CN216645432U

CN216645432U - Integrated hydrology and water quality monitor

Info

Publication number: CN216645432U
Application number: CN202123070113.3U
Authority: CN
Inventors: 高峰; 张南; 徐浩然; 杨剑
Original assignee: Mingshi Innovation Industry Technology Research Institute Co ltd; Mingshi Innovation Yantai Micro Nano Sensor Technology Research Institute Co ltd
Current assignee: Mingshi Innovation Industry Technology Research Institute Co ltd; Mingshi Innovation Yantai Micro Nano Sensor Technology Research Institute Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-31
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to the technical field of hydrological state monitoring, in particular to an integrated hydrological water quality monitor, which comprises an upper cover component, a water level detection component and a water quality detection component which are connected in a sealing manner from top to bottom; the upper cover assembly comprises a cover body, and a signal processing circuit board is arranged at the bottom of the cover body; the water level detection assembly and the water quality detection assembly are in data interactive connection with the signal processing circuit board; the water level detection assembly is used for detecting water pressure; the signal processing circuit board is configured to convert the water pressure signal into a water level signal and a water flow velocity signal; the signal processing circuit board transmits signal data to the outside through the communication line. Therefore, the use of a high-cost radar/ultrasonic speed measuring device is avoided, the cost is reduced, and meanwhile, the use is convenient and fast.

Description

Integrated hydrology and water quality monitor

Technical Field

The utility model relates to the technical field of hydrological state monitoring, in particular to an integrated hydrological water quality monitor.

Background

The monitoring of the hydrological state in rivers generally includes the monitoring of water level and flow velocity, and the most common method at present is to use a radar/ultrasonic sensor-based device, install a corresponding sensor above the river surface through a pole, measure the water level by measuring the time difference of electromagnetic/ultrasonic wave transmission and reception, and measure the flow velocity by measuring the frequency difference/time difference of electromagnetic/ultrasonic waves in the forward and reverse flows. Other methods such as using a float-type sensor to measure water level using its displacement and using a turbine/runner to measure flow rate using its rotational speed have large errors.

Monitoring of the water quality state in rivers typically employs sensors based on spectroscopy/electrode methods to monitor the material conditions in the water. The water quality monitoring device is put into a river for monitoring. When the hydrology and the water quality of a river need to be monitored simultaneously in an application scene, two sets of independent devices which are respectively arranged on the river surface and in the river water are needed, so that the cost is increased, and inconvenience is brought.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides the integrated hydrological water quality monitor, which can reduce the cost and improve the measurement precision of the flow velocity of water flow.

In order to achieve the purpose, the utility model provides an integrated hydrological water quality monitor, which comprises an upper cover component, a water level detection component and a water quality detection component which are connected in a sealing manner from top to bottom; the upper cover assembly comprises a cover body, and a signal processing circuit board is arranged at the bottom of the cover body; the water level detection assembly and the water quality detection assembly are in data interactive connection with the signal processing circuit board; the water level detection assembly is used for detecting water pressure; the signal processing circuit board is configured to convert the water pressure signal into a water level signal and a water flow velocity signal; and the signal processing circuit board transmits signal data to the outside through a communication line.

Furthermore, the water level detection assembly comprises a cylinder body, a plurality of pressure detection hole groups are uniformly distributed in the cylinder body along the axis direction, and each pressure detection hole group comprises two pressure holes which are vertical to each other in the two directions and are positioned at the same height; the pressure hole is in threaded sealing connection with a pressure sensor; the pressure sensor is connected with the signal processing circuit board through a signal wire A; the cylinder body is connected with the cover body flange in a sealing mode.

Furthermore, the water quality detection assembly comprises a disc, and a plurality of water quality sensors with different detection functions are hermetically connected to the disc; the water quality sensors are connected with the signal processing circuit board through signal wires B; the disc is in threaded sealing connection with the cylinder body.

Furthermore, the signal processing circuit board is fixed at the bottom of the cover body through a connecting frame.

Further, the top of the cover body is also provided with a hanging ring.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the water level and the flow rate are measured by the pressure sensor, and the pressure sensor and the water quality sensor can be integrally designed, so that the use is convenient;

(2) one pressure sensor faces to the water flow, the other pressure sensor faces to the direction of the water flow, and the flow velocity in the hydrological parameters is measured by calculating the pressure difference, so that a high-cost radar/ultrasonic speed measuring device is avoided; meanwhile, the hydrostatic pressure measured by the pressure sensor in the lateral water flow direction can be calculated to obtain the water level height. Overall, the cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a diagram of the connection position of the pressure sensor of fig. 1.

Wherein: 1. an upper cover assembly; 2. a water level detection assembly; 3. a water quality detection assembly; 11. a cover body; 12. a connecting frame; 13. a signal processing circuit board; 14. a communication line; 15. a hoisting ring; 21. a pressure sensor; 22. a barrel; 31. a disc; 32. a water quality sensor; 221. and a pressure hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Examples

Referring to fig. 1 to 3, the present invention provides an integrated hydrographic water quality monitor, which comprises an upper cover assembly 1, a water level detection assembly 2 and a water quality detection assembly 3, which are hermetically connected from top to bottom; the upper cover assembly 1 comprises a cover body 11, and a signal processing circuit board 13 is arranged at the bottom of the cover body 11; the water level detection component 2 and the water quality detection component 3 are in data interactive connection with the signal processing circuit board 13; the water level detection assembly 2 is used for detecting water pressure; the signal processing circuit board 13 is configured to convert the water pressure signal into a water level and water flow rate signal; the signal processing circuit board 13 performs signal data transmission to the outside through the communication line 14.

As an embodiment of the present invention, the water level detecting assembly 2 includes a cylinder 22, a plurality of pressure detecting hole sets are uniformly distributed in the cylinder 22 along an axial direction, each pressure detecting hole set includes two pressure holes 221 perpendicular to each other and having the same height, that is, the directions of the two pressure holes 221 are perpendicular to each other; the pressure hole 221 is connected with a pressure sensor 21 in a threaded sealing manner; the pressure sensor 21 is connected with the signal processing circuit board 13 through a signal line A; the cylinder 22 is flange-tightly connected with the cover 11.

As an embodiment of the utility model, the water quality detection assembly 3 comprises a disc 31, wherein a plurality of water quality sensors 32 with different detection functions are hermetically connected on the disc 31; the water quality sensors 32 are connected with the signal processing circuit board 13 through signal lines B; the disc 31 is in threaded sealing connection with the cylinder 22.

As an embodiment of the present invention, the signal processing circuit board 13 is fixed to the bottom of the cover 11 by the connection frame 12.

As an embodiment of the present invention, a hanging ring 15 is further provided on the top of the cover body 11.

Since the present invention is entirely immersed in water, a sealing treatment is required at the communication line 14.

The principle of the utility model is as follows:

when measuring the hydrological parameters, as shown in fig. 3, one pressure sensor 21 on the pressure detection hole group faces the water flow direction, the other side faces the water flow direction, a plurality of pressure detection hole groups are arranged at different heights, and the pressure of water, namely the water pressure, is measured by the pressure sensor 21. The pressure sensor 21 facing the water flow direction is over against the impact of the water flow to measure the power potential energy of the water flow, and the pressure sensor 21 facing the water flow direction measures the hydrostatic pressure potential energy of the water flow at the point.

The bernoulli equation indicates that the sum of pressure potential energy, kinetic energy and gravitational potential energy of any two points on the fluid is equal to a constant in the flowing process of the fluid, namely the conservation of mechanical energy of the fluid. The expression is p + (rho multiplied by v ^2)/2+ rho multiplied by g multiplied by h ═ C, wherein p represents the pressure at a certain point in the fluid, rho represents the density of the fluid, v represents the flow velocity of the fluid, h represents the height of the fluid, g is the gravity acceleration, C represents a constant, and C is kept constant during the movement of the fluid. At equal height flows, the greater the flow rate, the lower the pressure.

The pressure sensors 21 which are arranged at the same height and face the water flow direction and the lateral water flow direction respectively measure the pressure P₁And P₂The pressure receiving area S of the pressure sensor 21 is converted into pressure P by P ═ P/S, and the pressure is converted into pressure P₁And p₂Since the pressure sensors 21 facing the water flow direction and the lateral water flow direction are distributed at 90 degrees, the pressure sensor 21 facing the lateral water flow direction is impacted by the water flow to be 0, which causes P₁Greater than P₂Corresponding to p₁Greater than p₂And the flow velocity v of water at the position of the pressure sensor 21 facing the direction of water flow₁0, flow velocity v of water at the position of the pressure sensor 21 in the lateral flow direction₂The water flow rate at that location. According to the formula: p is a radical of formula₁+(ρ×v₁^2)/2+ρ×g×h₁＝p₂+(ρ×v₂^2)/2+ρ×g×h₂，h₁＝h₂The pressure difference Δ p between the two pressure sensors 21 is p₁-p₂＝(ρ×v₂2)/2, so that the flow velocity v of the water flow facing to the water flow direction can be calculated₂，v₂＝(2×(P₁-P₂)/ρ)^1/2. Meanwhile, the error of the flow velocity v can be further reduced by setting a plurality of pressure detection hole groups at different heights and utilizing a mode of averaging by multiple measurements, so that the measurement precision of the flow velocity of the water flow is improved.

According to the pressure formula of the fluid, P is ρ × g × h, where P is the pressure of the fluid, ρ is the density of the fluid, g is the gravitational acceleration, h is the height of the fluid, and the pressure P measured by the pressure sensor 21 in the lateral water flow direction is measured₂The water level height can be calculated.

When the device is used, the device can be also arranged on a fixed rod driven by a stepping motor, the stepping motor is automatically controlled according to the measured pressure value to ensure that the whole device is immersed in water, and the current water depth can be estimated according to the position of the device calculated by the movement of the stepping motor and the water level measured by the pressure sensor 21.

In summary, the pressure sensor 21 and the water quality sensor 32 are both existing products, and are not described in detail. The water quality sensors 32 with different detection functions may be a combination of at least two of a turbidity sensor, a TOC sensor, a pH sensor, a residual chlorine sensor, a dissolved oxygen sensor, a conductivity sensor, and an ORP sensor.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the utility model are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims, and not by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The integrated hydrological water quality monitor is characterized by comprising an upper cover component (1), a water level detection component (2) and a water quality detection component (3) which are connected in a sealing manner from top to bottom; the upper cover assembly (1) comprises a cover body (11), and a signal processing circuit board (13) is arranged at the bottom of the cover body (11); the water level detection assembly (2) and the water quality detection assembly (3) are in data interactive connection with the signal processing circuit board (13); the water level detection assembly (2) is used for detecting water pressure; the signal processing circuit board (13) is configured to convert a water pressure signal into a water level and water flow velocity signal; the signal processing circuit board (13) transmits signal data to the outside through a communication line (14).

2. The integrated hydrographic water quality monitor according to claim 1, wherein the water level detection assembly (2) comprises a cylinder (22), a plurality of pressure detection hole groups are uniformly distributed in the cylinder (22) along the axial direction, and each pressure detection hole group comprises two pressure holes (221) which are perpendicular to each other in the two directions and are located at the same height; the pressure hole (221) is in threaded sealing connection with a pressure sensor (21); the pressure sensor (21) is connected with the signal processing circuit board (13) through a signal line A; the cylinder body (22) is connected with the cover body (11) in a flange sealing mode.

3. The integrated hydrological water quality monitor according to claim 2, wherein the water quality detection assembly (3) comprises a disc (31), and a plurality of water quality sensors (32) with different detection functions are hermetically connected to the disc (31); the water quality sensors (32) are connected with the signal processing circuit board (13) through signal wires B; the disc (31) is in threaded sealing connection with the cylinder body (22).

4. The integrated hydrological water quality monitor according to any one of claims 1 to 3, wherein the signal processing circuit board (13) is fixed at the bottom of the cover body (11) through a connecting frame (12).

5. The integrated hydrological water quality monitor according to claim 4, wherein a hanging ring (15) is further arranged at the top of the cover body (11).