JP6153363B2 - Sprinkler fire extinguishing equipment and air / water separation and drainage system - Google Patents

Description

The present invention relates to a sprinkler fire extinguishing installations and steam separator drainage device, a steam separator drainage device for use in particular sprinkler fire extinguishing equipment and the sprinkler fire extinguishing facility and negative pressure secondary pipe of the pre-actuated valve.

  2. Description of the Related Art Conventionally, there is a pre-acting sprinkler fire extinguishing equipment in which a secondary side pipe connected to a sprinkler head is filled with compressed air and a pre-acting valve is provided on the base end side of the secondary side pipe. This equipment opens the pre-actuated valve when the fire detector installed in the same protection zone as the sprinkler head operates, or when the fire detector operates and detects the sprinkler head opening, and the secondary side It is configured to fill the pipe with water.

  In such a pre-actuated sprinkler fire extinguishing system, water is discharged when both the fire detector and the sprinkler head are operated, so that water damage is unlikely to occur, but if the sprinkler head is damaged, the sprinkler head is connected. The water collected in the falling piping etc. may cause water leakage.

  For this reason, a technique is disclosed in which a vacuum pump is connected to the secondary side pipe so that the inside of the secondary side pipe is set to a negative pressure and water is not leaked even if the sprinkler head is damaged (see, for example, Patent Documents 1 to 3). . In addition, a technique is disclosed in which the inside of the secondary pipe is set to a high vacuum and the residual water in the falling pipe is evaporated after draining the secondary pipe (see, for example, Patent Documents 4 and 5).

Japanese Utility Model Publication No. 06-026292 Japanese Patent No. 5188439 JP 2010-233894 A Japanese Patent No. 5025299 Japanese Patent No. 5054789

  However, the conventional pre-acting sprinkler fire extinguishing equipment with negative pressure on the secondary side pipe has a problem that when water flows into the vacuum pump, the vacuum pump may become overloaded and stop or break down. there were.

The present invention has been made to solve the above-described problems, and even if water flows into the piping from the secondary side piping to the vacuum pump, the sprinkler fire extinguishing can prevent the water from flowing into the vacuum pump. The purpose is to obtain equipment and air-water separation and drainage equipment .

The sprinkler fire extinguishing equipment according to the present invention includes a pressurized water feeding device, a pre-actuating valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and the pre-acting valve. A secondary side pipe provided on the secondary side of the operating valve to which the sprinkler head is connected; a vacuum pump that always makes negative pressure in the secondary side pipe; and the secondary side pipe and the vacuum pump. In a sprinkler fire extinguishing facility comprising a vacuum pipe to be connected, the vacuum pipe is composed of a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump. An air / water separation / drainage device is provided between the first vacuum pipe and the second vacuum pipe, and the air / water separation / drainage device has an exhaust port at an upper end portion, and a lower end. A pressure-resistant outer shell with a drain outlet in the interior and an inlet in the internal space And a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain outlet at the lower end, and an inflow port in the internal space, below the first tank. The second tank provided is connected to the inlet of the second tank and the first tank and the first vacuum pipe when not draining, and the inlet of the first tank is drained when draining. And the first vacuum pipe communicating with each other, the drainage inflow path selection means for blocking the flow path between the inlet of the second tank and the first vacuum pipe, and when not draining, The exhaust port of the second tank and the exhaust port of the first tank and the second vacuum pipe are communicated, and the drain port of the first tank and the second vacuum pipe are communicated when draining. The exhaust for blocking the flow path between the exhaust port of the second tank and the second vacuum pipe An exhaust passage selecting means, an intake valve having one end opened to the outside air and the other end connected to the exhaust port of the second tank, and is normally closed and opened when draining; Drain connected to a drain port of the second tank and having the other end connected to a drain port that opens below the drain port of the second tank and is normally closed and opened when draining A drainage exhaust path selection means is provided in a first exhaust pipe that connects the second vacuum pipe and the exhaust port of the first tank, and from the second vacuum pipe A check valve for restricting the flow of air toward the first tank is provided, and when not drained, the water flowing in from the first vacuum pipe is stored in the second tank, and is supplied to the second vacuum pipe. The water is prevented from flowing in, and when draining, the draining inflow path selection means and the draining exhaust path selection The flow path between the vacuum pipe and the second tank is blocked by the selection means, the intake valve is opened to set the inside of the second tank to atmospheric pressure, the drain valve is opened and the second tank is opened. The water stored in the tank is discharged, the communication between the vacuum pipe and the first tank is maintained, the water flowing from the first vacuum pipe is stored in the first tank, and the first tank The water is prevented from flowing into the second vacuum pipe.

Further, the sprinkler fire extinguishing equipment according to the present invention includes a pressurized water supply device, a pre-acting valve, a primary side pipe provided on the primary side of the pre-acting valve and connected to the proximal end side of the pressurized water supplying device, A secondary side pipe provided on the secondary side of the pre-acting valve to which a sprinkler head is connected, a vacuum pump that always makes negative pressure in the secondary side pipe, the secondary side pipe and the vacuum pump In a sprinkler fire extinguishing facility comprising: a vacuum pipe connecting the first vacuum pipe connected to the secondary side pipe; a second vacuum pipe connected to the vacuum pump; An air / water separation / drainage device is provided between the first vacuum pipe and the second vacuum pipe, and the air / water separation / drainage device has an exhaust port at an upper end. The pressure resistance is provided with a drain outlet at the lower end and an inlet in the internal space. A first tank having a shell, a pressure-resistant outer shell provided with an exhaust port at an upper end, a drain port at a lower end, and an inflow port in an internal space, than the first tank The second tank provided below is in communication with the inlet of the second tank and the first tank and the first vacuum pipe when not draining, and when draining, the first tank is connected with the first tank. A drainage inflow path selecting means for communicating the inlet and the first vacuum pipe to cut off a flow path between the inlet of the second tank and the first vacuum pipe; The exhaust port of the second tank, the exhaust port of the first tank, and the second vacuum pipe are communicated, and when draining, the exhaust port of the first tank and the second vacuum pipe are connected to each other. Communicating and blocking the flow path between the exhaust port of the second tank and the second vacuum pipe An exhaust passage selecting means for draining, an intake valve having one end opened to the outside air and the other end connected to the exhaust port of the second tank, and is normally closed and opened when draining, and one end Is connected to a drain outlet of the second tank, and the other end is provided in a drain pipe connected to an outlet opening below the drain outlet of the second tank, and is normally closed and opened when draining. The drainage inflow path selection means includes a first inflow pipe connecting the first vacuum pipe and an inlet of the first tank, and the first vacuum pipe. A second inflow pipe connecting the inlet of the second tank, the first vacuum pipe, the first inflow pipe and the second inflow pipe, and the first vacuum pipe; A switching valve for switching the inflow pipe to be communicated with the drain port of the first tank and the exhaust port of the second tank And a connecting valve that is provided in the connecting pipe and is open when not drained and closed when drained, and the exhaust passage selection means for draining includes the second vacuum pipe and the A first exhaust pipe that connects the exhaust port of the first tank, a second exhaust pipe that connects the second vacuum pipe and the exhaust port of the second tank, and the second exhaust pipe An exhaust shut-off valve that is open when not drained and closed when drained, and stores the water flowing in from the first vacuum pipe in the second tank when not drained, The water is prevented from flowing into the second vacuum pipe, and the flow between the vacuum pipe and the second tank is prevented by the drainage inflow path selection means and the drainage exhaust path selection means during drainage. After shutting off the passage and opening the intake valve to bring the inside of the second tank to atmospheric pressure The drain valve is opened to discharge water stored in the second tank, and the communication between the vacuum pipe and the first tank is maintained, and the first vacuum pipe is maintained in the first tank. The water which flowed in from is stored, and the water is prevented from flowing into the second vacuum pipe .

The air / water separation / drainage device according to the present invention includes a pressurized water supply device, a pre-acting valve, and a primary side pipe provided on the primary side of the pre-acting valve and connected to the proximal end side of the pressurized water supplying device. A secondary side pipe provided on the secondary side of the pre-actuating valve to which a sprinkler head is connected, a vacuum pump that always makes negative pressure in the secondary side pipe, the secondary side pipe, and the In a sprinkler fire extinguishing equipment comprising a vacuum pipe connecting a vacuum pump, between a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump, A water / water separation / drainage device provided to be interposed in the vacuum pipe, having a pressure-resistant outer shell, an exhaust port at the upper end, a drain port at the lower end, and an inlet in the internal space, Two tanks provided, at least one of the two tanks being The flow path is controlled so that the inlet is maintained in communication with the first vacuum pipe and the exhaust port is connected with the second vacuum pipe, respectively, and when not drained, the flow path is controlled so as to communicate with each other. During drainage, the tank to be drained is shut off from the other tank, the first vacuum pipe and the second vacuum pipe, and the exhaust port of the tank to be drained is opened to the outside air to increase the inside. After the pressure is reached, the tank is controlled to open the drain port of the tank to be drained to discharge the water stored therein, and the second vacuum is stored by storing the water flowing in from the first vacuum pipe. It is configured to prevent water from entering the pipe and to discharge the stored water, and is interposed between the exhaust port of the tank and the second vacuum pipe that is not on the side of draining during the drainage, From the second vacuum pipe to the tank Those having a check valve for regulating the flow of Cow air.

The air / water separation / drainage device according to the present invention includes a pressurized water supply device, a pre-acting valve, and a primary side pipe provided on the primary side of the pre-acting valve and connected to the proximal end side of the pressurized water supplying device. A secondary side pipe provided on the secondary side of the pre-actuating valve to which a sprinkler head is connected, a vacuum pump that always makes negative pressure in the secondary side pipe, the secondary side pipe, and the In a sprinkler fire extinguishing equipment comprising a vacuum pipe connecting a vacuum pump, between a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump, An air-water separation and drainage device provided so as to be interposed in the vacuum pipe, wherein an exhaust port is provided at the upper end, a drainage port is provided at the lower end, and an inflow port is provided in the internal space. A first tank with a shell and an exhaust port at the upper end and an exhaust at the lower end And a second tank provided below the first tank, and a non-drained flow of the second tank. The inlet and the first tank are communicated with the first vacuum pipe, and at the time of drainage, the inlet of the first tank and the first vacuum pipe are communicated with each other to allow the second tank to flow. An inflow drain selection means for blocking the flow path between the inlet and the first vacuum pipe, and when not draining, the exhaust port of the second tank, the exhaust port of the first tank, and the second The first tank exhaust port and the second vacuum pipe are communicated to each other between the second tank exhaust port and the second vacuum pipe when draining. And a drainage exhaust passage selection means for shutting off the flow path, one end being open to the outside air and the other end being the second tap. An intake valve connected to the exhaust port of the tank, which is normally closed and opened when draining, one end connected to the drain port of the second tank, and the other end of the second tank A drain valve provided in a drain pipe connected to a drain opening that opens below the drain port, and is normally closed and opened when draining, and the drainage inflow path selection means is configured to include the first vacuum. A first inlet pipe connecting a pipe and an inlet of the first tank, a second inlet pipe connecting the first vacuum pipe and an inlet of the second tank, and the first A vacuum valve, a switching valve connected to the first inflow pipe and the second inflow pipe and switching the inflow pipe communicating with the first vacuum pipe, a drain port of the first tank, and the second A connecting pipe that connects to the exhaust port of the tank of the tank, and is provided in the connecting pipe. A connection valve that is sometimes closed, and the drainage exhaust passage selection means includes a first exhaust pipe that connects the second vacuum pipe and the exhaust port of the first tank, and the first exhaust pipe. A second exhaust pipe connecting the second vacuum pipe and the exhaust port of the second tank, and an exhaust shut-off valve provided in the second exhaust pipe, which is open when not draining and closed when draining And is composed of .

The air / water separation / drainage device according to the present invention includes a pressurized water supply device, a pre-acting valve, and a primary side pipe provided on the primary side of the pre-acting valve and connected to the proximal end side of the pressurized water supplying device. A secondary side pipe provided on the secondary side of the pre-actuating valve to which a sprinkler head is connected, a vacuum pump that always makes negative pressure in the secondary side pipe, the secondary side pipe, and the In a sprinkler fire extinguishing equipment comprising a vacuum pipe connecting a vacuum pump, between a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump, An air-water separation and drainage device provided to be interposed in the vacuum pipe, having a pressure-resistant outer shell, an exhaust port at the upper end, a drain port at the lower end, and the exhaust port in the internal space. The inflow port is equipped with two tanks each provided at a position that becomes lower, At least one of the two tanks has a flow path controlled so that the inlet is in communication with the first vacuum pipe and the exhaust port is in communication with the second vacuum pipe. In addition, when draining, the tank for draining is shut off from the other tank, the first vacuum pipe, and the second vacuum pipe, and the exhaust port of the tank for draining is drained. Is opened to the outside air and the inside is set to atmospheric pressure, and then the drain of the tank to be drained is controlled to discharge the water stored in the tank, and the water flowing in from the first vacuum pipe Is stored to prevent water from entering the second vacuum pipe, and the stored water is discharged .

Further, in the steam / water separation / drainage device according to the present invention, the exhaust port of the tank drained during the drainage is connected to the second vacuum pipe without passing through the tank that is not on the side drained during the drainage. When the drained state returns to the non-drained state, the drained tank communicates with the second vacuum pipe, and the drained tank has a negative pressure of a predetermined value or less. In addition, the first vacuum pipe communicates with the drained tank .

  The sprinkler fire extinguishing equipment according to the present invention stores water flowing in from the first vacuum pipe in the second tank when not draining, prevents water from flowing into the second vacuum pipe, The flow path between the vacuum pipe and the second tank is shut off by the hour inflow path selection means and the drainage exhaust path selection means, the intake valve is opened and the inside of the second tank is brought to atmospheric pressure. Opening and discharging the water stored in the second tank, maintaining communication between the vacuum pipe and the first tank, storing the water flowing in from the first vacuum pipe in the first tank, The water is prevented from flowing into the second vacuum pipe. For this reason, the sprinkler fire extinguishing equipment according to the present invention can store the water in the first tank or the second tank even if water flows into the vacuum pipe. The pump will not be overloaded. In addition, the sprinkler fire extinguishing equipment according to the present invention also has an effect that the water flowing into the vacuum pipe and stored in the second tank can be discharged while maintaining the negative pressure of the secondary side pipe and the vacuum pipe. It is done. Moreover, even if the sprinkler fire extinguishing equipment according to the present invention cannot operate the vacuum pump due to a power failure or failure, the first tank and the second tank can maintain the negative pressure for a certain period of time. .

Here, for example, in the sprinkler fire extinguishing equipment according to the present invention, the drainage inflow path selecting means includes a first inflow pipe connecting the first vacuum pipe and the inlet of the first tank, and a second A second inflow pipe connecting the vacuum pipe and the inlet of the second tank, and the first vacuum pipe, the first inflow pipe, and the second inflow pipe are connected to the first vacuum pipe. A switching valve for switching the inflow pipe, a connecting pipe connecting the drain outlet of the first tank and the exhaust outlet of the second tank, and provided in the connecting pipe, open when not draining, and closed when draining The drainage exhaust passage selection means includes a first exhaust pipe connecting the second vacuum pipe and the exhaust port of the first tank, a second vacuum pipe, and a second vacuum pipe. A second exhaust pipe connected to the exhaust port of the tank, and provided in the second exhaust pipe and opened when not drained. On purpose made, an exhaust cutoff valve to be closed during the drainage, in constructed.

  Moreover, the sprinkler fire extinguishing equipment according to the present invention connects the second vacuum pipe and the exhaust port of the first tank via the first exhaust pipe, and the air is directed from the second vacuum pipe to the first tank. By providing the first exhaust pipe with a check valve that restricts the flow of water, the negative pressure in the first tank can be maintained even if the second tank and the vacuum pipe are connected after draining.

In the steam / water separation / drainage device according to the present invention, at least one of the two tanks maintains communication with the first vacuum pipe at the inlet and the second vacuum pipe at the exhaust port. The flow path is controlled so as to communicate with each other when not draining. When draining, the draining tank is shut off from the other tank, the first vacuum pipe and the second vacuum pipe and drained. It is controlled to open the drain port of the tank to be drained and to discharge the water stored in the tank after opening the exhaust port of the tank to outside air and setting the inside to atmospheric pressure. The inflowing water is stored to prevent water from entering the second vacuum pipe, and the stored water is discharged. For this reason, since the steam-water separation / drainage device according to the present invention can store water in the tank even if water flows into the vacuum pipe, the water does not flow into the vacuum pump, and the vacuum pump is overloaded. There is nothing. In addition, the steam-water separation and drainage device according to the present invention can also obtain an effect that water stored in the tank can be discharged by flowing into the vacuum pipe while maintaining the negative pressure of the secondary pipe and the vacuum pipe. . In addition, the steam / water separation / drainage apparatus according to the present invention also provides an effect that a negative pressure can be maintained for a certain time by the tank even if the vacuum pump cannot be operated due to a power failure or failure.

Here, for example, in the steam / water separation / drainage device according to the present invention, the gas is separated between the exhaust port of the tank that is not drained during drainage and the second vacuum pipe, and the second vacuum pipe to the tank. It has a check valve that regulates the flow of air that goes. Thereby, even if it connects the tank and vacuum piping after drainage, the negative pressure in the tank which is not the side which drains at the time of drainage can be maintained.

Further, for example, the air / water separation / drainage device according to the present invention includes a first tank and a second tank provided below the first tank as the two tanks. The air / water separation / drainage device communicates the inlet of the second tank and the first tank with the first vacuum pipe when not draining, and the inlet and the first tank of the first tank when draining. The drainage inflow passage selection means for blocking the flow path between the inflow port of the second tank and the first vacuum piping by communicating with the vacuum piping of the second tank, and the exhaust port of the second tank when not draining And the exhaust port of the first tank and the second vacuum pipe are communicated, and at the time of drainage, the exhaust port of the first tank and the second vacuum pipe are communicated, and the exhaust port of the second tank and the second vacuum pipe are connected. The drainage exhaust path selection means for blocking the flow path between the two vacuum pipes, and an intake pipe having one end opened to the outside air and the other end connected to the exhaust port of the second tank, An intake valve that is open when draining, one end connected to the drain of the second tank, and the other end of the second tank A drain valve connected to a drain opening that opens to the lower side and is normally closed and opened when draining, and the drainage inflow path selection means includes a first vacuum pipe and a first drain pipe. A first inflow pipe connecting the inflow port of the first tank, a second inflow pipe connecting the first vacuum pipe and the inflow port of the second tank, the first vacuum pipe, the first inflow A switching valve that is connected to the pipe and the second inflow pipe and switches the inflow pipe that communicates with the first vacuum pipe; a connection pipe that connects the drain port of the first tank and the exhaust port of the second tank; The connecting pipe is provided with a connecting valve that is open when not draining and is closed when draining, and the exhaust path selection means for draining includes the second vacuum pipe and the exhaust port of the first tank. A first exhaust pipe connecting the second vacuum pipe and a second exhaust pipe connecting the exhaust port of the second tank; Provided in the second exhaust pipe, in an open state when undrained, an exhaust cutoff valve to be closed during the drainage, in constructed.

Further, for example, in the steam / water separation / drainage device according to the present invention, the inlets of the two tanks are provided at positions below the exhaust port in the internal space of the pressure-resistant outer shell.
Further, for example, in the air / water separation / drainage device according to the present invention, the exhaust port of the tank drained during drainage is connected to the second vacuum pipe without passing through the tank that is not drained during drainage. When returning from the state to the non-drainage state, the first vacuum pipe is connected when the drained tank and the second vacuum pipe communicate with each other and the inside of the drained tank has a negative pressure lower than a predetermined value. And the drained tank.

It is a lineblock diagram showing the sprinkler fire extinguishing equipment concerning Embodiment 1 of the present invention. It is a block diagram which shows the steam-water separation / drainage apparatus of the sprinkler fire extinguishing equipment which concerns on Embodiment 1 of this invention. It is a figure explaining operation | movement when the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention is a non-drainage state. It is explanatory drawing explaining the drainage preparation operation | movement at the time of the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention drains. It is explanatory drawing explaining the drainage preparation operation | movement at the time of the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention drains. It is explanatory drawing explaining the drainage operation | movement of the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing explaining the preparatory operation | movement for the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention to return from a drainage state to a non-drainage state. It is explanatory drawing explaining the preparatory operation | movement for the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention to return from a drainage state to a non-drainage state. It is explanatory drawing explaining the state which the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention returned to the non-drainage state. It is a block diagram which shows the air-water separation / drainage apparatus of the sprinkler fire extinguishing equipment which concerns on Embodiment 2 of this invention. It is a figure explaining operation | movement when the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention is a non-drainage state. It is explanatory drawing explaining the waste_water | drain preparation operation | movement at the time of the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention drains. It is explanatory drawing explaining the waste_water | drain preparation operation | movement at the time of the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention drains. It is explanatory drawing explaining the drainage operation | movement of the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention. It is explanatory drawing explaining the preparatory operation | movement for the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention to return from a drainage state to a non-drainage state. It is explanatory drawing explaining the preparatory operation | movement for the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention to return from a drainage state to a non-drainage state. It is explanatory drawing explaining the state which the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention returned to the non-drainage state.

Embodiment 1 FIG.
Hereinafter, the sprinkler fire extinguishing equipment according to Embodiment 1 will be described.

FIG. 1 is a configuration diagram illustrating a sprinkler fire extinguishing facility according to Embodiment 1 of the present invention. Moreover, FIG. 2 is a block diagram which shows the air-water separation / drainage apparatus of this sprinkler fire extinguishing equipment.
First, with reference to FIGS. 1-2, the structure of the sprinkler fire extinguishing equipment which concerns on this Embodiment 1 is demonstrated.

The sprinkler fire extinguishing equipment of the present embodiment includes a sprinkler head 2, a pre-actuating valve 22, a primary side pipe 11, a secondary side pipe 12, vacuum pipes 14 a and 14 b, a vacuum pump 24, a running water shut-off valve 31, and a head operation detection device 46. , Vacuum switches 41 and 53, a pressurized water supply device 21, and the like.
Here, the vacuum pipe 14a corresponds to the first vacuum pipe of the present invention, and the vacuum pipe 14b corresponds to the second vacuum pipe of the present invention.

  The protective section 1 is provided with a plurality of sprinkler heads 2. The protective compartment 1 is provided with a fire detector 3 that detects a fire that has occurred in the protective compartment 1. The fire detector 3 is electrically connected to the fire receiver 4, and the fire receiver 4 having received a signal indicating that the fire detector 3 has detected a fire makes a fire determination. When the fire receiver 4 determines that there is a fire, it sends a fire signal to the fire extinguishing system control panel 5. Further, the fire extinguishing system control panel 5 detects, through the relay 51, a remote start valve 22b, which is an electric pilot valve that drives the pre-actuating valve 22, and water flow for extinguishing water due to the opening of the pre-acting valve 22. The signal switch 22a, the release valve 47, the vacuum switch 41, and the head operation detection device 46 are electrically connected. The fire extinguishing system control panel 5 is activated by either the vacuum switch 41 that operates at a predetermined pressure or the head operation detection device 46 that operates when the pressure increase per unit time exceeds a predetermined value. It is determined whether the head 2 is activated. Further, the pressurized water supply device 21 is electrically connected to the fire extinguishing pump control panel 6 and is started by a pressure drop accompanying opening of the pre-actuating valve 22 to suck up water in the fire extinguishing water tank 10.

  Each of the plurality of sprinkler heads 2 is connected to the falling pipe 13. Each of the falling pipes 13 is connected to the secondary side pipe 12. One end of the secondary side pipe 12 is connected to one end of the pre-actuating valve 22 that is normally closed and is electrically opened in the event of a fire. The other end of the pre-actuating valve 22 is connected to one end of the primary side pipe 11. The other end (base end side) of the primary side pipe 11 is connected to the discharge port of the pressurized water supply device 21. The primary side pipe 11 is provided with a flow rate control means 23 for limiting the flow rate of the fire-extinguishing water discharged by a constant flow valve or an orifice to a predetermined value. This is to prevent the fire hammer water from being supplied at an excessive flow rate toward the secondary side pipe 12 having a negative pressure when the pre-actuating valve 22 is opened, thereby preventing water hammer. The pressurized water supply device 21, the primary side pipe 11, the flow rate control means 23, and the pre-actuating valve 22 constitute a water supply device that pumps fire-extinguishing water to the secondary side pipe 12.

  On the other hand, the other end of the secondary pipe 12 is connected to one end of the terminal test valve 25. A drain pipe 16 is connected to the other end of the terminal test valve 25. When the secondary side pipe 12 is filled by a water leak test, inspection, etc. of the sprinkler fire extinguishing equipment, the water filled in the secondary side pipe 12 is a drain valve (not shown) provided in the end test valve 25 and the pre-actuating valve 22. It is discharged outside by opening. Normally, the end test valve 25 is in a closed state.

  In addition, one end of a vacuum pipe 14 a is connected to the secondary side pipe 12. A steam / water separation / drainage device 7 to be described later is connected to the other end of the vacuum pipe 14a. Then, the vacuum pump 24 is connected via the vacuum water separation / drainage device 7 and the vacuum pipe 14b, and the vacuum pipes 14a and 14b and the secondary side pipe 12 are set to a negative pressure.

  The vacuum pipe 14 a includes a flowing water shut-off valve 31 and a vacuum switch 41 that close the vacuum pipe 14 a in conjunction with the opening of the pre-actuating valve 22 from the connection side to the secondary pipe 12 toward the vacuum pump 24. A head operation detection device 46 that detects the opening of the sprinkler head 2 when the pressure increase is activated at a predetermined value or more, and an orifice 42 are sequentially provided. Further, a vacuum switch 53 is connected to the vacuum pipe 14a between the steam / water separation / drainage device 7 connected to the vacuum pump 24 and the orifice 42, so that the internal pressure of the vacuum pipe 14a is not more than a predetermined value. The vacuum pump 24 is controlled via the vacuum pump control panel 52.

As shown in FIG. 2, the steam / water separation / drainage device 7 is provided so as to be interposed between the vacuum pipe 14a and the vacuum pipe 14b, and even if water flows into the vacuum pipe 14a, the vacuum pipe 14b. And prevent water from flowing into the vacuum pump 24.
The steam / water separation / drainage device 7 includes a first tank 71 and a second tank 72. The first tank 71 has a tank body 71e which is a pressure-resistant outer shell having an exhaust port 71b at the upper end, a drain port 71c at the lower end, and an inflow port 71a in the internal space. The second tank 72 has a tank body 72e which is a pressure-resistant outer shell having an exhaust port 72b at the upper end, a drain port 72c at the lower end, and an inflow port 72a in the internal space. The first tank 71 and the second tank 72 are spaced apart so as to have a height difference. That is, the second tank 72 is disposed below the first tank 71. More specifically, the first tank 71 and the second tank 72 are arranged so that the upper end portion of the second tank 72 is below the lower end portion of the first tank 71.

  The first tank 71 and the second tank 72 are connected to the vacuum pipe 14a via the drainage inflow path selection means, and are connected to the vacuum pipe 14b via the drainage exhaust path selection means. Here, the drainage inflow path selection means communicates the inlet 72a and the first tank 71 of the second tank 72 with the vacuum pipe 14a when not draining, and the flow of the first tank 71 when draining. The inlet 71a and the vacuum pipe 14a are connected to block the flow path between the inlet 72a of the second tank 72 and the vacuum pipe 14a. Further, the drainage exhaust path selection means communicates the exhaust port 72b of the second tank 72 and the exhaust port 71b of the first tank 71 with the vacuum pipe 14b when not draining, and the first tank 71 when draining. The exhaust port 71b and the vacuum pipe 14b are communicated to block the flow path between the exhaust port 72b of the second tank 72 and the vacuum pipe 14b.

  The steam / water separation / drainage device 7 according to the first embodiment includes an inflow pipe 77a corresponding to the first inflow pipe of the present invention, a connection pipe 73a, and a connection valve 73 as drainage inflow path selection means. ing. Further, as a drainage exhaust path selection means, an exhaust pipe 75a corresponding to the first exhaust pipe of the present invention, an exhaust pipe 74a corresponding to the second exhaust pipe of the present invention, and an exhaust cutoff valve 74 are provided. Yes.

  Specifically, the vacuum pipe 14a on the secondary side pipe 12 side and the inlet 71a of the first tank 71 are connected by an inflow pipe 77a. The first tank 71 and the second tank 72 are connected by a connection pipe 73a provided with a connection valve 73 which is a normally open on-off valve (open when not drained and closed when drained). When not drained, they communicate with each other. More specifically, the drain port 71c of the first tank 71 and the inflow port 72a of the second tank 72 are connected by a connecting pipe 73a. The exhaust port 71b of the first tank and the vacuum pipe 14b on the vacuum pump 24 side are connected by an exhaust pipe 75a. The exhaust port 72b of the second tank 72 and the vacuum pipe 14b on the side of the vacuum pump 24 are normally open / close valves (exhaust shut-off valve 74 is opened when not drained and closed when drained). The exhaust pipe 74a is connected. Accordingly, the first tank 71 and the second tank 72 communicate with the vacuum pump 24 during non-drainage, so that the internal space is at a negative pressure.

  Thereby, when not draining (that is, when the connecting valve 73 is open), for example, when the pre-actuating valve 22 is closed and the flowing water shut-off valve 31 is open and water flows into the vacuum pipe 14a, the vacuum is applied. The water flowing into the pipe 14a flows into the second tank 72 through the inflow pipe 77a, the inflow port 71a of the first tank 71, the drain port 71c of the first tank 71, and the connection pipe 73a. Then, water is stored in the second tank 72 so that the water does not flow out to the vacuum pipe 14b on the vacuum pump 24 side. That is, the first tank 71, the second tank 72, and the normally open connecting valve 73 constitute a steam / water separation means when not draining.

  In the first embodiment, the air flow from the vacuum pipe 14b to the first tank 71 is connected to the exhaust pipe 75a connecting the exhaust port 71b of the first tank and the vacuum pipe 14b on the vacuum pump 24 side. A restricting check valve 75 is provided. The operation of the check valve 75 will be described later.

Moreover, in this Embodiment 1, it is a normally-closed on-off valve as a draining means used at the time of draining which discharges the water stored in the second tank 72 (closed when not draining and opened when draining). A drain valve 78, a drain pipe 79, an intake valve 76 that is a normally closed on-off valve, an intake pipe 76a, and the like are provided.
Specifically, one end of the drainage pipe 79 provided with the drainage valve 78 is connected to the drainage port 72c of the second tank 72, and the other end of the drainage pipe 79 is connected to the discharge port 79a opened below the drainage port 72c. Connected. One end of the intake pipe 76a provided with the intake valve 76 is connected to the exhaust port 72b of the second tank 72, and the other end of the intake pipe 76a is connected to the intake port 76b opened to the outside air.

  Next, with reference to FIGS. 3-9, operation | movement of the sprinkler fire extinguishing equipment which concerns on this Embodiment 1 is demonstrated. The operation of the sprinkler fire extinguishing equipment shown in FIG. 1 is disclosed in Patent Documents 2 and 3 except for the air / water separation / drainage device 7, so the description thereof is applied mutatis mutandis and omitted. Therefore, based on FIGS. 3-9, operation | movement of the steam-water separation drainage apparatus 7 is demonstrated.

(1) Non-drainage state FIG. 3 is a diagram for explaining an operation when the steam-water separation / drainage device according to Embodiment 1 of the present invention is in a non-drainage state.
It is assumed that water has flowed into the vacuum pipe 14a connected to the secondary side pipe 12 via the running water cutoff valve 31 for some reason. For some reason, for example, when the secondary pipe 12 is filled with water, the flowing water shut-off valve 31 fails and cannot be closed, or when the foreign water is caught in the flowing water shut-off valve 31 and cannot be closed, It is conceivable that the running water shut-off valve 31 is stuck and cannot move.

  Since the vacuum pipe 14a is sucked by the vacuum pump 24 via the air / water separation drainage device 7 and the vacuum pipe 14b, the water flowing into the vacuum pipe 14a goes to the inlet 71a of the first tank 71, Into one tank 71. At this time, since the exhaust port 71b of the first tank 71 which is evacuated is provided at the upper end of the internal space, the water flowing into the first tank 71 does not go to the exhaust port 71b. For this reason, the water that flows into the internal space of the first tank 71 (hereinafter also referred to as inflow water W) is connected to the second tank 72 via the drain pipe 71c and the connection pipe 73a in which the connection valve 73 is open. Head to the inlet 72a.

  During non-drainage, the second tank 72 is connected to the vacuum pipe 14b through the inlet 72a, the connecting pipe 73a, the inner space of the first tank 71, the exhaust port 71b and the exhaust pipe 75a provided with the check valve 75. Furthermore, it is sucked from the vacuum pipe 14b through the exhaust port 72b and the exhaust pipe 74a, and has the same negative pressure as the first tank 71. For this reason, even if the connecting pipe 73a is filled with the inflowing water, the inside of the second tank 72 is sucked from the vacuum pipe 14b through the exhaust port 72b and the exhaust pipe 74a. There is no difference in internal pressure between the second tank 72 and the second tank 72. Therefore, the inflow water W toward the inflow port 72a flows into the second tank 72 by gravity. At this time, since the drain valve 78 is closed, the inflow water W does not flow out from the drain port 72 c of the second tank 72 but is stored in the internal space of the second tank 72. The inflow water W that has flowed into the second tank 72 is allowed to be stored until the second tank 72 becomes full. Until then, the water level of the inflowing water W does not reach the exhaust port 72b provided at the upper end of the internal space, so that water does not flow out to the vacuum pipe 14b.

  If the exhaust cutoff valve 74 is controlled to close when the second tank 72 is full, the inflow water W can be prevented from flowing out from the exhaust port 72b to the vacuum pipe 14b, and the first The inflow water W can be stored in the tank 71. Also in this case, the inflow water W does not flow out to the vacuum pipe 14b until the surface of the inflow water W reaches the exhaust port 71b. Here, by providing a water level detection means (not shown) in the second tank 72, it becomes possible to grasp the height of the water surface of the inflowing water W that has flowed into the second tank 72.

(2) Drainage Next, the operation of draining the influent water W stored in the second tank 72 will be described with reference to FIGS.

  4 and 5 are explanatory diagrams for explaining the drainage preparation operation when the steam / water separation / drainage device according to Embodiment 1 of the present invention drains. FIG. 6 is an explanatory diagram for explaining the drainage operation of the steam / water separation / drainage apparatus according to Embodiment 1 of the present invention.

  First, as preparation for drainage, the connection valve 73 and the exhaust cutoff valve 74 are closed, and the second tank 72 is shut off from the first tank 71 and the vacuum pipes 14a and 14b (see FIG. 4). After that, the intake valve 76 is opened (opened). When the intake valve 76 is opened, outside air flows into the second tank 72 through the intake port 76b, the intake pipe 76a, and the exhaust port 72b that are open to the outside air, and the internal space of the second tank 72 is at normal pressure. Become. At this time, since the second tank 72 is disconnected from the first tank 71 and the vacuum pipes 14a and 14b in advance, the outside air does not flow into them, and the first tank 71, the vacuum pipe 14a, The negative pressure of 14b and the secondary side piping 12 is maintained (refer FIG. 5).

  When the drainage preparation is completed, the drainage valve 78 is opened thereafter, and the inflow water W stored in the second tank 72 is drained to the outside via the drainage port 72c, the drainage pipe 79, and the discharge port 79a ( (See FIG. 6).

  That is, the air / water separation / drainage device 7 maintains the negative pressure of the first tank 71 and the vacuum pipes 14a and 14b and the negative pressure of the secondary pipe 12 in the state of the drainage preparation and the drainage. Therefore, even if the sprinkler head 2 is damaged and water remains in the falling pipe 13, water does not leak.

(3) Return Next, with reference to FIGS. 7-9, the operation | movement which returns to a non-drainage state after draining the inflow water W is demonstrated.

  7 and 8 are explanatory diagrams for explaining a preparatory operation for the air-water separation / drainage device according to Embodiment 1 of the present invention to return from the drained state to the non-drained state. Moreover, FIG. 9 is explanatory drawing explaining the state which the steam-water separation drainage apparatus which concerns on Embodiment 1 of this invention returned to the non-drainage state.

  First, the drain valve 78 and the intake valve 76 are closed, and the second tank 72 is sealed (see FIG. 7). Next, the exhaust shut-off valve 74 is opened, and the exhaust port 72b, the exhaust pipe 74a, and the vacuum pipe 14b are communicated with each other and sucked from the vacuum pump 24 to make the second tank 72 have a negative pressure again. (See FIG. 8).

  Immediately after the exhaust shut-off valve 74 is opened, normal pressure air in the second tank 72 flows into the vacuum pipe 14b through the exhaust pipe 74a, and the vacuum pipe 14b is brought to a negative pressure by suction by the vacuum pump 24. Until it recovers, the pressure in the vacuum pipe 14b temporarily rises. However, since the check valve 75 is provided in the inflow pipe 77 a that connects the vacuum pipe 14 b and the exhaust port 71 b of the first tank 71, the air from the second tank 72 flows into the first tank 71. No, the negative pressure in the first tank 71 is maintained. Therefore, air from the second tank 72, which is at normal pressure, does not flow into the vacuum pipe 14a and the secondary side pipe 12, and the negative pressure is maintained.

Thus, after the inside of the second tank 72 returns to the negative pressure again, the connecting valve 73 can be opened to return to the non-drainage state (see FIG. 9).
A pressure measuring means (not shown) for measuring the pressure in the second tank 72 is provided, and the pressure measurement is performed when the pressure in the second tank 72 becomes a negative pressure equal to or lower than a preset pressure upper limit value. When the means detects, the connection valve 73 may be opened to return to the non-drainage state. By comprising in this way, the pressure fluctuation in the 1st tank 71 when the connection valve 73 is open | released can be suppressed.

(4) Air-water separation during drainage Next, referring to FIGS. 4 to 8, when the drainage means is in the state of the drainage or the drainage preparation, water flows into the vacuum pipe 14a. The operation will be described.

As shown in FIGS. 4 to 8, since the connection valve 73 and the exhaust cutoff valve 74 are closed from the start of drainage preparation to the return to the non-drainage state, the inflow that flows into the first tank 71. The water W cannot flow into the second tank 72 but is stored in the first tank 71.
However, as described above, the inflow water W stored in the first tank 71 does not flow into the vacuum pipe 14b until the water level reaches the exhaust port 71b. Accordingly, the drainage of the second tank 72 is completed during this period, and the state is returned to the non-drainage state.

  That is, when the drainage means is in the state of the drainage or the drainage preparation, the steam / water separation / drainage device 7 stores the water flowing into the vacuum pipe 14a in the first tank 71 and supplies the water to the vacuum pipe 14b. It is provided with air / water separation means during drainage to prevent water from flowing. Even when the second tank 72 is in a state of drainage preparation or drainage and cannot store water, water does not flow out to the vacuum pipe 14b.

  As described above, the sprinkler fire extinguishing apparatus according to the first embodiment can store the water in the first tank 71 or the second tank 72 even if water flows into the vacuum pipe 14a. Water does not flow in, and the vacuum pump 24 is not overloaded. Further, the sprinkler fire extinguishing equipment according to the first embodiment flows into the vacuum pipe 14a and is stored in the second tank 72 while maintaining the negative pressure of the secondary pipe 12 and the vacuum pipe 14a of the pre-actuating valve 22. Water can be discharged. Further, in the sprinkler fire extinguishing equipment according to the first embodiment, the first tank 71 and the second tank 72 are maintained at a negative pressure even when the vacuum pump 24 cannot be operated due to a power failure or failure during normal times. As long as the negative pressure can be maintained for a certain period of time. In addition, the sprinkler fire extinguishing equipment according to the first embodiment includes a check valve 75 so that the fluid flows only in the direction from the exhaust port 71b to the vacuum pipe 14b at the outlet of the exhaust port 71b of the first tank 71. Even if the exhaust shut-off valve 74 is opened in order to return to the non-drainage state after draining, that is, even if the second tank 72 brought to normal pressure by drainage communicates with the vacuum pipe 14b, The pressure in the tank 71 of 1 was not increased. That is, since the negative pressure in the first tank 71 is maintained, the negative pressure is maintained without being affected by the internal pressure of the vacuum pipe 14a and the secondary side pipe 12.

Embodiment 2. FIG.
The steam-water separation / drainage device according to the present invention is not limited to the configuration shown in the first embodiment, and may be configured as follows, for example.

FIG. 10: is a block diagram which shows the steam-water separation drainage apparatus of the sprinkler fire extinguishing equipment which concerns on Embodiment 2 of this invention.
First, with reference to FIG.1 and FIG.10, the structure of the sprinkler fire extinguishing equipment which concerns on this Embodiment 2 is demonstrated. In addition, the same code | symbol is attached | subjected to the structure same as Embodiment 1, and the description is abbreviate | omitted.

  The sprinkler fire extinguishing equipment according to the second embodiment is substantially the same as that of the first embodiment, and only the air / water separation / drainage device 70 corresponding to the steam / water separation / drainage device 7 of the first embodiment is different. The air / water separation / drainage device 70 has a configuration similar to that of the air / water separation / drainage device 7 and is a modification thereof. Note that the steam / water separation / drainage device 7 in FIG. 1 is read as the steam / water separation / drainage device 70.

  Here, a configuration different from the first embodiment in the present embodiment will be described below.

(1) According to the difference in configuration, the reference numeral 70 of the steam / water separation / drainage device corresponding to the steam / water separation / drainage device 7 of the first embodiment is set to 70, and similarly, the first tank corresponding to the first tank 71 The reference number of the second tank corresponding to the second tank 72 is set to 720. Further, in order to match with the above, reference numerals 71a, 71b, 71c, 71e, 72a, 72b, 72c, and 72e are designated as reference numerals 710a, 710b, 710c, 710e, 720a, 720b, 720c, and 720e, respectively.

(2) In the steam / water separation / drainage device 70 according to the second embodiment, as drainage inflow path selection means, an inflow pipe 77a corresponding to the first inflow pipe of the present invention and the second inflow pipe of the present invention Inflow pipe 77b, a switching valve 77 that is a three-way valve, a connecting pipe 730a, and a connecting valve 730.

  Specifically, the vacuum pipe 14a on the secondary side pipe 12 side and the inlet 710a of the first tank 710 were connected by an inflow pipe 77a. The vacuum pipe 14a on the secondary side pipe 12 side and the inflow port 720a of the second tank 720 were connected by an inflow pipe 77b. The switching valve 77, which is a three-way valve, is configured to connect the vacuum pipe 14a, the inflow pipe 77a, and the inflow pipe 77b, and to switch the inflow pipe that communicates with the vacuum pipe 14a. More specifically, at the time of non-drainage, the switching valve 77 causes the vacuum pipe 14a and the inlet 720a of the second tank 720 to communicate with each other via the inflow pipe 77b, and allows the inflow water W to directly flow into the second tank 720. The configuration. That is, when not drained, the vacuum pipe 14a and the inlet 710a of the first tank 710 are not communicated with each other. On the other hand, during the drainage preparation and the drainage, the switching valve 77 causes the vacuum pipe 14a, the vacuum pipe 14a, and the inflow port 710a of the first tank 710 to communicate with each other via the inflow pipe 77a. The flow path is switched so as to flow into the tank 710.

In addition, the connection pipe 730a corresponding to the connection pipe 73a whose one end is connected to the second tank 720 is connected to the exhaust port 720b corresponding to the exhaust port 72b instead of the inflow port 720a corresponding to the inflow port 72a. Further, in order to match this, the reference numeral of the connection valve 73 is 730.
That is, in the second embodiment, when not drained, the second tank 720 is connected to the vacuum pipe on the secondary side pipe 12 via the connecting pipe 730a, the first tank 710, the inflow pipe 77b, and the switching valve 77. 14a is configured to communicate with 14a.

  Next, based on FIGS. 11-17, operation | movement of the steam-water separation / drainage apparatus 70 which concerns on this Embodiment 2 is demonstrated. Note that the description of the same operation as that in Embodiment 1 is omitted.

(1) Non-drainage state FIG. 11: is a figure explaining operation | movement when the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention is a non-drainage state.
At the time of non-drainage, the second tank 720 is sucked from the vacuum pipe 14b through the exhaust port 720b, the drain port 710c, the exhaust port 710b, and the check valve 75. Further, the second tank 720 is connected to the exhaust port 720b and the exhaust pipe 74a. The first tank 710 has the same negative pressure as that of the first tank 710. For this reason, the water that has flowed into the vacuum pipe 14 a goes to the inlet 720 a of the second tank 720 and flows into the second tank 720. Since the exhaust port 720b of the second tank 720 that is evacuated is provided at the upper end of the internal space, the water level of the water W that has flowed into the second tank 720 does not reach the upper end of the second tank 720. As long as the inflow water W does not go to the exhaust port 720b.

  If the exhaust cutoff valve 74 is controlled to close when the second tank 720 is full, the inflow water W can be prevented from flowing out from the exhaust port 720b to the vacuum pipe 14b, and the first Inflow water W can be stored in the tank 710. Also in this case, the inflow water W does not flow out to the vacuum pipe 14b until the surface of the inflow water W reaches the exhaust port 710b. Here, by providing a water level detection means (not shown) in the second tank 720, it becomes possible to grasp the height of the water surface of the water W flowing into the second tank 720.

(2) Drainage Next, the operation of draining the inflow water W stored in the second tank 720 will be described with reference to FIGS.

  FIG.12 and FIG.13 is explanatory drawing explaining the drainage preparation operation | movement at the time of the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention draining. FIG. 14 is an explanatory view for explaining the drainage operation of the steam / water separation / drainage apparatus according to Embodiment 2 of the present invention.

  First, as preparation for drainage, the switching valve 77 is switched to the side communicating with the inlet 710a of the first tank 710, the connection valve 730 and the exhaust cutoff valve 74 are closed, and the second tank 720 is closed to the first tank 710. And it shuts off from the vacuum pipes 14a and 14b (see FIG. 12). After that, the intake valve 76 is opened, and the inside of the second tank 720 is set to normal pressure. Since the second tank 720 is previously disconnected from the first tank 710 and the vacuum pipes 14a and 14b, the outside air does not flow into them, and the first tank 710, the vacuum pipes 14a and 14b, and the two The negative pressure in the secondary pipe 12 is maintained (see FIG. 13).

  When the drainage preparation is completed, the drain valve 78 is opened thereafter, and the water W stored in the second tank 720 is drained to the outside through the drain port 720c, the drain pipe 79, and the drain port 79a (FIG. 14). reference).

  That is, the air / water separation / drainage apparatus 70 maintains the negative pressure of the first tank 710 and the vacuum pipes 14a and 14b and the negative pressure of the secondary pipe 12 in the state of the drainage preparation and the drainage. Therefore, even if the sprinkler head 2 is damaged and water remains in the falling pipe 13, water does not leak.

(3) Return Next, with reference to FIGS. 15-17, the operation | movement which returns to a non-drainage state after draining the inflow water W is demonstrated.

  FIG.15 and FIG.16 is explanatory drawing explaining the preparatory operation | movement for the air-water separation drainage apparatus which concerns on Embodiment 2 of this invention to return from a drainage state to a non-drainage state. Moreover, FIG. 17 is explanatory drawing explaining the state which the steam-water separation drainage apparatus which concerns on Embodiment 2 of this invention returned to the non-drainage state.

  First, the drain valve 78 and the intake valve 76 are closed, and the second tank 720 is sealed (see FIG. 15). Next, the exhaust shut-off valve 74 is opened, the exhaust port 720b, the exhaust pipe 74a, and the vacuum pipe 14b are communicated and sucked from the vacuum pump 24, so that the inside of the second tank 720 is made negative again (see FIG. 16). ).

  Immediately after the exhaust shut-off valve 74 is opened, normal pressure air in the second tank 720 flows into the vacuum pipe 14b through the exhaust pipe 74a, and the vacuum pipe 14b is sucked by the vacuum pump 24 to become negative pressure. Until it recovers, the pressure in the vacuum pipe 14b temporarily rises. However, since the check valve 75 is provided between the vacuum pipe 14b and the exhaust port 710b of the first tank 710, air from the second tank 720 does not flow into the first tank 710. The negative pressure in the first tank 710 is maintained. Therefore, air from the second tank 720, which has become normal pressure, does not flow into the vacuum pipe 14a and the secondary pipe 12, and the negative pressure is maintained.

Thus, after the inside of the second tank 720 returns to the negative pressure again, the connection valve 730 is opened, and the switching valve 77 is switched to the side communicating with the inflow pipe 77b and the inflow port 720a. The state can be restored (see FIG. 17).
As in the first embodiment, a pressure measuring means (not shown) for measuring the pressure in the second tank 720 is provided, and the negative pressure in which the pressure in the second tank 720 is equal to or lower than a preset pressure upper limit value. The connecting valve 730 may be opened when the pressure measuring means detects that the state has been reached, and may be returned to the non-drained state. By comprising in this way, the pressure fluctuation in the 1st tank 710 when the connection valve 730 is open | released can be suppressed.

(4) Air-water separation during drainage Next, referring to FIGS. 12 to 16, when the drainage means is in the state of the drainage or the drainage preparation, water flows into the vacuum pipe 14a. The operation will be described.

As shown in FIGS. 12 to 16, the connection valve 730 and the exhaust cutoff valve 74 are closed until the drainage is restored after the drainage preparation is started, and the switching valve 77 is connected to the inlet of the first tank 710. Since switching to the 710a side, the inflow water W that has flowed into the first tank 710 cannot flow into the second tank 720 but is stored in the first tank 710.
However, as described above, the inflow water W stored in the first tank 710 does not flow out to the vacuum pipe 14b until it reaches the exhaust port 710b. Therefore, during this time, the drainage of the second tank 720 is completed and returned to the non-drainage state.

  That is, when the drainage means is in the state of the drainage or the drainage preparation, the steam / water separation / drainage device 70 stores the water flowing into the vacuum pipe 14a in the first tank 710 and supplies the water to the vacuum pipe 14b. It is provided with air / water separation means during drainage to prevent water from flowing. Even when the second tank 720 is in the state of drainage preparation or drainage and cannot store water, water does not flow out to the vacuum pipe 14b.

  As described above, the sprinkler fire extinguishing equipment according to the second embodiment can be stored in the first tank 710 or the second tank 720 even when water flows into the vacuum pipe 14a, as in the first embodiment. Water does not flow into the vacuum pump 24, and the vacuum pump 24 is not overloaded. Further, the water that flows into the vacuum pipe 14a and is stored in the second tank 720 can be discharged while maintaining the negative pressure of the secondary side pipe 12 and the vacuum pipe 14a of the pre-actuating valve 22. Further, in the sprinkler fire extinguishing equipment according to the second embodiment, the first tank 710 and the second tank 720 are kept at a negative pressure even when the vacuum pump 24 cannot be operated due to a power failure or failure in normal times. As long as the negative pressure can be maintained for a certain period of time. Further, the sprinkler fire extinguishing equipment according to the second embodiment includes a check valve 75 so that the fluid flows only in the direction from the exhaust port 710b to the vacuum pipe 14b at the outlet of the exhaust port 710b of the first tank 710. Even if the exhaust shut-off valve 74 is opened in the process of returning to the non-drainage state after draining, that is, even if the second tank 720 brought to normal pressure by drainage communicates with the vacuum pipe 14b, The pressure in the tank 710 of 1 was prevented from increasing. That is, since the negative pressure in the first tank 710 is maintained, the negative pressure is maintained without being affected by the internal pressure of the vacuum pipe 14a and the secondary side pipe 12.

Embodiment 3 FIG.
Based on the technical idea disclosed in the first and second embodiments, a new effect can be obtained by slightly changing the configuration and operation. The embodiment will be disclosed below. For convenience of explanation, the same reference numerals as those in Embodiments 1 and 2 are given, and different configurations and operations are shown below.

First, the configuration of the sprinkler fire extinguishing facility according to the third embodiment will be described.
In the third embodiment, the valves constituting the drainage inflow path selection means and the drainage exhaust path selection means in the first or second embodiment (connection valves 73 and 730, exhaust cutoff valve 74, switching valve 77). The intake valve 76 and the drain valve 78 are motorized valves.

  In the third embodiment, the first water level detection (not shown) that detects that the height of the water accumulated in the second tanks 72 and 720 is equal to or higher than a predetermined upper limit value set in advance. Means. The second tanks 72 and 720 are provided with second water level detection means (not shown) that detects that the height of the water is equal to or lower than a predetermined lower limit value set in advance. Then, based on the water level detection results of the first water level detection means and the second water level detection means, the motor operated valves (connection valves 73 and 730, exhaust cutoff valve 74, intake valve 76, switching valve 77, drain valve) 78) is provided for automatically controlling 78). This control means may be provided in the fire fighting system control panel 5 or may be provided separately from the fire fighting system control board 5.

Next, the operation of the present embodiment will be described.
When the first water level detection means detects a water level that is equal to or higher than the predetermined upper limit value, the control means is configured to operate the motor-operated valve (the connection valves 73 and 730, the exhaust cutoff valve 74, the intake valve 76, the switching valve 77, the drainage valve). The motorized valves (the coupling valves 73 and 730, the exhaust cutoff valve 74, the intake valve 76, the switching valve 77, and the drain valve 78) are automatically controlled so that the valve 78) is operated to drain the water from the second tanks 72 and 720. To do. Further, the control means may be configured such that when the second water level detection means detects a water level that is equal to or lower than the predetermined lower limit value, the motor-operated valve (connection) The valves 73 and 730, the exhaust cutoff valve 74, the intake valve 76, the switching valve 77, and the drain valve 78) are automatically controlled.

  That is, since the sprinkler fire extinguishing equipment according to the third embodiment is provided with the automatic control means, when a predetermined amount of water has accumulated in the second tanks 72 and 720, the same as in the first or second embodiment. When drainage is automatically performed and drainage is completed, control can be performed so as to automatically return to the non-drainage state in the same manner as in the first or second embodiment.

Embodiment 4 FIG.
Based on the technical idea disclosed in the third embodiment, the same effect can be obtained by slightly changing the configuration and operation. The embodiment will be disclosed below. As in the third embodiment, for convenience of explanation, the same reference numerals as those in the first and second embodiments are given, and different configurations and operations are shown below.

First, the configuration of the sprinkler fire extinguishing facility according to the fourth embodiment will be described.
In the fourth embodiment, as in the third embodiment, the valves (the connecting valves 73 and 730, the exhaust cutoff valve 74, the switching valve 77) constituting the drainage inflow path selection means and the drainage exhaust path selection means, the intake air The valve 76 and the drain valve 78 are motorized valves. Further, as in the third embodiment, the first water level (not shown) for detecting that the height of the water accumulated in the second tanks 72 and 720 is equal to or higher than a predetermined upper limit value set in advance. A detection means is provided. And unlike Embodiment 3, based on the said 1st water level detection means water level detection result and the preset 1st predetermined time, the said electric valve (the connection valves 73 and 730, the exhaust cutoff valve 74, the intake valve) 76, a control means (not shown) for automatically controlling the switching valve 77 and the drain valve 78). This control means may be provided in the fire fighting system control panel 5 or may be provided separately from the fire fighting system control board 5.

Next, the operation of the present embodiment will be described.
When the first water level detection means detects a water level that is equal to or higher than the predetermined upper limit value, the control means is configured to operate the motor-operated valve (the connection valves 73 and 730, the exhaust cutoff valve 74, the intake valve 76, the switching valve 77, the drainage valve). The motorized valves (the coupling valves 73 and 730, the exhaust cutoff valve 74, the intake valve 76, the switching valve 77, and the drain valve 78) are automatically controlled so that the valve 78) is operated to drain the water from the second tanks 72 and 720. To do. The control means has completed drainage of the second tanks 72 and 720 after a preset first predetermined time has elapsed since the start of discharging the water stored in the second tanks 72 and 720. As described above, the motor-operated valves (the connection valves 73 and 730, the exhaust shut-off valve 74, the intake valve 76, the switching valve 77, and the drain valve 78) are automatically controlled so that the air / water separation and drainage devices 7 and 70 return to the non-drainage state. To do.

  That is, since the sprinkler fire extinguishing equipment according to the fourth embodiment is provided with the automatic control means, as in the third embodiment, when a predetermined amount of water accumulates in the second tanks 72 and 720, the first embodiment. Alternatively, drainage similar to that in Embodiment 2 is automatically performed, and when drainage is completed, control can be performed so as to automatically return to the non-drainage state in the same manner as in Embodiment 1 or Embodiment 2.

Embodiment 5. FIG.
In the sprinkler fire extinguishing equipment according to Embodiment 5, the valves (coupling valves 73 and 730, the exhaust cutoff valve 74, the switching valve 77), the intake valve 76, and the drainage constituting the drainage inflow path selection means and the drainage exhaust path selection means. The valve 78 is an electric valve, and the running water cutoff valve 31 is an electric valve.

  At this time, the pre-actuating valve 22 is closed, the running water shut-off valve 31 is opened, and the vacuum pump 24 is continuously operated to forcibly discharge the water filled in the secondary side pipe 12 as follows. be able to.

  Specifically, after filling the secondary side pipe 12 by inspection or the like, the pre-actuating valve 22 is closed, a forced drainage start operation is performed on the fire extinguishing system control panel 5, the running water shut-off valve 31 is opened, and the vacuum pump 24 is turned on. Control to operate continuously. Thereby, the water with which the secondary side piping 12 was filled flows in into the 2nd tanks 72 and 720 via the vacuum piping 14a. When the first water level detecting means detects a water level that is equal to or higher than the predetermined upper limit value, the control means is configured to operate the motor-operated valves (connection valves 73 and 730, exhaust cutoff valve 74, intake valve 76, switching valve 77, drain valve 78). ) To control the air / water separation / drainage devices 7 and 70 to be drained, and drainage is started from the second tanks 72 and 720. During this time, since the vacuum pump 24 is continuously operated, the water filled in the secondary side pipe 12 is stored in the first tanks 71 and 710.

  When drainage from the second tanks 72 and 720 is completed and the control means returns the air / water separation and drainage devices 7 and 70 to the non-drainage state, the water stored in the first tanks 71 and 710 is the first. In addition to flowing into the second tanks 72 and 720, the water filled in the secondary side pipe 12 also flows into the second tanks 72 and 720. When the first water level detecting means detects a water level that is equal to or higher than the predetermined upper limit value, the control means is configured to operate the motor-operated valves (connection valves 73 and 730, exhaust cutoff valve 74, intake valve 76, switching valve 77, drain valve 78). ) To return the air / water separation / drainage devices 7 and 70 to the drainage state, and start drainage from the second tanks 72 and 720.

  Thus, by performing continuous drainage operation with the air / water separation / drainage device 7, 70, the water filled in the secondary side pipe 12 is discharged, and eventually the water does not flow into the second tanks 72, 720. The control means determines that the water in the secondary side pipe 12 has been discharged when the second water level detection means does not detect the water level below the predetermined lower limit value for a preset second predetermined time or longer. Then, by outputting a command to that effect to the fire extinguishing system control panel 5, the fire extinguishing system control panel 5 stops the continuous operation of the vacuum pump 24.

  In addition, you may control the flowing water cutoff valve 31 and the vacuum pump 24 at the time of the said continuous drain operation by the said control means. Further, the running water shut-off valve 31 does not have to be an electric valve as long as it can be kept open manually during forced drainage.

  As described above, by configuring the sprinkler fire extinguishing equipment as in the fifth embodiment, after filling the secondary side pipe 12 by inspection or the like, the secondary side pipe 12 can be filled without flowing water into the vacuum pump 24. This water can be forcibly drained using the vacuum pump 24.

  1 Protective compartment, 2 sprinkler head, 3 fire detector, 4 fire receiver, 5 fire extinguishing system control panel, 6 fire extinguishing pump control panel, 7, 70 air / water separation and drainage system, 10 fire fighting water tank, 11 primary side piping, 12 2 Secondary piping, 13 Falling piping, 14a, 14b Vacuum piping, 16 Drainage piping, 21 Pressurized water supply device, 22 Pre-acting valve, 22a Switch for running water signal, 22b Remote start valve, 23 Flow control means, 24 Vacuum pump, 25 End test valve, 31 Flow water shutoff valve, 41, 53 Vacuum switch, 42 Orifice, 46 Head operation detection device, 47 Open valve, 51 Repeater, 52 Vacuum pump control panel, 71,710 First tank, 72,720 Second tank, 71a, 72a, 710a, 720a Inflow port, 71b, 72b, 710b, 720b Exhaust port, 7 c, 72c, 710c, 720c Drain port, 71e, 72e, 710e, 720e Tank body, 73a, 730a Connection pipe, 73, 730 Connection valve, 74 Exhaust shut-off valve, 74a Exhaust pipe, 75 Check valve, 75a Exhaust pipe, 76 intake valve, 76a intake pipe, 76b intake port, 77 switching valve (three-way valve), 77a inflow pipe (first tank inflow pipe), 77b inflow pipe (second tank inflow pipe), 78 drain valve, 79 Drain pipe, 79a outlet.

Claims (6)

A pressurized water supply device, a pre-acting valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and a secondary side of the pre-acting valve. A sprinkler comprising: a secondary side pipe to which the sprinkler head is connected; a vacuum pump that always provides a negative pressure in the secondary side pipe; and a vacuum pipe that connects the secondary side pipe and the vacuum pump. In fire extinguishing equipment,
The vacuum pipe is composed of a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump,
Between the first vacuum pipe and the second vacuum pipe, an air-water separation and drainage device is provided,
The air / water separation and drainage device is:
A first tank having a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain port at the lower end, and an inflow port in the internal space;
A second tank provided with a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain outlet at the lower end, and an inlet in the internal space, and provided below the first tank. When,
When not draining, the inlet of the second tank and the first tank communicate with the first vacuum pipe, and when draining, the inlet of the first tank and the first vacuum pipe are connected. A drainage inflow path selection means for communicating and blocking a flow path between the inlet of the second tank and the first vacuum pipe;
When not draining, the exhaust port of the second tank and the exhaust port of the first tank and the second vacuum pipe are communicated, and when draining, the exhaust port of the first tank and the second vacuum pipe are communicated. A drainage exhaust path selecting means for communicating with a pipe and blocking a flow path between the exhaust port of the second tank and the second vacuum pipe;
An intake valve having one end opened to the outside air and the other end connected to the exhaust port of the second tank, and is normally closed and opened when draining;
One end is connected to the drain port of the second tank, and the other end is provided in a drain pipe connected to the drain port opened below the drain port of the second tank. A drain valve,
With
The drainage exhaust passage selection means is provided in a first exhaust pipe connecting the second vacuum pipe and the exhaust port of the first tank, and the second vacuum pipe to the first tank. With a check valve that regulates the flow of air
When not draining, the water flowing from the first vacuum pipe is stored in the second tank, and the water is prevented from flowing into the second vacuum pipe,
When draining,
The flow path between the vacuum pipe and the second tank is shut off by the drainage inflow path selection means and the drainage exhaust path selection means, the intake valve is opened, and the inside of the second tank is atmospheric pressure. After opening the drain valve and discharging the water stored in the second tank,
Maintaining communication between the vacuum pipe and the first tank, storing water flowing from the first vacuum pipe in the first tank, and flowing the water into the second vacuum pipe. Sprinkler fire extinguishing equipment characterized by preventing. A pressurized water supply device, a pre-acting valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and a secondary side of the pre-acting valve. A sprinkler comprising: a secondary side pipe to which the sprinkler head is connected; a vacuum pump that always provides a negative pressure in the secondary side pipe; and a vacuum pipe that connects the secondary side pipe and the vacuum pump. In fire extinguishing equipment,
The vacuum pipe is composed of a first vacuum pipe connected to the secondary side pipe and a second vacuum pipe connected to the vacuum pump,
Between the first vacuum pipe and the second vacuum pipe, an air-water separation and drainage device is provided,
The air / water separation and drainage device is:
A first tank having a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain port at the lower end, and an inflow port in the internal space;
A second tank provided with a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain outlet at the lower end, and an inlet in the internal space, and provided below the first tank. When,
When not draining, the inlet of the second tank and the first tank communicate with the first vacuum pipe, and when draining, the inlet of the first tank and the first vacuum pipe are connected. A drainage inflow path selection means for communicating and blocking a flow path between the inlet of the second tank and the first vacuum pipe;
When not draining, the exhaust port of the second tank and the exhaust port of the first tank and the second vacuum pipe are communicated, and when draining, the exhaust port of the first tank and the second vacuum pipe are communicated. A drainage exhaust path selecting means for communicating with a pipe and blocking a flow path between the exhaust port of the second tank and the second vacuum pipe;
An intake valve having one end opened to the outside air and the other end connected to the exhaust port of the second tank, and is normally closed and opened when draining;
One end is connected to the drain port of the second tank, and the other end is provided in a drain pipe connected to the drain port opened below the drain port of the second tank. A drain valve,
With
The drainage inflow path selecting means includes a first inflow pipe connecting the first vacuum pipe and the inlet of the first tank, an inlet of the first vacuum pipe and the second tank. A switching valve for switching an inflow pipe connected to the first vacuum pipe and connected to the first vacuum pipe, the first inflow pipe, and the second inflow pipe A connecting pipe that connects the drain port of the first tank and the exhaust port of the second tank, and a connecting valve that is provided in the connecting pipe and is open when not draining and closed when draining. Consists of
The drainage exhaust path selecting means includes a first exhaust pipe connecting the second vacuum pipe and the exhaust port of the first tank, the second vacuum pipe and an exhaust port of the second tank. A second exhaust pipe that connects to the exhaust pipe, and an exhaust shut-off valve that is provided in the second exhaust pipe and is open when not drained and closed when drained,
When not draining, the water flowing from the first vacuum pipe is stored in the second tank, and the water is prevented from flowing into the second vacuum pipe,
When draining,
The flow path between the vacuum pipe and the second tank is shut off by the drainage inflow path selection means and the drainage exhaust path selection means, the intake valve is opened, and the inside of the second tank is atmospheric pressure. After opening the drain valve and discharging the water stored in the second tank,
Maintaining communication between the vacuum pipe and the first tank, storing water flowing from the first vacuum pipe in the first tank, and flowing the water into the second vacuum pipe. Sprinkler fire extinguishing equipment characterized by preventing. A pressurized water supply device, a pre-acting valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and a secondary side of the pre-acting valve. A sprinkler comprising: a secondary side pipe to which the sprinkler head is connected; a vacuum pump that always provides a negative pressure in the secondary side pipe; and a vacuum pipe that connects the secondary side pipe and the vacuum pump. In the fire extinguishing equipment, a gas is provided between the first vacuum pipe connected to the secondary side pipe and the second vacuum pipe connected to the vacuum pump so as to be interposed in the vacuum pipe. A water separation and drainage device,
It has a pressure-resistant outer shell, and has two tanks each provided with an exhaust port at the upper end, a drain port at the lower end, and an inlet in the internal space.
The two tanks are
At least one of the flow paths is controlled such that the inflow port maintains communication with the first vacuum pipe and the exhaust port maintains communication with the second vacuum pipe, respectively.
When not drained, they are controlled to communicate with each other,
During drainage, the tank to be drained is shut off from the other tank, the first vacuum pipe and the second vacuum pipe, and the exhaust port of the tank to be drained is opened to the outside air to increase the inside. Controlled to open the drain of the tank to be drained and discharge the water stored in the interior after the pressure is reached,
The water that flows in from the first vacuum pipe is stored so that the water does not enter the second vacuum pipe, and the stored water is discharged .
A non-return valve interposed between the exhaust port of the tank that is not drained at the time of draining and the second vacuum pipe, and regulating a flow of air from the second vacuum pipe toward the tank; An air-water separation and drainage device characterized by that. A pressurized water supply device, a pre-acting valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and a secondary side of the pre-acting valve. A sprinkler comprising: a secondary side pipe to which the sprinkler head is connected; a vacuum pump that always provides a negative pressure in the secondary side pipe; and a vacuum pipe that connects the secondary side pipe and the vacuum pump. In the fire extinguishing equipment, a gas is provided between the first vacuum pipe connected to the secondary side pipe and the second vacuum pipe connected to the vacuum pump so as to be interposed in the vacuum pipe. A water separation and drainage device,
A first tank having a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain port at the lower end, and an inflow port in the internal space;
A second tank provided with a pressure-resistant outer shell provided with an exhaust port at the upper end, a drain outlet at the lower end, and an inlet in the internal space, and provided below the first tank. When,
When not draining, the inlet of the second tank and the first tank communicate with the first vacuum pipe, and when draining, the inlet of the first tank and the first vacuum pipe are connected. A drainage inflow path selection means for communicating and blocking a flow path between the inlet of the second tank and the first vacuum pipe;
When not draining, the exhaust port of the second tank and the exhaust port of the first tank and the second vacuum pipe are communicated, and when draining, the exhaust port of the first tank and the second vacuum pipe are communicated. A drainage exhaust path selecting means for communicating with a pipe and blocking a flow path between the exhaust port of the second tank and the second vacuum pipe;
An intake valve having one end opened to the outside air and the other end connected to the exhaust port of the second tank, and is normally closed and opened when draining;
One end is connected to the drain port of the second tank, and the other end is provided in a drain pipe connected to the drain port opened below the drain port of the second tank. A drain valve,
With
The drainage inflow path selecting means includes a first inflow pipe connecting the first vacuum pipe and the inlet of the first tank, an inlet of the first vacuum pipe and the second tank. A switching valve for switching an inflow pipe connected to the first vacuum pipe and connected to the first vacuum pipe, the first inflow pipe, and the second inflow pipe A connecting pipe that connects the drain port of the first tank and the exhaust port of the second tank, and a connecting valve that is provided in the connecting pipe and is open when not draining and closed when draining. Consists of
The drainage exhaust path selecting means includes a first exhaust pipe connecting the second vacuum pipe and the exhaust port of the first tank, the second vacuum pipe and an exhaust port of the second tank. a second exhaust pipe which connects the door, provided in the exhaust pipe of the second, feel during undrained opened, at the time of drainage, characterized in that it is an exhaust shut-off valve in the closed state, in configuration Water separation drainage device . A pressurized water supply device, a pre-acting valve, a primary pipe provided on the primary side of the pre-acting valve and connected to the proximal end side, and a secondary side of the pre-acting valve. A sprinkler comprising: a secondary side pipe to which the sprinkler head is connected; a vacuum pump that always provides a negative pressure in the secondary side pipe; and a vacuum pipe that connects the secondary side pipe and the vacuum pump. In the fire extinguishing equipment, a gas is provided between the first vacuum pipe connected to the secondary side pipe and the second vacuum pipe connected to the vacuum pump so as to be interposed in the vacuum pipe. A water separation and drainage device,
It has a pressure-resistant outer shell, and has two tanks each provided with an outlet at the upper end, a drain at the lower end, and an inlet at a position below the exhaust in the internal space,
The two tanks are
At least one of the flow paths is controlled such that the inflow port maintains communication with the first vacuum pipe and the exhaust port maintains communication with the second vacuum pipe, respectively.
When not drained, they are controlled to communicate with each other,
During drainage, the tank to be drained is shut off from the other tank, the first vacuum pipe and the second vacuum pipe, and the exhaust port of the tank to be drained is opened to the outside air to increase the inside. Controlled to open the drain of the tank to be drained and discharge the water stored in the interior after the pressure is reached,
An air-water separation and drainage device for storing water flowing in from the first vacuum pipe to prevent water from entering the second vacuum pipe and discharging the stored water. The exhaust port of the tank that drains at the time of draining is not connected to the tank that is not drained at the time of draining, and is connected to the second vacuum pipe,
When returning from a drained state to a non-drained state, the drained tank communicates between the second vacuum pipe and the drained tank has a negative pressure of a predetermined value or less. The steam-water separation and drainage device according to claim 5, wherein the first vacuum pipe and the drained tank communicate with each other.

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