JPH0630768U - Water quality measuring device - Google Patents

Abstract

(57) [Summary] [Purpose] The residual chlorine concentration in the existing water pipes is automatically measured at each site, and water is sampled and measured using the existing pipelines without any special large-scale construction. [Structure] Insert pipe 8A for sampling water in pipeline 1 provided in fire hydrant 5 installed in the middle of existing pipeline 1 and having sampling port 8B protruding to the central portion of existing pipeline 1
And a residual chlorine sensor 10 that communicates with this insertion pipe 8A to detect the value of residual chlorine in the test water, and receives the measurement data from the residual chlorine sensor 10 and converts this measurement data into a signal as necessary. And a measuring device 12 for storing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water quality measuring device for measuring, for example, residual chlorine concentration in a pipeline of waterworks.

[0002]

[Prior art]

 Conventionally, when measuring the residual chlorine concentration in an existing pipeline of water supply, the test water collected at the survey point was taken home and measured with an automatic measuring device, or manually on site. Therefore, there was no system for measuring residual chlorine concentration by directly sampling water from existing pipelines.

[0003]

[Problems to be solved by the device]

 However, since the water pipes in the urban area are buried in a mesh shape, it is necessary to collect the test water at multiple points in the conventional water quality measurement described above. In addition, it was inconvenient because the measurement results could not be obtained on the spot.

In addition, there is a problem that it takes time to perform manual measurement at the site, and an error is likely to occur in the measurement result due to individual difference of the manufacturer. The present invention has been made to solve the above-mentioned problems, and it is possible to automatically measure the residual chlorine concentration in an existing water pipe on-site, and to collect water in the existing pipeline state. , It is intended to provide a water quality measuring device capable of measuring.

[0005]

[Means for Solving the Problems]

 The water quality measuring device of the present invention is provided in a valve device such as a fire hydrant or an air valve installed in the middle of an existing pipeline, and an insertion pipe with a sampling port protruding to the center of the existing pipeline, and this insertion pipe. A residual chlorine sensor that communicates with the pipe to detect the value of residual chlorine in the test water, and a measuring instrument that receives the measurement data signal from the residual chlorine sensor and converts this measurement data to a physical quantity or stores it as necessary. I have it.

[0006]

[Action]

 Since the present invention is provided with an insertion pipe for sampling water in a valve device such as a fire hydrant or an air valve installed in the middle of an existing pipeline as in the above configuration, the valve device such as the existing fire hydrant or air valve is provided. Can be used as is. Moreover, since the sampling port of the insertion pipe is located in the center of the existing pipeline, it is possible to always collect water in the center of the pipeline, and to collect water flowing on the pipe wall side. The residual chlorine can be measured more accurately than in the case of.

[0007]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is an overall configuration diagram of the water quality measuring device of the present invention, in which 1 is an existing pipeline such as waterworks buried in the ground, and a fire hydrant box 2 is provided in the middle of the existing pipeline 1. Is provided. 3 is a lid of the fire hydrant box on the ground surface.

Inside the fire hydrant box 2, a single-ended fire hydrant 5 is divergently provided from the existing pipeline 1 via a sub valve 4. The fire hydrant 5 is provided with a ball valve 6 on the upper portion thereof, and has a fire hydrant cap 7 into which a fire hose or the like is fitted at the tip of the ball valve 6. An insertion pipe 8A is further provided in the fire hydrant 5 through an insertion jig 8 so as to penetrate the fire hydrant 5 and the sub valve 4. The sampling port 8B on the tip end side of the insertion pipe 8A projects into the central portion of the existing pipeline 1 so that water flowing through the central portion of the existing pipeline 1 can be sampled.

One end of the inflow conduit 9 is connected to the rear end of the insertion pipe 8 A, and the other end of the inflow conduit 9 is connected to the residual chlorine sensor 10. The residual chlorine sensor 10 is provided with a chlorine measuring sensor unit (not shown), and this chlorine measuring sensor unit generates a voltage output by the sample water flowing from the inflow conduit 9.

The chlorine measuring sensor unit is connected to the measuring device 12 via a signal line 11. The measuring device 12 is a device that converts a measurement signal (voltage output) from the chlorine measuring sensor unit into an appropriate physical quantity and stores it in an IC card (not shown) or the like.

Next, the operation of the above configuration will be described. First, the water flowing through the existing pipeline 1 flows in from the sampling port 8B of the insertion pipe 8A. Since this sampling port 8B is located in the central part of the existing pipeline 1, it is possible to always collect water in the central part of the pipeline 1, and in the case of collecting water flowing on the pipe wall side. In comparison, residual chlorine can be accurately measured.

The water flowing in from the sampling port 8B is introduced into the residual chlorine sensor 10 through the insertion pipe 8A and the inflow conduit 9. A voltage output corresponding to the value of residual chlorine is generated at the chlorine measuring sensor inside the residual chlorine sensor 10. The obtained voltage output is sent to the measuring device 12 via the signal line 11, the voltage output is converted into an appropriate signal, and the signal is stored in an IC card or the like. The test water in which the residual chlorine was measured flows out from the outflow conduit 13.

In addition, when automatically measuring the residual chlorine in the water supply, the measurement interval, the measurement start time, and the like are specified in the measuring device 12. The data stored in the IC card is processed by the computer once every several days after the IC card is taken out from the measuring instrument 12.

Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is a water quality measuring device using an air valve, in which an air valve 23 is provided in the middle of an existing pipeline 21 via a sluice valve 22, and the sluice valve 22 and the air valve 23 are connected to each other. An insertion pipe 24 is provided therethrough. The sampling port 24A on the tip end side of the insertion pipe 24 also projects to the center of the existing pipeline 21. One end of the inflow conduit 25 is connected to the rear end of the insertion pipe 24, and the other end of the inflow conduit 25 is connected to the residual chlorine sensor 26. The residual chlorine sensor 26 and the measuring instrument 27 are the same as those in the first embodiment.

The operation of the water quality measuring device in the second embodiment is also similar to that of the first embodiment, and the water flowing through the central portion of the existing pipeline 21 flows in from the sampling port 24A and is inserted. It flows into the residual chlorine sensor 26 via a pipe 24 and an inflow conduit 25. A voltage output corresponding to the residual chlorine contained in the water is generated in the chlorine measuring sensor portion of the residual chlorine sensor 26, and this voltage output is sent to the measuring instrument 27 via the signal line 28. The measuring device 27 converts the voltage output into an appropriate signal, stores it in an IC card or the like, and processes it by a computer.

[0016]

[Effect of device]

 The water quality measuring device of the present invention can directly measure the residual chlorine concentration in the existing pipeline, and can collect the water in the central part of the existing pipeline, so that the residual chlorine can be accurately measured. it can. Moreover, since existing valve devices such as fire hydrants and air valves can be used without any special work, installation work is simple and costs are low.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a water quality measuring device showing a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a water quality measuring device showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Existing pipeline 5 Fire hydrant 8A Insert pipe 8B Sampling port 10 Residual chlorine sensor 12 Measuring instrument 21 Existing pipeline 23 Air valve 24 Inserting pipe 24A Sampling port 26 Residual chlorine sensor 27 Measuring instrument

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G01N 27/416 // G01N 1/20 B 7519-2J

Claims (1)

[Scope of utility model registration request] 1. An insertion pipe provided in a valve device such as a fire hydrant or an air valve installed in the middle of an existing pipeline and having a sampling port protruding to a central portion of the existing pipeline, and communicating with the insertion pipe. Equipped with a residual chlorine sensor that detects the value of residual chlorine in the test water, and a measuring instrument that receives the measurement data signal from the residual chlorine sensor and converts this measurement data to a physical quantity or stores it as necessary. Characteristic water quality measuring device.