CN116718427B - Automatic underground water body collecting device and system - Google Patents
Automatic underground water body collecting device and system Download PDFInfo
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- CN116718427B CN116718427B CN202311001145.9A CN202311001145A CN116718427B CN 116718427 B CN116718427 B CN 116718427B CN 202311001145 A CN202311001145 A CN 202311001145A CN 116718427 B CN116718427 B CN 116718427B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The invention provides an automatic underground water body acquisition device and system, which relate to the technical field of underground water acquisition and comprise the following components: the water sample collecting device comprises a control cabin, a water sample collecting cabin, a sensor cabin and a plurality of telescopic supporting rods; the top of each telescopic supporting rod is provided with a roller. The bottom end of each telescopic supporting rod is connected with a control cabin, and the control cabin, the water sample collection cabin and the sensor cabin are sequentially connected; a control circuit and a battery are arranged in the control cabin; a piston water pump is arranged in the water sample collection cabin; the pressure-proof water level sensor is arranged in the sensor cabin. Based on the roller and the pressure-proof water level sensor, the device can be independently and flexibly positioned to the underground water body with the preset depth; the water sample is collected by controlling the drawing of the piston in the piston water pump, so that the power consumption requirement of equipment is reduced, and the volume and the weight of the device are reduced. After the sampling is finished, the device is driven to automatically climb up to the wellhead through the reverse rotation of the roller, and compared with a mode of manually winding and unwinding by equipment, the working efficiency of the sampling is greatly improved.
Description
Technical Field
The invention relates to the technical field of underground water collection, in particular to an automatic underground water body collection device and an automatic underground water body collection system.
Background
The underground water plays an extremely important role in guaranteeing the drinking safety of people, promoting the economic and social development, maintaining ecological balance and the like. Therefore, the sampling analysis of groundwater is particularly important. In the prior art, a groundwater sampling pump is commonly used for realizing the collection of groundwater, a sampling pump body is put into water, the sampling pump body is connected with a controller of a wellhead through a cable and a conduit, the cable plays a role in providing power, and the conduit is used for conveying groundwater extracted by the pump body into a sample bottle of the wellhead.
To be able to use in deeper monitoring wells, the cables and conduits will be correspondingly increased in length, which results in the cables and conduits taking up a significant portion of the volume and mass of the equipment. In addition, because the power consumption of the water pump is higher in the water pumping process, the power supply needs to adopt alternating current or mobile power supply, the alternating current has great potential safety hazard in the field, the mobile power supply is a large-capacity accumulator jar, the weight is great, and inconvenience is caused in the use process. In addition, when utilizing above-mentioned device to sample groundwater, still need the manual positioning sampling pump body's sampling depth, the process is loaded down with trivial details, and sampling efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic underground water body acquisition device and an automatic underground water body acquisition system, so that the working intelligentization degree of the whole device is improved, the power consumption requirement of equipment is reduced, the volume and the weight of the device are reduced, and the sampling working efficiency is improved.
In a first aspect, the present invention provides an automatic underground water body collection device, comprising: the water sample collecting device comprises a control cabin, a water sample collecting cabin, a sensor cabin and a plurality of telescopic supporting rods; the top end of each telescopic supporting rod is provided with a roller; the bottom end of each telescopic supporting rod is connected with the control cabin, and the control cabin, the water sample collection cabin and the sensor cabin are sequentially connected; a control circuit and a battery are arranged in the control cabin; a piston water pump is arranged in the water sample collection cabin; a pressure-proof water level sensor is arranged in the sensor cabin; after the starting work is determined, the control circuit controls all the telescopic support rods to be in an extending state, and simultaneously controls the rollers to rotate from outside to inside so that the underground water body automatic acquisition device moves downwards along the well pipe wall; the pressure-insulation type water level sensor is used for measuring the water inlet depth of the underground water body automatic acquisition device and sending the water inlet depth value to the control circuit; the control circuit controls the roller to stop rotating under the condition that the water depth value reaches the preset depth, so that the underground water body automatic acquisition device is positioned at the preset depth; and controlling the piston of the piston water pump to be pulled up so that the underground water sample enters the piston water pump; after the water sample collection is completed, the control circuit controls the roller to rotate from inside to outside, so that the underground water body automatic collection device moves upwards along the well pipe wall until reaching a wellhead.
In an alternative embodiment, the piston pump comprises: the device comprises a roller, a cross rod, a drawing belt, a top cover, a collecting bottle body and a piston; one end of the drawing belt penetrates through the top cover to be connected with the piston, the piston is positioned at the bottom of the collecting bottle body in a default state, and a water inlet hole is formed in the bottom of the collecting bottle body; the other end of the drawing belt is connected with the cross rod, the cross rod is connected with the rolling shaft, and the rolling shaft is connected with the control circuit; when the underground water body is sampled, the control circuit controls the rolling shafts to roll so as to drive the cross rods to rotate, and then the drawing belt is driven to wind automatically so as to pull up the piston, so that the underground water sample enters the collecting bottle body through the water inlet hole.
In an alternative embodiment, the automatic underground water body collecting device further comprises: the buoyancy cabin is internally provided with an empty cabin; the buoyancy cabin is connected with the sensor cabin; under the condition that the underground water body automatic acquisition device does not work, the buoyancy cabin is used for suspending the underground water body automatic acquisition device on the water surface by means of buoyancy.
In an alternative embodiment, the automatic underground water body collecting device further comprises: the magnetic trigger switches are arranged at the bottom ends of all the telescopic support rods and are connected with the control circuit; under the condition that the magnetic trigger switch is contacted with an external magnetic object under the attraction of magnetic force, the magnetic trigger switch sends a trigger instruction to the control circuit; the control circuit controls all the telescopic support rods to be in a contracted state based on the trigger instruction, and simultaneously controls the underground water body automatic acquisition device to stop working.
In an alternative embodiment, if the control circuit does not control the piston of the piston pump to pull up after the automatic underground water body collecting device moves downwards along the well pipe wall for a preset period of time, or the control circuit does not control the roller to rotate from inside to outside after the water sample collection is completed for a preset period of time, the control circuit performs an initialization operation so that all the telescopic support rods are in a contracted state, and the automatic underground water body collecting device is suspended on the water surface under the action of the buoyancy cabin; under the condition that the automatic underground water body collecting device is suspended on the water surface, the control circuit controls all the telescopic supporting rods to be in an extending state, and simultaneously controls the rollers to rotate from inside to outside, so that the automatic underground water body collecting device moves upwards along the well pipe wall until reaching a wellhead.
In an alternative embodiment, an audible and visual alarm device is arranged on the control cabin shell; the audible and visual alarm device is connected with the control circuit; under the condition that the underground water body automatic acquisition device is determined to suspend on the water surface, the control circuit controls the audible and visual alarm device to send an alarm command; and the audible and visual alarm device is used for performing audible and visual alarm according to the alarm instruction.
In an alternative embodiment, a pipeline type liquid level sensor is arranged on the outer wall of the acquisition bottle body; the pipeline type liquid level sensor is connected with the control circuit and is used for sending an induction instruction to the control circuit under the condition that the water quality sample exists in the collecting bottle body is determined, so that the control circuit determines that water sample collection starts.
In an alternative embodiment, a multiparameter water quality sensor is further arranged in the sensor cabin, and the sensor cabin is of a porous or multi-gap structure.
In an alternative embodiment, the control pod comprises: battery compartment and circuit compartment; the battery is placed in the battery compartment, and the control circuit is placed in the circuit compartment.
In a second aspect, the present invention provides an automatic groundwater environment collection system, including an automatic groundwater body collection device according to any one of the foregoing embodiments, further including: an upper computer; the upper computer is connected with the automatic underground water body acquisition device and is used for sending a control instruction to the automatic underground water body acquisition device; wherein the control instruction comprises the preset depth; the automatic underground water body acquisition device is used for automatically acquiring the water quality of the underground water environment based on the control instruction.
According to the underground water body automatic acquisition device, the built-in control circuit can automatically and flexibly position the device to the underground water body with the preset depth through the roller and the pressure-insulation type water level sensor, the manual positioning of the sampling depth is not needed, and the working intelligentization degree of the whole device is improved. In addition, the device collects water samples through the control circuit controlling the drawing action of the piston in the piston water pump, replaces the water quality sampling work through the sampling pump, the cable and the guide pipe, reduces the equipment power consumption requirement, reduces the volume and the weight of the device, and reduces the risk of water sample exposure pollution. After the sampling is finished, the control circuit drives the underground water body automatic acquisition device to automatically climb to the wellhead position through controlling the reverse rotation of the roller, and compared with the equipment recovery mode of manual wire collection, the working efficiency of sampling is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an automatic underground water body collection device according to an embodiment of the present invention;
fig. 2 (a) is a top view of an extended state of a telescopic support rod according to an embodiment of the present invention;
fig. 2 (b) is a top view of a contracted state of the telescopic support rod according to the embodiment of the present invention;
FIG. 3 (a) is a schematic view of a state of an automatic underground water body collecting device in a well pipe according to an embodiment of the present invention;
FIG. 3 (b) is a schematic diagram of a state of an automatic underground water body collecting device at a wellhead according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a piston pump according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of another automatic underground water body collecting device according to an embodiment of the present invention;
FIG. 6 is a schematic view of another alternative automatic underground water body collection device according to an embodiment of the present invention;
FIG. 7 (a) is a schematic diagram of a proximity magnetic trigger switch of a recycler according to an embodiment of the invention;
fig. 7 (b) is a schematic diagram of the automatic collecting device for salvaging the underground water body after the recoverer provided by the embodiment of the invention contacts with the magnetic trigger switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
The product that uses in the present market has groundwater sampling pump to realize the collection to groundwater, and the equipment front end is the sampling pump body, puts into the aquatic with the sampling pump body, is connected with the controller of well head through cable and pipe, and the cable plays the effect that provides the power, and the pipe can be with groundwater extraction to the sample bottle of well head in. The existing underground water sampling equipment has the defects of multiple accessories, large volume and inconvenient carrying. The sampling pump body requires a cable and a conduit to be connected to the wellhead and a spool to wind the cable and conduit. To meet the requirements for use in deeper monitoring wells, the cables and conduits are correspondingly increased in length, so that the cables and conduits occupy a significant portion of the volume and mass of the equipment. Causing inconvenience in use.
Because the power consumption of the water pump is higher in the water pumping process, the power supply for supplying power generally adopts alternating current or a mobile power supply, and the alternating current is not limited in a plurality of places in the field, so that the environment where water is wet everywhere has great potential safety hazard in the use process. The mobile power supply is a large-capacity accumulator jar, and has large weight and inconvenient carrying. And the noise of the water pump is larger in the water pumping process. In addition, when utilizing above-mentioned device to sample groundwater, need the manual positioning sampling pump body's sampling depth, the process is loaded down with trivial details, and sampling efficiency is low. In view of the above, the embodiment of the invention provides an automatic underground water body collecting device for alleviating the technical problems involved in the above.
Example 1
Fig. 1 is a schematic structural diagram of an automatic underground water body collecting device according to an embodiment of the present invention, as shown in fig. 1, the device includes: the water sample collecting device comprises a control cabin, a water sample collecting cabin, a sensor cabin and a plurality of telescopic supporting rods; the top of each telescopic supporting rod is provided with a roller.
The bottom end of each telescopic supporting rod is connected with a control cabin, and the control cabin, the water sample collection cabin and the sensor cabin are sequentially connected; a control circuit and a battery are arranged in the control cabin; a piston water pump is arranged in the water sample collection cabin; the pressure-proof water level sensor is arranged in the sensor cabin.
After the start of work is confirmed, the control circuit controls all the telescopic supporting rods to be in an extending state, and meanwhile, the control rollers rotate from outside to inside, so that the underground water body automatic acquisition device moves downwards along the well pipe wall.
The pressure-insulation type water level sensor is used for measuring the water inlet depth of the automatic underground water body acquisition device and sending the water inlet depth value to the control circuit.
The control circuit controls the roller to stop rotating under the condition that the water depth value reaches the preset depth, so that the underground water body automatic acquisition device is positioned at the preset depth; and controlling the piston of the piston water pump to be pulled up so that the underground water sample enters the piston water pump.
After the water sample is collected, the control circuit controls the roller to rotate from inside to outside so that the underground water body automatic collection device moves upwards along the well pipe wall until reaching the wellhead.
Based on the above description of the structure of the automatic underground water body collecting device provided by the embodiment of the invention, the device mainly comprises a control cabin, a water sample collecting cabin, a sensor cabin and a plurality of telescopic supporting rods, and the top end of each telescopic supporting rod is provided with a roller. The roller plays a role in supporting the collecting device to roll up and down in the well pipe, and if the roller is controlled to rotate from outside to inside, the device moves downwards in the well pipe; if the control roller is rotated from inside to outside, the device is moved upwards in the well pipe. The device can move up and down in the well pipe by controlling different rotation directions of the roller, so that the device can automatically reciprocate.
The embodiment of the invention does not limit the number of the telescopic supporting rods specifically, and a user can set the telescopic supporting rods according to actual requirements. Optionally, the device top sets up four flexible bracing pieces, and four gyro wheels are connected to four flexible bracing pieces, and flexible bracing piece is movable mechanical arm structure, can be in shrinkage state or extension state according to the behavior of device. Fig. 2 (a) is a top view of an extended state of a telescopic support rod according to an embodiment of the present invention, and fig. 2 (b) is a top view of a contracted state of the telescopic support rod according to an embodiment of the present invention. The telescopic support rod is in a contracted state when not in operation, and the diameter of the device is smaller than that of a well pipe of the monitoring well, so that the device can be placed into the monitoring well. After the start of work is confirmed, the telescopic supporting rod is in an extending state, the four rollers extend to the periphery, the inner wall of the monitoring well pipe can be touched, certain pressure is applied, the device is subjected to certain friction force, the whole device can be fixed at a certain position of the well pipe, and the whole device is prevented from moving up and down.
The control cabin is internally provided with a battery for providing power for the normal operation of the whole device and a control circuit for controlling the operation of the device. The piston water pump can be fixedly arranged in the water sample collection cabin, underground water is collected through the piston water pump, and after the piston of the piston water pump pumps, the underground water can enter the piston water pump through the water inlet hole.
In order to enable the device to have the function of automatically collecting water samples at a specified depth, a sensor cabin is arranged on the device, a pressure-insulation type water level sensor is arranged in the cabin, and the water inlet depth of the device can be monitored through the pressure-insulation type water level sensor. Specifically, because the atmospheric pressure of the environment where the monitoring well is located can be kept unchanged in a short time, before entering water, the device is kept in the atmospheric environment on the water surface, the atmospheric pressure value of the environment where the monitoring well is located is measured by the sensor first, the value is stored, and at the moment, the water level is zero after the atmospheric pressure is eliminated because the pressure sensor is not contacted with the water surface. When the device enters the water body, the pressure of the water is received, and the stored atmospheric pressure is subtracted from the pressure detected by the sensor at the moment, so that the water level pressure can be obtained, and the water entering depth of the device is determined through a conversion formula of the pressure and the depth.
Based on the above description of the functions of the components of the device, after the preset depth to be sampled is preset in the device by a worker, the device can automatically sample the underground water body at the preset depth. Specifically, firstly, the device is placed in a monitoring wellhead, the control circuit controls all telescopic supporting rods to be in an extending state, all rollers are pressed on the wall of a well pipe, the device can be fixed in the well pipe, and after the device is determined to start working, the control circuit controls all rollers to rotate from outside to inside, so that the device moves downwards along the monitoring well pipe.
When the pressure-proof water level sensor enters the water body, the pressure of the water can be sensed, and the pressure of the sensor is larger and larger along with the downward movement of the device. When the depth of water entering converted by the pressure value reaches the preset depth set by the staff, the control circuit controls all the rollers to stop rotating, and the device is positioned at the preset depth to stop. At this moment, the underground water sample collection work can be started, and the control circuit controls the piston of the piston water pump to be pulled up, so that the underground water sample enters the piston water pump, and in general, the water pump starts to time at the beginning of water pumping, and after a specified time period or when the piston cannot be pulled up continuously, the underground water sample collection can be considered to be completed.
Then the collection device enters a return mode, the control circuit controls the roller to start to rotate reversely (rotate from inside to outside), and the device moves upwards along the inner wall of the well pipe until the device reaches the wellhead position. After the well head is reached, the roller does not feel the resistance and the pressure of the surrounding well wall any more, the telescopic support rods are outwards opened and extend to the maximum, the diameter of the stretched support rods exceeds the diameter of the well head of the well pipe, the support rods are hung and clamped at the well head, fig. 3 (a) is a schematic diagram of the state of the automatic underground water body collecting device in the well pipe, provided by the embodiment of the invention, and fig. 3 (b) is a schematic diagram of the state of the automatic underground water body collecting device at the well head.
According to the underground water body automatic acquisition device, the built-in control circuit can automatically and flexibly position the device to the underground water body with the preset depth through the roller and the pressure-insulation type water level sensor, the manual positioning of the sampling depth is not needed, and the working intelligentization degree of the whole device is improved. In addition, the device collects water samples through the control circuit controlling the drawing action of the piston in the piston water pump, replaces the water quality sampling work through the sampling pump, the cable and the guide pipe, reduces the equipment power consumption requirement, reduces the volume and the weight of the device, and reduces the risk of water sample exposure pollution. After the sampling is finished, the control circuit drives the underground water body automatic acquisition device to automatically climb to the wellhead position through controlling the reverse rotation of the roller, and compared with the equipment recovery mode of manual wire collection, the working efficiency of sampling is greatly improved.
In an alternative embodiment, a piston pump includes: roller, horizontal pole, pull area, top cap, collection bottle and piston.
One end of the drawing belt penetrates through the top cover to be connected with the piston, the piston is located at the bottom of the collecting bottle body in a default state, and a water inlet hole is formed in the bottom of the collecting bottle body.
The other end of the drawing belt is connected with a cross rod, the cross rod is connected with a rolling shaft, and the rolling shaft is connected with a control circuit.
When the underground water body is sampled, the control circuit controls the rolling shaft to roll so as to drive the cross rod to rotate, and then the drawing belt is driven to wind automatically so as to pull up the piston, so that the underground water sample enters the collecting bottle body through the water inlet.
Fig. 4 is a schematic structural diagram of a piston pump (rollers and cross bars are not shown) according to an embodiment of the present invention, wherein one end of a drawing belt penetrates through a top cover to connect with a piston, and the top cover can prevent the piston from being pulled out of a collection bottle. The other end of the drawing belt is connected to the cross rod, when a water sample needs to be extracted, the control circuit controls the rolling shaft to roll to drive the cross rod to rotate, the drawing belt is driven to wind on the cross rod, the drawing belt is shorter and shorter along with winding, and accordingly the piston is pulled up to form vacuum in the collecting bottle body, and groundwater is extracted through the water inlet hole. The embodiment of the invention adopts the drawing belt made of soft materials, so that the problem of space limitation can be well solved, and the water pumping work can be completed in a small space.
In another embodiment, as shown in fig. 5, the rolling shaft and the cross bar can be arranged at the top of the water sample collection cabin, the bottom of the water sample collection cabin is provided with a water pumping hole, and the piston water pump which only comprises the drawing belt, the top cover, the collection bottle body and the piston is placed in the collection cabin, and the water inlet of the piston water pump is fixedly connected with the water pumping hole at the bottom of the cabin.
In an alternative embodiment, as shown in fig. 6, the automatic underground water body collecting device further includes: the buoyancy cabin is an empty cabin.
The buoyancy cabin is connected with the sensor cabin; under the condition that the automatic underground water body collecting device does not work, the buoyancy cabin is used for suspending the automatic underground water body collecting device on the water surface by means of buoyancy.
Specifically, the buoyancy cabin is an empty cabin, so that the self weight is reduced, larger buoyancy can be generated, the whole device can float on the water surface when not working, and the device is prevented from sinking into the water body. Optionally, the buoyancy tanks have a diameter slightly larger than the diameters of the control tank, the water sample collection tank and the sensor tank when in use. The impact force of water can be eliminated to a certain extent, and the use safety of the device is ensured.
In an alternative implementation, to improve the capability of the device to cope with abnormal situations, the embodiment of the present invention designs the following two ways for emergency recovery of the device:
in one mode, the automatic underground water body collecting device further comprises: the magnetic trigger switch is arranged at the bottom ends of all the telescopic support rods and is connected with the control circuit.
Under the condition that the magnetic trigger switch is contacted with an external magnetic object under the attraction of magnetic force, the magnetic trigger switch sends a trigger instruction to the control circuit.
The control circuit controls all the telescopic support rods to be in a contracted state based on the trigger instruction, and simultaneously controls the automatic underground water body acquisition device to stop working.
Specifically, if the system is subject to external force, obstruction or system failure, the embodiment of the invention supports the direct adoption of a manual auxiliary emergency recovery mechanism. The recycler (i.e., the external magnetic object above) may be used to assist the personnel in salvaging when the device fails, has a low power or other problems in operation, and cannot be returned automatically.
Optionally, the recoverer is formed by fixing a magnet by using a nylon rope. The magnetic trigger switch has a magnetic sensor at the center and metallic iron material around the magnetic trigger switch. Fig. 7 (a) is a schematic diagram of a proximity magnetic trigger switch of a retriever according to an embodiment of the present invention, and fig. 7 (b) is a schematic diagram of an automatic underground water body salvaging device after the retriever according to an embodiment of the present invention contacts with the magnetic trigger switch. When the recoverer approaches to the magnetic trigger switch of the device, the metal iron and the magnet generate attractive force, and the recoverer is well positioned on the magnetic trigger switch in a two-to-two attractive mode. When the magnetic induction switch in the center of the magnetic trigger switch receives magnetic force, a trigger instruction is sent to the control circuit, at the moment, the control circuit forces the command device to stop working, and simultaneously controls all the telescopic support rods to recover the contracted state, at the moment, the rollers at the top ends of all the telescopic support rods tightly hold the recoverer, and a worker can salvage the device out of the wellhead.
In the second mode, if the underground water body automatic acquisition device moves downwards along the well pipe wall for a preset period of time, the control circuit does not control the piston of the piston water pump to be pulled up, or after the water sample is acquired for the preset period of time, the control circuit does not control the roller to rotate from inside to outside, the control circuit performs initialization operation so that all the telescopic support rods are in a contracted state, and then the underground water body automatic acquisition device is suspended on the water surface under the action of the buoyancy cabin.
Under the condition that the automatic underground water body collecting device is suspended on the water surface, the control circuit controls all the telescopic supporting rods to be in an extending state, and meanwhile, the control rollers rotate from inside to outside, so that the automatic underground water body collecting device moves upwards along the well pipe wall until reaching a wellhead.
Specifically, if the working time of the device in a certain operation step exceeds a preset time period, a program instruction of the next step is not executed yet, for example, after the underground water body automatic acquisition device moves downwards along the well pipe wall for a preset time period, the control circuit does not control the piston of the piston water pump to be pulled up; after the water sample collection is completed for a preset period of time, the control circuit does not control the roller to rotate from inside to outside, so that the device can be considered to be faulty, at the moment, the control circuit is forced to initialize, so that all the telescopic support rods shrink, and are not fixedly supported on the inner wall of the monitoring well any more, and the device is suspended on the water surface under the action of the buoyancy cabin. At this time, under the feedback of the pressure-proof water level sensor, the control circuit determines that the device is out of the water, and then controls all the telescopic support rods to be in an extending state, and the rollers rotate from inside to outside, so that the device moves towards the wellhead along the well wall.
Optionally, an audible and visual alarm device is arranged on the control cabin shell; the audible and visual alarm device is connected with the control circuit. Under the condition that the automatic underground water body acquisition device is suspended on the water surface, the control circuit controls the alarm device to send an alarm instruction to the audible and visual alarm device; the audible and visual alarm device is used for performing audible and visual alarm according to the alarm instruction so as to remind on-site staff.
In an alternative embodiment, a pipeline type liquid level sensor is arranged on the outer wall of the collecting bottle body.
The pipeline type liquid level sensor is connected with the control circuit and is used for sending an induction instruction to the control circuit under the condition that the water quality sample exists in the collecting bottle body is determined, so that the control circuit determines that water sample collection starts.
If the pipeline type liquid level sensor is not arranged, a worker cannot determine whether the piston water pump smoothly pumps the underground water sample, and only the underground water sample can be collected normally by default, so that the water sampling amount cannot be ensured. According to the embodiment of the invention, the pipeline type liquid level sensor is arranged on the outer wall of the collecting bottle body, when the liquid level sensor determines that the water quality sample exists in the collecting bottle body, the sensing instruction can be sent to the control circuit, so that the water sample collecting is accurately determined, and when the roller cannot continue to rotate or the preset sampling time length is passed, the completion of water sample collecting can be determined.
In an alternative embodiment, the sensor cabin is also provided with a multi-parameter water quality sensor which is a combined electrode and can monitor the conventional parameters of groundwater such as water level, temperature, pH value, dissolved oxygen, oxidation-reduction potential, conductivity, turbidity and the like. The temperature sensor not only can measure the water temperature, but also can carry out temperature compensation correction on the measurement result of the water quality parameter, and the data is more accurate. By arranging the multi-parameter water quality sensor, the automatic acquisition device for the groundwater environment has a water quality detection function.
The water quality detection can be performed after the automatic underground water body acquisition device is positioned at the preset depth and before the underground water body is sampled, and after the control circuit receives the water sample detection result, the piston of the piston water pump is controlled to be pulled up.
In the embodiment of the invention, the sensor cabin is of a porous or multi-gap structure, so that on one hand, underground water can smoothly enter the cabin, and on the other hand, the collision and influence of impurities such as foreign matters in water can be avoided, and the effect of protecting the sensor in the cabin is achieved.
In an alternative embodiment, the control pod comprises: battery compartment and circuit compartment; the battery is placed in the battery compartment, and the control circuit is placed in the circuit compartment.
According to the embodiment of the invention, an external power supply is not used for supplying power, and the power supply can be provided for the normal operation of the underground water body automatic acquisition device only by using the built-in battery, so that the battery cabin and the circuit cabin are designed independently in order to facilitate the replacement of the battery by a user and avoid the misoperation of damaging the control circuit when the battery is replaced. The connection between the units/cabins in the embodiment of the invention can be realized through threaded connection or bonding through waterproof glue.
In an alternative embodiment, the control circuit includes at least: microprocessor, communication module, sampling control module, signal conditioning module, clock circuit, control module and storage module crawl.
The microprocessor can finish the operations of fetching instructions, executing instructions, exchanging information with external components and logic components and the like, and is a core operation control part of the whole circuit; the communication module can be connected with an upper computer (for example, a communication terminal such as a mobile phone) in a wireless way to perform functions such as parameter command setting and data recovery; the sampling control module can set the device to perform sampling action at a preset depth under water, and groundwater is pumped into the collecting bottle body; the signal conditioning module can convert the data signals of the underground water measured by the sensor through operations such as amplification, filtering and the like to generate standard digital signals which can be identified by the system.
The clock circuit is a clock reference of the whole equipment, generates clock signals required by the operation of the single chip microcomputer, and the synchronous operation of all parts of the single chip microcomputer can be ensured by the time sequence under the control of the unique clock signals, and any operation of the system is performed in time sequence; the crawling control module can enable all the rollers to rotate forward and backward, so that the device can move up and down in the well pipe; the storage module can store the monitored groundwater quality parameters.
In summary, the automatic acquisition device for groundwater environment provided by the embodiment of the invention gets rid of the limitations of cables, ducts and external power sources, reduces the volume and weight of instruments and equipment, is convenient to carry, avoids the extra work of winding and paying off, and greatly improves the working efficiency. The whole set of device is directly placed into the underground water monitoring wellhead, so that automatic collection of underground water with preset depth, measurement and automatic recovery of conventional indexes of water quality can be realized, and portability, high efficiency and intellectualization of the whole set of device are improved. And moreover, the underground water is collected in a mode of pumping water without using a sampling pump, so that noise interference is avoided in the whole working process.
Example two
The embodiment of the invention also provides an automatic acquisition system for the groundwater environment, which comprises the automatic acquisition device for the groundwater body provided by the first embodiment, and further comprises: and an upper computer.
The upper computer is connected with the underground water body automatic acquisition device and is used for sending a control instruction to the underground water body automatic acquisition device; the control instruction comprises a preset depth.
The automatic underground water body acquisition device is used for automatically acquiring the water quality of the underground water environment based on the control instruction.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. An automatic underground water body collection device, which is characterized by comprising: the water sample collecting device comprises a control cabin, a water sample collecting cabin, a sensor cabin and a plurality of telescopic supporting rods; the top end of each telescopic supporting rod is provided with a roller;
the bottom end of each telescopic supporting rod is connected with the control cabin, and the control cabin, the water sample collection cabin and the sensor cabin are sequentially connected; a control circuit and a battery are arranged in the control cabin; the control circuit includes: the communication module is connected with the upper computer in a wireless way; a piston water pump is arranged in the water sample collection cabin; a pressure-proof water level sensor is arranged in the sensor cabin;
after the starting work is determined, the control circuit controls all the telescopic support rods to be in an extending state, and simultaneously controls the rollers to rotate from outside to inside so that the underground water body automatic acquisition device moves downwards along the well pipe wall;
the pressure-insulation type water level sensor is used for measuring the water inlet depth of the underground water body automatic acquisition device and sending the water inlet depth value to the control circuit;
the control circuit controls the roller to stop rotating under the condition that the water depth value reaches the preset depth, so that the underground water body automatic acquisition device is positioned at the preset depth; and controlling the piston of the piston water pump to be pulled up so that the underground water sample enters the piston water pump;
after water sample collection is completed, the control circuit controls the roller to rotate from inside to outside so that the underground water body automatic collection device moves upwards along the well pipe wall until reaching a wellhead;
wherein, the piston water pumper includes: the device comprises a roller, a cross rod, a soft drawing belt, a top cover, a collecting bottle body and a piston;
one end of the drawing belt penetrates through the top cover to be connected with the piston, the piston is positioned at the bottom of the collecting bottle body in a default state, and a water inlet hole is formed in the bottom of the collecting bottle body;
the other end of the drawing belt is connected with the cross rod, the cross rod is connected with the rolling shaft, and the rolling shaft is connected with the control circuit;
when the underground water body is sampled, the control circuit controls the rolling shafts to roll so as to drive the cross rods to rotate, and then the drawing belt is driven to wind automatically so as to pull up the piston, so that the underground water sample enters the collecting bottle body through the water inlet hole.
2. The automatic groundwater body harvesting device of claim 1, further comprising: the buoyancy cabin is internally provided with an empty cabin;
the buoyancy cabin is connected with the sensor cabin;
under the condition that the underground water body automatic acquisition device does not work, the buoyancy cabin is used for suspending the underground water body automatic acquisition device on the water surface by means of buoyancy.
3. The automatic groundwater body harvesting device of claim 1, further comprising: the magnetic trigger switches are arranged at the bottom ends of all the telescopic support rods and are connected with the control circuit;
under the condition that the magnetic trigger switch is contacted with an external magnetic object under the attraction of magnetic force, the magnetic trigger switch sends a trigger instruction to the control circuit;
the control circuit controls all the telescopic support rods to be in a contracted state based on the trigger instruction, and simultaneously controls the underground water body automatic acquisition device to stop working.
4. The automatic underground water body collecting device according to claim 2, wherein,
if the control circuit does not control the piston of the piston water pump to be pulled up after the automatic underground water body collecting device moves downwards along the well pipe wall for a preset time period, or the control circuit does not control the roller to rotate from inside to outside after the water sample collection is completed for the preset time period, the control circuit performs initialization operation so that all the telescopic support rods are in a contracted state, and the automatic underground water body collecting device is suspended on the water surface under the action of the buoyancy cabin;
under the condition that the automatic underground water body collecting device is suspended on the water surface, the control circuit controls all the telescopic supporting rods to be in an extending state, and simultaneously controls the rollers to rotate from inside to outside, so that the automatic underground water body collecting device moves upwards along the well pipe wall until reaching a wellhead.
5. The automatic underground water body acquisition device according to claim 4, wherein an audible and visual alarm device is arranged on the control cabin shell; the audible and visual alarm device is connected with the control circuit;
under the condition that the underground water body automatic acquisition device is determined to suspend on the water surface, the control circuit controls the audible and visual alarm device to send an alarm command;
and the audible and visual alarm device is used for performing audible and visual alarm according to the alarm instruction.
6. The automatic underground water body collecting device according to claim 1, wherein a pipeline type liquid level sensor is arranged on the outer wall of the collecting bottle body;
the pipeline type liquid level sensor is connected with the control circuit and is used for sending an induction instruction to the control circuit under the condition that the water quality sample exists in the collecting bottle body is determined, so that the control circuit determines that water sample collection starts.
7. The device for automatically collecting underground water according to claim 1, wherein a multiparameter water quality sensor is further arranged in the sensor cabin, and the sensor cabin is of a porous or multi-gap structure.
8. The apparatus for automatically collecting groundwater body according to claim 1, wherein the control pod comprises: battery compartment and circuit compartment;
the battery is placed in the battery compartment, and the control circuit is placed in the circuit compartment.
9. An automatic groundwater environment collection system, comprising the automatic groundwater environment collection device according to any one of claims 1-8, further comprising: an upper computer;
the upper computer is connected with the automatic underground water body acquisition device and is used for sending a control instruction to the automatic underground water body acquisition device; wherein the control instruction comprises the preset depth;
the automatic underground water body acquisition device is used for automatically acquiring the water quality of the underground water environment based on the control instruction.
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