 220 and the external server 30, and when a fuel switching instruction from the user is indirectly received via the external server 30 and the communication unit 220, it causes the backup fuel switching unit 260 to switch the fuel to operate the engine pump 23.

[0070] This provides the following effect: Conventionally, when an engine pump is installed outside for temporary restoration of the manhole pump station 100, the fuel consumption status had to be constantly monitored by a person, whereas according to this embodiment, the user can check the remaining fuel amount in real time by accessing the external server 30 via an app on their own smartphone, a browser on their PC, or the like, even if they are not at the site.

[0071] Furthermore, if the amount of fuel remaining in the main fuel tank 24 becomes low, the user can switch to the spare fuel tank 25 via a smartphone app or PC browser, etc. This prevents the engine pump from stopping due to a lack of fuel while the system is running.

[0072] As described above, the relief system 20 can be unmanned, has excellent responsiveness and simplicity in an emergency, and can appropriately manage the remaining amount of fuel in the fuel tank for the engine pump 23 even when the relief system 20 is in operation. Furthermore, the relief system 20 can realize a so-called remote relief (rescue) operation in which, when the remaining fuel amount in the main fuel tank 24 becomes low, the user can remotely operate the system to switch to using fuel in the spare fuel tank 25.

[0073] Although one embodiment of the present invention has been described above, the above embodiment shows one application example of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configuration of the above embodiment.

[0074] For example, in the above description, a configuration has been described in which second fuel hose 26b is connected to the middle of first fuel hose 26a connecting main fuel tank 24 and engine pump 23 via electric valve 28 (see FIG. 5), but the present invention is not limited to this case.

[0075] For example, the second fuel hose 26b may be arranged to connect the interior of the reserve fuel tank 25 to the interior of the main fuel tank 24. In this case, by installing the reserve fuel tank 25 at a higher position than the main fuel tank 24 using a dedicated stand or the like, it is possible to replenish fuel from the reserve fuel tank 25 to the main fuel tank 24 by taking advantage of the difference in elevation.

[0076] Furthermore, for example, in the above description, the control device 22b acquires a signal indicating the remaining fuel amount detected by the remaining fuel amount monitor 27, but the present invention is not limited to this. For example, the remaining fuel amount monitor 27 may be provided with a communication unit such as ESP 32, and data may be transmitted to the external server 30 via this communication unit.

[0077] Furthermore, for example, in the above description, the control device 22b and the external server 30 are provided as separate devices, but the present invention is not limited to this. For example, the control device 22b may be configured to have each of the functions provided in the external server 30.

[0078] In this case, the various controls performed by the control unit 32 of the external server 30 are realized by the control device 22b. In other words, the backup control device 2 (control device 22b) according to this embodiment directly transmits information related to the remaining fuel amount in the main fuel tank 24 to a user device provided by the user via the communication unit 220, and when a fuel switching instruction from the user is directly received via the communication unit 220, the backup control device 2 (control device 22b) causes the backup fuel switching unit 260 to switch the fuel that operates the engine pump 23.

[0079] In the above description, the control device 22b controls the opening and closing of the power valve 28 based on an opening / closing command for the electric valve 28 received from outside, but the present invention is not limited to this. The control device 22b may automatically control the opening and closing of the electric valve 28 based on the detected value of the remaining amount monitor 27. [Explanation of symbols]

[0080] 1 suction hose 2. Backup control device 3 Discharge hose 4 Pipe Unit 5 Pressure Pipe 7. Sewage tank 8. Sewage Pump 10 Manhole Pump Station 20 Manhole Pump Station Remote Relief System 23 Engine pump (standby pump) 24 Main fuel tank 25 Spare fuel tank 26a No. 1 fuel hose 26b Second fuel hose 27 Remaining Battery Monitor 28 Electric valve 220 Control Unit 240 Communications Department 250 Main fuel level detector 260 Backup fuel switching unit

Claims

1. A manhole pump station remote relief system for use in a manhole pump station, the manhole pump station comprising: a sewage tank; a sewage pump installed in the sewage tank for sucking and discharging sewage; and a pressure pipe for conveying the sewage discharged from the sewage pump to the outside, a standby pump that is installed outside the sewage tank and that sucks in sewage from the sewage tank and discharges the sewage into the pressure pipe when the sewage pump stops; a main fuel tank for storing fuel for operating the standby pump; a spare fuel tank for storing spare fuel for operating the spare pump; a main fuel remaining amount detection unit that detects the amount of fuel remaining in the main fuel tank; a spare fuel switching unit that switches the fuel for operating the spare pump from the fuel in the main fuel tank to the fuel in the spare fuel tank; a control unit that controls the manhole pump station remote relief system; a communication unit that communicates with an external network, The control unit transmitting information relating to the remaining fuel amount in the main fuel tank detected by the main fuel remaining amount detection unit to a user device provided by a user via the communication unit; A manhole pump station remote relief system characterized in that when a fuel switching instruction is received from a user via the communication unit, the backup fuel switching unit switches the fuel to operate the backup pump.

2. The manhole pump station remote relief system described in claim 1, characterized in that when the control unit transmits information regarding the remaining fuel level in the main fuel tank detected by the main fuel remaining level detection unit to a user device provided by the user via the communication unit, if the remaining fuel level in the main fuel tank is below a predetermined value, it prompts a fuel switching instruction.

3. a first fuel hose for supplying fuel in the main fuel tank to the standby pump; a second fuel hose for supplying fuel in the spare fuel tank to the spare pump, 2. The manhole pump station remote relief system according to claim 1, wherein the second fuel hose is connected to the first fuel hose midway through the auxiliary fuel switching unit.

4. 4. The manhole pump station remote relief system according to claim 3, wherein the backup fuel switching unit is an electric valve that can be opened and closed based on an opening / closing command from the control unit.

5. The manhole pump station remote relief system described in claim 1, characterized in that the main fuel remaining amount detection unit is arranged in the fuel cap of the main fuel tank and detects the remaining fuel amount based on a float sensor that detects the height of the liquid level using a float that moves up and down in accordance with changes in the liquid level.

6. 2. The manhole pump station remote relief system according to claim 1, wherein the standby pump is an engine pump.

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