CN210603478U - Underground water level monitoring device - Google Patents
Underground water level monitoring device Download PDFInfo
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- CN210603478U CN210603478U CN201921211793.6U CN201921211793U CN210603478U CN 210603478 U CN210603478 U CN 210603478U CN 201921211793 U CN201921211793 U CN 201921211793U CN 210603478 U CN210603478 U CN 210603478U
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- lifting rope
- dynamometer
- level monitoring
- monitoring device
- weight rod
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Abstract
The utility model discloses an underground water level monitoring device, include: the device comprises a balance weight rod, a lifting rope and a dynamometer, wherein the density of the balance weight rod is greater than that of water, the balance weight rod is suspended at the lower end of the lifting rope, the lifting rope is movably connected to a force measuring end of the dynamometer and can move relative to the force measuring end and be placed into an observation well, and the lifting rope is an inelastic soft rope. The working principle of the scheme is as follows: 1) the device measures the mass of the weight rod and the linear density of the lifting rope in advance, the weight rod and the lifting rope are lowered by using the dynamometer during installation of the device, the numerical value of the dynamometer is increased along with lowering of the lifting rope, and the lifting rope is fixed at a proper position after the force measurement counting value is reduced; 2) by utilizing the stress balance principle, the buoyancy borne by the weight rod is measured through the dynamometer, the immersion depth of the weight rod is calculated, and the water level depth in the observation well can be deduced by subtracting the immersion depth from the total length of the lifting rope and the weight rod. The utility model discloses simple structure, durability are good, and the monitoring is convenient, monitoring efficiency is high, is applicable to laying on a large scale and ground water level monitoring.
Description
Technical Field
The utility model relates to a ground water level monitoring technology field especially relates to a ground water level monitoring devices.
Background
The underground water level monitoring device acquires underground water level change data by arranging corresponding device components in the underground water level observation well and regularly or intensively acquiring underground water level numerical values.
The current groundwater level monitoring devices fall into the following two categories: 1. the water pressure sensor is embedded and is matched with a paperless recorder or an automatic acquisition system to collect data. The method has the advantages that the underground water level monitoring data can be recorded in real time, and the wireless transmission can be realized by additionally arranging the wireless transmission module and matching with a corresponding platform. However, since the device includes the water pressure sensor and the wireless transmission module, the cost is high and the protection cost is high. The power supply problem is complex, the cost is further increased by adopting a battery, and potential safety hazards are increased by adopting wired power supply. 2. The method has the advantages that a measuring device does not need to be stored on site, protective measures do not need to be taken, and the underground water level measuring precision is high. The disadvantages are that a measuring ruler needs to be put down in each measurement, and the efficiency of large-area periodic measurement is too low.
Therefore, how to provide a simple and easy-to-use groundwater level monitoring device suitable for large-scale monitoring is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an underground water level monitoring device, the device is simple easy-to-use, and monitoring efficiency is high, is applicable to the monitoring of extensive ground water level.
In order to achieve the above object, the present invention provides the following technical solutions:
an underground water level monitoring device comprising: counter weight pole, lifting rope, dynamometer, the density of counter weight pole is greater than the density of water, the counter weight pole hang in the lower extreme of lifting rope, lifting rope swing joint in the dynamometry end of dynamometer and can be relative the dynamometry end removes and transfers to observing the well in, the lifting rope is the inelastic soft rope.
Preferably, the weight lever is a constant section lever.
Preferably, the cross-sectional shape of the weight lever is a rectangle, a circle, or a regular polygon.
Preferably, the lifting rope is provided with scales.
Preferably, the underground water level monitoring device further comprises an observation well protection cover positioned on a well mouth of the observation well, the dynamometer is positioned above the observation well protection cover, and the observation well protection cover is provided with a through hole used for communicating the inside of the observation well with the outside atmosphere.
Preferably, the dynamometer is a hand-held dynamometer.
Preferably, the dynamometer includes a load cell, a data transmission module, a calculation module, a display module, and a data storage module.
Preferably, the groundwater level monitoring apparatus further comprises a dynamometer fixing device for fixing the dynamometer.
Preferably, the ground water level monitoring device further comprises a lifting rope fixing device for fixing the lifting rope.
The working principle of the scheme is as follows:
1) the device measures the mass of the weight rod and the linear density of the lifting rope in advance, the weight rod and the lifting rope are lowered by using the dynamometer during installation of the device, the numerical value of the dynamometer is increased along with lowering of the lifting rope, and the lifting rope is fixed at a proper position after the force measurement counting value is reduced;
2) by utilizing the stress balance principle, the buoyancy borne by the weight rod is measured through the dynamometer, the immersion depth of the weight rod is calculated, and the water level depth in the observation well can be deduced by subtracting the immersion depth from the total length of the lifting rope and the weight rod.
The utility model discloses following beneficial effect has:
(1) the device has simple structure, low cost, good durability, no need of power supply and suitability for large-scale arrangement;
(2) simultaneously, the monitoring only needs to carry the handheld dynamometer, the result can be directly monitored, the result can be led out, the monitoring is convenient, the monitoring efficiency is improved, and the device is suitable for large-scale use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a ground water level monitoring device according to an embodiment of the present invention.
In fig. 1:
1-counterweight rod, 2-lifting rope, 3-observation well protection cover, 4-dynamometer and 5-observation well.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a groundwater level monitoring device according to an embodiment of the present invention.
The utility model provides an underground water level monitoring device, include: the water-cooled observation well comprises a balance weight rod 1, a lifting rope 2 and a dynamometer 4, wherein the density of the balance weight rod 1 is greater than that of water, the balance weight rod 1 is suspended at the lower end of the lifting rope 2, the lifting rope 2 is movably connected to the force measuring end of the dynamometer 4 and can move relative to the force measuring end and be lowered into the observation well 5, and the lifting rope 2 is an inelastic soft rope.
The working principle of the scheme is as follows:
1) the device measures the mass (or gravity) of a weight rod 1 and the linear density of a lifting rope in advance, the weight rod 1 and the lifting rope 2 are lowered by using a dynamometer 4 when the device is installed, the numerical value of the dynamometer 4 is increased along with the lowering of the lifting rope 2, the sum of the gravity of the weight rod 1 and the lifting rope 2 which is lowered gradually is increased, the lifting rope 2 is fixed at a proper position after the numerical value of the dynamometer 4 is reduced, the lower part of the weight rod 1 enters the position below the water surface, the buoyancy of water borne by the weight rod 1 is increased along with the gradual lowering of the weight rod 1, therefore, the numerical value of the dynamometer 4 is reduced, and the lowering length of the lifting rope 2 is fixed when the weight rod 1 does not enter the position below the water surface completely;
2) by utilizing a stress balance principle, the buoyancy force borne by the weight rod 1 is measured through the dynamometer 4, the immersion depth of the weight rod 1 is calculated, and the water level depth in the observation well 5 can be deduced by subtracting the immersion depth from the total length of the lifting rope 2 and the weight rod 1.
The calculation process of the underground water level in the scheme is as follows:
when a part of the weight lever 1 is immersed below the water surface, the following relationship ① exists according to the force analysis:
①F＝Ga+Gb－F0；
wherein F is the tension measured by the dynamometer,
Gais the weight of the weight lever, Ga＝g×maWherein g is the acceleration of gravity, maIs the mass of the weight lever, GaOr can be measured by a weight measuring device before the water level is measured;
Gbfor the gravity of a lifting rope lowered into the observation well, Gb＝g×L×ρbWherein g is the acceleration of gravity, L is the length of the lifting rope put down inside the observation well, namely, the distance from the lower end of the lifting rope to the well mouth of the observation well, rhobIs the linear density of the lifting rope, i.e. the mass of the lifting rope per unit length;
F0known as buoyancy F, to which the weight rod is subjected0There is a relationship with the density of the liquid, the acceleration of gravity, and the volume below the liquid level in which the object is immersed, namely the following relationship ②:
②F0＝ρ0×g×V；
where ρ is0G is the gravity acceleration and V is the volume of the weight rod immersed below the water surface;
by combining the above relations, V can be calculated:
V＝(g×ma+g×L×ρb－F)÷(ρ0×g)；
when the weight rod is a uniform cross-section rod and is vertically immersed in the water, the length of the weight rod below the immersed water surface can be calculated by the following relation ③:
③h＝V÷Sa＝[(g×ma+g×L×ρb－F)÷(ρ0×g)]÷Sa；
wherein S isaThe cross-sectional area of the weight rod, and h is the length of the part of the weight rod immersed below the water surface.
By the above relations, the depth H of the groundwater level can be finally obtained according to the following relation ④:
④H＝a+L－h；
wherein, H is the degree of depth of ground water level, promptly, observes the distance of the surface of water to the observation well head in the well, and a is the length of counter weight rod, and L is for transferring the length of the lifting rope in the observation well.
It should be noted that the weight lever 1 may be designed in various shapes, such as a uniform cross-section rod, a tapered rod or other variable cross-section rod, and preferably, the weight lever 1 in this embodiment is a uniform cross-section rod. When the lower end of the counterweight rod 1 is immersed below the water surface, along with the descending of the counterweight rod 1, the part of the counterweight rod 1 immersed below the water surface is larger and larger, the buoyancy force applied to the counterweight rod 1 is larger and larger, and in order to calculate the buoyancy force applied to the counterweight rod 1, the counterweight rod 1 is designed to be a rod with a uniform cross section.
Preferably, the cross-sectional shape of the weight lever 1 is rectangular, circular or regular polygonal. In this embodiment, a cylindrical rod is preferably used as the weight lever 1.
Specifically, the weight lever 1 in the scheme is a cylindrical lever which is higher in density than water and not easy to be soaked in water or corroded by underground water, the cylinder is proper in length and is suspended in the observation well 5 through the lifting rope 2, and when the water level is measured, one part of the weight lever 1 is located above the water surface, and the other part of the weight lever is located below the water surface. Preferably, the weight lever 1 is a metal lever, such as a stainless steel lever, a copper alloy lever, an aluminum alloy lever, or the like. Of course, the weight rod 1 in this scheme may also be made of other materials with density greater than water, such as glass, ceramic or other polymer materials.
Preferably, the lifting rope 2 is provided with a scale. When the lifting rope 2 is transferred, the transfer length can be observed in real time, and observation and control are facilitated. The lifting rope 2 can be soft and light non-elastic soft rope such as nylon rope, cotton rope, nylon rope and the like.
Preferably, the underground water level monitoring device further comprises an observation well protection cover 3 positioned on an inlet of the observation well 5, the dynamometer 4 is positioned above the observation well protection cover 3, and the observation well protection cover 3 is provided with a through hole for communicating the inside of the observation well 5 with the outside atmosphere. The observation well protection cover 3 is used for protecting the observation well 5 and internal devices, and meanwhile, the protection cover is not closed completely, so that the communication between the inside of the observation well 5 and the atmosphere is ensured, and the sensitivity of water level change in the well is prevented from being influenced.
Preferably, the dynamometer 4 is a hand-held dynamometer.
The dynamometer 4 may be a mechanical dynamometer or an electronic dynamometer, and preferably, the dynamometer 4 includes a load cell, a data transmission module, a calculation module, a display module, and a data storage module. The measuring range is determined according to the weight of the balance weight rod 1 and the lifting rope 2, the water level depth can be automatically calculated and stored by inputting the length of the lifting rope 2, and meanwhile, the data can be exported. Specifically, the force measuring sensor is used for measuring the tension at the measuring ends of the lifting rope 2 and the dynamometer 4, the data transmission module is used for converting an electric signal sent by the force measuring sensor into a processable data signal and sending the processable data signal to the calculation module, after the calculation module receives information such as the tension, the length of the lifting rope and the like, the underground water level is calculated according to the relation, the underground water level is sent to the display module through the data transmission module to be displayed, and the data storage module is used for storing data of a measuring result. The data of the electronic dynamometer can be exported, so that later statistical processing and the like are facilitated.
Preferably, the ground water level monitoring apparatus further comprises a load cell fixing means for fixing the load cell 4. After dynamometer 4's reading is stable, utilize dynamometer fixing device can fix dynamometer 4's position steadily, the operation such as operating personnel record data of being convenient for, in addition, through fixed dynamometer 4's position, can also make things convenient for operating personnel to transfer the operation of lifting rope 2 to can make measuring process more convenient, laborsaving, accurate.
Preferably, the ground water level monitoring apparatus further comprises a lifting rope fixing means for fixing the lifting rope 2. After dynamometer 4 reading is stable, through the fixed position of lifting rope 2 of lifting rope fixing device, just can conveniently observe the length of transferring of lifting rope 2 more, still avoid lifting rope 2 to make a round trip to rock and the influence measurement accuracy's that causes problem.
The utility model discloses following beneficial effect has:
(1) the device has simple structure, low cost, good durability, no need of power supply and suitability for large-scale arrangement;
(2) simultaneously, the monitoring only needs to carry the handheld dynamometer, the result can be directly monitored, the result can be led out, the monitoring is convenient, the monitoring efficiency is improved, and the device is suitable for large-scale use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An underground water level monitoring device, comprising: counter weight pole (1), lifting rope (2), dynamometer (4), the density of counter weight pole (1) is greater than the density of water, counter weight pole (1) hang in the lower extreme of lifting rope (2), lifting rope (2) swing joint in the dynamometry end of dynamometer (4) and can be relative the dynamometry end removes and transfers to in observation well (5), lifting rope (2) are the inelastic soft rope.
2. A groundwater level monitoring device according to claim 1, wherein the weight lever (1) is a uniform cross section lever.
3. A groundwater level monitoring device according to claim 2, wherein the cross-sectional shape of the weight lever (1) is rectangular, circular or regular polygonal.
4. A groundwater level monitoring device according to claim 1, wherein the lifting rope (2) is provided with a scale.
5. A groundwater level monitoring device according to claim 1, further comprising a manhole protection cover (3) located on a wellhead of the manhole (5), the dynamometer (4) being located above the manhole protection cover (3), the manhole protection cover (3) being provided with a through hole for communicating the inside of the manhole (5) with the outside atmosphere.
6. A groundwater level monitoring device according to claim 1, wherein the dynamometer (4) is a hand-held dynamometer.
7. A groundwater level monitoring device according to claim 1, wherein the dynamometer (4) includes a load cell, a data transmission module, a calculation module, a display module and a data storage module.
8. A groundwater level monitoring apparatus according to claim 1, further comprising a dynamometer fixing means for fixing the dynamometer (4).
9. A groundwater level monitoring device according to claim 1, further comprising a lifting rope fixing device for fixing the lifting rope (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921211793.6U CN210603478U (en) | 2019-07-29 | 2019-07-29 | Underground water level monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921211793.6U CN210603478U (en) | 2019-07-29 | 2019-07-29 | Underground water level monitoring device |
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| CN210603478U true CN210603478U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243430A (en) * | 2019-07-29 | 2019-09-17 | 北京市政路桥股份有限公司 | A kind of groundwater level monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110243430A (en) * | 2019-07-29 | 2019-09-17 | 北京市政路桥股份有限公司 | A kind of groundwater level monitoring device |
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