CN-121993196-A - Groundwater monitoring device based on controllable disturbance well flushing and automatic water quality judgment

CN121993196ACN 121993196 ACN121993196 ACN 121993196ACN-121993196-A

Abstract

The invention relates to the technical field of underground water monitoring devices, in particular to an underground water monitoring device based on controllable disturbance well flushing and automatic water quality judgment. The device comprises a water sample monitoring module, a lifting module, a detection module and a control module, wherein the water sample monitoring module is connected with a waterproof cabin and is composed of an integrated monitoring component and a sampling component and used for collecting and analyzing characteristic parameters of well water, the lifting module is arranged above the water sample monitoring module and used for washing a well, the detection module is used for acquiring lifting speed of a pump body, well water temperature and air pressure in the well in real time, the control module dynamically adjusts well washing frequency according to the lifting speed, optimizes running speed of a submersible pump and predicts tripod vibration intensity according to the change amount of the lifting speed, and combines the vibration intensity and the air pressure in the well to determine silt removing speed, so that intelligent well washing and accurate water quality monitoring are realized, and the device can improve accuracy and representativeness of data and monitoring efficiency and automation level.

Inventors

NIU XUEYAO
LI XIA
Wang Jiangyulong
SONG JIAXIN
SUN WEITAO
GUAN YUNAN
LI JIANNAN
LI XIANGQIAN

Assignees

中国地质调查局廊坊自然资源综合调查中心

Dates

Publication Date: 20260508
Application Date: 20260211

Claims (10)

1. Groundwater monitoring device based on controllable disturbance well flushing and automatic judgement of quality of water, characterized in that includes: A waterproof cabin; the water sample monitoring module is connected with the waterproof cabin and used for sampling and monitoring well water, and comprises an integrated monitoring assembly used for monitoring water sample characteristic parameters of the well water and a sampling assembly connected with the integrated monitoring assembly and used for sampling the well water; Wherein the sampling assembly comprises a sampling pump arranged in the waterproof cabin; The lifting module is partially arranged above the water sample monitoring module and used for flushing a well, and comprises a submersible pump, a tripod, a winch and a self-adaptive centralizer, wherein the submersible pump is connected with the waterproof cabin and used for controllably disturbing well water, the winch is connected with the tripod and used for changing the vertical position of the submersible pump in the well, and the self-adaptive centralizer is connected with the waterproof cabin; the detection module is connected with the lifting module and is used for respectively detecting the lifting speed of the waterproof cabin, the actual temperature of well water in the well flushing process and the air pressure in the well; The control module is respectively connected with the water sample monitoring module, the lifting module and the detection module, and is used for determining the well flushing frequency according to the actual temperature of well water in the well flushing process, redefining the well flushing frequency according to the variation of the actual lifting speed of the submersible pump, calculating the predicted vibration intensity of the tripod according to the variation of the actual lifting speed of the submersible pump, and determining the silt removing speed according to the predicted vibration intensity of the tripod and the air pressure in the well.
2. The groundwater monitoring device based on controllable disturbance well flushing and automatic water quality judgment according to claim 1, wherein the detection module comprises: An acceleration sensor connected to the submersible pump for detecting an actual rising speed of the submersible pump; the temperature sensor is arranged on the outer wall of the waterproof cabin and is used for detecting the actual temperature of well water; And the air pressure sensor is arranged on the inner wall of the well and is used for detecting the air pressure in the well.
3. The underground water monitoring device based on controllable disturbance well flushing and automatic water quality judgment according to claim 2, wherein the control module is respectively connected with the temperature sensor and the winch, and is used for judging that the silt adsorption risk of the well wall is not in accordance with the requirement according to the fact that the actual well water temperature in the well flushing process is greater than the preset temperature, and controlling the winch to reduce the well flushing frequency; Wherein the well flushing frequency is inversely related to the actual temperature of the well water in the well flushing process.
4. The underground water monitoring device based on the controllable disturbance well flushing and the automatic water quality judgment according to claim 3, wherein the control module is respectively connected with the acceleration sensor and the winch, and is used for increasing the well flushing frequency according to the fact that the variation of the actual rising speed of the submersible pump is smaller than or equal to the preset variation.
5. The groundwater monitoring device based on automatic identification of water quality and well flushing with controllable disturbance according to claim 4, wherein the increased well frequency is inversely related to the actual rise rate variation of the submersible pump.
6. The groundwater monitoring device based on automatic identification of water quality and well flushing with controllable disturbance according to claim 5, wherein the variation of the actual rising speed of the submersible pump is a difference between the actual rising speed at the beginning of the monitoring period and the actual rising speed at the end of the monitoring period.
7. The underground water monitoring device based on the controllable disturbance well flushing and automatic water quality judgment according to claim 6, wherein the control module is connected with the lifting module and is used for judging that the interference degree of external dust on well water does not meet the requirement and reducing the silt removing speed according to the fact that the predicted vibration intensity of the tripod is larger than the preset vibration intensity and the air pressure in the well is smaller than the preset air pressure.
8. The groundwater monitoring device based on automatic identification of water quality and well flushing with controllable disturbance according to claim 7, wherein the silt removal speed is inversely related to the air pressure in the well.
9. The groundwater monitoring device based on the automatic identification of the water quality and the well flushing with controllable disturbance according to claim 8, wherein the predicted vibration intensity of the tripod is a product of a change amount of an actual rising speed of the submersible pump and a conversion coefficient.
10. The groundwater monitoring device based on the automatic identification of the water quality and the well flushing with controllable disturbance according to claim 9, wherein the conversion coefficient is the increased vibration intensity of the tripod corresponding to the unit change amount of the actual rising speed of the submersible pump.

Description

Groundwater monitoring device based on controllable disturbance well flushing and automatic water quality judgment Technical Field The invention relates to the technical field of underground water monitoring, in particular to an underground water monitoring device based on controllable disturbance well flushing and automatic water quality judgment. Background In the prior art, aiming at flushing and sampling of a deep groundwater monitoring well, the industry relies on a traditional means of a belleville pipe for a long time. However, this method is labor intensive, time consuming and tedious, extremely inefficient, and difficult to effectively address the operational needs of deep wells. The existing improved device tries to wash a well in a fixed flow or intermittent surging mode, but the problem of separate design of a well washing unit and a monitoring unit is still common, and control logics of the two units are independent and lack of cooperative optimization. The device needs manual intervention to switch to a monitoring mode after well flushing is finished, is complex in operation, and cannot realize closed loop feedback control of 'well flushing, monitoring and judging'. The patent publication No. CN104818984A discloses a modularized underground water monitoring well flushing and sampling device, which comprises a miniature water pump module, a pipeline module and a diversion module, wherein the miniature water pump module, the pipeline module and the diversion module are connected through threads, the diversion module is arranged at the tail end of the device, the miniature water pump module comprises a miniature water pump, a controller and a liquid sensor, the controller and the liquid sensor are arranged in the miniature water pump, the liquid sensor sends detected liquid signals into the controller to be converted into electric signals, and the controller starts the miniature water pump to work, so that the modularized underground water monitoring well flushing and sampling device has the problems that the adsorption capacity of silt of a well wall is enhanced due to the rise of the well water temperature in the well flushing process, and the accuracy of well water sampling is reduced due to the fact that dust generated by a tripod is easily sucked into the well after the silt is adsorbed by a waterproof cabin. Disclosure of Invention Therefore, the invention provides a groundwater monitoring device based on controllable disturbance well flushing and automatic water quality judgment, which is used for solving the problems that in the prior art, the silt adsorption capacity of a well wall is enhanced due to the rise of the well water temperature in the well flushing process, and the accuracy of well water sampling is reduced due to the fact that dust generated by a tripod is easily sucked into the well after the waterproof cabin adsorbs silt. In order to achieve the above object, the present invention provides a groundwater monitoring device based on controllable disturbance well flushing and automatic water quality judgment, comprising: A waterproof cabin; the water sample monitoring module is connected with the waterproof cabin and used for sampling and monitoring well water, and comprises an integrated monitoring assembly used for monitoring water sample characteristic parameters of the well water and a sampling assembly connected with the integrated monitoring assembly and used for sampling the well water; Wherein the sampling assembly comprises a sampling pump arranged in the waterproof cabin; The lifting module is partially arranged above the water sample monitoring module and used for flushing a well, and comprises a submersible pump, a tripod and a winch, wherein the submersible pump is connected with the waterproof cabin and used for controllably disturbing well water, and the winch is connected with the tripod and used for changing the vertical position of the submersible pump in the well; The detection module is connected with the lifting module and is used for respectively detecting the lifting speed of the waterproof cabin, the actual temperature of well water in the well flushing process and the air pressure in the well; The control module is respectively connected with the water sample monitoring module, the lifting module and the detection module, and is used for determining well flushing frequency according to the actual well water temperature in the well flushing process, calculating the predicted vibration intensity of the tripod according to the actual rising speed variation of the submersible pump, and determining the silt removing speed according to the predicted vibration intensity of the tripod and the air pressure in the well. Further, the detection module includes: An acceleration sensor connected to the submersible pump for detecting an actual rising speed of the submersible pump; the temperature sensor is arranged on the outer wall of the waterproof cabin and is used