JPH10140625A - Fire hydrant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hydrant easily mountable of a measuring instrument for hydraulic management in a water pipe or water storage tank by providing a hydrant body having a vertical passage opened to both upper and lower surfaces and a branch passage extended sideways from the vertical passage, and allowing the branch passage to communicate with a fire hose connecting port in the middle through an opening and closing mechanism. SOLUTION: A hydrant body 1 has a vertical passage 2 and a branch passage 3 in the inner part, the vertical passage 2 is opened to both upper and lower surfaces of the hydrant body 1 and has a lid plate 4 mounted on the upper opening part, and the branched passage 3 is branched sideways from the middle of the vertical passage 2. The branched passage 3 is allowed to communicate with a fire hose connecting port 6 through an opening and closing mechanism 5, and the hose connecting port 6 is generally shielded by a lid fitting 7. In the opening and closing mechanism 5, a valve stem 8 is vertically moved in screw manner by the rotation of the valve stem 8, and a valve body 9 mounted on the lower end of the valve stem 8 makes contact with and separates from a valve seat surface to open and close the passage. In a hydraulic measurement, the lid plate 4 mounted on the vertical passage 2 is removed to set a measuring instrument, and a detecting bar is inserted into a water pipe through the vertical passage 2, whereby various hydraulic inspection in the pipe can be easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fire hydrant which is installed upright in a water pipe or a water storage tank arranged underground, and more particularly to a fire hydrant which is convenient for performing hydraulic inspection of tap water. Related.

[0002]

2. Description of the Related Art A conventional fire hydrant has a structure in which a branch pipe is formed upright from an underground water pipe, and a fire hose connection port is provided through the branch pipe. Further, the conventional fire hydrant has only a structure for a single purpose, that is, a water intake function in case of fire, and no consideration is given to its use for other purposes.

[0003]

In recent years, water supply has become widespread, and pipes have become complicated, so that the necessity of hydraulic management is increasing. For this hydraulic management, in each part of the water pipeline,
It is necessary to periodically inspect the water pressure, flow velocity, water quality, and the like. For this inspection, it is indispensable to insert the detector of the measuring instrument into the water pipe. However, there is no suitable place in the conventional water pipe that allows the measuring instrument to be inserted into the main pipe without water interruption, which hinders inspection work. Fire hydrants are installed at appropriate intervals in almost the entire area of water pipes, so it would be very convenient if measurements could be made at the position of the fire hydrants. Due to the lack of structural considerations, measurement with a fire hydrant was not possible.

In view of the above, the present invention has been made to provide a fire hydrant which is provided in a water pipe or a water tank and can easily be attached with a measuring instrument for hydraulic management. Another object of the present invention is to provide a fire hydrant that can be performed without interrupting the water pipe or the like during hydraulic inspection.

[0005]

According to the technical means of the fire hydrant of the present invention, the cock barrel has an upright path opening on both upper and lower surfaces and a branch path extending laterally from the upright path. The road is
It is in communication with the fire hose connection port via the opening / closing mechanism in the middle.

According to the present invention, a short pipe for extension can be connected to the upper surface of the upright path.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fire hydrant according to the present invention is described below.
Description will be made based on the embodiment shown in FIG. As shown in FIG. 1, reference numeral 1 denotes a stopper body, which has an upright path 2 and a branch path 3 therein. The upright path 2 is open on both the upper and lower surfaces of the cock cylinder 1, and the branch path 3 branches laterally from an intermediate portion of the upright path 2. In addition, a cover plate 4 is attached to the upper opening of the upright path 2,
The opening is blocked. The cover plate 4 is bolted and detachable, and is detached during hydraulic measurement, and a measuring instrument is attached thereto.

As shown in FIG. 2, the branch passage 3 communicates with a fire hose connection port 6 through an opening / closing mechanism 5.
The hose connection port 6 is normally shielded by a cover fitting 7. In the opening / closing mechanism 5 of the embodiment, when the valve rod 8 is rotated, the valve rod 8 moves up and down by a screw method, and the valve body 9 attached to the lower end of the valve rod 8 comes into contact with and separates from the valve seat surface. And open and close the flow path.

The mode of use of the fire hydrant will be described with reference to FIG. Reference numeral 10 denotes a fire hydrant installation hole provided below the ground, and 11 denotes a hole cover thereof. This hole 10
Is provided directly above the water pipe 12 or the water storage tank, and a branch pipe 13 rising upright from the water pipe 12 or the like protrudes from the bottom surface of the hole 10. A sub-valve 14 of the ball valve type is mounted on the upper surface of the branch pipe 13, and the fire hydrant barrel 1 is installed on the sub-valve 14. And
Normally, the upper surface of the upright path 2 of the stopper 1 is in a state of being shielded by the cover plate 4. In the event of a fire, the hall cover 11 is opened, a fire hose is connected to the connection port 6, and the opening and closing mechanism 5 is opened.
Water is taken from the water pipe 12 or the like.

When a hydraulic inspection of the inside of the water pipe 12 is performed, first, the sub-valve 14 is closed to stop the water, the lid plate 4 is removed, and the measuring instrument 15 is set there. Next, the auxiliary valve 14
Is opened, and a detection rod (not shown) having a sensor at the tip is inserted from the measuring instrument 15 to the position of the water pipe 12. The sub-valve 14 is a ball valve type and has a hole in the center in the open state, and has a straight straight line from the measuring device 15 to the water pipe 12, so that there is no problem in inserting the detection rod. , Easy to do. Then, with the sensor at the tip of the detection rod reaching the inside of the water pipe, necessary hydraulic inspection measurements such as water pressure, flow rate, flow rate, and residual chlorine amount are performed. After the inspection,
Remove the measuring instrument in the reverse order.

FIG. 4 shows another embodiment in which a short pipe 16 for extension is connected to the upper surface of the upright path 2 to improve the workability at the time of setting by raising the setting position of the measuring instrument 15. It is a thing.

The present invention is not limited to the above embodiment, but can be freely modified and implemented within the scope of the claims. In particular, the detailed shape of the stopper cylinder 1 and the type of the opening / closing mechanism 5 are arbitrary. The fire hydrant of the present invention can be attached to a water tank in addition to a water pipe.

[0013]

According to the fire hydrant of the present invention, an upright path is formed in the body of the fire hydrant. Therefore, a measuring instrument is installed on the upper surface of the upright path during hydraulic inspection, and the detection rod is inserted into the water pipe through the upright path. Thus, various hydraulic tests in the pipe can be easily performed. In addition, at the time of the hydraulic inspection, there is no need to cut off the water pipe, which is extremely useful in practice. Further, since the fire hose connection port is attached to the end of the branch road via an opening / closing mechanism, the original function of the fire hydrant is not affected at all.

According to the second aspect of the present invention, since the extension short pipe is attached and the set position of the measuring instrument is increased, the installation of the measuring instrument is not hindered by the valve stem of the opening / closing mechanism.
Easy to work.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of a fire hydrant of the present invention.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a diagram showing a use state.

FIG. 4 is a cross-sectional view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug body 2 Upright path 3 Branch path 4 Cover plate 5 Opening / closing mechanism 6 Hose connection port 7 Connection port lid 8 Valve stem 9 Valve element 10 Fire hydrant installation hole 11 Hall lid 12 Water pipe 13 Upright branch path 14 Secondary valve 15 Measurement Vessel 16 Extension Short Tube

Claims (2)

[Claims] 1. A stopper body comprising: an upright path opening on both upper and lower surfaces;
A fire hydrant having a branch passage extending laterally from the upright road, wherein the branch passage communicates with the fire hose connection port through an opening / closing mechanism in the middle. 2. The fire hydrant according to claim 1, wherein an extension short pipe is connected to an upper surface of the upright path.