CN214748288U - Water level measuring device - Google Patents
Water level measuring device Download PDFInfo
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- CN214748288U CN214748288U CN202120916856.9U CN202120916856U CN214748288U CN 214748288 U CN214748288 U CN 214748288U CN 202120916856 U CN202120916856 U CN 202120916856U CN 214748288 U CN214748288 U CN 214748288U
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Abstract
The utility model belongs to the technical field of ground water level monitoring, especially, relate to water level measuring device. Including control system, first ammeter, second ammeter and the power that is located the ground top to and set up at subaerial installation pipe, the lateral wall of installation pipe is equipped with the inlet opening in vertical direction, be equipped with first mounting groove and second mounting groove on the installation pipe relatively, be equipped with first resistance, first guide post, iron plate and conducting strip in the first mounting groove, first resistance and the parallel interval setting of first guide post, iron plate sliding connection is on first guide post, the outer wall of first guide post is equipped with conductive coating, the one end of conducting strip is fixed in on the iron plate, the other end and the first resistance in close contact with of conducting strip, second resistance sets up in the second mounting groove. This technical scheme is used for solving because ground water level measuring's operating mode is complicated, leads to traditional level gauge to the not good problem of ground water level monitoring effect.
Description
Technical Field
The utility model belongs to the technical field of ground water level monitoring, especially, relate to water level measuring device.
Background
The underground water level monitoring is widely applied to the fields of geological disasters, water quality monitoring, environment monitoring and the like, and has wide applicability. The current underground water level monitoring mainly comprises a float type water level meter and a pressure sensing type water level meter. The float-type water level gauge is not widely used due to the complex equipment, the stay wire is easily affected by expansion with heat and contraction with cold, wire clamping and the like, and the use is limited by drilling and more conditions on site; generally, a pressure sensing type water level meter is mainly used, but underground water is mainly used as hydrostatic pressure to convert water level height for indirect measurement, and in the actual geological process, the underground water often flows, and different densities are caused along with the difference of underground water turbidity, mineral composition, content and the like, and larger errors often occur in the measurement process due to the difference of measurement environment and temperature.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned technique, the utility model aims to provide a water level measuring device for solve because ground water level measuring's operating mode is complicated, lead to traditional level gauge to the not good problem of ground water level monitoring effect.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the device comprises a control system, a first ammeter, a second ammeter and a power supply which are positioned above the ground, and an installation pipe arranged below the ground, wherein the side wall of the installation pipe is provided with a water inlet hole in the vertical direction, the installation pipe is relatively provided with a first installation groove and a second installation groove, a first resistor, a first guide post, an iron block and a conducting plate are arranged in the first installation groove, the first resistor and the first guide post are arranged at intervals in parallel, the iron block is connected to the first guide post in a sliding manner, the outer wall of the first guide post is provided with a conductive coating, one end of the conducting plate is fixed on the iron block, the other end of the conducting plate is in close contact with the first resistor, the second installation groove is internally provided with a second resistor, the materials, the cross section shapes and the areas of the first resistor and the second resistor are the same, the second guide post is arranged in the installation pipe, and a floating block and a magnetic block are arranged on the second guide post in a sliding manner, the magnetic block can drive the iron block to slide on the first guide column under the action of magnetic force;
one pole of the power is connected with the conductive coating at the lower end of the first guide post through a wire, the other pole of the power is electrically connected with the upper end of the first resistor through a wire, the first ammeter is arranged on the wire between the power and the conductive coating, the second resistor, the second ammeter and the power form a loop, and the first ammeter and the second ammeter are electrically connected with the control system.
It is further defined that the connection wires of the power supply, the first ammeter and the second ammeter are disposed in the first mounting groove and the second mounting groove.
Further inject, the bottom of installation pipe is equipped with arranges the husky hole, the upper end of installation pipe is equipped with high-pressure cleaning equipment, and its beneficial effect lies in, and after long-time the use, silt can enter into in the installation pipe through first inlet opening to form silt siltation sediment. At the moment, high-pressure water is injected downwards from the upper end of the installation pipe only through high-pressure cleaning equipment, and the high-pressure water can impact silt in the installation pipe and is discharged through a sand discharge hole in the bottom, so that the influence of silt precipitation on water level measurement is eliminated.
Further inject, the bottom of installation pipe is equipped with sealed end, the upper surface of sealed end is the inclined plane, arrange the sand hole and be located the outer wall of lower department installation pipe in bottom surface position, its beneficial effect lies in that the inclined plane is convenient for silt to collect to the low place, makes it discharge through arranging the sand hole more easily.
Further inject, still including setting up the protective sleeve in the installation pipe outside, protective sleeve is last from last to being equipped with the second inlet opening down, the joint is fixed between installation pipe and the protective sleeve, and its beneficial part lies in, and the inside and the outside of pipe will be installed to the second inlet opening on the protective sleeve communicates, makes the work that this water level measuring instrument can be normal, and protective sleeve's installation makes this measuring instrument can be applicable to the drilling and does not have the sleeve pipe dado measure, the instrument under the abominable operating mode such as drilling wall ground poor stability is installed and is measured fast, forms better protection to the instrument, the life of extension measuring apparatu.
Further inject, control system contains communication module and calculation module, the last switch that is provided with of control system's communication module, the switch sets up in the lock incasement, and its beneficial part lies in, when carrying out silt to the measuring apparatu of field installation and washing, can close communication module's switch, avoids it to send wrong ground water level detection report to the central control room, and the purpose of setting in the lock incasement is, can only be operated by appointed staff, avoids other people to do harm and the maloperation.
Further limiting, the outer wall of the installation pipe is provided with an arc-shaped boss, the iron block is provided with an arc-shaped groove matched with the arc-shaped boss, the arc-shaped boss is positioned inside the arc-shaped groove and used for limiting the rotary motion of the iron block on the first guide post, elastic conducting strips are circumferentially and uniformly arranged on the surface of the sliding connection part of the iron block and the first guide post, one end of each elastic conducting strip is fixed on the iron block, the other end of each elastic conducting strip is in contact with the surface of the first guide post, and the installation method has the advantages that the arc-shaped boss and the arc-shaped groove can limit the rotation of the iron block on the first guide post, so that the conducting strips on the iron block are always in contact with the first resistor, the circuit connection effect is ensured, and meanwhile, the elastic conducting strips are arranged to have certain deformation capacity when the liquid level depth of the inclined shaft is measured, therefore, the iron block can swing in the horizontal direction, so that the iron block always keeps horizontal sliding, the iron block is prevented from inclining, the conducting strip is prevented from inclining to be in contact with the first resistor, the water level measuring error is caused, and good contact between the iron block and the conducting coating on the first guide post can be ensured.
Further limit, first guide post, second guide post and installation pipe are the PVC pipe, and its beneficial part lies in that plastics can not be attracted by magnet, and plastics nonconducting simultaneously can not cause the influence to the circuit, and its plastics's quality is lighter, is convenient for transport and installation.
Preferably, the magnetic block is located inside the floating block, the magnetic block and the floating block form an annular whole, the diameter of the inner ring of the annular whole is larger than that of the second guide post, the floating block is connected with the second guide post in a sliding mode, the magnetic block and the floating block can be enhanced in integrity, meanwhile, the diameter of the inner ring of the annular whole is larger than that of the second guide post, the annular whole can swing on the second guide post, and when inclined shaft measurement is facilitated, the annular whole can keep horizontal up-down floating, the magnetic attraction effect on the iron block is improved, and the error of water level measurement is reduced.
Preferably, the installation pipes can be spliced into a plurality of sections according to the depth of an actually measured water level, the end parts of the adjacent installation pipes are connected by threads, after the end parts of the adjacent installation pipes are screwed, the projections of the adjacent first resistor, the first guide post and the second guide post are respectively superposed in the axis direction of the installation pipes, the threaded connection part of the adjacent installation pipes is provided with a sealing gasket, the installation pipe positioned at the lowermost end is provided with a sealing end, the upper ends of the first resistor and the conductive coating in the installation pipes are respectively provided with a conductive spring, and the lower ends of the first resistor and the conductive coating are respectively provided with a contact conducting strip.
The water level calculation method of the water level measurement device comprises the following specific steps:
(1) let the length of the second resistor be L0Resistance value of R2The current measured by the second current meter is I0The power supply voltage is U0Then, there are: i is0＝U0/R2。
(2) It is alpha (instrument central axis inclination is unanimous with the angle of well slope when installing) angle to establish well slope (the contained angle of drilling central line and plumb line), and the length of first resistance is L, and when water level variation was to h height, the kicking block made the magnetic path drive iron plate slide to the position of liquid level on first guide post under the effect of buoyancy to make first resistance upper portion length be L- (h/cos alpha) part and put through, first galvanometer records the electric current and is I, has this moment: i is U0/RL-(h/cosα)。
(3) Due to the first resistor and the second resistor U0Equal, so that there are: i is0·R2＝I·RL-(h/cosα)；
Further comprising: rL-(h/cosα)/R2＝I0/I；
Because the sectional areas and the material resistivities of the resistor 1 and the resistor 2 are the same, the following are provided: rL-(h/cosα)/R2＝[L-(h/cosα)]/ L0；
The following two formulas are jointly deduced: l- (h/cos α) ═ I0/I)·L0。
(4) When the device is installed, the elevation of the installation hole can be measured (set as H)0) Then, the groundwater level elevation H is derived as:
H＝H0-[L-(h/cosα)]·cosα＝H0-(I0/I)·L0cos α, and the height of the groundwater level at that time can be calculated by substituting the known quantity.
When the borehole is vertical, the well deviation α is 0 °, then cos α is 1, then: h ═ H0-(I0/I)·L0。
Therefore, the resistivity does not participate in calculation by the method, and errors caused by different resistivities due to temperature change are avoided. The underground water level height of any inclined shaft can be measured accurately.
The technical effects of the utility model are as follows: the utility model discloses a two resistance current measuring's mode can realize the deep high accuracy measurement of groundwater level full hole, and this measuring apparatu can avoid because groundwater flow state is different, groundwater turbidity is different, mineral composition and content are different when carrying out groundwater level measurement, causes the problem of influence for measurement accuracy, can also avoid environmental factor such as temperature variation simultaneously, causes the problem of the error that single resistance resistivity changes and forms. In addition, the measuring instrument has simple structure and low cost, has low requirements on the drilling quality and the stability of the hole wall of the underground water level detecting hole, and is suitable for underground position measurement of any well deviation. And the main measuring parts of the measuring instrument are all drawn to the ground to be distributed, no core part exists underground, the equipment is convenient to maintain and repair, the long-term use of the equipment can be ensured, and the service life is prolonged.
Drawings
Fig. 1 is a schematic diagram of the circuit connection in the water level measuring device according to the present embodiment.
Fig. 2 is a partial sectional view showing the overall structure of the water level measuring apparatus according to the present embodiment.
Fig. 3 is a schematic top view of the mounting tube in this embodiment.
Fig. 4 is a partially enlarged view of a portion a in fig. 3 according to the present embodiment.
Fig. 5 is a schematic view showing the installation of the protective sleeve in this embodiment.
Fig. 6 is a schematic diagram of the splicing of the installation pipes in this embodiment.
Reference numerals
The device comprises an installation pipe 1, a first resistor 2, a second resistor 3, a first guide post 4, an iron block 5, a conducting strip 6, a second guide post 7, a magnetic block 8, a floating block 9, a second ammeter 10, a first ammeter 11, a power supply 12, a cleaning pipe 13, a sand discharge hole 14, a first water inlet hole 15, an arc-shaped groove 16, an arc-shaped boss 17, a protective sleeve 18, a clamping ring 19, a conductive coating 20, a contact conducting strip 21, a conductive spring 22 and an elastic conducting strip 23.
Detailed Description
The following is further detailed by way of specific embodiments:
as shown in fig. 1, 2, 3 and 4, the water level measuring device comprises a control system, the control system mainly comprises a calculation module and a communication module, the calculation module is used for calculating data measured by a first current meter 11 and a second current meter 10 together with other known parameters so as to obtain the corresponding height of underground water, the communication module transmits the liquid level data of a field monitoring point to a specified remote monitoring system for monitoring, the specific structure of the water level measuring device mainly comprises a mounting pipe 1, first water inlet holes 15 are arranged on the mounting pipe 1 at equal intervals, a first mounting groove and a second mounting groove are arranged inside the wall thickness of the mounting pipe 1, a first resistor 2, a first guide post 4, an iron block 5 and a conducting strip 6 are arranged in the first mounting groove, a second resistor 3 is arranged in the second mounting groove, the first resistor 2 and the second resistor 3 are located in one environment, the resistivity changes of the first resistor 2 and the second resistor 3 are almost the same, so that the obtained current value is more accurate, and errors caused by external factors such as temperature and the like to liquid level measurement can be avoided. In this embodiment, the materials, cross-sectional shapes and areas of the first resistor 2 and the second resistor 3 are the same, and the length of the second resistor 3 is known data when the resistor is installed, that is, the length of the first resistor 2 connected to the circuit can be calculated by the current value of the power source 12 flowing through the first resistor 2 and the second resistor 3.
In the embodiment, the concrete connection structure is that the iron block 5 is slidably connected to the first guide post 4, one end of the conducting strip 6 is fixedly connected to the iron block 5, and the other end of the conducting strip 6 is in contact with the surface of the first resistor 2, in this embodiment, the conductive plate 6 is made of a low resistivity elastic sheet, a second guide post 7 is further disposed inside the mounting tube 1, the second guide post 7 is provided with a magnetic block 8 and a floating block 9, the magnetic block 8 is positioned inside the floating block 9, and the annular whole body formed by the magnetic block 8 and the floating block 9 is connected with the second guide post 7 in a sliding way, the diameter of the inner ring of the annular whole body is larger than that of the second guide post 7, like this the annular is whole can swing on second guide post 7, also when being convenient for the inclined shaft to measure, and the annular is whole can keep the level to float from top to bottom, promotes the effect of inhaling of magnetism to iron plate 5, reduces water level measurement's error. The center lines of the first resistor 2, the first guide post 4, the second guide post 7 and the arc-shaped boss 17 are arranged on the same plane. The float 9 may be a foam board in this embodiment. When the liquid level rises, the floating block 9 drives the magnetic block 8 to slide upwards along the second guide column 7 under the action of buoyancy, meanwhile, the magnetic block 8 drives the iron block 5 to slide upwards along the first guide column 4 under the action of magnetic force, and when the liquid level falls, the floating block 9 slides downwards under the action of self gravity and the gravity of the magnetic block 8, so that the iron block 5 can be driven to slide downwards.
Preferably, the outer wall of the installation tube 1 is provided with an arc-shaped boss 17, the specific installation position is on the surface of the opening of the first installation groove, the iron block 5 is provided with an arc-shaped groove 16 matched with the arc-shaped boss 17, the arc-shaped boss 17 is positioned inside the arc-shaped groove 16 to limit the rotary motion of the iron block 5 on the first guide post 4, the surface of the sliding connection part of the iron block 5 and the first guide post 4 is circumferentially and uniformly provided with an elastic conducting strip 23, one end of the elastic conducting strip 23 is fixed on the iron block 5, the other end of the elastic conducting strip 23 is contacted with the surface of the first guide post 4, the arrangement of the arc-shaped boss 17 and the arc-shaped groove 16 can limit the rotation of the iron block 5 on the first guide post 4, so that the conducting strip 6 on the iron block 5 is always contacted with the first resistor 2, the circuit connection effect is ensured, and the purpose of arranging the elastic conducting strip 23 is to limit, when measuring the liquid level degree of depth of inclined shaft, because elastic conducting strip 23 has certain deformability, so iron plate 5 can go on swinging in the horizontal direction, makes iron plate 5 keep the horizontal slip all the time, avoids iron plate 5 slope, causes conducting strip 6 and first resistance 2 slope contact, leads to water level measurement error's problem.
The circuit connection relationship of the water level measuring instrument is that, one part is that the positive pole of the power supply 12 is electrically connected with the conductive coating at the lower end of the first guide post through a lead, the negative pole of the power supply 12 is electrically connected with one end of the first resistor 2 above the water surface through a lead, the first ammeter 11 is connected in series with the lead connected between the power supply 12 and the conductive coating, and the circuit connection mode of the second part is that the second resistor 3 and the second ammeter are connected in series with the positive pole and the negative pole of the power supply 12.
Preferably, power 12, first ammeter 11 and second ammeter 10 in this embodiment can be installed to ground along the wire guide of arranging in first mounting groove and the second mounting groove, such advantage lies in being convenient for maintain and install, can also improve its practical life simultaneously, and what adopt in this embodiment is that solar cell panel charges the battery, the battery carries out the mode of supplying power to whole circuit and guarantees the normal operating of equipment in the field, the wire sets up in first mounting groove and second mounting groove simultaneously, can simplify the complexity of this mounting tube 1, make it more convenient in the installation.
Preferably, be equipped with sediment outflow hole 14 in the bottom of installation pipe 1, the upper end of installation pipe 1 is equipped with high pressure cleaning equipment, high pressure cleaning equipment mainly includes water pump and scavenge pipe 13, such benefit lies in, use this water level measuring apparatu for a long time after, silt can enter into in installation pipe 1 through first inlet opening 15, and form silt siltation and deposit, only need pour into the high pressure water downwards from the upper end of installation pipe 1 through high pressure cleaning equipment this moment, the inside silt of installation pipe 1 will be strikeed to the high pressure water, make it discharge through sediment outflow hole 14 of bottom, draw water with the suction pump outside the instrument simultaneously, can be with sediment after the long-term use deposit outside discharge instrument and the drilling, thereby eliminate the influence of sediment to water level measurement. Preferably, the bottom surface of the installation pipe 1 is an inclined surface, and the sand discharge hole 14 is located on the outer wall of the installation pipe 1 at a lower position of the bottom surface, so that the silt is conveniently collected to the lower position of the bottom surface, and the silt is more easily discharged through the sand discharge hole 14. Preferably, the control system comprises a communication module arranged in the field, a switch is arranged on the communication module, and the switch is arranged in the lock box.
As shown in fig. 5, in order to further improve the practicability and safety of the water level measuring instrument, the water level measuring instrument can adapt to more complicated and severe working conditions such as no casing protection wall measures and poor stability of the wall rock soil of a drilled hole in a drilled hole, and can improve the service life of the water level measuring instrument, the protective sleeve 18 outside the installation pipe 1 is provided with second water inlet holes at intervals from top to bottom on the protective sleeve 18, and the second water inlet holes communicate the inside and the outside of the installation pipe 1. The connection mode of the installation pipe 1 and the protection sleeve 18 is that the upper end and the lower end inside the protection sleeve 18 are provided with a clamping ring 19, the outer side surface of the clamping ring 19 is circumferentially provided with a welding lug, the welding lug is welded with the inner wall of the protection sleeve, and the installation pipe 1 only needs to be placed in a middle through hole of the clamping ring 19.
As shown in fig. 6, if installation pipe 1 needs the multistage concatenation, the tip of adjacent installation pipe 1 adopts threaded connection, and the tip of adjacent installation pipe 1 screws up the back, and the projection coincidence of adjacent first resistance 2 in the axis direction of installation pipe 1, the threaded connection portion of adjacent installation pipe 1 is equipped with seal ring, is located the bottommost installation pipe 1 is equipped with the sealed end, equal divide the upper end of first resistance 2 and conductive coating 20 in the installation pipe 1 and do not be equipped with conductive spring 22, and equal divide the lower extreme of first resistance 2 and conductive coating 20 and do not be equipped with contact conducting strip 21, and conductive spring 22 and contact conducting strip 21's effect is the contact effect between the adjacent first resistance 2 of reinforcing and conductive coating 20.
The method for calculating the water level of the double-resistor high-precision underground water level measuring instrument comprises the following steps: (1) let the length of the second resistor be L0Resistance value of R2The current measured by the second current meter is I0The power supply voltage is U0Then, there are: i is0＝U0/R2。
(2) It is alpha (instrument central axis inclination is unanimous with the angle of well slope when installing) angle to establish well slope (the contained angle of drilling central line and plumb line), and the length of first resistance is L, and when water level variation was to h height, the kicking block made the magnetic path drive iron plate slide to the position of liquid level on first guide post under the effect of buoyancy to make first resistance upper portion length be L- (h/cos alpha) part and put through, first galvanometer records the electric current and is I, has this moment: i is U0/RL-(h/cosα)。
(3) Due to the first resistor and the second resistor U0Equal, so that there are: i is0·R2＝I·RL-(h/cosα)；
Further comprising: rL-(h/cosα)/R2＝I0/I；
Because the sectional areas and the material resistivities of the resistor 1 and the resistor 2 are the same, the following are provided: rL-(h/cosα)/R2＝[L-(h/cosα)]/ L0；
The following two formulas are jointly deduced: l- (h/cos α) ═ I0/I)·L0。
(4) When the device is installed, the elevation of the installation hole can be measured (set as H)0) Then, the groundwater level elevation H is derived as:
H＝H0-[L-(h/cosα)]·cosα＝H0-(I0/I)·L0cos α, and the height of the groundwater level at that time can be calculated by substituting the known quantity.
When the borehole is vertical, the well deviation α is 0 °, then cos α is 1, then: h ═ H0-(I0/I)·L0。
Because the heights of the iron block and the magnetic block are small, the distance higher than the liquid level height can be ignored during calculation, and if liquid level data with relatively high precision is required, the heights of the iron block and the floating block can be substituted into calculation.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The water level measuring device is characterized by comprising a control system, a first ammeter, a second ammeter and a power supply which are positioned above the ground, and an installation pipe arranged under the ground, wherein the side wall of the installation pipe is provided with a water inlet hole in the vertical direction, the installation pipe is relatively provided with a first installation groove and a second installation groove, the first installation groove is internally provided with a first resistor, a first guide post, an iron block and a conducting strip, the first resistor and the first guide post are arranged in parallel at intervals, the iron block is connected to the first guide post in a sliding manner, the outer wall of the first guide post is provided with a conducting coating, one end of the conducting strip is fixed on the iron block, the other end of the conducting strip is in close contact with the first resistor, the second installation groove is internally provided with a second resistor, the materials, the cross section shapes and the areas of the first resistor and the second resistor are all the same, and the second guide post is arranged inside the installation pipe, the second guide column is provided with a floating block and a magnetic block in a sliding manner, the floating block can drive the magnetic block to slide along the second guide column under the action of buoyancy, and the magnetic block can drive the iron block to slide on the first guide column under the action of magnetic force;
one pole of the power is connected with the conductive coating at the lower end of the first guide post through a wire, the other pole of the power is electrically connected with the upper end of the first resistor through a wire, the first ammeter is arranged on the wire between the power and the conductive coating, the second resistor, the second ammeter and the power form a loop, and the first ammeter and the second ammeter are electrically connected with the control system.
2. The water level measuring device of claim 1, wherein the connection wires of the power supply, the first ammeter and the second ammeter are disposed in the first mounting groove and the second mounting groove.
3. The water level measuring device of claim 1, wherein a sand discharge hole is formed at the bottom of the installation pipe, and a high pressure cleaning device is provided at the upper end of the installation pipe.
4. The water level measuring device of claim 3, wherein the bottom end of the mounting tube is provided with a sealing end, the upper surface of the sealing end is an inclined surface, and the sand discharge hole is formed in the outer wall of the mounting tube at the lower position of the sealing end.
5. The water level measuring device of claim 1, further comprising a protective sleeve arranged outside the mounting tube, wherein the protective sleeve is provided with a second water inlet hole from top to bottom, and the mounting tube and the protective sleeve are clamped and fixed.
6. The water level measuring device of claim 1, wherein the control system comprises a communication module and a calculation module, and a switch is arranged on the communication module of the control system and is arranged in the lock box.
7. The water level measuring device according to claim 1, wherein the outer wall of the mounting pipe is provided with an arc-shaped boss, the iron block is provided with an arc-shaped groove matched with the arc-shaped boss, the arc-shaped boss is located inside the arc-shaped groove and limits the rotation of the iron block on the first guide post, an elastic conducting strip is uniformly arranged on the surface of the sliding connection part of the iron block and the first guide post in the circumferential direction, one end of the elastic conducting strip is fixed on the iron block, and the other end of the elastic conducting strip is in close contact with the surface of the first guide post.
8. The water level measuring device of claim 1, wherein the first guide post, the second guide post and the mounting tube are all PVC tubes.
9. The water level measuring device of claim 1, wherein the magnetic block is located inside the floating block, the magnetic block and the floating block form an annular whole, the diameter of an inner ring of the annular whole is larger than that of the second guide post, and the floating block is connected with the second guide post in a sliding mode.
10. The water level measuring device of claim 1, wherein the mounting pipes are assembled into several sections according to the depth of the actual water level, the ends of the adjacent mounting pipes are connected by screw threads, and after the ends of the adjacent mounting pipes are screwed, the projections of the adjacent first resistor, the first guide post and the second guide post are respectively overlapped in the axial direction of the mounting pipes, the screw thread connection part of the adjacent mounting pipes is provided with a sealing gasket, the mounting pipe at the lowermost end is provided with a sealing end, the upper ends of the first resistor and the conductive coating in the mounting pipes are respectively provided with a conductive spring, and the lower ends of the first resistor and the conductive coating are respectively provided with a contact conductive sheet.
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| CN202120916856.9U CN214748288U (en) | 2021-04-29 | 2021-04-29 | Water level measuring device |
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| CN202120916856.9U CN214748288U (en) | 2021-04-29 | 2021-04-29 | Water level measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323193A (en) * | 2022-03-14 | 2022-04-12 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Hydrogeological drilling water level monitoring device and method based on radio |
| CN114383685A (en) * | 2022-01-19 | 2022-04-22 | 秦皇岛华勘地质工程有限公司 | From electricity generation formula wireless transmission tide level appearance |
| CN114383685B (en) * | 2022-01-19 | 2024-05-14 | 秦皇岛华勘地质工程有限公司 | From power generation formula wireless transmission tide level appearance |
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2021
- 2021-04-29 CN CN202120916856.9U patent/CN214748288U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383685A (en) * | 2022-01-19 | 2022-04-22 | 秦皇岛华勘地质工程有限公司 | From electricity generation formula wireless transmission tide level appearance |
| CN114383685B (en) * | 2022-01-19 | 2024-05-14 | 秦皇岛华勘地质工程有限公司 | From power generation formula wireless transmission tide level appearance |
| CN114323193A (en) * | 2022-03-14 | 2022-04-12 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Hydrogeological drilling water level monitoring device and method based on radio |
| CN114323193B (en) * | 2022-03-14 | 2022-05-24 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Hydrogeological drilling water level monitoring device and method based on radio |
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