JP2020018343A - Water spray head - Google Patents

Abstract

To easily confirm whether a water spray head is mounted at an appropriate mounting angle.SOLUTION: A water spray head 30 has a piping connection port 34 connected to water supply piping 20, and includes a head body 32 where pressurized water is supplied from the water supply piping 20, nozzles 42, 46 which are attached to the head body 32 for spraying the pressurized water, and a mounting angle detection part 50 which is provided on the head body 32 for confirming whether the head body 32 is connected at a prescribed mounting angle or not. A reference plane 34a which is horizontal when the head body 32 is connected to the water supply piping 20 at a designed mounting angle is formed at least on one of an upper part and a lower part of the piping connection port 34, and the mounting angle detection part 50 is installed on the reference plane 34a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a water spray head that sprays water into a space to be sprayed in a tunnel at the time of a fire, and in particular, it is possible to easily check whether a head body to which a nozzle is mounted is mounted at an appropriate mounting angle. Water spray head.

  2. Description of the Related Art Conventionally, in a tunnel such as a motorway, emergency equipment is installed to protect persons and vehicles from a fire accident occurring in the tunnel. Such emergency equipment includes a fire detector and an emergency telephone for monitoring and reporting fires, and a fire hydrant device for extinguishing fires and preventing fire spread. Water spray equipment for spraying water from a water spray head for the purpose of cooling or the like is provided.

  In the water spray equipment, one automatic valve device is installed in each sprinkling section at 50-meter intervals, and pressurized water is supplied from the automatic valve device to a plurality of water spray heads arranged at 5-meter intervals, and the tunnel wall surface and the tunnel road surface are Spray all at once.

  The water spray head is provided with a plurality of nozzles having different spraying distances and spray patterns, for example, a super far throw nozzle, a far throw nozzle and a near throw nozzle, on the head body in order to evenly spray water into a large spray target space such as a tunnel. By the combination of the watering patterns of these nozzles, water is sprayed almost uniformly to the watering target space in the tunnel.

  17 and 18 are explanatory views showing an embodiment of such a water spray head. FIG. 17 shows a head main body 232 connected to the water supply pipe 20 via the connection pipes 22, 24 and the elbow 26. 18 shows a two-combination head 228 provided with a long-casting nozzle 42 and a near-casting nozzle 46, and FIG. is there.

  In the present application, the “water spray head” is assumed to be a state in which a plurality of nozzles are attached to a head main body, and as a whole, the performance required in a water spray facility of a tunnel can be satisfied.

  In the conventional water spray head, each nozzle attached to the head body is manufactured with high precision so as to perform good water spraying. When the head is installed in the tunnel, the installation work is performed so that the water spray direction of each nozzle becomes a predetermined direction when the head body is installed in the tunnel.

  According to Patent Document 2, it is possible to accurately and easily position the nozzle with respect to the nozzle mounting portion of the head body based on the fact that improper mounting direction of the nozzle with respect to the head body affects water spraying performance. The invention of the water spray head described above is disclosed.

  The present invention contributes to ease of assembly, time reduction, and cost reduction in the production of the water spray head.However, at the installation site of the water spray head, the head body is damaged due to breakage or clogging of dust. Even in a case where maintenance is performed with the nozzle removed, and the nozzle is attached to the head main body after the maintenance, it is possible to provide an advantage that the nozzle can be easily positioned.

  When such a water spray head is installed in a tunnel, errors in the mounting angle of the water spray head that can occur during construction are shown in FIG. 19A, for example, in the case of the triple combination head 230 in FIG. There is an error r in the roll direction with respect to the axial direction of the pipe connection port 234 and an error p in the pitch direction with respect to the axial direction of the pipe connection port 234 as shown in FIG.

  Examples of locations where such mounting angle errors occur include, for example, the error r, the connection between the elbow 26 and the connection pipe 24, or the connection between the connection pipe 24 and the pipe connection port 234, and the error p. A connection portion between the connection pipe 22 and the elbow 26 is assumed.

  When installing such a water spray head in a tunnel, place a level on the reference surface of the water spray head (the surface that is horizontal at the design mounting angle), and install the water spray pipe at the standard mounting angle (the specified performance is exhibited). By connecting the nozzles at a design angle (a possible design angle), the water spray direction of each nozzle is determined.

  For example, as shown in FIG. 20, while checking the level 250 placed on the reference surface 234a formed at the pipe connection port 234 of the three-type combination head 230, the three-type combination head 230 is moved so that the level 250 indicates horizontal. By connecting, the nozzles have a predetermined watering angle, for example, the far-casting nozzle 42 has a watering angle of α ° from the horizontal, and the near-casting nozzle 46 has a watering angle of β ° from the horizontal.

  However, since various factors such as the shape of the tunnel cross section and the installation height of the water spray head are related to the water spray from each nozzle, even if the water spray head is connected at the standard mounting angle, In some cases, the pattern may not be formed. In such a case, the connection angle of the water spray head is changed so as to have an appropriate watering pattern after construction, and the mounting angle of each nozzle is adjusted.

JP 2012-105853 A JP-A-2005-03600

  However, the following problems (1) to (5) remain in the initial installation work at the installation site of the water spray head or the inspection work performed periodically.

(1) The installation angle at the time of construction is unknown. At the installation work of the water spray head at the installation site, the installation angle of the water spray head, that is, how many times the water spray head is tilted or viewed from the tunnel road surface or horizontal surface. It is unknown whether it is tilted.

  Currently, as a countermeasure, the water spray head is provided with a flat part that serves as a reference plane, and after mounting at the installation site, an angle meter or level is installed based on the standard performance of each water spray head so that the angle becomes a standard mounting angle. The work of adjusting the mounting angle by touching the plane portion is performed.

  However, the mounting angle of the water spray head needs to be changed as appropriate according to the shape (width and height) of the tunnel, the height and position where the water spray head is installed, and the installation conditions of surrounding obstacles (for example, a jet fan). Therefore, even if the water spray head is mounted at the standard mounting angle at the time of construction, if the mounting angle is adjusted by trial operation, the details of the adjusted mounting angle will not be known.

(2) A change in the mounting angle over time cannot be confirmed by an external inspection. The mounting angle of the water spray head cannot be denied due to factors such as vibration in the tunnel. However, in the external inspection of the water spray head, the mounting angle is incorrect. There is no way to know if it is maintained.

  The installation information is recorded for each installed water spray head, and it is possible to check the mounting angle using a goniometer or a level at the time of appearance inspection, but the inspection is carried out by restricting the traffic of vehicles in the tunnel The work has to be short and not a viable solution.

  At present, rust, breakage, breakage, etc. of the water spray head can be visually confirmed, but it has not been possible to check whether the mounting angle is appropriate and standard performance can be exhibited.

(3) No abnormalities in the installation angle can be confirmed in the water spray inspection. In the water spray inspection of the water spray head, the water spray amount is measured using a water spray test vehicle. Although abnormalities can be found, the installation angle of each water spray head has not been checked to see if it is correct, and when water is actually sprayed, water is sprayed so as to cover the tunnel section evenly, or the water is sprayed on the opposite lane. It remains unclear if it has been reached.

(4) The mounting angle after the dust clogging process is unknown If dust clogging is found in the water spray inspection of the water spray head, the water spray head must be removed to remove dust. Since it is not possible to judge whether there is any water spray inspection, each water spray head is removed and the removal work is performed.

  After removing the water spray head and removing dust, when re-installing the water spray head, since the previous mounting angle is unknown, use a goniometer or level to adjust to the standard recommended angle. It is unclear whether the installation was performed correctly at an installation angle suitable for the installation conditions.

  However, if you can actually spray water, you can check whether the installation angle is suitable for the installation conditions, but it is usually difficult to actually spray water, so it is a practical solution. hard.

(5) It is not easy to check the mounting angle. The mounting angle of the water spray head cannot be checked unless you are near the water spray head while riding on an aerial work vehicle. ), It is difficult to check the mounting angle.

  In the current water spray head for tunnels, there is such a problem to be solved regarding the mounting angle of the water spray head, which is an important factor required for exhibiting and maintaining its performance.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tunnel water spray head capable of easily checking whether the water spray head is mounted at an appropriate mounting angle.

[Mounting angle detector]
The present invention is a water spray head for spraying water in a tunnel in the event of a fire,
A head body having a pipe connection port connected to the water supply pipe, and pressurized water being supplied from the water supply pipe;
A nozzle attached to the head body and spraying pressurized water,
A mounting angle detection unit provided on the head main body and capable of confirming whether or not the head main body is connected at the initially set head mounting angle,
It is characterized by having.

[Bubble tube]
The mounting angle detection unit visually recognizes at least one of an error in the pitch direction and an error in the roll direction with respect to the axial direction of the pipe connection port as an error between the mounting angle of the connected head body and the initially set mounting angle of the head. It is a bubble tube that provides a possible display.

[Arrangement of bubble tube]
The head body has a reference surface which is horizontal when connected to the water supply pipe at a design mounting angle to the water supply pipe, and is formed at least at one of the upper and lower parts of the head body.
The bubble tube is installed on the reference plane.

[Fluorescent display]
In the bubble tube, at least one of the liquid around and inside the marker is colored in a fluorescent color.

[Movable sign]
The bubble tube includes a movable marker that can move to a bubble position in a head installation state in which the head main body is initially set.

[Bubble tube method]
The bubble tube is constituted by one cylindrical bubble tube, two cylindrical bubble tubes whose axes are orthogonal to each other, or one circular bubble tube.

[Tilt sensor]
The attachment angle detection unit is an inclination sensor that detects at least one of the inclination angle in the pitch direction and the inclination angle in the roll direction with respect to the axial direction of the pipe connection port, and outputs attachment angle information.

[Tilt sensor method]
The tilt sensor is a MEMS sensor that converts a change in capacitance or a change in magnetic characteristics due to a tilt into an angle.

[Power generation means]
The water spray head according to the present invention includes a power generation unit that generates power by vibration given from an arbitrary event including wind in a tunnel, vehicle running, and an artificial impact to drive the tilt sensor.

[Information output means]
There is provided information output means for outputting at least one of the mounting angle information and mounting angle error information indicating an error between the tilt angle detected by the tilt sensor and the designed mounting angle to the outside.

[RFID tag]
The information output unit is an RFID tag that receives power from the RFID reader / writer and transmits at least one of the attachment angle information and the attachment angle error information to the RFID reader / writer.

[Output device]
The information output unit is an output device that receives power from a connected external reading device and outputs at least one of the mounting angle information and the mounting angle error information to the reading device.

[Indicator light]
The information output unit turns on or blinks the indicator lamp when the head body is within the allowable range of the mounting angle in design.

[Basic effects]
According to the water spray head of the present invention, the head body to which the nozzle for spraying the pressurized water is mounted is provided with the mounting angle detection unit capable of confirming whether or not the mounting angle of the head is set at the initial setting. The installation angle of the water spray head, which was initially set during the test run, can be clearly checked by going to the installation location of the water spray head. The reliability of the system will increase significantly.

  In addition, even if it is confirmed that the mounting angle of the water spray head deviates from the initial setting during regular inspection work, it can be adjusted to the initial mounting angle of the head, so if a fire occurs Initial performance is guaranteed.

  In addition, even when the water spray head is removed and dust is removed, the water spray head can be adjusted to the previous mounting angle even when the water spray head is reinstalled, so that the initially set mounting angle of the water spray head can be maintained. .

  Also, it was not possible to confirm whether the performance of the water spray equipment was maintained without actually spraying water.However, since it can be easily returned to the installation angle at the time of test operation, the time and labor for actually spraying water are reduced. It becomes unnecessary.

  In addition, even in situations where on-site work is limited while the vehicle is running, the mounting angle of the water spray head can be easily adjusted with a general tool such as a pipe wrench, ensuring that no extra burden is applied to the workers. Can be adjusted.

  In addition, it is possible to perform an inspection until the water spray head is properly installed and the standard performance can be exhibited, which was not performed at the time of appearance inspection or watering inspection (it was physically difficult).

[Effect of installing a bubble tube]
If the bubble tube is placed on the lower surface (road surface of the tunnel) instead of the upper surface (the ceiling side of the tunnel) of the water spray head, the appearance can be visually inspected using binoculars etc. from the lower guard passage. Become.

  In addition, when the bubble tube is disposed on both the upper surface and the lower surface of the water spray head, the mounting angle can be checked from above when the water spray head is installed, and from below when the appearance is inspected.

  In addition, a mark indicating the bubble position of the bubble tube when the head body is within the allowable range of the predetermined mounting angle is provided, and the surroundings of the mark are set to fluorescent color, and a fluorescent agent is mixed with the liquid in the bubble tube, Even in the dark tunnel, the inspection work can be easily seen from below, and the inspection work can be performed more efficiently.

[Effect of installing tilt sensor]
If you use an RFID reader / writer or an RFID reader / writer, the initial setting angle of the head during test operation after installation of the water spray head can be clearly checked from the observer's passage or on the road surface without approaching the water spray head, Conventionally, it is possible to easily check the mounting angle of the water spray head, which could not be performed at the time of appearance inspection, so that labor for inspection work can be saved, and maintainability and reliability of the water spray equipment can be significantly improved.

  Further, since the power generation means for generating power by the vibration power generation element is provided and the inclination sensor is driven by the power generation means, even when power for driving the inclination sensor cannot be supplied from the outside, the inclination sensor detects the inclination based on the inclination angle detected by the inclination sensor. The installation angle of the water spray head can be checked.

Explanatory drawing showing the installation state of the tunnel water spray equipment in a cross section of the tunnel Explanatory drawing showing an embodiment of a water spray head according to the present invention. Explanatory diagram showing an embodiment in which a bubble tube is installed as an attachment angle detection unit Explanatory drawing showing the error of the mounting angle detected by the bubble tube Explanatory drawing showing another embodiment of the bubble tube Explanatory drawing showing a fixed marker indicating the bubble position when the head body is at a predetermined mounting angle Explanatory drawing showing a movable sign that can be moved to the bubble position when checking the mounting angle Explanatory drawing showing a bubble tube displayed by fluorescence Explanatory diagram showing an embodiment in which a tilt sensor is installed as a mounting angle detection unit FIG. 9 is a block diagram showing a functional configuration of the embodiment shown in FIG. Explanatory drawing showing another embodiment in which a tilt sensor is installed as a mounting angle detection unit Explanatory drawing showing another embodiment in which a tilt sensor is installed as a mounting angle detection unit FIG. 11 is a block diagram showing a functional configuration of the embodiment shown in FIG. 11 and FIG. Explanatory drawing showing the structure of a magnetostrictive vibration power generation element used as a vibration power generation element Explanatory drawing showing the structure of a piezoelectric vibration power generation element used as a vibration power generation element Explanatory drawing showing another structure of a piezoelectric vibration power generation element used as a vibration power generation element Explanatory drawing showing a conventional water spray head combining two types of nozzles Explanatory drawing showing a conventional water spray head combining three types of nozzles Explanatory drawing showing an error in the mounting angle of the water spray head shown in FIG. Explanatory drawing showing the setting method of the mounting angle of the water spray head shown in FIG.

[Overview of tunnel water spray equipment]
FIG. 1 is an explanatory view showing an installation state of a tunnel water spray facility to which the present invention is applied in a cross section of a tunnel. As shown in FIG. 1, a water supply pipe 20 is set up through a concrete skeleton 10 of a tunnel, and a water spray head 30 is connected to a portion of the water supply pipe 20 protruding from an upper portion of a tunnel wall 12 via a connection pipe 22. It is connected. In the present embodiment, the water spray head 30 is provided with the ultra-long throw nozzle 38, the far throw nozzle 42, and the near throw nozzle 46 (three-type combination head), but other types may be used.

  The water supply pipe 20 is branched and connected to the water supply main pipe 16, and an automatic valve device 18 is provided on the way. The automatic valve device 18 is opened and controlled by remote control in the event of a fire in the tunnel, and supplies pressurized water supplied from the fire pump to the water supply main pipe 16 to the water spray head 30 through the water supply pipe 20. Water is sprayed on the space to be sprayed including the tunnel wall surface 12 and the tunnel road surface 14 to protect the concrete skeleton 10 and suppress fire.

[Configuration of water spray head]
FIG. 2 is an explanatory view showing an embodiment of the water spray head according to the present invention corresponding to the conventional water spray head shown in FIG. 18, and FIG. 2 (A) shows the water spray head 30 shown in FIG. 2B shows a side view of the state in which the super-far projection nozzle 38 is omitted, and shows a portion of the far projection nozzle 42 and the near projection nozzle 46 with the super-distant projection nozzle 38 omitted. FIG. (Right side).

  As shown in FIG. 2, the water spray head 30 of the present embodiment has a pipe connection port 34 in which a screw is formed on the inner peripheral surface on the side (horizontal direction) of the head main body 32, and is ultra-distant upward (vertically). A projection nozzle mounting portion 36 is formed. Further, a long projection nozzle mounting portion 40 is formed obliquely upward of the head main body 32 and a near projection nozzle mounting portion 44 is formed diagonally downward. Is provided with a near throw nozzle 46.

  Reference surfaces 34a and 34b are formed in the upper and lower portions of the pipe connection port 34 as reference planes (surfaces which are horizontal at a design mounting angle) for detecting the mounting angle of the water spray head 30. An attachment angle detection unit 50 is provided on each of the reference surfaces 34a and 34b. The mounting angle detection unit 50 detects the errors of the mounting angles of the water spray head 30 as the angular errors r and p in the directions (water spraying directions) of the long throw nozzle 42 and the near throw nozzle 46 as shown in FIGS. Can be detected (details will be described later).

  In the present embodiment, the reference surfaces 34a and 34b are formed at the upper and lower portions of the pipe connection port 34, but depending on the installation state of the water spray head 30, either the upper or lower portion may be used. The number of mounting angle detectors 50 is one. Further, for workability during construction, the pipe connection port 34 is formed in a hexagonal shape (hexagonal nut surface), but need not be hexagonal if the upper and lower reference surfaces 34a and 34b are formed. Even when a plurality of reference surfaces are formed, the mounting angle detecting unit 50 may be installed on one of the upper side and the lower side.

[Structure of bubble tube as attachment angle detector]
FIG. 3 is an explanatory diagram showing an embodiment in which a bubble tube is installed as the attachment angle detection unit 50 in FIG. In the present embodiment, a bubble tube unit 52 composed of two cylindrical bubble tubes 58a and 58b whose axial directions are orthogonal to each other is fixed to a reference surface 34a on the upper side of the pipe connection port 34 by bolts 48. With the bubble tube unit 52, the inclination of the water spray head 30 in two directions, that is, the angle errors r and p in the two directions of the mounting angle shown in FIG. 2 can be detected.

  The cylindrical bubble tube (including a circular bubble tube described later) of the present embodiment has a structure similar to that generally used as a level, and is a glass sealed container housed in a metal case. Alternatively, a liquid such as alcohol or ether is sealed in a plastic closed container leaving bubbles of a predetermined size, and a reference line (marked line) for visually checking the position of the bubbles is provided on the surface of the closed container. (Details will be described later).

  FIG. 4 is an explanatory diagram showing an error of the mounting angle detected by the bubble tube. As shown in FIG. 4, the water spray head 30 has a pipe connection port 34 of the head body 32 connected to the connection pipe 24, and further connected to the water supply pipe 20 via the elbow 26 and the connection pipe 22 (see FIG. 1). ).

  A bubble tube unit 52 is provided on a reference surface 34a formed at the pipe connection port 34. The difference between the actual mounting angle of the head main body 32 and the designed mounting angle is the pitch of the pipe connection port 34 with respect to the axial direction. The angle error p in the direction P can be visually recognized by the cylindrical bubble tube 58a, and the angle error r in the roll direction R can be visually recognized by the cylindrical bubble tube 58b.

  When adjusting the mounting angle of the water spray head 30, while checking the relationship between the bubble positions of the cylindrical bubble tubes 58a and 58b and the fixed mark (details will be described later), if the pitch direction P is adjusted, the connection tube 22 When the roll direction R is adjusted, the connection between the elbow 26 and the connection pipe 24 or the connection between the connection pipe 24 and the pipe connection port 34 is relatively rotated, and the design mounting angle is adjusted. Or, it is fixed within the allowable range.

  Here, the error of the mounting angle of the water spray head 30 is the angle error r in the roll direction R and the angle error p in the pitch direction P shown in FIG. This corresponds to an angle error r of the direction of the nozzle 46 (water spray direction) and an angle error p shown in FIG.

  FIG. 5 is an explanatory view showing another embodiment of a bubble tube serving as an attachment angle detecting unit. The bubble tube unit 54 of FIG. 5A is constituted by one cylindrical bubble tube 58. The bubble tube unit 56 of (B) is constituted by one circular bubble tube 60.

  The bubble tube unit 54 in FIG. 5A only needs to be able to detect and detect only one direction of the mounting angle depending on the installation state of the water spray head 30. For example, if the angle error p in the pitch direction P can be detected as shown in FIG. When the bubble tube unit 56 shown in FIG. 5B is used in a good case or the like, as in the case of the bubble tube unit 52 shown in FIG. 3, two directions of the mounting angle of the water spray head 30, for example, as shown in FIG. An error between the angle error p in the pitch direction P and an angle error r in the roll direction R can be detected.

  FIG. 6 is an explanatory diagram of a reference line serving as a fixed marker indicating a bubble position when the head main body is at a predetermined mounting angle in the bubble tube. FIG. 6A illustrates the bubble tube unit 54 of FIG. 6 (B) shows the bubble tube unit 56 of FIG. 5 (A), and FIG. 6 (C) shows the bubble tube unit 58 of FIG. 5 (B).

  As shown in FIG. 6A, the cylindrical bubble tubes 58a and 58b of the bubble tube unit 52 have a pair of first reference lines 64 indicating the positions of the bubbles 62 when the head body 32 is at a design mounting angle. And a pair of second reference lines 66 indicating the positions of the bubbles 62 when the head main body 32 is within the allowable range of the designed mounting angle.

  Similarly, the cylindrical bubble tube 58 of the bubble tube unit 54 shown in FIG. 6B includes a pair of first reference lines 64 indicating the position of the bubble 62 when the head main body 32 is at a design mounting angle, The head body 32 includes a pair of second reference lines 66 indicating the positions of the bubbles 62 when the head body 32 is within the allowable range of the mounting angle in the design.

  Further, the circular bubble tube 60 of the bubble tube unit 56 shown in FIG. 6 (C) has four crosses arranged in a cross shape indicating the position of the bubble 62 when the head main body 32 is at the designed mounting angle. One reference line 68 and a circular second reference line 70 indicating the position of the bubble 62 when the head main body 32 is within the allowable range of the designed mounting angle are provided.

  FIG. 7 is an explanatory diagram of a movable marker that can be moved to a bubble position when the head body is currently installed in the bubble tube, for example, when the mounting angle is appropriately adjusted. FIG. FIG. 7B shows a state before the movable marker is moved, and FIG. 7B shows a state where the movable marker is moved to the bubble position.

  As shown in FIG. 7, the cylindrical bubble tube 58 does not have a fixed reference line (fixed marker) as shown in FIG. 6, but has a movable movable marker 72 instead. The movable marker 72 has an opening 72 a having a reference surface 74 for confirming the position of the bubble 62, and can move the reference surface 74 to the position of the bubble 62.

  For example, after installation of the water spray head, if the mounting angle of the water spray head is adjusted so as to have an appropriate watering distance and watering pattern while performing a test run, the mounting angle may differ from the design mounting angle. In some cases, in the case of a bubble tube having a reference line, the bubble position of the bubble tube may not fall within the reference line.

  FIG. 7A shows such a case, in which the bubble 62 of the cylindrical bubble tube 58 is off the reference surfaces 74 on both sides at the initial position of the movable marker 72. From this state, by moving the movable marker 72 in the S direction so that the bubbles 62 enter the reference surfaces 74 on both sides, the position of the movable marker 72 when the mounting angle of the water spray head 30 is appropriately adjusted is changed. Is set.

  FIG. 7B shows a state in which the position of the movable marker 72 is set as described above. If the bubble 62 is located in the reference surfaces 74 on both sides, and the bubble 62 has not moved at the time of the subsequent inspection, FIG. It can be confirmed that the mounting angle of the water spray head 30 is appropriate. It is desirable that the movable marker 72 be provided with a mechanism that is held in this state so as not to be displaced by vibration or the like.

  FIG. 8 is an explanatory diagram showing an example of a bubble tube to be fluorescently displayed using the bubble tube unit 56 of FIGS. 5B and 6C, and FIG. 8A is a second reference line. FIG. 8 (B) shows a configuration in which the liquid G2 in the circular bubble tube 60 is colored in a fluorescent color, and FIG. 8 (C) shows a configuration in which the periphery of the second reference line 70 is colored. This is a form in which both G1 and the liquid G2 in the circular bubble tube 60 are colored in a fluorescent color.

  By performing the fluorescent display on the bubble tube in this way, even in the inspection operation in the dark tunnel, it is easy to visually check the lower side, and the inspection operation can be performed more efficiently. Further, as shown in FIG. 8C, when the periphery G1 of the second reference line 70 and the liquid G2 in the circular bubble tube 60 are colored in a fluorescent color, the periphery G1 of the second reference line 70 and the circle G1 are circular. By coloring the liquid G2 in the bubble tube 60 with a different fluorescent color, the position of the bubble can be easily confirmed.

[Configuration of tilt sensor serving as mounting angle detector]
FIG. 9 is an explanatory diagram showing an embodiment in which an inclination sensor is installed as the attachment angle detection unit 50 in FIG. In the present embodiment, the inclination sensor unit 82 is fixed to the reference surface 34 a on the upper side of the pipe connection port 34 by a bolt 48. In the inclination sensor unit 82, an inclination sensor 80 as an attachment angle detection unit, a power generation unit 90 as power generation means, and an RFID (Radio Frequency IDentifier) tag 92 as information output means are integrated.

  If the inclination sensor 80 is for two-axis measurement, the inclination sensor unit 82 can detect the inclination of the water spray head 30 in two directions, that is, the two-directional angular errors r and p of the mounting angle shown in FIG. For measurement, any of the angle errors r and p can be detected. In the present embodiment, the tilt sensor uses a MEMS sensor that converts a change in capacitance or a change in magnetic characteristics due to tilt into an angle, but may use another type.

  Further, the tilt sensor unit 82 includes an LED 120 as an indicator light that is turned on when the head main body 32 is within the allowable range of the mounting angle in design. The LED 120 is illuminated when the head main body 32 is at the correct mounting angle, turned off when the head main body 32 is inaccurate, flashes quickly when approaching the correct mounting angle, and flashes slowly when moving away from the head, etc. Then, the adjustment becomes easier.

  FIG. 10 is a block diagram showing a functional configuration of the embodiment shown in FIG. As shown in FIG. 10, the tilt sensor unit 82 includes a tilt sensor 80, a power generation unit 90, an RFID tag 92, and an LED 120. In addition, an RFID reader / writer 94 that transmits and receives information regarding the mounting angle of the water spray head 30 to and from the RFID tag 92 is also shown.

  The inclination sensor 80 includes a detection unit 106 and a drive circuit 108, and detects at least one of the inclination angle p in the pitch direction and the inclination angle r in the roll direction with respect to the axial direction of the pipe connection port 34 and outputs mounting angle information. I do. In the present embodiment, the detection unit 106 uses a MEMS (Micro Electro Mechanical Systems) sensor that converts a change in capacitance or a change in magnetic characteristics due to tilt into an angle, but may use another type. Absent.

  The power generation unit 90 is constituted by the vibration power generation element 110 and the power supply circuit 112, and includes arbitrary events including wind in a tunnel, vehicle running, and artificial impact (such as hitting a pipe with a hammer during construction or inspection). Vibration power is generated by receiving the vibration given by the device and converting the vibration energy into electric energy.

  As the vibration power generating element 110, a magnetostrictive vibration power generating element that generates power by a magnetostrictive action by vibration or a piezoelectric vibration power generating element that generates power by a piezoelectric action by vibration is used (details will be described later). The power supply circuit 112 rectifies and smoothes the alternating power output by the power generation action of the vibration power generation element 110, converts the alternating power into DC power, and supplies DC power to the drive circuit 108 of the tilt sensor 80, and the drive circuit 108 The detection unit 106 is driven by the power supply to output the mounting angle information.

  The RFID tag 92 is a passive-type IC tag that converts a radio wave received from the RFID reader / writer 94 into electric power and responds to the electric power, and includes a control unit 114, a communication unit 116, and a memory 118. Passive type IC tags having a communicable distance of several meters have been put to practical use, and by using this, it is possible to transmit and receive various information from the tunnel road surface 14 using the RFID reader / writer 94. .

  The communication unit 116 includes a rectifier circuit that rectifies radio waves from the RFID reader / writer 94 and converts the radio waves into DC power. The control unit 114 responds to a read request from the RFID reader / writer 94 received by the communication unit 116 to the memory 118. And the mounting angle information input from the inclination sensor 80.

  If the control unit 114 receives a write request such as an initial value of the mounting angle information from the RFID reader / writer 94 and stores the write request in the memory 118, the tilt sensor responds to the read request from the RFID reader / writer 94. Attachment angle error information indicating an error between the inclination angle detected by 80 and the designed attachment angle may be returned.

  Further, the control unit 114 turns on the LED 120 when the head main body 32 is at an accurate mounting angle. The LED 120 may blink quickly when the head main body 32 approaches an accurate mounting angle, and blink slowly when the head body 32 moves away.

  The RFID reader / writer 94 includes a control unit 122, a communication unit 124, a memory 126, a display unit 128, an operation unit 130, and a power supply unit 132. The control unit 122 transmits a read request signal to the RFID tag 92 from the communication unit 124 when a read request is issued to the RFID tag 92 by operating the operation unit 130 during a visual inspection or a watering test. When receiving the response of the identification information, the attachment angle information or the attachment angle error information from, the information is displayed on the display unit 128 composed of a liquid crystal display or the like.

  In addition, the control unit 122 associates the identification information and the attachment angle information received from the RFID tag 92 and writes them in the memory 126, and when the identification information and the attachment angle information are received again from the RFID tag 92, An error between the received mounting angle information and the stored mounting angle information may be displayed on the display unit 128.

  FIG. 11 shows another embodiment in which a tilt sensor is installed as the mounting angle detecting unit 50 in FIG. 2, and is an explanatory diagram showing an example of a two-type combination head as shown in FIG. In the embodiment shown in FIGS. 9 and 10, the inclination sensor as the attachment angle detection unit, the power generation unit as the power generation unit, and the RFID tag as the information output unit are integrated, but in this embodiment, the attachment angle detection unit, The power generation means and the information output means are individually arranged.

  As shown in FIG. 11, the water spray head 28 includes a long throw nozzle 42 and a near throw nozzle 46 in the head main body 32, an inclination sensor 80 above the pipe connection port 34, an output device 96 as information output means below the pipe connection port 34, The power generation unit 90 is fixed on the connection pipe 24. The tilt sensor 80 and the power generation unit 90 are connected by a power cable 100, and the tilt sensor 80 and the output device 96 are connected by a signal cable 102.

  The output device 96 operates by being supplied with power from an external reader physically connected by a cable or the like via the connector 138, and outputs attachment angle information and attachment angle error information in response to a read request from the reader. I do. In addition, the output device 96 may include the LED 120 as in the tilt sensor unit 82 illustrated in FIGS. 9 and 10.

  The installation location of the output device 96 does not have to be at the lower part of the pipe connection port 34, but may be at another location of the head main body 32 or on the connection pipes 24 and 22. The installation location of the power generation unit 90 may not be on the connection pipe 24, but may be the water spray head 28 or another location. Further, as shown by an imaginary line (two-dot chain line), a plurality of power generation units 90 can be connected in series or in parallel.

  FIG. 12 is an explanatory view of another embodiment in which an inclination sensor is installed as the attachment angle detection unit 50 of FIG. 2. FIG. 12A shows a structure in which the attachment angle detection unit and the information output unit are integrated. FIG. 12B shows a structure in which the attachment angle detection unit and the power generation unit are integrated.

  The tilt sensor unit 84 shown in FIG. 12A integrates a tilt sensor 80 as a mounting angle detector and an output device 96 as information output means, and is the same as the tilt sensor unit 82 in FIG. 9 and the tilt sensor 80 in FIG. In addition, a power generation unit 90 fixed on the pipe connection port 34 and installed at an arbitrary place as a power generation means is connected by a power cable 100. In the tilt sensor unit 86 shown in FIG. 12B, the tilt sensor 80 and the power generation unit 90 are integrated and fixed on the pipe connection port 34, and the output device 96 installed at an arbitrary place is connected to the signal cable 102. Connected by

  FIG. 13 is a block diagram showing a functional configuration of the embodiment shown in FIGS. 11 and 12. In the embodiment shown in FIG. 10, an RFID tag 92 is an output device 96 and an RFID reader / writer 94 is a reading device. 98, but the functions of the tilt sensor 80 and the power generation unit 90 are the same.

  The output device 96 includes a control unit 114, an input / output interface 136, and a memory 118. The control unit 114 is operated by being supplied with power from the reading device 98 via the connection cable 102 connected to the input / output interface 136, and responds to a reading request from the reading device 98 with the identification information read from the memory 118 and the inclination. It responds with the mounting angle information input from the sensor 80.

  If the control unit 114 receives a write request such as an initial value of the mounting angle information from the reading device 98 and stores the request in the memory 118, the tilt sensor 80 responds to the read request from the reading device 98. Attachment angle error information indicating an error between the detected inclination angle and the designed attachment angle may be returned.

  Further, the control unit 114 turns on the LED 120 when the head main body 32 is at an accurate mounting angle. The LED 120 may blink quickly when the head body 32 approaches an accurate mounting angle, and blink slowly when the head body 32 moves away.

  The reading device 98 includes a control unit 122, an input / output interface 134, a memory 126, a display unit 128, an operation unit 130, and a power supply unit 132. The control unit 122 sends a read request signal to the output device 96 from the input / output interface 134 via the connection cable 102 when a read request is issued to the output device 96 by operating the operation unit 130 during a visual inspection or a watering test. When transmitting and receiving the response of the identification information, the mounting angle information, or the mounting angle error information from the output device 96, the information is displayed on the display unit 128 including a liquid crystal display or the like.

  Further, the control unit 122 associates the identification information and the attachment angle information received from the output device 96 with each other and writes them in the memory 126. When the identification information and the attachment angle information are received again from the output device 96, the same identification information An error between the received mounting angle information and the stored mounting angle information may be displayed on the display unit 128.

[Magnetostrictive vibration power generation element]
FIG. 14 is an explanatory view of the structure and operation principle of a magnetostrictive vibration power generation element used as the vibration power generation element of the present embodiment. FIG. 14 (A) shows a front view, FIG. 14 (B) shows a side view, FIG. 14C shows a change in the magnetic field lines with respect to the displacement of the magnetostrictive element (the coil is omitted), and FIG. 14D shows the principle of power generation.

  As shown in FIGS. 14A and 14B, the magnetostrictive vibration power generating element 140 has two plate-shaped magnetostrictive elements 146 a and 146 b wound with coils 148 a and 148 b arranged in parallel. A parallel beam having the other end connected to the movable section 144 is formed, and the fixed section 142 and the movable section 144 are attracted by the magnet 150 and connected by the yoke 152.

  As shown in FIG. 14C, when the fixed portion 142 is fixed to the vibrating body 200, and the bending force F in the upward direction is applied to the movable portion 144 by the vibration of the vibrating body 200, the parallel beam bends, and the magnetostriction occurs. A compressive force is applied to the element 146a to reduce the lines of magnetic force, while a tensile force is applied to the magnetostrictive element 146b to increase the lines of magnetic force.

  Therefore, as shown in FIG. 14D, when the vibration V is applied to the parallel beam, the lines of magnetic force applied to the magnetostrictive elements 146a and 146b change alternately, and electromotive force Vp is generated in the coils 148a and 148b. Vibration energy is converted to electrical energy.

[Piezoelectric vibration power generation sheet element]
FIG. 15 is an explanatory diagram of a structure of a sheet-shaped piezoelectric vibration power generation element used in the power generation unit of the present embodiment. FIG. 15A shows a side view, and FIG. 15 (C) shows the power generation principle.

  As shown in FIG. 15, the piezoelectric vibration power generation sheet element 160 used in the present embodiment has a lower electrode 168 formed on the surface of a vibration plate 162, a piezoelectric film 164 formed thereon, and a piezoelectric film 164 formed thereon. An upper electrode 166 is formed on the surface of the conductive film 164, and the diaphragm 162 is fixed by bolts 172 on a fixing table 170 installed on the vibrating body 200.

  The vibration V of the vibrating plate 162 is excited by the vibration of the vibrating body 200, and the vibration V of the vibrating plate 162 causes distortion in the piezoelectric film 164. In this configuration, electric charges can be obtained via lead wirings 174 bonded to each other using a conductive adhesive.

  The charge obtained via the lead wiring 174 is converted into a voltage by a charge amplifier (charge amplifier), so that a voltage signal proportional to the acceleration can be obtained. Therefore, when the piezoelectric vibration power generation sheet element 160 of FIG. 15 is used as the vibration power generation element 110 of the power generation unit 90 shown in FIGS. 10 and 13, a charge amplifier is provided before the power supply circuit unit 112. The same applies to the case where another vibration power generation element is used.

  In the piezoelectric vibration power generation sheet element 160 shown in FIG. 15, since the vibration plate 162 is formed of a flexible sheet material, the vibration plate 162 is directly adhered and fixed to the vibration body 200 without using the fixing table 170. Can also be used.

[Piezoelectric vibration power generation element]
FIG. 16 is an explanatory diagram showing the structure of a compression-type piezoelectric vibration power generation element used as the vibration power generation element of the present embodiment. As shown in FIG. 16A, in the piezoelectric vibration power generation element 180, a piezoelectric element 182 provided with an upper electrode 184 and a lower electrode 186 on both sides is arranged through an upright bolt 190, and is placed thereon. An inertia weight 188 is arranged, fastened and fixed by a nut 192, and fixed to the vibrating body 200.

  The piezoelectric vibrating power generating element 180 constitutes a system that applies a certain preload by tightening the nut 192 and that includes the mass of the piezoelectric element 182, the spring property of the bolt 190, and the inertial weight 188.

  When a certain amount of electric charge is generated in the piezoelectric element 182 by a certain preload, and the vibration of the vibrating body 200 causes the piezoelectric vibration power generation element 180 to accelerate upward in the figure, the state shown in FIG. As described above, when the force of further compressing the piezoelectric element 182 is applied (pressurized) by the inertia of the inertial weight 188, and the piezoelectric vibration power generation element 180 is accelerating downward in the figure, on the other hand, FIG. As shown in (5), a force is applied in a direction to weaken the compression of the piezoelectric element 182 (decompression).

  In this way, the charge generated at both poles of the piezoelectric element 182 increases or decreases according to the pressurization and depressurization repeated by the vibration V of the vibrating body 200, and the charge obtained via the lead wiring 194 is converted into a voltage by the charge amplifier. Thus, a voltage proportional to the acceleration can be obtained.

[Modification of the present invention]
(Configuration of tilt sensor unit)
In the above embodiment, when the information output means is the output device 96, as shown in FIG. 11, the inclination sensor 80, the power generation unit 90, and the output device 96 are independent units. As shown in FIG. 12B, a tilt sensor unit 84 is integrated with a tilt sensor 80 and an output device 96, and the power generation unit 90 is an independent unit. Although an example in which the sensor 80 and the power generation unit 90 are integrated and the output device 96 is an independent unit is taken as an example, a unit in which the inclination sensor 80, the power generation unit, and the output device 96 are integrated may be used.

(Omission of power generation means)
An output device 96 is provided as information output means, and when power is supplied from an external reading device 98, if the tilt sensor 80 is driven by the power supply, the configuration in which the power generation unit 90 is omitted, that is, FIG. A configuration in which the power generation unit 90 does not exist in the embodiment shown in FIG.

(Other)
Further, the present invention includes appropriate modifications without impairing the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Concrete frame 12: Tunnel wall surface 14: Tunnel road surface 16: Water supply main pipe 18: Automatic valve device 20: Water supply pipe 22, 24: Connection pipe 26: Elbow 28, 30: Water spray head 32: Head body 34: Pipe connection Mouth 36: Ultra-long projection nozzle attachment section 38: Ultra-long projection nozzle 40: Far projection nozzle attachment section 42: Far projection nozzle 44: Near projection nozzle attachment section 46: Near projection nozzle 48: Bolt 50: Mounting angle detection section 52, 54, 56: bubble tube unit 58: cylindrical bubble tube 60: circular bubble tube 62: bubble 64, 68: first reference line (fixed marker)
66, 70: Second reference line (fixed marker)
72: movable marker 74: reference surface 76: first fluorescent display (around fixed marker)
78: Second fluorescent display (liquid inside)
80: tilt sensors 82, 84, 86: tilt sensor unit 90: power generation unit 92: RFID tag 94: RFID reader / writer 96: output device 98: reading device 100: power cable 102: signal cable 104: connection cable 106: detection unit 108: drive circuit 110: vibration power generation element (A: magnetostrictive vibration power generation element, B, C: piezoelectric vibration power generation element)
112: power supply circuit 114, 122: control unit 116, 124: communication unit 118, 126: memory 120: LED (indicator light)
128: display unit 130: operation unit 132: power supply unit 134, 136: input / output interface 138: connector 140: magnetostrictive vibration power generation element 142: fixed unit 144: movable unit 146: magnetostrictive element 148: coil 150: magnet 152: yoke 160: piezoelectric vibrating piezoelectric sheet element 162: vibrating plate 164: piezoelectric film 166: upper electrode 168: lower electrode 170: fixing base 172: bolt 174: lead wiring 180: piezoelectric vibrating power generating element 182: piezoelectric element 184: upper part Electrode 186: Lower electrode 188: Inertial weight 190: Bolt 192: Nut 194: Lead wiring 200: Vibrating body 228: Double combination head 230: Triple combination head 232: Head body 234: Piping connection port 250: Level

Claims (13)

A water spray head that sprays water into the tunnel during a fire,
A head body having a pipe connection port connected to the water supply pipe, and pressurized water being supplied from the water supply pipe;
A nozzle attached to the head body and spraying the pressurized water,
A mounting angle detection unit provided on the head main body, capable of confirming whether or not the head main body is connected at the initially set head mounting angle,
A water spray head comprising:
2. The water spray head according to claim 1, wherein the mounting angle detector detects an error between an attached angle of the connected head main body and an initially set mounting angle of the head with respect to an axial direction of the pipe connection port. A water spray head, which is a bubble tube that performs a display in which at least one of a pitch direction error and a roll direction error is visually recognized.
In the water spray head according to claim 2,
In the head body, a reference plane that is horizontal when connected to the water supply pipe at the design mounting angle is formed on at least one of an upper part and a lower part of the head body,
The water spray head, wherein the bubble tube is installed on the reference surface.
The water spray head according to claim 2, wherein at least one of the liquid around and inside the marker is colored in a fluorescent color in the bubble tube.
3. The water spray head according to claim 2, wherein the bubble tube includes a movable marker that is movable to a bubble position when the head main body is initially set in a head installation state. .
3. The water spray head according to claim 2, wherein the bubble tube is formed of one cylindrical bubble tube, two cylindrical bubble tubes whose axes are orthogonal to each other, or one circular bubble tube. And water spray head.
2. The water spray head according to claim 1, wherein the attachment angle detection unit detects at least one of an inclination angle in a pitch direction and an inclination angle in a roll direction with respect to the axial direction of the pipe connection port, and detects the attachment angle information. A water spray head comprising an output inclination sensor.
8. The water spray head according to claim 7, wherein the tilt sensor is a MEMS sensor that converts a change in capacitance or a change in magnetic characteristics due to the tilt into an angle.
8. The water spray head according to claim 7, further comprising a power generation unit that generates power by vibration given from an arbitrary event including wind in a tunnel, vehicle running, and an artificial impact to drive the tilt sensor. A water spray head characterized in that:
8. The water spray head according to claim 7, wherein at least one of the mounting angle information and mounting angle error information indicating an error between the tilt angle detected by the tilt sensor and the designed mounting angle is output to the outside. A water spray head comprising:
11. The RFID tag according to claim 10, wherein the information output unit receives power from an RFID reader / writer and transmits at least one of the attachment angle information and the attachment angle error information to the RFID reader / writer. A water spray head, characterized in that:
11. The water spray head according to claim 10, wherein the information output unit receives power from a connected external reader and outputs at least one of the attachment angle information and the attachment angle error information to the reader. A water spray head characterized in that the water spray head is an output device.
  11. The water spray head according to claim 10, wherein the information output unit turns on or blinks an indicator lamp when the head main body is within an allowable range of the designed mounting angle. head.

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