JP6646615B2 - Backup structure in case of emergency shut-off valve failure - Google Patents

Description

The present invention relates to an emergency for preventing secondary disasters such as outflow of tap water and collapse of ground when a water distribution pipe is damaged due to a disaster such as an earthquake or an accident in construction work. The present invention relates to a backup structure in the event of a failure of an emergency shut-off valve, which is a backup means when the emergency shut-off valve loses a shut-off function due to a failure such as a power failure.

  The emergency shut-off valve installed in the water supply tank is a shut-off valve for shutting off the water flow in the water distribution pipe, a driving device for generating a driving force for operating the shut-off valve, and a spindle for transmitting the driving force to the shut-off valve. And a control device that senses an emergency such as a possibility of breakage or breakage of the water distribution pipe and transmits a control signal for operating the drive device (see Patent Document 1).

  A conventional emergency shutoff valve installed in a water storage tank has one emergency shutoff valve installed for one reservoir. FIG. 13 shows an example in which a shutoff valve 200 is installed in the water storage tank 100 (Patent Document 1). The shutoff valve 200 for shutting off the water flow in the water distribution pipe 300 and the driving force for operating the shutoff valve 200 are shown in FIG. The generated driving device 400, the spindle 500 for transmitting the driving force to the shut-off valve 200, and transmitting a control signal for operating the driving device 400 by detecting an emergency such as breakage or fear of damage to the water pipe 300. And a control device 600 that performs the control.

  FIG. 14 shows an example in which a shutoff valve 200 is installed outside the water storage tank 100. The shutoff valve 200 for shutting off the water flow in the water distribution pipe 300 and a driving device 400 that generates a driving force for operating the shutoff valve 200. A spindle 500 for transmitting a driving force to the shut-off valve 200, a control device 600 for detecting an emergency such as breakage or a possibility of breakage of the water distribution pipe 300, and transmitting a control signal for operating the drive device 400; Consists of

  When the shut-off valve is removed from the water distribution pipe during maintenance of the shut-off valve, if the shut-off valve 200 is installed in the water tank 100, the dive work into the water tank 100 is required. It is possible to continue. On the other hand, if the shut-off valve 200 is installed outside the water storage tank 100, there is no need to perform diving work into the water storage tank 100, but it is necessary to continue the distribution of water from the water storage tank and provide a bypass pipe to avoid water interruption. Therefore, it is necessary to secure the installation space for the bypass pipe in addition to the installation space for the shut-off valve 200. In addition, when the water storage tank 100 is outdoors, the water distribution pipeline is buried underground, so the shutoff valve 200 needs to be provided with a pit, and a large installation space is secured around the water storage tank 100. There is a need. During the installation work, the water supply will be cut off. However, if the water supply cannot be cut off, costly water cutoff work will be required. If the installation space cannot be secured around the water storage tank 100, the installation of the shut-off valve 200 must be abandoned, and there are many restrictions on installing the shut-off valve 200 outside the water storage tank 100.

  On the other hand, when the shut-off valve 200 is installed in the water tank 100, there is no need to secure an installation space around the water tank, and when performing maintenance on the shut-off valve 200, diving work is required. There is no need to provide a bypass pipe. In addition, even in the case of installation work on an existing water tank, there is no need to cut off water by performing diving work while the water tank is in operation, and there are few restrictions for introduction. It is preferable that the shut-off valve be submerged and installed in the tank.

  On the other hand, the emergency shut-off valve does not operate when the control panel or the drive device fails, and loses its function. FIG. 15 shows a measure for reducing such a risk. In a large-scale reservoir, the inside of the tank is divided into two layers, and shutoff valves 210 and 220 having the same functions are installed in the water tanks 110 and 120, and a driving device 410. , 420, spindles 510, 520, and control devices 610, 620 are provided in parallel with the respective water distribution pipes 310, 320. If one emergency shut-off valve fails, the operation is ensured by the other emergency shut-off valve. The cost doubles.

  Further, there is known a float valve that is adjusted so that the amount of water flowing into an agricultural water tank is constant (Patent Document 2). Since such a float valve operates mechanically using the buoyancy of the float, it does not require a control panel or a drive device.

Japanese Patent No. 3740192 JP-A-11-344149

  The emergency shut-off valve needs to supply electricity as a driving force to operate, and at the time of a power failure, electricity is supplied by a battery provided in a driving device or a control panel. However, when the power outage lasts for a long time, the electromotive force decreases due to the discharge of the battery, and the emergency shutoff valve eventually stops operating. SUMMARY OF THE INVENTION It is an object of the present invention to provide a preliminary means in the case where the original shut-off valve loses its function by connecting and connecting a float valve which operates mechanically by utilizing the buoyancy of the float.

In order to achieve the above object, the backup structure in the event of an emergency shut-off valve failure according to claim 1 is that, in one or two reservoirs, each reservoir of two reservoirs is connected in series by a communication pipe. Alternatively, the outflow pipes from each water storage tank are connected in parallel and flow out to the distribution pipes, and an emergency situation such as damage or breakage of the water distribution pipes due to a disaster such as an earthquake or an accident in construction work is sensed. Either a one-tank or two-tank reservoir with a control device for transmitting a control signal, a drive device operated by the control signal, and a shut-off valve having a shut-off valve for rotating a spindle by the drive device to shut off the water flow in the water pipe. It was placed in one of the water storage tanks, and separately from the emergency shutoff valve, a float valve that shuts off the water flow in the water distribution pipe by adjusting the opening of the valve according to the drop in water level was connected in series with the emergency shutoff valve. Features A.

The backup structure in the event of a failure of the emergency shut-off valve according to claim 2 is that, in the two reservoirs, the respective reservoirs are connected in series by a communication pipe to flow out to the distribution pipe, and a disaster such as an earthquake or construction work is performed. Control device that transmits a control signal by sensing an emergency such as the possibility of breakage or breakage of a water distribution pipe due to an accident in the above, a drive device that is operated by the control signal, and a spindle that is operated by the drive device to rotate the water flow in the distribution pipe. An emergency shut-off valve having a shut-off valve for shutting off the water or an emergency shut-off valve in which a float valve for adjusting the opening of the valve in accordance with the drop of the water level to shut off the water flow in the water distribution pipe is connected in series to one of the two reservoirs. It is arranged in a water storage tank, and a float valve separate from the float valve is arranged in the other water storage tank of the two tanks.

In the backup structure in the event of an emergency shut-off valve failure, the outflow pipes from the respective storage tanks are connected in parallel in the two reservoirs and flow out to the distribution pipes, and at the same time, disasters such as earthquakes and constructions occur. A control device that senses an emergency such as the risk of breakage or breakage of a water distribution pipe due to an accident during construction, transmits a control signal, a drive device that operates according to the control signal, rotates the spindle by the drive device, and rotates the spindle inside the distribution pipe. An emergency shut-off valve having a shut-off valve for shutting off the water flow is arranged in one of the reservoirs of the two reservoirs, and a float valve for shutting off the water flow in the water distribution pipe by adjusting the opening of the valve according to the drop in the water level. It is characterized in that it is arranged in the other reservoir of the two reservoirs.

In the backup structure in the event of an emergency shut-off valve failure, the outflow pipes from the respective storage tanks are connected in parallel in the two reservoirs and flow out to the distribution pipes, and at the same time, disasters such as earthquakes and constructions occur. A control device that senses an emergency such as the risk of breakage or breakage of a water distribution pipe due to an accident during construction, transmits a control signal, a drive device that operates according to the control signal, rotates the spindle by the drive device, and rotates the spindle inside the distribution pipe. An emergency shut-off valve having a shut-off valve for shutting off water flow, a float valve for adjusting the opening of the valve in accordance with a drop in water level and shutting off the water flow in the water distribution pipe is additionally connected, and one of the two reservoirs is a reservoir. And a float valve separate from the float valve is arranged in the other reservoir of the two reservoirs.

According to the backup structure in the event of an emergency shut-off valve failure according to the present invention, in one or two reservoirs, the reservoirs of the two reservoirs are connected in series by a communication pipe, or the reservoirs are connected to each other. Control to connect the outflow pipes in parallel and to flow out to the distribution pipes, and to transmit a control signal by detecting an emergency such as damage or breakage of the water distribution pipes due to a disaster such as an earthquake or an accident in construction work. An emergency shut-off valve having a device, a driving device operated by a control signal, and a shut-off valve for turning a spindle by the driving device to shut off a water flow in a water distribution pipe is disposed in one of two or three reservoirs. However, a float valve that shuts off the water flow in the water pipe by adjusting the opening of the valve according to the drop in water level was connected in series with the emergency shut-off valve separately from the emergency shut-off valve. Generated and in action Also in no circumstances, to the event of a disaster will closing the float valve by drawdown, it is possible to secure at least one of water cistern water distribution pond 1 tank or 2 tank.

In addition, according to the backup structure in the event of an emergency shut-off valve failure according to the present invention, in the two reservoirs, each reservoir is connected in series by a communication pipe to flow out to the distribution pipe, and disasters such as earthquakes or construction A control device that senses an emergency such as the risk of breakage or breakage of a water distribution pipe due to an accident during construction, transmits a control signal, a drive device that operates according to the control signal, rotates the spindle by the drive device, and rotates the spindle inside the distribution pipe. An emergency shutoff valve having a shutoff valve that shuts off water flow or an emergency shutoff valve in which a float valve that shuts off water flow in a water distribution pipe by adjusting the opening of the valve in accordance with a drop in water level is connected to one of two tanks. Since the float shutoff valve is located in one of the two reservoirs and the float valve separate from the float valve is located in the other of the two reservoirs, even if the emergency shut-off valve fails and cannot operate, It is possible to secure a quantity of water each reservoir at the same level by the float valve during the disaster.

In addition, according to the backup structure in the event of an emergency shut-off valve failure according to the present invention, in two reservoirs, the outflow pipes from the respective storage tanks are connected in parallel and flow out to the distribution pipes, and disasters such as earthquakes and the like occur. A control device that senses an emergency such as the risk of breakage or breakage of a water distribution pipe due to an accident in construction work and transmits a control signal, a drive device that operates according to the control signal, and a spindle that is rotated by the drive device to rotate the water supply pipe. An emergency shut-off valve having a shut-off valve for shutting off the water flow is disposed in one of the two reservoirs, and the opening of the valve is adjusted in accordance with a drop in the water level to shut off the water flow in the water distribution pipe. Is placed in the other reservoir of the two reservoirs, so even if a failure occurs in the emergency shutoff valve and it cannot operate, the float valve will close due to a drop in water level in the event of a disaster. At least one of the water cistern of the water distribution pond 2 tank can be ensured.

In addition, according to the backup structure in the event of an emergency shut-off valve failure according to the present invention, in two reservoirs, the outflow pipes from the respective storage tanks are connected in parallel and flow out to the distribution pipes, and disasters such as earthquakes and the like occur. A control device that senses an emergency such as the risk of breakage or breakage of a water distribution pipe due to an accident in construction work and transmits a control signal, a drive device that operates according to the control signal, and a spindle that is rotated by the drive device to rotate the water supply pipe. An emergency shut-off valve having a shut-off valve for shutting off the water flow of the reservoir is connected with a float valve for adjusting the opening of the valve in accordance with a drop in the water level and shutting off the water flow in the water distribution pipe, thereby storing one of the two reservoirs. In the event of a disaster, even if the emergency shut-off valve fails and cannot operate because the float shut-off valve is placed in the other reservoir of the two reservoirs and the float valve separate from the float valve is placed in the tank Can is to secure the amount of water of each water tank by the float valve.

It is the 1st schematic diagram which applied the backup structure at the time of an emergency shutoff valve failure by the present invention to one reservoir. It is the 2nd schematic diagram which applied the backup structure at the time of emergency shutoff valve failure by the present invention to two reservoirs connected in series. It is the 3rd schematic diagram which applied the backup structure at the time of the failure of the emergency shutoff valve by this invention to two reservoirs connected in series. It is the 4th schematic diagram which applied the backup structure at the time of emergency shutoff valve failure by the present invention to two reservoirs connected in parallel. It is the 5th schematic diagram which applied the backup structure at the time of an emergency shutoff valve failure by the present invention to two reservoirs connected in series. It is the 6th schematic diagram which applied the backup structure at the time of an emergency shut-off valve failure by the present invention to two reservoirs connected in series. FIG. 6 is another schematic diagram in FIG. 5. FIG. 7 is another schematic diagram in FIG. 6. FIG. 9 is another schematic diagram in FIG. 7 or FIG. 8. It is the 7th schematic diagram which applied the backup structure at the time of an emergency shutoff valve failure by the present invention to two reservoirs connected in parallel. It is another schematic diagram in FIG. It is the 8th schematic diagram which applied the backup structure at the time of an emergency shutoff valve failure by the present invention to two reservoirs connected in parallel. It is a conventional schematic diagram which installs one emergency shutoff valve in a reservoir. It is a conventional schematic diagram which installs one emergency shutoff valve outside a reservoir. It is a conventional schematic diagram which installs two emergency shutoff valves outside two reservoirs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a first schematic diagram in which a backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to one reservoir, and an emergency shut-off valve 11 has a shut-off valve 21 installed in a water storage tank 90. Then, a shutoff valve 21 for shutting off the water flow in the water distribution pipe 81, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage to the water distribution pipe 81. Or a control device 51 that senses an emergency such as a risk of damage and transmits a control signal for operating the drive device 31.

  When an emergency such as damage or damage due to a disaster such as an earthquake or an accident in construction work occurs in the water distribution network connected to the water distribution pipe 81 provided at the lower part of the water storage tank 90, the control device 51 is in an emergency. A control signal for the occurrence of a situation is transmitted to the drive device 31. The shut-off valve 21 installed inside the lower part of the water storage tank 90 opens and closes the flow path by the rotation of the valve body, and is applied to the spindle 41 from the driving device 31 which receives a control signal from the control device 51. The valve body is rotated by the rotation torque to close the flow path and cut off the water flow in the water distribution pipe 81.

  On the other hand, a float valve 61 that adjusts the opening of the valve in accordance with a drop in the water level separately from the shutoff valve 21 is connected separately from the shutoff valve 21. The float valve 61 only has a function of adjusting the opening degree of the valve according to a change in water level using the buoyancy of the float, and cannot be expected to operate due to an earthquake seismic intensity or an excessive flow rate, but is simple and inexpensive in structure. Therefore, the reliability can be improved at lower cost compared to the case where two emergency shutoff valves are installed.

  The shutoff valve 21 needs to supply electricity as a driving force to operate, and at the time of a power failure, electricity is supplied by a battery provided in the control device 51 and the drive device 31. However, when the power outage lasts for a long time, the electromotive force decreases due to the discharge of the battery, and the shutoff valve 21 eventually stops operating. At that time, if the distribution pipe is damaged due to an earthquake, disaster, accident, etc., it is stored in the reservoir. All of the water that has been washed away will be lost, making it impossible to secure the necessary drinking water in the event of a disaster. In addition, secondary disasters such as inundation and subsidence of the ground are caused around the damaged part of the distribution pipe. Furthermore, turbid water is generated by the sediment deposited at the bottom of the reservoir and flowing out to the distribution pipe. In addition, extensive pipe washing work is required even after repairing the damaged part, causing adverse effects such as hindering the start of early recovery water supply.

  Even if the power failure occurs for a long time and the battery provided in the control device 51 or the driving device 31 is exhausted and the water stored in the reservoir flows out, the float valve 61 is closed due to a decrease in the water level. The water in the water pond does not flow out, and the above-mentioned adverse effects can be prevented.

FIG. 2 is a second schematic diagram in which a backup structure in the event of an emergency shutoff valve failure according to the present invention is applied to two reservoirs connected in series, and the reservoir is divided into two reservoirs 91 and 92. In this case, the water reservoir 91 on the primary side and the water reservoir 92 on the secondary side are connected in series to a water distribution pipe 81 by a connecting pipe 71. In the water reservoir 92 on the secondary side, a shutoff valve 21 for shutting off the water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage to the water pipe. Or an emergency shut-off valve 11 that is configured by a control device 51 that transmits a control signal by sensing an emergency such as a risk of breakage. The emergency shut-off valve 11 is provided separately from the emergency shut-off valve 11 according to a drop in water level. Is connected in series to the emergency shut-off valve 11 by adjusting the opening of the float valve 61 to shut off the water flow in the water distribution pipe.

  When an emergency such as a risk of being damaged or damaged due to a disaster such as an earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided at a lower portion of the secondary water storage tank 92, the control is performed. The device 51 sends a control signal for the occurrence of an emergency to the drive device 31. The emergency shut-off valve 11 installed in the secondary-side water storage tank 92 rotates the valve body by the rotation torque applied to the spindle 41 from the driving device 31 which has received the control signal from the control device 51, and causes the valve to rotate. Close and shut off the water flow to the water distribution pipe 81.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and the shutoff valve is eventually provided. If the water distribution network is damaged due to an earthquake, disaster, accident, or the like, the water flow out of the water distribution pipe 81 cannot be blocked, and the water flow is stored in the primary water storage tank 91 and the secondary water storage tank 92. All the drained water is washed away, and it becomes impossible to secure drinking water required in the event of a disaster. However, since the float valve 61 installed in the secondary water storage tank 92 is closed due to a decrease in the water level, the water flows out. You can stop it. The water levels of the primary-side water storage tank 91 and the secondary-side water storage tank 92 are at the same level, and both can secure a sufficient amount of water.

FIG. 3 is a third schematic diagram in which the backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to two reservoirs connected in series, and the reservoir is divided into two reservoirs 91 and 92. In this case, the water reservoir 91 on the primary side and the water reservoir 92 on the secondary side are connected in series to a water distribution pipe 81 by a connecting pipe 71. In the water storage tank 91 on the primary side, a shutoff valve 21 for shutting off the water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage to the water distribution pipe. Or an emergency shut-off valve 11 that is configured by a control device 51 that transmits a control signal by sensing an emergency such as a risk of breakage. The emergency shut-off valve 11 is provided separately from the emergency shut-off valve 11 according to a drop in water level. Is connected in series to the emergency shut-off valve 11 by adjusting the opening of the float valve 61 to shut off the water flow in the water distribution pipe.

  When an emergency such as a risk of being damaged or damaged due to a disaster such as an earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided at a lower portion of the secondary water storage tank 92, the control is performed. The device 51 sends a control signal for the occurrence of an emergency to the drive device 31. The emergency shut-off valve 11 installed in the primary-side water storage tank 91 rotates the valve body by the rotational torque applied to the spindle 41 from the driving device 31 which has received the control signal from the control device 51, and causes the flow path to flow. Close and shut off the water flow to the connecting pipe 71.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and the shutoff valve is eventually provided. If the water distribution network is damaged due to an earthquake, disaster, accident, or the like, the water flow out of the water distribution pipe 81 cannot be blocked, and the water flow is stored in the primary water storage tank 91 and the secondary water storage tank 92. All the drained water is washed away, and it becomes impossible to secure drinking water required in the event of a disaster. However, since the float valve 61 installed in the primary water storage tank 91 is closed due to a decrease in the water level, the connection pipe 71 is closed. Water can be stopped. Although the amount of water in the secondary water tank 92 cannot be secured, the amount of water in the primary water tank 91 can be secured.

FIG. 4 is a fourth schematic diagram in which a backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to two reservoirs connected in parallel, and the reservoir is divided into two reservoirs 91 and 92. In this case, the outflow pipe 72 from one water storage tank 91 and the outflow pipe 73 from the other water storage tank 92 are connected in parallel and connected to the water distribution pipe 81. In one water storage tank 91, a shutoff valve 21 for shutting off a water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage or breakage of a water distribution pipe An emergency shut-off valve 11 is installed, which is composed of a control device 51 that senses an emergency such as a danger of transmitting a control signal and transmits a control signal. The emergency shut-off valve 11 is opened separately from the emergency shut-off valve 11 in response to a drop in water level. The float valve 61 for adjusting the degree and shutting off the water flow in the water distribution pipe is connected in series to the emergency shutoff valve 11.

  When an emergency such as damage or breakage due to a disaster such as an earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided below the two water storage tanks 91 and 92, control is performed. The device 51 sends a control signal for the occurrence of an emergency to the drive device 31. The emergency shutoff valve 11 installed in one of the water storage tanks 91 rotates the valve body by the rotational torque applied to the spindle 41 from the drive device 31 which has received the control signal from the control device 51, and closes the flow path. The water flow to the outflow pipe 72 is shut off.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and eventually the shut-off valve If the water distribution network is damaged due to an earthquake, a disaster, an accident, or the like at that time, the water flowing out of the water distribution pipe 81 cannot be shut off, and the water stored in the one water storage tank 91 and the other water storage tank 92 is All of the water is lost and drinking water required in the event of a disaster cannot be secured. However, since the float valve 61 installed in one of the water storage tanks 91 is closed due to a decrease in water level, the outflow of water to the outflow pipe 72 is stopped. I can do it. Although the amount of water in the other water storage tank 92 cannot be secured, the amount of water in the one water storage tank 91 can be secured.

FIG. 5 is a fifth schematic diagram in which the backup structure according to the present invention in the event of an emergency shut-off valve failure is applied to two reservoirs connected in series, and the reservoir is divided into two reservoirs 91 and 92. In this case, the water reservoir 91 on the primary side and the water reservoir 92 on the secondary side are connected in series to a water distribution pipe 81 by a connecting pipe 71. In the water storage tank 91 on the primary side, a shutoff valve 21 for shutting off the water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage to the water distribution pipe. Or, an emergency shutoff valve 11 composed of a control device 51 that transmits a control signal by sensing an emergency such as a possibility of breakage is provided, and a secondary water storage tank 92 is provided with a water level drop according to a drop in water level. A float valve 61 that adjusts the opening of the valve to shut off the water flow in the water distribution pipe is provided.

  In the event that an emergency such as a damage or a risk of damage due to a disaster such as an earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided at a lower part of the secondary water storage tank 92, control is performed. The device 51 sends a control signal for the occurrence of an emergency to the drive device 31. The emergency shut-off valve 11 installed in the primary-side water storage tank 91 rotates the valve body by the rotational torque applied to the spindle 41 from the driving device 31 that has received the control signal from the control device 51, and causes the valve to rotate. Close and shut off the water flow to the water distribution pipe 81.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and eventually the shut-off valve If the water distribution network breaks due to an earthquake, disaster, accident, or the like at that time, the water flowing out of the water distribution pipe 81 cannot be shut off and stored in the primary water storage tank 91 and the secondary water storage tank 92. All of the drained water is washed away, and it becomes impossible to secure drinking water required in the event of a disaster. However, since the float valve 61 installed in the secondary water storage tank 92 is closed due to a decrease in the water level, the water from the water distribution pipe 81 is closed. Water can be stopped. The water levels of the primary-side water storage tank 91 and the secondary-side water storage tank 92 are at the same level, and both can secure a sufficient amount of water.

FIG. 6 is a sixth schematic diagram in which the backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to two reservoirs connected in series, and the reservoir is divided into two reservoirs 91 and 92. In this case, the water reservoir 91 on the primary side and the water reservoir 92 on the secondary side are connected in series to a water distribution pipe 81 by a connecting pipe 71. In the primary-side water storage tank 91, a float valve 61 that adjusts the opening of the valve according to a decrease in the water level to shut off the water flow in the water distribution pipe is disposed, and in the secondary-side water storage tank 92, A shut-off valve 21 for shutting off a water flow, a driving device 31 for generating a driving force for operating the shut-off valve 21, a spindle 41 for transmitting the driving force to the shut-off valve 21, and detecting an emergency such as breakage or breakage of a water pipe. An emergency shutoff valve 11 composed of a control device 51 for transmitting a control signal is provided.

  When an emergency such as a risk of being damaged or damaged due to a disaster such as an earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided at a lower portion of the secondary water storage tank 92, the control is performed. The device 51 sends a control signal for the occurrence of an emergency to the drive device 31. The emergency shut-off valve 11 installed in the secondary-side water storage tank 92 rotates the valve body by the rotation torque applied to the spindle 41 from the driving device 31 which has received the control signal from the control device 51, and causes the valve to rotate. Close and shut off the water flow to the water distribution pipe 81.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and the shutoff valve is eventually provided. If the water distribution network is damaged due to an earthquake, disaster, accident, or the like, the water flow out of the water distribution pipe 81 cannot be blocked, and the water flow is stored in the primary water storage tank 91 and the secondary water storage tank 92. All the drained water is washed away, and it becomes impossible to secure drinking water required in the event of a disaster. However, since the float valve 61 installed in the primary water storage tank 91 is closed due to a decrease in the water level, the connection pipe 71 is closed. Water can be stopped. Although the amount of water in the secondary water tank 92 cannot be secured, the amount of water in the primary water tank 91 can be secured.

  FIG. 7 is a fifth schematic diagram shown in FIG. 5, in which the shutoff valve 21 installed in the primary-side water storage tank 91 has a float valve 62 that performs a closing operation in response to a decrease in the water level of the water storage tank 91. Are additional schematic connections in series, and the configuration and operation are the same as those described in the fifth schematic diagram. What is different from the fifth schematic diagram is that when the supply of electricity is stopped due to a power outage, the primary water storage tank 91 and the secondary water storage tank 92 can both secure water levels at different water levels. The details are omitted.

  FIG. 8 is a sixth schematic diagram shown in FIG. 6, in which the shutoff valve 21 installed in the secondary water storage tank 92 has a float valve 62 that performs a closing operation in response to a decrease in the water level of the water storage tank 92. Is an additional schematic diagram in which is added in series, and its configuration and operation are the same as those described in the sixth schematic diagram. What is different from the sixth schematic diagram is that when the supply of electricity is stopped due to a power outage, the primary water storage tank 91 and the secondary water storage tank 92 can both secure water levels at different water levels. The details are omitted.

  FIG. 9 shows another embodiment in each of the schematic views shown in FIG. 7 or FIG. 8, in which it is difficult to dispose the shut-off valve 21 in the primary water storage tank 91 or the secondary water storage tank 92. In a schematic diagram in which the float valve 62 is omitted and the power supply is stopped due to a power outage, the primary water storage tank 91 and the secondary water storage tank 92 have different water levels at different water levels. Can be secured.

FIG. 10 is a seventh schematic diagram in which the backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to two reservoirs connected in parallel, and the reservoir is divided into two reservoirs 91 and 92. In this case, the outflow pipe 72 from one water storage tank 91 and the outflow pipe 73 from the other water storage tank 92 are connected in parallel and connected to the water distribution pipe 81. In one water storage tank 91, a shutoff valve 21 for shutting off a water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage or breakage of a water distribution pipe An emergency shut-off valve 11 composed of a control device 51 that senses an emergency such as a fear of transmitting a control signal and transmits a control signal is arranged. In the other water storage tank 92, the opening degree of the valve according to a decrease in water level is set. And a float valve 61 that shuts off the water flow in the water distribution pipe by adjusting the flow rate.

  In the event that an emergency such as damage or breakage due to a disaster such as a flow earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided below the two water storage tanks 91 and 92, The control device 51 transmits a control signal indicating occurrence of an emergency to the drive device 31. The emergency shutoff valve 11 installed in one of the water storage tanks 91 rotates the valve body by the rotational torque applied to the spindle 41 from the drive device 31 which has received the control signal from the control device 51, and closes the flow path. The water flow to the water distribution pipe 81 is shut off.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and eventually the shut-off valve If the water distribution network is damaged due to an earthquake, a disaster, an accident, or the like at that time, the water flowing out of the water distribution pipe 81 cannot be shut off, and all the water stored in the two water storage tanks 91 and 92 flows away, Although it becomes impossible to secure drinking water required in the event of a disaster, the outflow of water to the water distribution pipe 81 can be stopped because the float valve 61 installed in the other water storage tank 92 closes due to a decrease in water level. Although the amount of water in one water storage tank 91 cannot be secured, the amount of water in the other water storage tank 92 can be secured.

  FIG. 11 is another embodiment of the seventh schematic diagram shown in FIG. 10. When it is difficult to arrange the shut-off valve 21 in one of the water storage tanks 91, it is omitted and the other water storage tank 92 is omitted. Is a schematic diagram in which a float valve 62 separate from the float valve 61 is arranged. When the supply of electricity is stopped due to a power failure, the water amounts of the two water storage tanks 91 and 92 can be secured at different water levels. .

FIG. 12 is an eighth schematic diagram in which the backup structure in the event of an emergency shut-off valve failure according to the present invention is applied to two reservoirs connected in parallel, and the reservoir is divided into two reservoirs 91 and 92. In this case, the outflow pipe 72 from one water storage tank 91 and the outflow pipe 73 from the other water storage tank 92 are connected in parallel and connected to the water distribution pipe 81. In one water storage tank 91, a shutoff valve 21 for shutting off a water flow, a driving device 31 for generating a driving force for operating the shutoff valve 21, a spindle 41 for transmitting the driving force to the shutoff valve 21, and damage or breakage of a water distribution pipe An emergency shut-off valve 11 composed of a control device 51 that senses an emergency such as a fear of a situation and transmits a control signal is connected in series with a float valve 62 that performs a closing operation in response to a decrease in the water level of one of the water storage tanks 91. An additional connection is made, and a float valve 61 separate from the float valve 62 is arranged in the other water storage tank 92.

  In the event that an emergency such as damage or breakage due to a disaster such as a flow earthquake or an accident in construction work occurs in a water distribution network connected to a water distribution pipe 81 provided below the two water storage tanks 91 and 92, The control device 51 transmits a control signal indicating occurrence of an emergency to the drive device 31. The emergency shutoff valve 11 installed in one of the water storage tanks 91 rotates the valve body by the rotational torque applied to the spindle 41 from the drive device 31 which has received the control signal from the control device 51, and closes the flow path. The water flow to the water distribution pipe 81 is shut off.

  On the other hand, when the supply of electricity is stopped due to the power failure, the control device 51 and the driving device 31 are kept operating by the battery. However, when the power failure is continued for a long time, the electromotive force is reduced due to the discharge of the battery, and the shutoff valve is eventually provided. If the water distribution network is damaged due to an earthquake, a disaster, an accident, or the like at that time, the water flowing out of the water distribution pipe 81 cannot be shut off, and all the water stored in the two water storage tanks 91 and 92 flows away, Although it becomes impossible to secure the drinking water required in the event of a disaster, the outflow of water to the water distribution pipe 81 is stopped because the float valves 62 and 61 installed in the two water storage tanks 91 and 92 are closed due to a decrease in water level. Therefore, the water amounts of the two water storage tanks 91 and 92 can be secured at different water levels.

  Although the present invention has been described in the embodiment in which the emergency shut-off valve is arranged in each water storage tank, as described in the related art, it may be arranged outside each water storage tank, but the details are omitted. .

  Further, the present invention has been described in the embodiment in which the emergency shutoff valve or the float valve is arranged in the two reservoirs, but the same can be applied to the case where the emergency shutoff valve or the float valve is implemented in two reservoirs instead of the two reservoirs. I can do it.

  As described above, according to the present invention, a float valve that operates mechanically by utilizing the buoyancy of a float is used as a backup means in the case where the original shut-off valve loses its function. At the time of occurrence, the float valve closes due to a decrease in the water level, and the amount of water in the reservoir can be secured.

11 Emergency shut-off valve 21 Shut-off valve 31 Drive 41 Spindle 51 Controller 61, 62 Float valve 71 Connecting pipe 72, 73 Outflow pipe 81 Water pipe 90, 91, 92 Water tank

Claims (4)

In one or two reservoirs, the reservoirs of the two reservoirs are connected to each other in series by a communication pipe, or the outflow pipes from each reservoir are connected in parallel to flow out to the distribution pipe, A control device that transmits a control signal by sensing an emergency such as a risk of breakage or breakage of a water supply pipe due to a disaster such as an earthquake or an accident in construction work, a drive device that operates by the control signal, and the drive device An emergency shut-off valve having a shut-off valve for rotating the spindle to shut off the water flow in the water distribution pipe is arranged in one of the reservoirs of the one or two reservoirs, separately from the emergency shut-off valve, A backup structure in the event of an emergency shut-off valve failure, wherein a float valve for adjusting the opening of the valve in accordance with a drop in the water level to shut off the water flow in the water distribution pipe is connected in series to the emergency shut-off valve. In the two reservoirs, each reservoir is connected in series by a communication pipe and flows out to the distribution pipe. A control device that detects a situation and sends a control signal, a drive device that is operated by the control signal, an emergency shutoff valve that has a shutoff valve that rotates a spindle by the drive device and shuts off water flow in the water distribution pipe, or when the water level drops. An emergency shut-off valve in which a float valve that shuts off the water flow in the water distribution pipe by adjusting the opening of the valve in accordance with the valve is arranged in one of the two reservoirs in one of the two reservoirs, and is provided separately from the float valve. A backup structure in the event of an emergency shut-off valve failure, wherein a float valve is arranged in the other reservoir of the two reservoirs. In two reservoirs, the outflow pipes from each water storage tank are connected in parallel and flow out to the distribution pipe, and there is a possibility that the water distribution pipe may be damaged or damaged due to disasters such as earthquakes or accidents in construction work. The two tanks include a control device that transmits a control signal in response to an emergency, a drive device that operates according to the control signal, and an emergency shutoff valve that has a shutoff valve that rotates a spindle by the drive device and shuts off water flow in a water distribution pipe. Was placed in one of the reservoirs of the reservoir, and a float valve that shuts off the water flow in the distribution pipe by adjusting the opening of the valve according to the drop in the water level was placed in the other reservoir of the two reservoirs. A backup structure in the event of an emergency shut-off valve failure. In two reservoirs, the outflow pipes from each water storage tank are connected in parallel and flow out to the distribution pipe. An emergency shut-off valve having a control device for transmitting a control signal upon sensing an emergency, a drive device operated by the control signal, and a shut-off valve for rotating a spindle by the drive device to shut off a water flow in a water distribution pipe. A float valve that adjusts the opening degree of the valve according to the above and shuts off the water flow in the water distribution pipe is additionally connected and arranged in one of the two storage tanks, and a float valve separate from the float valve A backup structure in the event of an emergency shut-off valve failure.

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