JP3158943U - Water flow test equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water flow test apparatus capable of improving workability in a water flow test. SOLUTION: Water discharged from a foam fire extinguishing agent discharge port of a fire extinguisher 3 is introduced into a housing 12, and this water is discharged from a discharge port to the outside of a storage tank through a discharge hose 16. Therefore, during the water flow test, the water discharged from the foam fire extinguishing agent discharge port of the fire extinguishing device 3 can be discharged to the outside of the storage tank without removing the supply pipe 10 connected to the fire extinguishing device 3. Therefore, the installation time and the collection (cleanup) time can be shortened as compared with the conventional water flow test apparatus. Therefore, workability in the water flow test can be improved. [Selection diagram] Fig. 4

Description

  The present invention relates to a water flow test device for a fire extinguishing device provided in a storage tank for storing crude oil or the like.

  A tank that stores flammable liquid fuel such as crude oil has a floating roof type in which a roof is floated on the oil surface in order to prevent the crude oil in the tank from vaporizing and igniting. In such a storage tank, when crude oil or the like leaks from a gap between the floating roof and the inner wall of the tank, a so-called ring fire that ignites from the periphery of the floating roof may occur. Therefore, the tank is provided with a plurality of fire extinguishing devices along the outer periphery of the floating roof in preparation for such a fire. This fire extinguisher is connected to a supply pipe for supplying a foam extinguisher, and discharges the foam extinguisher supplied from the supply pipe into the tank when a fire occurs (see, for example, Patent Document 1).

  By the way, in said fire extinguishing apparatus, in order to confirm the soundness of a function, it is necessary to perform a water flow test regularly. The water flow test is a test in which water is passed through a supply pipe in order to confirm whether or not the foam fire extinguisher is normally supplied from a water supply pipe that supplies the fire extinguisher to the fire extinguisher. In this water flow test, the water discharged from the supply pipe may be turbid due to rust or the like, so it is necessary to prevent the water that has passed through the supply pipe from flowing into the tank. Therefore, in the conventional water flow testing device, the water supply pipe connected to the fire extinguishing device is once removed, the drainage pipe connected to the drainage hose is connected to this water supply pipe, and the drainage hose is directed to the outside of the tank. The water is prevented from flowing in.

JP 2006-149697 A

  However, in the conventional water flow test apparatus, the operation | work which removes a water supply pipe and attaches a drain pipe is needed, and the work which connects a supply pipe to a fire extinguishing apparatus again after completion | finish of a water flow test is needed. Therefore, the conventional water flow test apparatus has a problem that it takes time and effort.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a water flow test device capable of improving workability in a water flow test.

  In order to solve the above-described problem, a water flow test apparatus according to the present invention is a water flow test apparatus used during a water flow test of a fire extinguishing apparatus provided in a tank that stores a flammable liquid. A tank that is attached to cover the foam extinguishing agent discharge port and that is connected to the housing to which the liquid discharged from the foam extinguishing agent discharge port is introduced, and a discharge port for discharging the liquid introduced into the housing to the outside of the housing. And a discharge hose extending outside.

  In this water flow test device, the liquid discharged from the foam extinguishing agent discharge port of the fire extinguishing device is introduced into the housing, and this liquid is discharged from the discharge port to the outside of the tank through the discharge hose. Therefore, the water discharged from the foam extinguishing agent discharge port of the fire extinguishing device can be discharged to the outside of the tank without removing the supply pipe connected to the fire extinguishing device during the water flow test. Therefore, compared with the conventional water flow test device, the installation time and the collection time can be shortened. Therefore, the workability in the water flow test can be improved.

  Moreover, it is preferable that the drain port is provided with two or more by the housing. With such a configuration, the liquid discharged from the foam extinguishing agent discharge port of the fire extinguisher can be reliably discharged from the discharge port. As a result, the liquid discharged from the foam extinguishing agent discharge port of the fire extinguisher can be prevented from flowing into the tank.

  Moreover, it is preferable that the buffer material is provided in the part which contact | abuts a fire extinguishing apparatus in a housing along the opening in the outer side of the opening which faces a foam extinguishing agent discharge | release opening. Thereby, since the adhesiveness of a housing and a foam extinguishing agent discharge port can be ensured, it can prevent that a liquid leaks from between an opening and a foam extinguishing agent discharge port.

  According to the present invention, workability can be improved in a water flow test of a fire extinguisher provided in a storage tank.

It is a figure which shows the external appearance of the storage tank in which the air foam chamber in which the water flow test apparatus based on this invention is used was installed. It is a front view which shows the air foam chamber installed in the storage tank shown in FIG. It is a front view which shows the state by which the water flow test apparatus was attached to the air foam chamber. It is the figure which looked at FIG. 3 from the side. It is a front view of a housing. It is a rear view of a housing. It is a side view of a housing. It is a perspective view which shows the structure of a discharge hose. It is a figure which shows the conventional water flow test apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a view showing an appearance of a storage tank in which an air foam chamber (fire extinguishing device) in which a water flow test device according to the present invention is used is installed, and FIG. 2 is installed in the storage tank shown in FIG. It is a front view which shows a fire extinguishing apparatus. As shown in FIG. 1, the storage tank 1 is a tank for storing flammable liquid fuel such as crude oil, gasoline, and naphtha, and a floating roof 2 that floats on the stored liquid fuel is provided inside. It is a roof type tank. The storage tank 1 is open at the top, and a plurality (14 in this case) of air foam chambers 3 are installed at a predetermined interval along the outer periphery.

  The air foam chamber 3 is a device that releases a foam extinguisher into the storage tank 1 when a fire occurs. As shown in FIG. 2, the air foam chamber 3 has a main body portion 4, a deflector 5, and a foam extinguishing agent discharge port 6. The main body portion 4 is composed of a pair of side surface portions 7 a and 7 b and a back surface portion 8. The main body portion 4 is fixed to the storage tank 1 by a support portion 9 (see FIG. 4) joined to the back surface portion 8. The deflector 5 is provided in the upper part of the back surface part 8, and is connected with the supply pipe | tube 10 (refer FIG. 4) connected with the back surface part 8. As shown in FIG. The deflector 5 changes the direction of the foam extinguisher discharged from the supply pipe 10 to the foam extinguishing agent discharge port 6 side. In addition, the supply pipe | tube 10 is connected to the tank (not shown) which stores a foam extinguishing agent via the pump (not shown).

  The foam extinguishing agent discharge port 6 is a part that discharges the foam extinguishing agent into the storage tank 1, and is connected to the deflector 5. The foam extinguishing agent discharge port 6 is provided along the width direction of the back surface 8 at the lower part of the main body 4, and the lower end of the foam extinguishing agent discharge port 6 is substantially flush with the inner wall 1 a of the storage tank 1. It is provided to become. In the air foam chamber 3 having such a configuration, the rated discharge amount of the foam extinguishing agent is 200 l / min.

  Here, in the air foam chamber 3 described above, it is necessary to perform a water flow test periodically (for example, once a year) in order to confirm the soundness of the function. In the water flow test, for example, water (liquid) is supplied from the base end side (lower part of the storage tank 1) of the supply pipe 10 to the foam extinguishing agent, and water is normally supplied at the installation position of the air foam chamber 3. That is, it is a test for confirming whether or not the supply pipe 10 is clogged. In this water flow test, a water flow test device is used. The water flow test device will be described in detail with reference to FIGS.

  FIG. 3 is a view showing a state in which a water flow test device is attached to the air foam chamber, and FIG. 4 is a view of FIG. 3 viewed from the side. 5 is a front view of the housing, FIG. 6 is a rear view of the housing, and FIG. 7 is a side view of the housing. FIG. 8 is a perspective view showing the configuration of the discharge hose. As shown in each figure, the water flow test device 11 includes a housing 12 and discharge hoses 15 and 16.

  The casing 12 is a portion into which water discharged from the foam extinguishing agent discharge port 6 of the air foam chamber 3 is introduced, and is formed in a box shape from a light material such as wood or resin. The housing 12 has dimensions corresponding to the foam extinguishing agent discharge port 6 of the air foam chamber 3. For example, the length L is 808 mm, the height H is 270 mm, and the width W is 113 mm. An opening 17 is formed in the housing 12. The opening 17 has a rectangular shape and is provided over the entire back side of the housing 12. Further, the housing 12 is provided with a cushioning material 18 on the end face on the opening 17 side so as to surround the outside of the opening 17. The buffer material 18 is formed of a water-resistant material such as urethane foam or foamed polyethylene.

  Further, on the side portions 12 a and 12 b in the longitudinal direction of the housing 12, discharge ports 13 and 14 for discharging the water introduced into the housing 12 to the outside of the housing 12 are provided. The discharge ports 13 and 14 are formed in a circular shape in the lower part of the side portions 12a and 12b and have a diameter of about 50 mm. Adapters 19 and 20 are inserted into the discharge ports 13 and 14. Couplers 21 and 22 connected to the discharge hoses 15 and 16 are fitted to the adapters 19 and 20. Thereby, the housing 12 and the discharge hoses 15 and 16 are connected.

  The side portions 12a and 12b are provided with plate-like locking members 23 and 24 at the positions where the discharge ports 13 and 14 are formed. The locking members 23 and 24 protrude from the end surface on which the cushioning material 18 is provided. When the casing 12 is attached to the air foam chamber 3, the locking members 23 and 24 abut against the edge of the storage tank 1 to lock the casing 12 (see FIG. 4). Thereby, the housing 12 can be positioned and the housing 12 is prevented from falling. Furthermore, the housing 12 is provided with a plurality (here, six) of belt passing portions 28 for passing through fixing belts 29 and 30 described later.

  The discharge hoses 15 and 16 are made of, for example, vinyl chloride, and couplers 21 and 22 are connected to one end side. The discharge hoses 15 and 16 extend to the outside of the storage tank 1 as shown in FIG. The discharge hoses 15 and 16 connected to the housing 12 are coupled to one hose 25 on the rear side of the air foam chamber 3 (outside the storage tank 1). The hose 25 is made of a lightweight material such as an agricultural polyethylene hose. The hose 25 extends to the lower part of the storage tank 1, and the length thereof is, for example, about 25 m corresponding to the height of the storage tank 1. A rope (not shown) is passed through the hose 25, and this rope is secured to, for example, an angle provided near the ground. This prevents the hose 25 from shaking due to wind or the like.

  When such a water flow test device 11 is attached to the air foam chamber 3, the housing 12 is first arranged so that the opening 17 of the housing 12 and the foam extinguishing agent discharge port 6 of the air foam chamber 3 face each other. Next, the hook 27 of the fixed rope 26 connected to the housing 12 is hooked on the upper portion of the air foam chamber 3, and the fixing belts 29 and 30 through the belt passing portion 28 provided in the housing 12 are hung on the supply pipe 10. Pass and fix. The fixing belts 29 and 30 are provided with ratchet fittings 31 and 32, and the fixing belts 29 and 30 are fastened by the ratchet fittings 31 and 32. Thereby, the housing 12 is firmly fixed to the air foam chamber 3. Then, the couplers 21 and 22 to which the discharge hoses 15 and 16 are connected are respectively attached to the adapters 19 and 20 provided in the discharge ports 13 and 14, and the two discharge hoses 15 and 16 are combined into one by the hose 25. To summarize.

  Then, the water flow test using the water flow test apparatus 11 attached as mentioned above is demonstrated. In the water flow test, water is supplied from the base end side of the supply pipe 10 at a pressure of 1.2 Mpa. Specifically, for example, a pump connected to a water storage tank is connected to the proximal end portion of the supply pipe 10, and water is supplied for 15 to 20 minutes. The water thus sent is discharged from the foam extinguishing agent discharge port 6 of the air foam chamber 3 through the supply pipe 10. The water discharged from the foam extinguishing agent discharge port 6 is introduced into the housing 12 of the water flow test device 11 and discharged from the discharge ports 13 and 14 to the outside of the storage tank 1 through the discharge hoses 15 and 16 and the hose 25. Is done. The water flow test device 11 has a discharge capacity of 390 l / min. As described above, a water flow test is performed.

  FIG. 9 is a view showing a conventional water flow test device. As shown in the figure, a conventional water flow test apparatus 40 includes a drain pipe 41 connected to the supply pipe 10, a discharge hose 42 connected to the drain pipe 41, and a support jig that supports the drain pipe 41. 43. When the conventional water flow test device 40 is attached, the supply pipe 10 connected to the air foam chamber 3 is removed, the opening of the supply pipe 10 is directed to the outside of the storage tank 1, and a support jig is attached to the supply pipe 10. The drain pipe 41 supported by 43 is connected. Then, the discharge hose 42 and the supply pipe 10 are fixed with the rope R.

  When attaching such a conventional water flow test device 40, the storage tank 1 contains flammable crude oil or the like, and thus an electric tool cannot be used. Therefore, it is necessary for an operator to manually remove a plurality of (for example, 16) flange bolts (not shown) that connect the supply pipe 10 and the air foam chamber 3. However, it is difficult to remove the flange bolt because paint or moss is caught in the flange bolt and is fixed by rust or the like. Therefore, there is a problem that it takes a considerable time to remove the supply pipe 10 and connect it to the drain pipe 41. Further, in order to cope with the pressure of water discharged from the supply pipe 10, the drain pipe 41 is made of a material such as iron. Therefore, the total weight of all the parts including the drain pipe 41 is, for example, 110 kg or more. Therefore, in order to carry all the parts to the top of the storage tank 1, many workers are required and a burden is imposed on the workers.

  In contrast, in the water flow test device 11, water discharged from the foam extinguishing agent discharge port 6 of the air foam chamber 3 is introduced into the housing 12, and the water is discharged from the discharge ports 13 and 14 to the discharge hoses 15 and 16. It is configured to discharge to the outside of the storage tank 1. Therefore, the water discharged from the foam extinguishing agent discharge port 6 of the fire extinguishing device 3 can be discharged to the outside of the storage tank 1 without removing the supply pipe 10 connected to the fire extinguishing device 3 during the water flow test. . Therefore, compared with the conventional water flow test device 40, the installation time and the recovery (tidy-up) time can be greatly shortened. Therefore, the workability in the water flow test can be improved.

  Moreover, since the housing 12 is formed of a lightweight material such as wood, it has excellent transportability. Therefore, it is possible to reduce the number of workers and the burden when carrying the housing 12 and the discharge hoses 15 and 16 to the top of the storage tank 1.

  Moreover, since the two discharge ports 13 and 14 are provided in the lower part of the housing 12, the water discharge | released from the foam extinguishing agent discharge port 6 of the fire extinguishing apparatus 3 can be discharged | emitted reliably from the discharge ports 13 and 14. . As a result, it is possible to prevent water from overflowing from the housing 12 and to prevent the water discharged from the foam extinguishing agent discharge port 6 of the fire extinguishing apparatus 3 from flowing into the storage tank 1.

  Further, a cushioning material 18 is provided along the opening 17 outside the opening 17 facing the foam extinguishing agent discharge port 6 at a portion of the housing 12 that contacts the fire extinguishing device 3. Thereby, since the adhesiveness of the housing 12 and the foam extinguishing agent discharge port 6 can be ensured, it is possible to prevent water from leaking between the opening 17 and the foam extinguishing agent discharge port 6.

  The present invention is not limited to the above embodiment. For example, in the above embodiment, the discharge ports 13 and 14 are provided below the side portions 12a and 12b of the housing 12, but the discharge ports 13 and 14 may be provided anywhere on the housing 12. However, if the discharge ports 13 and 14 are provided in the upper part of the housing 12, the water remaining in the housing 12 may flow into the storage tank 1 when the housing 12 is removed after the water flow test. Therefore, the discharge ports 13 and 14 are preferably provided on the lower side of the housing 12.

  Moreover, in the said embodiment, although the discharge ports 13 and 14 are provided in two places, one discharge port or two or more discharge ports may be provided. In short, it is sufficient that the water received by the housing 12 can be discharged. For example, when the number of outlets is one, the diameter of the outlet may be increased.

  Moreover, in the said embodiment, although the shape except the opening 17 is not open | released in the housing | casing 12, when the housing 12 is attached to the air foam chamber 3, it becomes the shape which plugs up the foam extinguishing agent discharge port 6 completely. The housing 12 may have other shapes. For example, the housing 12 may have a shape with an open upper surface portion. Further, the casing 12 may be formed of, for example, aluminum, a resin containing carbon fiber, or the like instead of wood.

  DESCRIPTION OF SYMBOLS 1 ... Tank, 3 ... Air foam chamber (fire extinguishing apparatus), 6 ... Foam extinguishing agent discharge port, 11 ... Water flow test apparatus of this invention, 12 ... Housing, 13, 14 ... Discharge port, 15, 16 ... Discharge hose, 17 ... Opening, 18 ... Buffer material, 40 ... Conventional water flow test device.

Claims (3)

A water flow test device used during a water flow test of a fire extinguishing device provided in a tank for storing a flammable liquid,
A casing which is attached so as to cover the foam extinguishing agent discharge port of the fire extinguishing device and into which the liquid discharged from the foam extinguishing agent discharge port is introduced,
A water flow test device, comprising: a discharge hose connected to a discharge port for discharging the liquid introduced into the housing to the outside of the housing and extending to the outside of the tank.   The water flow test device according to claim 1, wherein a plurality of the discharge ports are provided in the housing. 3. The passage according to claim 1, wherein a buffer material is provided along an opening outside the opening facing the foam extinguishing agent discharge port at a portion of the casing that contacts the fire extinguishing device. Water test equipment.

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