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KR-20260063179-A - Water sherif where water quality measurements are made in a stationary state

KR20260063179AKR 20260063179 AKR20260063179 AKR 20260063179AKR-20260063179-A

Abstract

The present invention relates to a water sheriff that facilitates water quality measurement, and more specifically, to a water sheriff that facilitates water quality measurement in such a way that an inlet and an outlet are aligned with the direction of flow of a fluid having a constant flow velocity, and a flow velocity is reduced between the inlet and the outlet to prevent sensing errors in a sensor that measures the water quality of a liquid. The present invention is characterized by comprising: a main body pipe means through which fluid is transported and flanges are formed at both ends; and a measuring pipe member having an inlet and an outlet formed parallel to the direction of fluid transport, into which a portion of the fluid transported at a constant speed is introduced, and a flow velocity sensing part formed on the outer side of the main body pipe means between the inlet and the outlet to reduce the velocity of the fluid introduced from the inlet, and a sensor installation part provided in the flow velocity sensing part to install a sensor that measures water quality.

Inventors

  • 이주현
  • 권지환
  • 이수형

Assignees

  • 한국표준과학연구원

Dates

Publication Date
20260507
Application Date
20241030

Claims (6)

  1. Having a constant flow rate and a main body pipe means; A storage tank means parallel to the center of the above main body pipe means; A fluid inlet pipe that moves the fluid flowing through the above main body pipe means to a storage tank means; A fluid discharge pipe that measures the water quality of the fluid introduced into the above-mentioned storage tank means using a sensor and discharges the fluid of the storage tank means to the main body pipe means; A sensor installed in the above-mentioned storage tank means to measure water quality; A first valve means and a second valve means installed in the above fluid inlet pipe and fluid discharge pipe, which operate on/off when fluid is introduced and discharged; A water sheriff in which water quality measurement is performed in a stationary state, characterized by being composed of...
  2. In Article 1, A water sheriff in which water quality measurement is performed in a stationary state, characterized in that the cross-section of the above-mentioned storage tank means is either circular or rectangular.
  3. In Article 1, A water sheriff in which water quality measurement is performed in a stationary state, characterized in that the bottom of the above-mentioned storage tank means is formed to be inclined in one direction.
  4. In Article 1, A water sheriff for measuring water quality in a stationary state, characterized by further including a washing water supply connection between the first valve means of the fluid inlet pipe and the storage tank means, capable of washing the interior of the storage tank means.
  5. In water quality measurement methods, A water quality measurement method characterized by temporarily storing a portion of the fluid flowing through a main body pipe means having a constant diameter in a storage tank means, measuring the water quality using a sensor, and discharging the fluid stored in the storage tank means when the water quality measurement is completed.
  6. In Article 5, A water quality measurement method characterized by controlling the inflow and outflow of fluid to the storage tank means by turning on/off the first valve means and the second valve means, respectively installed on both sides of the storage tank means, via an electrical signal or manual operation.

Description

Water sherif where water quality measurements are made in a stationary state The present invention relates to a water sheriff in which water quality measurement is performed while stationary, and more specifically, to a water sheriff in which a portion of a fluid flowing through a main body pipe means with a constant flow rate is temporarily stored, water quality is measured using a sensor, and then discharged back into the main body pipe means, thereby providing convenience in water quality measurement and preventing the occurrence of sensing errors by preventing mixing with the existing fluid when the fluid changes, so that accurate and stable water quality measurement can be performed and accurate data can be obtained. Generally, a water transfer pipe (hereinafter referred to as "water transfer pipe") through which tap water, sewage, or various other types of water are transferred is equipped with a water quality measuring device that continuously measures the water quality of the water passing through the water transfer pipe. And a conventional water quality measuring device for a water transfer pipe is a device for measuring the water quality of water passing through a water transfer pipe. Accordingly, a conventional water quality measuring device for a water transfer pipe includes a water quality measuring sensor for obtaining measurement values for water quality measurement, such as pH (hydrogen ion concentration), BOD (biological oxygen demand), COD (chemical oxygen demand), MLSS (turbidity), DO (dissolved oxygen), MPN (coliform count), conductivity, etc. of water passing through the water transfer pipe. First, FIG. 1 is a cross-sectional view showing a water quality measuring device for a water transfer pipe according to a conventional embodiment. As shown in FIG. 1 of the attached drawings, the water quality measuring device for a water transfer pipe according to a conventional embodiment includes a vertical hole (101) that penetrates the circumference of a water transfer pipe (100), and a water quality measuring sensor (200) that is fixed through the inside of the vertical hole (101) and has a water quality sensing part (201) provided at the bottom so that the water quality sensing part (201) is submerged in the water passing through the water transfer pipe (100). However, the water quality measuring device for a water transfer pipe of a conventional embodiment configured as described above had a problem in which the water flow rate passing through the water transfer pipe (100) was fast, causing a sensing error in the water quality measuring sensor (200) and frequent errors in the water quality measurement value. In addition, the water quality measuring device for a water transfer pipe of a conventional embodiment had a problem in that, as a through hole was machined around the circumference of the water transfer pipe and a vertical pipe was fixed in the through hole by welding or fastening, when installing the water quality measuring device on an existing water transfer pipe (100), the water transfer pipe had to be machined, and thus, when installing the water quality measuring device on an existing water transfer pipe (100), a large installation cost was incurred. Considering these conventional problems, Korean Patent Registration No. 2364790, "Water quality measuring device for water transfer pipes," has been proposed. As shown in the attached drawing Fig. 2a, the above-mentioned patent registration No. 2364790 "Water quality measuring device for water transfer pipe" has a structure in which the water transfer pipe (100) is installed horizontally so that the fluid flows horizontally, whereas the ring-shaped measuring pipe (400) has an inlet (401) and an outlet (402) formed so that their centers intersect vertically with respect to the water transfer pipe (100), and a water quality measuring sensor (200) is installed in the fluid deceleration section (420) connected thereto. As shown in the attached drawing Fig. 2, the fluid flowing through the water transfer pipe (100) must be partially moved into the ring-shaped measuring pipe (400), but since the inlet (401) is installed vertically, the fluid collides with the front part of the inlet (401) connected perpendicular to the direction of flow, and turbulence is generated at the collided part, causing noise, and furthermore, the inflow of fluid is obstructed, so the fluid cannot flow into the ring-shaped measuring pipe (400), which is a problem. In addition, there is a problem where fluid does not flow into the aforementioned ring-shaped measuring tube (400), resulting in a space that is not filled with fluid, and a problem where the reliability of the sensor is reduced due to a high error rate in sensor measurement. Figure 1 is an example diagram showing a method for measuring water quality for a water transfer pipe using a general turbidity sensor. FIG. 2 is a cross-sectional view showing the structure of a conventional water quality measuring d