JP2012125347A - Nozzle connecting adapter and spray measurement device of water spray apparatus in tunnel using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle connecting adapter capable of preventing water leakage by simply and stably connecting an intake hose to a water spray nozzle; and to provide a spray measurement device of a water spray apparatus in a tunnel, capable of further accurately measuring the spray using the same.SOLUTION: The spray measurement device of the water spray apparatus in a tunnel includes a flow rate finder for measuring the flow rate of the spray water, and the intake hose. The nozzle connecting adapter (21) to be attached to one end of the intake hose includes: an adapter body (22) having a connecting port (220) to be connected to the water spray nozzle (32); and a connecting fixture (23) attached to the side of the connecting port (220) of the adapter body (22). The connecting fixture (23) can be fixed to the water spray nozzle (32) to be connected to the connecting port (220), and the connecting fixture (23) is formed with nozzle engaging portions (234 and 234a) that are adapted to be engaged with an engaging element (a step part) (322) of the water spray nozzle (32) when the connecting fixture (23) is fixed to the water spray nozzle (32).

Description

  The present invention relates to a nozzle connection adapter and a spray amount measuring device for a water spray device in a tunnel using the nozzle connection adapter. More specifically, the nozzle for connecting the water hose to the water spray nozzle can be easily and stably connected, and the nozzle connection adapter that can prevent water leakage and the spray amount can be measured more accurately. The present invention relates to a spray amount measuring device for a water spray device in a tunnel.

  For example, in a tunnel with a large length and a large traffic volume, such as a highway tunnel, a water spray device as a fire extinguishing equipment is installed in preparation for the occurrence of a vehicle fire due to a traffic accident or the like. This water spray device includes a large number of water spray nozzles provided at a predetermined interval in the length direction of the tunnel. When the water spraying device detects smoke or high heat from a fire, the automatic valve of the compartment opens and water is sprayed from each water spray nozzle all at once, and the fire can be calmed down.

  This water spray device usually needs to be checked regularly every year to see if it functions properly. In the past, traffic was blocked to prevent danger, and water was actually sprayed from each water spray nozzle into the tunnel, but in recent years, inspections such as measuring the amount of spray have been conducted inside the tunnel. Various inspection devices have been proposed that can be made without actually spraying water and do not need to block traffic during inspection (see Patent Document 1 and Patent Document 2).

  The water spray inspection device described in Patent Document 1 collects water sprayed from a water spray nozzle with a water collection container, distributes it to a gas-liquid separator and a flow meter, and then passes through a water conduit and a drain nozzle. The flow meter is composed of a float-type flow meter, and the flow meter is provided with a water outlet portion extending upward and having an opening for pressure release at the upper end portion. The outlet part is provided with a discharge part that branches downward in the middle part, and the water that has passed through the main body in the flowmeter is discharged from the outlet part through the discharge part, and the amount of water discharged from the water spray nozzle is reduced in a compact configuration. It can be measured appropriately.

  The water spray amount measuring device described in Patent Document 2 includes a spray cover, a water conduit, and a water flow switch, and the water flow switch has a water inlet formed at the top of a cylindrical casing and two water discharge ports formed at the bottom. In the casing, a funnel-shaped valve member composed of two disc members parallel to the end face of the casing and two flat plates located between the disc members is provided to be rotatable around the axis of the casing. By switching the valve member, the flow path is switched between a state where the water inlet and one water outlet communicate with each other and a state where the water inlet and the other water outlet communicate with each other. The amount of water spray can be measured accurately without wasteful water spray, and the configuration is simple and can be easily transported and moved.

JP2004-20490

JP2007-319548

Each of the above-mentioned conventional devices is sufficiently useful in that inspection such as measurement of the amount of water spray can be performed without actually spraying water into the tunnel, and traffic need not be blocked during inspection. However, there were the following problems.
That is, in any apparatus, a bag-like container attached so as to surround the nozzle is employed in the water intake portion connected to the water spray nozzle. Since such a bag-like water intake section is unstablely attached to the water spray nozzle, it is difficult to connect in a watertight state, and water leakage may occur from the water intake section, and the spray amount may not be measured accurately. was there.

  Moreover, in order to prevent the intake section from coming off the nozzle due to the weight of the intake section itself, the weight of the hose or the water pressure, etc., the load is reduced by hanging the hose or intake section with a wire or the like. It was. For this reason, in the inspection work, it takes time and effort to attach or remove the hanging wire etc. to the top of the tunnel or the like at each location where the water spray nozzle is provided while moving in the tunnel with a work vehicle. Work has to be done, and this work has become a bottleneck in making the inspection work more efficient.

  An object of the present invention is to provide a nozzle connection adapter capable of easily and stably connecting a water intake hose to a water spray nozzle to prevent water leakage in a spray amount measuring device of a water spray device in a tunnel, and It is an object to provide a spray amount measuring device for a water spray device in a tunnel which can measure the spray amount more accurately by using it.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
A nozzle connection adapter used in a spray amount measuring device for a water spray device in a tunnel,
An adapter body attached to a hose connected to a flow meter and having a connection port connected to a water spray nozzle of a water spray device in a tunnel;
A connection fixture attached to the connection port side of the adapter body;
With
The connection fixture can be fixed to a water spray nozzle connected to the connection port,
The connection fixture is formed with a nozzle engagement element that engages with the engagement element of the water spray nozzle when the connection fixture is fixed to the water spray nozzle.
It is a nozzle connection adapter.

(2) The present invention
A nozzle connection adapter used in a spray amount measuring device for a water spray device in a tunnel,
An adapter body attached to a hose connected to a flow meter and having a connection port connected to a water spray nozzle of a water spray device in a tunnel;
A connection fixture attached to the connection port side of the adapter body;
With
The adapter body has an engagement element;
The connection fixture includes a required number of movable components that can be freely opened and closed, and a coupling unit that couples the movable components in a closed state.
The movable structure includes a main body engagement element that engages with an engagement element of the adapter main body and a nozzle that engages with an engagement element of a nozzle connected to the connection port when the movable structure is closed. An engagement element is formed,
It is a nozzle connection adapter.

(3) The present invention
A flow rate measuring device for measuring the flow rate of spray water sprayed from the water spray nozzle of the water spray device in the tunnel;
A water intake hose having the nozzle connection adapter of (1) or (2) attached to one end side and having a connector connected to the flow rate measuring device on the other end side;
With
This is a spray amount measuring device for a water spray device in a tunnel.

(4) The present invention
The flow rate measuring device includes a required number of water supply pipes to which a water intake hose is connected, a defoaming means for eliminating bubbles contained in the spray water supplied from the water supply pipe, and a flow rate measurement means for measuring the flow rate of the supplied spray water. With
It is a spray amount measuring apparatus of the water spray apparatus in a tunnel of said (3).

(Function)
The operation of the nozzle connection adapter according to the present invention and the spray amount measuring device of the water spray device in the tunnel using the same will be described. Here, the constituent elements used in the description are assigned in correspondence with the reference numerals given to the respective parts in the embodiments described later. These reference numerals are the same as the reference numerals described in the claims of the claims. Similarly, it is only for the purpose of facilitating understanding of the contents, and the meaning of each component is not limited to the above-described parts.

  Intake hose (2) between the water spray nozzle (32) and the flow rate measuring device (1) of the water spray section provided at regular intervals in the water supply pipe of the water spray device (3) in the tunnel installed in the tunnel ). In the connection of the nozzle connection adapter (21), the connection port (220) of the adapter body (22) is fitted into the water spray nozzle (32), and the movable component (233, 233a) of the connection fixture (23) is closed.

  Thereby, the main body engaging element (235a) of the movable component (233, 233a) is engaged with the engaging element (223) of the adapter main body (22), and the nozzle engaging element (234a) is the water spray nozzle (32). Engaging with the engaging element (322). In this way, according to the nozzle connection adapter (21), the water spray nozzle (32) and the nozzle connection adapter (21) of the water intake hose (2) can be mechanically connected in a watertight state, thus simplifying the connection work. And the connection is stable without loosening.

  Water is supplied to each water spray nozzle (32) to be inspected, to which the water intake hose (2) is connected, and water is sprayed from each water spray nozzle (32). The sprayed water passes through each intake hose (2) and is supplied into the water tank (10) of the flow rate measuring device (1). Water is continuously discharged from the weir (106) to the outside, so that the water level is kept substantially constant. Then, the water level is measured by the flow rate measuring means (13), the measured value of the water level is converted into the flow rate, and the flow rate of the spray water is measured.

  In the spray amount measuring device of the water spray device in a tunnel according to the present invention, when a water intake hose is connected to the water spray nozzle, the connection work by the connection fixture can be mechanically performed with a relatively simple work. . Therefore, it is possible to easily and stably connect the water intake hose to the water spray nozzle and to prevent water leakage and to measure the amount of spray using the nozzle connection adapter. It is possible to provide a spray amount measuring device for a water spray device in a tunnel which can be accurately performed.

The perspective view of the state which showed one Embodiment of the nozzle connection adapter which concerns on this invention, and closed the connection fixture. The perspective view of the state which opened the connection fixture of the nozzle connection adapter shown in FIG. Cross-sectional explanatory drawing which shows the state which connected the nozzle connection adapter to the water spray nozzle of the water spray apparatus in a tunnel. Explanatory drawing which shows the structure of the spraying amount measuring apparatus which concerns on this invention, and shows the use condition. The perspective view which shows the structure of the flow measuring device which comprises a spraying quantity measuring apparatus. The perspective view which shows the other Example of the flow measuring device which comprises a spraying quantity measuring apparatus.

The present invention will be described in detail based on the embodiments shown in the drawings.
First, with reference to FIG. 1 thru | or FIG. 3, the structure of the nozzle connection adapter 21 used for the water intake hose 2 which comprises the spray amount measuring apparatus A mentioned later is demonstrated.

  The nozzle connection adapter 21 includes an adapter main body 22 having a connection port 220 connected to the water spray nozzle 32 of the in-tunnel water spray device 3, and a connection fixture 23 provided on the connection port 220 side of the adapter main body 22. ing. The nozzle connection adapter 21 constitutes a water intake hose 2 connected to a flow rate measuring device 1 to be described later, and is attached to one end side of the hose 20.

  The adapter main body 22 has a substantially circular tubular body 221. The inner diameter portion of the tube body 221 has a small diameter portion 221a and a large diameter portion 221b. An insertion portion 225 is formed on the connection port 220 side of the small diameter portion 221a so as to have a large diameter on the entire circumference. A rubber packing 226 is fitted into the fitting portion 225. The packing 226 is a space having an outer diameter portion having a circular cross section and an inner diameter portion having a hexagonal cross section. The diagonal length of the inner diameter portion of the packing 226 is set to be slightly shorter than the diameter of the small diameter portion 221a so that the fitting portion 321 having a hexagonal cross section of the water spray nozzle 32 can be fitted without a gap. (See FIG. 2).

  A flange tool 222 is fixed to the outside of the tube body 221. The outer peripheral portion of the tube body 221 on the side of the connection port 220 is formed to be slightly smaller in diameter, and on both sides opposed to the diameter ship direction, an engagement recess 223 (an engagement element on the far side in FIGS. 1 and 2) is provided. The concavity 223 is not visible). Each engagement recess 223 is formed by cutting to a required depth so that straight lines on the back side are parallel to each other. Engagement recesses 224 (see FIG. 3) similar to the engagement recesses 223 are formed between the engagement recesses 223 on the outer peripheral portion of the tube body 221 on the side facing the fixing base 230 described later. The linear surfaces on the back side of the respective engagement recesses 223 and the engagement recesses 224 are set to be perpendicular to each other.

  A connection fixture 23 is attached to the connection port 220 side of the tube body 221. The connection fixture 23 has a fixing base 230 fixed by a fixing screw 231 on the opposite side of the outer periphery of the tubular body 221 to the engagement recess 224. In order to prevent the fixing base 230 from turning around the attachment portion by the fixing screw 231, a stepped portion (reference numeral omitted) is formed with a small diameter portion on the connection port 220 side of the tube body 221 on the lower surface side in FIGS. It is made to contact.

  Movable components 233 and 233a are attached to both sides of the fixed base 230 so as to be able to open and close via the shaft body 232. The movable components 233 and 233a have a main body engagement plate 235 and a nozzle engagement plate 234, respectively. The main body engaging plate 235 constitutes a main body engaging element, and the nozzle engaging plate 234 constitutes a nozzle engaging element. The main body engaging plate 235 and the nozzle engaging plate 234 of the movable structural bodies 233 and 233a are fixed in parallel via a plurality of spacers 236, and are pivotally attached to the shaft body 232 so that the base end side sandwiches the fixing base 230.

  On the closing direction side of each nozzle engaging plate 234, when the movable structural bodies 233 and 233a are closed, a step portion 322 that is an engaging element on the opposite side to the spray port 320 of the fitting portion 321 of the water spray nozzle 32, and A nozzle engaging portion 234a having an almost semicircular edge is formed. Each main body engagement plate 235 is formed so as to protrude slightly outward from each nozzle engagement plate 234, and on the closing direction side, each engagement of the tube body 221 is performed when the movable components 233 and 233a are closed. A main body engaging portion 235a having a linear edge that engages with the concave portion 223 is formed. A main body engaging portion 235b that engages with the engaging recess 224 is formed on the terminal end side of the main body engaging portion 235a.

  A front end receiving member 237 formed by appropriately bending the plate is fixed to the front end of the main body engaging plate 235 and the nozzle engaging plate 234 on the movable component 233 side. A tightening screw 238 is rotatably attached to the distal end portion of the distal end receiving tool 237 so as to pass therethrough. A screw portion 238 a is formed at the tip of the tightening screw 238. The tip receiver 237 and the tightening screw 238 constitute a connecting means together with a tip receiver 239 and a screw hole 239a described later.

  In addition, a tip receiving member 239 formed by appropriately bending a plate body is fixed to the distal end portions of the main body engaging plate 235 and the nozzle engaging plate 234 on the movable component 233a side, similarly to the tip receiving member 237. Yes. A screw hole 239a for screwing the screw portion 238a of the tightening screw 238 is formed through the tip portion of the tip receiver 239.

  The movable component bodies 233 and 233a of the connection fixture 23 are rotated in the closing direction, and the screw portion 238a of the tightening screw 238 on the movable component 233 side is screwed into the screw hole of the tip receiving member 239 on the movable component 233a side. It can be set in the closed state by screwing and tightening to 239a. In a state where the movable structural bodies 233 and 233a are closed, the main body engaging portion 235a of the main body engaging plate 235 is engaged with the engaging concave portion 223 of the tube body 221 and the main body engaging portion 235b is engaged with the engaging concave portion of the tube body 221. 224 is engaged.

  Further, in a state where the connection port 220 of the adapter main body 22 is fitted in the water spray nozzle 32, the nozzle engaging portion 234 a of the nozzle engaging plate 234 is closed by the water spray nozzle 32 by closing the movable components 233 and 233 a. The step 322 of the fitting portion 321 is engaged. Thereby, the water spray nozzle 32 and the nozzle connection adapter 21 at the tip of the hose 20 of the water intake hose 2 can be mechanically connected in a watertight state.

  In addition, as a connection means for connecting the movable structural bodies 233 and 233a, in addition to the screw type of this embodiment, for example, a catch clip can be used as long as it can be connected and disconnected by a relatively simple operation. Various fixing devices such as a clip or a clamp referred to may be employed.

The configuration of the spray amount measuring apparatus A will be described mainly with reference to FIGS. 4 and 5.
The spray amount measuring device A includes a flow rate measuring device 1, a water intake hose 2 that connects the water spray nozzle 32 of the in-tunnel water spray device 3 and the water supply pipes 12, 12 a, 12 b of the flow rate measuring device 1.
The water intake hose 2 has the nozzle connection adapter 21 attached to the one end of the hose 20 via a plug-in connector 25 that can be easily connected, and each water supply pipe 12 of the flow meter 1 described later at the other end of the hose 20. , 12a, 12b is connected to the connector 121. The connector 24 is attached. In the present embodiment, a transparent hose is adopted as the hose 20 so that the flow of spray water can be confirmed.

  The flow rate measuring device 1 is a weir type flow rate measuring device in the present embodiment, and measures the flow rate based on the measured value of the level of water flowing in the water tank in the direction of the weir (drainage side). The dimensions of each part of the flow meter 1 are in accordance with the dimensions of the right triangular weir described in “JIS B8302 Pump Discharge Measurement Method”. Note that the flow rate measuring device 1 is not limited to this method, and other types of flow rate measuring devices such as a venturi type, a differential pressure type (orifice type), an impeller type, a Coriolis type, etc. may be employed.

  The flow rate measuring device 1 has a water tank 10 having a rectangular shape in plan view and an open top. The water tank 10 includes a bottom plate 101, side plates 102 and 103, a front plate 104, and a rear side weir plate 105. The dam plate 105 has a dam portion 106 that is a right-angled triangular dam. Edge plates 102 a, 103 a, 104 a, 105 a parallel to the bottom plate 101 are slightly on the outside between the upper edges of the side plates 102, 103, the front plate 104 and the rear ends of the side plates 102, 103 that are above the weir plate 105. It is overhanging and fixed. A drain pipe 15 is provided near the front plate 104 of the bottom plate 101. Reference numeral 150 denotes a plug. Further, support legs 16 capable of level adjustment are provided at the four corners on the lower surface side of the bottom plate 101.

  A support member 11 is fixed to the upper portions of the side plates 102 and 103 near the front plate 104 of the water tank 10 so as to span between the edge plates 102a and 103a. The support member 11 is an elongated plate formed in a rectangular frame shape, and is fixed in parallel with the bottom plate 101. Three water supply pipes 12, 12 a, 12 b are fixed to the support member 11 by a U-shaped fastening fixture 120. The water supply pipes 12, 12a and 12b are fixed to the front plate 104 side of the support member 11 so as to be perpendicular to the bottom plate 101, and their lower ends are slightly lifted from the bottom plate 101 (see FIG. 4). Moreover, the connection tool 121 is provided in the upper end part of the water supply pipes 12, 12a, 12b.

  In the water tank 10, four flow straightening plates 14, 14a, 14b, and 14c are attached to an intermediate portion in the length direction of the water tank 10 slightly behind the water supply pipes 12, 12a, and 12b. Each of the rectifying plates 14, 14a, 14b, 14c is a punching metal in which a large number of water passage holes 140 are formed in a flat plate made of stainless steel. Each of the rectifying plates 14, 14 a, 14 b, 14 c is fixed between the side plates 102, 103 so as to be perpendicular to the bottom plate 101 and the side plates 102, 103 and parallel to each other at regular intervals in the length direction of the water tank 10. It is fixed by.

  Each of the rectifying plates 14, 14 a, 14 b, and 14 c can stabilize the water level on the rear side of the water tank 10 by passing the water supplied into the water tank 10 through the many water passage holes 140. Specifically, water is relaxed by passing water through a large number of water passage holes 140, bubbles contained in the water are eliminated, the water level is stabilized, and an accurate water level can be measured by a water level sensor 133 described later.

  A flow rate measuring device 13 as a flow rate measuring means is provided at the rear end of the water tank 10. The flow rate measuring device 13 is attached to the upper portion of the edge plate 105 a above the weir plate 105, and has a movable shaft 131 that is pivotally supported by bearings 130 at both ends. A proximal end portion of an arm member 132 bent at two locations in the length direction is fixed to an intermediate portion of the movable shaft 131. A water level sensor 133 is attached to the tip of the arm member 132. The water level sensor 133 is an ultrasonic level sensor and measures the distance to the lower water surface. The water level sensor is not limited to the ultrasonic level sensor, and other types of level sensors may be employed.

  Further, a base end portion of the balance rod 134 is fixed to one end side of the movable shaft 131, and a weight 135 is fixed to the tip portion thereof. The balance rod 134 always faces the vertical direction depending on the weight of the weight 135. The sensing direction of the water level sensor 133 is set to be parallel to the balance rod 134.

  Thereby, the sensing direction of the water level sensor 133 is always perpendicular to the water surface, and the water level sensor 133 can measure the shortest distance from the water surface. Even if the water tank 10 is slightly inclined at the time of installation, the movable shaft 131, the arm member 132, and the balance rod 134 rotate integrally so that the balance rod 134 faces the vertical direction, and the sensing direction of the water level sensor 133 is always the water surface. And the direction perpendicular. Thus, stable flow rate measurement is possible even if the flow rate measuring device 1 is tilted within the range of the gradient of the tunnel 4.

(Function)
The operation of the nozzle connection adapter 21 and the spray amount measuring device A will be described with reference to FIGS.

The flow rate measuring device 1 of the spray amount measuring apparatus A is used by being placed on a lifting platform of a lift work vehicle or a truck bed, for example, at the time of inspection.
FIG. 4 shows a state where the platform 17 is placed on the lifting platform 6 of the lift work vehicle and the flow rate measuring device 1 is installed thereon. A collection container 5 is installed on a lifting platform 6 behind the flow rate measuring device 1. The recovery container 5 may be provided with a drainage facility such as a pump so that the water discharged from the flow rate measuring device 1 is discharged into a drainage groove provided on the side of the road surface of the tunnel 4.

  The in-tunnel water spray device 3 installed in the tunnel 4 has a water supply pipe 30 that is piped in the length direction of the tunnel 4 to the required height of the ceiling portion of the tunnel 4. The water supply pipe 30 is provided with water spray portions 31 at regular intervals (usually at intervals of 5 m). Each water spray section 31 includes a plurality (usually 2 to 3) of water spray nozzles 32 (shown in FIG. 3) having different spray directions.

  The water spray nozzle 32 has a spray port 320 at the tip, and a fitting portion 321 having a hexagonal cross section is provided on the outer periphery. Both end portions of the insertion portion 321 protrude from the outer surface to form step portions, and the movable component bodies 233 and 233a are closed on the step portion 322 opposite to the spray port 320 of the insertion portion 321 as described above. Thereby, the nozzle engaging part 234a of the nozzle engaging plate 234 is engaged.

  The nozzle connection adapter 21 of the water intake hose 2 is connected to the water spray nozzle 32 for measuring the flow rate of the spray water, and the connection tool 24 is connected to the water supply pipe 12 or the water supply pipes 12a and 12b of the flow rate measuring device 1. The water intake hose 2 is used in accordance with the number of water spray nozzles 32. For example, two intake hoses 2 may be used, or three may be used.

  In order to connect the nozzle connection adapter 21, first, the connection port 220 of the adapter main body 22 is fitted into the water spray nozzle 32 so that the inner surface of the packing 226 is brought into close contact with the outer surface of the fitting portion 321 having a hexagonal cross section of the water spray nozzle 32. .

Next, the movable structural bodies 233 and 233a of the connection fixture 23 are closed, the main body engaging portions 235a of the main body engaging plates 235 are engaged with the engaging recesses 223 of the tube body 221, and the main body engaging portions 235b are engaged. Engage with the recess 224. Further, the nozzle engaging portion 234 a of each nozzle engaging plate 234 engages with the step portion 322 of the fitting portion 321 of the water spray nozzle 32.
Thus, the water spray nozzle 32 and the nozzle connection adapter 21 at the tip of the hose 20 of the water intake hose 2 can be mechanically connected in a watertight state. Further, the connection work can be easily performed and the connection portion is stable without being loosened.

Water is passed through the water spray section 31 to be inspected, and water is sprayed from each water spray nozzle 32 connected to the water intake hose 2. The sprayed water passes through each intake hose 2 and is supplied into the water tank 10 from the water supply pipe 12 or the water supply pipes 12a and 12b. Further, the water level is stabilized on the rear side of the water tank 10 by passing through the water passage holes 140 of each of the current plates 14, 14a, 14b, 14c. And water is continuously discharged | emitted from the weir part 106 to the collection container 5, and a water level is kept substantially constant.
And a water level is measured by the water level sensor 133, the measured value of this water level is converted into a flow rate, and the flow rate of spray water is measured.

  In addition, the spray amount measuring device A uses one set per one portion of the water spraying portion 31 of the water spraying facility, and performs the measurement work by mounting the required number on a lift car (not shown). become. By mounting the spray amount measuring device A on the lift truck, if the lift truck's loading platform is raised to a predetermined height, the work is carried out only within the loading platform, and no other aerial work vehicle or the like is required. In addition, the use of a lift vehicle is more versatile than a large and expensive dedicated vehicle, and it is possible to perform inspection work in narrow and spatially restricted places that cannot be inspected with a dedicated vehicle.

As the flow rate measuring device constituting the spray amount measuring apparatus A, in addition to the flow rate measuring device 1, a flow rate measuring device having another structure may be employed.
The flow rate measuring device 7 shown in FIG. 6 has a base 79 framed by an angle material. A defoaming tank 70 is erected and fixed to one end of the upper portion of the base 79. The defoaming tank 70 has a structure in which the upper and lower ends of the circular pipe are sealed, and an air vent valve 71 is provided at the upper end.

  On the upper side of the defoaming tank 70, water supply pipes 72, 72a, 72b are provided at three locations at equal intervals in the vertical direction. A connector 73 for connecting the connector 24 of the water intake hose 2 is attached to the tip of each of the water supply pipes 72, 72a, 72b. A measurement tube 74 is connected to the bottom of the defoaming tank 70. The measuring tube 74 is attached to the base 79 in parallel with the upper surface of the base 79, and a connection tool 75 is attached to the end on the discharge side. A drainage hose (not shown) is connected to the connection tool 75. Further, an electromagnetic flow meter 76 for measuring the flow rate of the spray water flowing in the measurement tube 74 is provided in the middle portion of the measurement tube 74.

The defoaming tank 70 has a structure in which water supply pipes 72, 72a, 72b for connecting the water intake hose 2 are provided on the upper side, and a measurement pipe 74 that is an outlet of the spray water is connected on the lower side to remove air in the sprayed water. It is said. Further, only air can be discharged from the air vent valve 71 provided at the top of the defoaming tank 70. In addition, it is possible to suppress the variation and fluctuation | variation of a flow-measurement value by setting a suitable external dimension and height dimension according to the flow volume to measure.
In addition, since the effect | action as the whole spray amount measuring apparatus provided with the flow measuring device 7 is the same as that of the said spray amount measuring apparatus A except the measuring method of flow volume, description is abbreviate | omitted.

  The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

A Spray amount measuring device 1 Flow rate measuring device 10 Water tank 101 Bottom plate 102, 103 Side plate 102a, 103a, 104a, 105a Edge plate 104 Front plate 105 Dam plate 106 Dam portion 11 Support member 12, 12a, 12b Water supply pipe 120 Fastening fixture REFERENCE SIGNS LIST 121 Connector 13 Flow measuring device 130 Bearing 131 Movable shaft 132 Arm member 133 Water level sensor 134 Balance rod 135 Weight 14, 14a, 14b, 14c Current plate 140 Water flow hole 141 Fixing tool 15 Drain pipe 150 Plug body 16 Supporting leg 17 Stand 2 Water intake hose 20 Hose 21 Nozzle connection adapter 22 Adapter main body 220 Connection port 221 Tube 221a Small diameter part 221b Large diameter part 222 Flange tool 223 Engagement recess 224 Engagement recess 225 Insertion part 226 Packing 23 Connection fixture 230 Fixing base 31 Fixing screw 232 Shaft body 233, 233a Movable component 234 Nozzle engaging plate 234a Nozzle engaging portion 235 Main body engaging plate 235a Main body engaging portion 235b Main body engaging portion 236 Spacer 237 Tip receiving member 238 Tightening screw 238a Screw portion 239 Tip receptacle 239a Screw hole 24, 25 Connector 3 Water spray device in tunnel 30 Water supply pipe 31 Water spray part 32 Water spray nozzle 320 Spray port 321 Insertion part 322 Step part 4 Tunnel 5 Collection container 6 Elevator 7 Flow meter 70 Defoaming tank 71 Air vent valve 72, 72a, 72b Water supply pipe 73 Connecting tool 74 Measuring pipe 75 Connecting tool 76 Electromagnetic flow meter 79 Base

Claims (4)

A nozzle connection adapter used in a spray amount measuring device for a water spray device in a tunnel,
Adapter body (22) attached to the hose (2,20) connected to the flow meter (1) and having a connection port (220) connected to the water spray nozzle (32) of the water spray device (3) in the tunnel When,
A connection fixture (23) attached to the connection port (220) side of the adapter body (22);
With
The connection fixture (23) can be fixed to a water spray nozzle (32) connected to the connection port (220),
The connection fixture (23) includes a nozzle engagement element that engages with the engagement element (322) of the water spray nozzle (32) when the connection fixture (23) is fixed to the water spray nozzle (32). 234,234a) are formed,
Nozzle connection adapter. A nozzle connection adapter used in a spray amount measuring device for a water spray device in a tunnel,
Adapter body (22) attached to the hose (2,20) connected to the flow meter (1) and having a connection port (220) connected to the water spray nozzle (32) of the water spray device (3) in the tunnel When,
A connection fixture (23) attached to the connection port (220) side of the adapter body (22);
With
The adapter body (22) has an engagement element (223),
The connection fixture (23) has a required number of movable components (233, 233a) that can be freely opened and closed, and a coupling means (238) for coupling the movable components (233, 233a) in a closed state,
The movable structure (233, 233a) includes a body engaging element (235, 235a) that engages with the engagement element (223) of the adapter body (22) when the movable structure (233, 233a) is closed. A nozzle engaging element (234, 234a) that engages with an engaging element (322) of a water spray nozzle (32) connected to the connection port (220) is formed,
Nozzle connection adapter. A flow rate measuring device (1, 7) for measuring the flow rate of spray water sprayed from the water spray nozzle (32) of the water spray device (3) in the tunnel;
A water intake hose (2) having a connector (24) connected to the flow rate measuring device (1, 7) on the other end side, the nozzle connection adapter (21) according to claim 1 or 2 attached to one end side,
With
Spray amount measuring device for water spray device in tunnel. The flow rate measuring device (1, 7) is connected to the required number of water supply pipes (12, 12a, 12b) to which the water intake hose (2) is connected and the spray water supplied from the water supply pipes (12, 12a, 12b). A defoaming means (14, 14a, 14b, 14c, 70) for extinguishing contained bubbles, and a flow rate measuring means (13, 76) for measuring the flow rate of the supplied spray water.
The spray amount measuring apparatus of the water spray apparatus in a tunnel of Claim 3.

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