CN210051323U - Hydrostatic level buoy and hydrostatic level - Google Patents

Abstract

The utility model provides a hydrostatic level flotation pontoon and hydrostatic level. Wherein hydrostatic level buoy includes: the device comprises a cylinder, a plurality of balance caps and a connecting piece; the diameter of the barrel body of the float bowl is 3/4-4/5 of the inner diameter of the liquid storage barrel; the balance caps are uniformly arranged on the outer wall of the side part of the bottom of the cylinder body; the root of each balance cap is fixed on the outer wall of the side part of the bottom of the barrel, the top end of each balance cap extends out of the outer wall of the bottom of the barrel, and the size of a gap between the top end of each balance cap and the inner wall of the liquid storage barrel is a preset first distance; the connecting piece is arranged at the top of the barrel and is used for being in sliding connection with the bottom of the connecting rod; the top of the connecting rod is used for being fixedly connected with the bottom of a measuring rod of the displacement sensor. Use the utility model discloses can realize the improvement of hydrostatic level buoy measuring method and improve the degree of accuracy of measuring result.

Description

Hydrostatic level buoy and hydrostatic level

Technical Field

The application relates to the technical field of civil and architectural engineering and hydraulic and hydroelectric engineering detection, in particular to a buoy of a static level and a static level.

Background

A static force level gauge is a liquid level measuring instrument, which is an instrument that forms a measuring system according to the principle of a communicating vessel and measures the relative elevation change between two points or among multiple points and often belongs to a high-precision measuring instrument. The measurement accuracy depends on the measurement unit adopted by the static level gauge, the tank body structure of the level gauge, the processing accuracy of the buoy and the like. The method is mainly used for monitoring the uneven settlement and the relative inclination of each measuring point of large-scale buildings such as dams, nuclear power stations, high-rise buildings, foundation pits, tunnels, bridges and subways or large-scale storage tanks.

The hydrostatic level generally comprises stock solution bucket, flotation pontoon, connecting rod, electron measuring unit, electron storehouse fixing base, inlet and outlet (pipe), gas vent (pipe), signal transmission cable, liquid level observation pipe etc. (wherein, the liquid level observation pipe is for consulting hydrostatic level special, and the work spirit level of generally burying in the concrete then need not to set up). According to the difference of the number of the measuring points of the monitored object, a measuring system consisting of two or more static levels can be selected.

The working principle of static leveling systems generally works on the basis of the principle of a communicating vessel: several container liquid storage barrels with mutually communicated bottoms are filled with the same homogeneous liquid (generally pure water or antifreeze) through a water inlet and outlet (pipe), and the liquid level of each container in the communicating vessel is always kept on the same horizontal plane when the liquid does not flow under the atmosphere environment communicated with an air outlet (pipe); hydrostatic levels are simply measuring the change in internal liquid level to calculate the amount of change in the physical height difference between two points. Different hydrostatic levels only have different liquid level change measuring modes, or have different internal structures such as liquid level displacement transfer buoys and connecting rods, and the external containers have the same functions although the structures are different.

The original static level gauge measures the liquid level change by means of a physical scale, and the measurement belongs to large-deformation and low-precision measurement. In addition, various existing static leveling technologies basically integrate electronic, automatic and informatization technologies, and can realize full-automatic digital measurement of a system through special automatic monitoring equipment, even make implementation evaluation and early warning forecast, and make emergency supervision and control for supervision units.

The structure and the function of the prior static level gauge are basically similar, and an electronic measuring unit and a liquid level sensing buoy which are main core components are probably different, so that connecting rods and connections between the electronic measuring unit and the liquid level sensing buoy are different. Currently, the hydrostatic levels of the prior art can be divided, according to the operating principle of the electronic measuring unit, into: the static leveling instruments comprise vibrating string type, inductance type, photoelectric type, optical fiber type, grating type, magnetostriction type, scale type and the like, and each static leveling instrument is provided with a corresponding measuring buoy and a corresponding displacement transmission connecting rod.

Generally, prior art level pontoons can be essentially categorized as one of two characteristics: firstly, the density of the buoy is greater than that of liquid, the buoy is arranged in the tank body, the relative position is unchanged, and the liquid level is changed (namely the waterline of the buoy is changed), for example, the buoy is adopted by a vibrating wire type static level gauge; and secondly, the density of the buoy is smaller than that of liquid, the waterline of the buoy is unchanged, the position of the buoy can be changed along with the rise and fall of the liquid level, and most of the hydrostatic levels adopt the buoy. The following will mainly describe several major types of buoys and the prior art measurement techniques.

The vibrating wire type static level gauge uses a vibrating wire type force sensor, the vibrating wire type force sensor suspends a floating drum in a hanging mode through a connecting rod hook, and the overall relative density of the floating drum is greater than that of liquid. When the liquid level in the liquid storage barrel changes, namely the waterline of the float changes, the buoyancy borne by the float changes along with the change, so that the natural frequency of a vibrating wire in the vibrating wire type force sensor changes, the change of the buoyancy of the float can be calculated by measuring the vibration frequency of the vibrating wire, and further the height change of the liquid level can be calculated. On one hand, the measurement mode needs high measurement precision of the force sensor, and simultaneously needs high processing precision of the outer diameter of the float bowl and the inner diameter of the water storage barrel.

In addition to the vibrating wire type static level, the overall density of the float bowl of other static level instruments in the prior art is generally lower than that of liquid, so that the float bowl is really floating in the liquid level (the top surface of the float bowl is arranged outside the liquid level, and the bottom surface of the float bowl is completely arranged below the liquid level), the float bowl moves along with the rise and fall of the liquid level, but the waterline is not changed, and the relative change of the float bowl (namely the liquid level) and the electronic bin fixing seat can be sensed through an electronic measuring unit. The measuring mode no longer has high requirement on the outer diameter machining precision of the buoy. The prior art static levels such as photoelectric, inductive, magnetostrictive, etc. use such a buoy to transfer displacement.

For measuring units with different working principles, the matched buoy is suspended or floated out of the liquid level, and the structural form and the connection thereof are slightly different. Although various structural forms and corresponding connections are proposed in the prior art, certain disadvantages exist.

For example, in a hydrostatic level gauge as is common in the prior art, the float floats in the liquid surface due to its lower density than the liquid, and the float becomes the transmission medium for the resulting liquid level change. Although the processing precision requirement on the buoy is not high, when the diameter of the buoy is too large, namely the gap between the buoy and the water storage barrel is too small, large surface tension is easily caused, and thus measurement system errors are caused; when the diameter of the buoy is too small, the measurement accuracy of the test system is reduced, and meanwhile, the buoy is easy to be difficult to cut in the liquid storage barrel, so that the transmission rod is deviated, and system errors can be caused. Also, when the pontoon floats on the liquid surface, the pontoon may sway, tilt or deflect, eventually resulting in system errors.

In order to solve the problem that the float bowl shakes and deviates on the liquid surface on the premise of meeting certain measurement accuracy, the prior art provides the float bowl in a guide rod sleeve mode, the float bowl is sleeved on a guide rod, no friction exists between the float bowl and the guide rod, the float bowl can freely lift along with the liquid surface, a metal filament is assembled through a special connecting rod and is positioned in an optoelectronic bin, the electronic bin is provided with a device for emitting a cluster of parallel light, the filament forms a projection on a CCD sensor, therefore, the float bowl lifts and drives the filament to lift, and the relative displacement variation is measured through the CCD.

However, there are problems with the use of hydrostatic levels in the form of pontoons as described above:

the induction device in the static level needs to be transmitted through multiple mechanisms, and the error of a testing system is increased invisibly. In addition, there must be sufficient space between the float and the guide bar to ensure that there is no resistance to the float sliding up and down on the guide bar when the liquid level changes, or that the resistance does not affect the accuracy of the test. Furthermore, in this structure, the float can easily rotate around the guide rod, which in turn causes the metal filament fixed to the float connection rod to twist, thereby causing a test error. In addition, the buoy sleeved on the guide rod can be inclined due to the machining center of gravity and the eccentricity of the interference of the environment, so that the metal wire of the electronic bin is inclined, and certain test errors are caused. Therefore, the sleeve rod type buoy has extremely high requirements on the stability of the processing and testing environment, and the comprehensive testing error is not ideal. In addition, because the measuring unit is in a humid environment throughout the year, the service life of the CCD electronic component is very limited, and the CCD electronic component is also applied and fed back in numerous projects at home and abroad.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a hydrostatic level flotation pontoon and hydrostatic level appearance to can improve the degree of accuracy of measuring result.

The technical scheme of the utility model specifically be so realized:

a hydrostatic level buoy, comprising: the device comprises a cylinder, a plurality of balance caps and a connecting piece;

the diameter of the barrel body of the float bowl is 3/4-4/5 of the inner diameter of the liquid storage barrel;

the balance caps are uniformly arranged on the outer wall of the side part of the bottom of the cylinder body;

the root of each balance cap is fixed on the outer wall of the side part of the bottom of the barrel, the top end of each balance cap extends out of the outer wall of the bottom of the barrel, and the size of a gap between the top end of each balance cap and the inner wall of the liquid storage barrel is a preset first distance;

the connecting piece is arranged at the top of the barrel and is used for being in sliding connection with the bottom of the connecting rod; the top of the connecting rod is used for being fixedly connected with the bottom of a measuring rod of the displacement sensor.

Preferably, the connecting piece is a magnet fixed on the top of the cylinder.

Preferably, 3 balance caps are arranged at the bottom side of the buoy; the 3 balance caps are arranged at 120 degrees to each other.

Preferably, the top end of the balance cap is of a semi-sphere structure.

Preferably, the top of the cylinder body is provided with a horizontal smooth surface in the central area, and the top surfaces on the periphery are also provided with top surface water diversion slopes;

the bottom of the cylinder body is provided with a bottom surface draft slope.

Preferably, the slope of the top surface water diversion slope is 10%; the slope of the bottom draught slope is 10%.

The utility model discloses in still provide a hydrostatic level, this hydrostatic level includes: the hydrostatic level buoy, the sensor top cover, the sensor fixing plate, the sensor protection cylinder, the liquid storage barrel top cover, the displacement sensor and the connecting rod are arranged on the hydrostatic level buoy;

the liquid storage barrel is used for storing flowing liquid;

the top cover of the liquid storage barrel is arranged at the top of the liquid storage barrel;

the buoy of the static level gauge is arranged in the liquid storage barrel and floats on the liquid level in the liquid storage barrel;

the bottom of the sensor protection cylinder is fixedly connected with the top of the top cover of the liquid storage barrel, and a cavity is arranged in the sensor protection cylinder;

the sensor fixing plate is arranged at the top of the sensor protection barrel;

the upper end of the displacement sensor is fixedly connected with the sensor fixing plate, and the lower end of the displacement sensor is fixedly connected with the top cover of the liquid storage barrel; the bottom end of a measuring rod in the displacement sensor is fixedly connected with the top end of a connecting rod;

the bottom of connecting rod and the connecting piece sliding connection at the top of hydrostatic level flotation pontoon.

Preferably, a sensor top cover is further arranged at the top of the sensor fixing plate; the upper part of the sensor top cover can be also provided with a wire guide hole.

Preferably, a groove is further formed in the upper surface of the top cover of the liquid storage barrel, and a sealing ring is arranged in the groove.

Preferably, a groove is further formed in the upper surface of the sensor top cover, and a sealing ring is arranged in the groove.

As can be seen from the above, in the technical scheme of the utility model, because hydrostatic level flotation pontoon diameter is 3/4 ~ 4/5 of stock solution bucket internal diameter, and flotation pontoon bottom side has set up a plurality of balanced caps, consequently can avoid liquid surface tension, guarantee that the flotation pontoon can go up and down freely along with the liquid level, can adjust again and ensure flotation pontoon top surface level, can also ensure the position relatively stable of flotation pontoon in the stock solution bucket, even after the unusual vibration causes the liquid level flotation pontoon to rock, the flotation pontoon also can return initial condition smoothly, make the flotation pontoon be unlikely to rock all around, the amplitude of oscillation is too big, can not take place the off normal, twist reverse the slope, phenomenons such as card is died, and connecting rod and flotation pontoon can keep relative normal position unchangeable, thereby avoided because the off normal of the flotation pontoon, twist reverse the slope, the adverse effect to the test that card died etc.

In addition, in the technical scheme of the utility model, the buoy and the connecting rod are not connected in a consistent manner such as nut and hook, but are connected reliably through the magnetic force buoy and the connecting rod in a magnetic force adsorption manner, so that the buoy is not separated due to shaking and twisting of the buoy, the buoy is allowed to deviate slightly and slide a contact, and a test error or even an error caused by locking of an upper transmission rod due to fixation of the connecting rod and the buoy contact is avoided; moreover, the connecting mode of the buoy and the connecting rod is very simple, excessive displacement transmission devices are not needed, and the transmission displacement is simple and accurate.

Drawings

Fig. 1 is a side cross-sectional view of a hydrostatic level buoy in an embodiment of the present invention.

Fig. 2 is a schematic top view of the float bowl and the liquid storage barrel according to an embodiment of the present invention.

Fig. 3 is a schematic bottom view of the float and the liquid storage barrel according to an embodiment of the present invention.

Fig. 4 is a side sectional view of the float bowl and the liquid storage barrel according to an embodiment of the present invention.

Fig. 5 is a schematic view of the connection between the float and the liquid storage barrel according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a hydrostatic level in an embodiment of the present invention.

Fig. 7 is a schematic diagram of a sensor top cover in an embodiment of the invention.

Fig. 8 is a schematic diagram of a sensor fixing plate according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a sensor protection cartridge in an embodiment of the invention.

Fig. 10 is a schematic view of a liquid storage tank top cover according to an embodiment of the present invention.

Fig. 11 is a schematic view of a liquid storage barrel according to an embodiment of the present invention.

Detailed Description

In order to make the technical solution and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The technical scheme of the utility model, a hydrostatic level flotation pontoon is proposed.

Fig. 1 is a schematic structural view of a hydrostatic level buoy according to an embodiment of the present invention. As shown in fig. 1 to 4, a hydrostatic level buoy 10 according to an embodiment of the present invention includes: a barrel 11, a plurality of balance caps 12 and a connecting piece 15;

the diameter of the barrel body 11 of the buoy of the static level gauge is 3/4-4/5 of the inner diameter of the liquid storage barrel 20;

the balance caps 12 are uniformly arranged on the outer wall of the bottom side part of the cylinder body 11;

the root of each balance cap 12 is fixed on the outer wall of the bottom side part of the barrel body 11, the top end of each balance cap extends out of the outer wall of the bottom of the barrel body 11, and the size of a gap between the top end of each balance cap 12 and the inner wall of the liquid storage barrel 20 is a preset first distance;

the connecting piece 15 is arranged at the top of the barrel 11 and is used for being in sliding connection with the bottom of the connecting rod 51; the top of the connecting rod 51 is used for being fixedly connected with the bottom of a measuring rod 52 of the displacement sensor.

In the technical scheme of the utility model, the diameter of the cylinder body is 3/4-4/5 of the inner diameter of the liquid storage barrel, so that a certain gap can be ensured between the float bowl of the hydrostatic level and the liquid storage barrel, the adverse effect of the surface tension of the liquid level is avoided, and the gap is not too large to influence the resolution ratio of the test; and the barrel is provided with the balance cap, so that the position in the liquid storage barrel is relatively stable while the top surface of the buoy is horizontal, the phenomenon that the buoy shakes forwards, backwards, leftwards and rightwards and has overlarge amplitude is avoided, and the buoy can freely lift along with the liquid level.

The bottom of above-mentioned barrel has set up a plurality of balance caps, and the clearance size between the inner wall of the one end of each balance cap and liquid storage barrel is predetermined first distance, consequently can ensure that the displacement of rocking of flotation pontoon in the liquid storage barrel is controllable (the biggest off normal of flotation pontoon does not exceed first distance promptly), even after the unusual vibration causes the liquid level flotation pontoon to rock, the flotation pontoon also can return initial condition smoothly, make the flotation pontoon can not take place the off normal, twist reverse the slope, phenomenon such as card is died, thereby avoided because the off normal of flotation pontoon, twist reverse the slope, card is died and so on and cause the adverse effect to the test.

Furthermore, as an example, as shown in fig. 2 and 3, in a preferred embodiment of the present invention, the bottom side of the hydrostatic level buoy may be provided with 3 balance caps. At this time, the 3 balance caps may be disposed at 120 ° to each other.

Of course, in the technical scheme of the utility model, also can set up the balanced cap of other quantity in the bottom of hydrostatic level flotation pontoon, no longer describe herein.

In addition, as an example, in a preferred embodiment of the present invention, the first distance may be 1.5 to 2 mm. Of course, the first distance may be set to other suitable values according to the requirements of the practical application (for example, the machining precision of the inner diameter of the liquid storage barrel, etc.), and therefore, the description thereof is omitted.

In addition, as an example, in a preferred embodiment of the present invention, the root of the balance cap is fixed on the outer sidewall of the bottom of the cylinder in the form of a threaded screw. Of course, in the technical scheme of the utility model, also can use other suitable modes to fix the root of balance cap on the lateral wall of barrel bottom, no longer describe herein.

In addition, as an example, in a preferred embodiment of the present invention, the top end of the balance cap is a semi-spherical structure, so that the contact friction between the balance cap and the liquid storage barrel can be effectively reduced.

In addition, as an example, the balance cap can also be in other structural forms, and the contact friction between the top of the balance cap and the water storage barrel is as minimum as possible on the general principle; the balance cap material can be made of the same material as the barrel, can also be made of the same material as the liquid storage barrel, and can also be made of other materials.

In addition, as shown in fig. 1, in a preferred embodiment of the present invention, the top of the cylinder is provided with a horizontal smooth surface in the central area, and the top surface of the periphery is further provided with a top surface water diversion slope 13. Moreover, the gradient of the top surface water diversion slope can be preset according to the requirements of practical application conditions. For example, the slope of the top surface waterside slope may be 10%. Because the top surface water diversion slope is arranged at the top of the cylinder body, when the liquid level of the liquid storage barrel shakes to cause liquid to splash to the top of the floating cylinder, the liquid can freely slide along the top surface water diversion slope, and the liquid is prevented from being retained at the top of the floating cylinder to influence the total liquid amount of the system.

In addition, as shown in fig. 1, in a preferred embodiment of the present invention, the bottom of the cylinder is provided with a bottom draft slope 14. Moreover, the gradient of the bottom draught slope can be preset according to the requirements of practical application conditions. For example, the slope of the floor draft slope may be 10%. Because the bottom surface draft slope is arranged at the bottom of the cylinder body, when the liquid level of the liquid storage barrel shakes, air remained at the bottom of the floating barrel can be freely discharged, and the total amount of liquid of the system is prevented from being influenced.

In addition, in the technical scheme of the utility model, can realize foretell connecting piece through multiple concrete implementation form. The technical solution of the present invention will be described below by taking one of the specific implementation modes as an example.

For example, in a preferred embodiment of the present invention, the connecting member may be a magnet fixed to the top of the cylinder. Thus, the bottom of the connecting rod 51 can be connected to the top of the pontoon by the magnetic force of the magnet, as shown in fig. 5. Wherein, the top of the connecting rod 51 is fixedly connected with the bottom of the measuring rod 52 of the displacement sensor.

Because in the technical scheme of the utility model, foretell magnet can be one and inlays the smooth platelet at barrel top surface dead center, therefore the bottom of connecting rod can be through the magnetism of this magnet and carry out the slip of small margin on the top surface of magnet in the horizontal direction to make connecting rod 51's bottom can realize sliding connection with this magnet.

In addition, as an example, in a preferred embodiment of the present invention, the float bowl and the balance cap may be made of light materials such as PVC, and may be made of other materials. The float can be solid or hollow, and its whole density is lower than that of liquid so as to ensure that the float can float on the liquid surface, its top surface is completely exposed from the liquid surface, and its bottom surface is completely immersed in the liquid surface. Typically, the design draft of the spar is preferably near the mid-height of the spar.

In addition, in the technical scheme of the utility model, flotation pontoon and balance cap can be split type. In order to ensure the integral balance after assembly, the gravity center is not inclined, the top surface center is horizontal (the top surface of the magnet at the center of the float bowl is horizontal), the assembly can be assembled in place in a workshop, the deviation effect of the assembly gravity center is tested, the matching effect of the assembly gravity center and the corresponding water storage barrel is tested, and whether the gap between the balance cap and the inner barrel wall is too large or too small or not needs to be corrected if necessary.

Additionally, the utility model discloses an among the technical scheme, the flotation pontoon also can be cast with balanced cap whole mould, and the shape and the form of balanced cap also can be diversified, strives for succinctly for suitable, does not do the restriction here.

Furthermore, the technical scheme of the utility model wherein, a hydrostatic level has still been provided.

Fig. 6 is a schematic structural diagram of a hydrostatic level in an embodiment of the present invention. As shown in fig. 6 to 11, the hydrostatic level in the embodiment of the present invention includes: the hydrostatic level buoy 10, the sensor top cover 61, the sensor fixing plate 62, the sensor protection cylinder 63, the liquid storage barrel 20, the liquid storage barrel top cover 64, the Linear Variable Differential Transformer (LVDT) displacement sensor 65 and the connecting rod 51;

the reservoir 20 is used for storing a flowing liquid (e.g., water); the liquid storage barrel top cover 64 is arranged at the top of the liquid storage barrel 20. The technical scheme of the utility model in, this stock solution bucket top cap 64 forms sealed container jointly with stock solution bucket 20, and this stock solution bucket top cap 64 can be used for bearing the upper portion load to fixed LVDT displacement sensor 65.

The hydrostatic level buoy 10 is arranged in the liquid storage barrel 20 and floats on the liquid level in the liquid storage barrel 20.

The bottom of the sensor protection cylinder 63 is fixedly connected with the top of the liquid storage barrel top cover 64, and a cavity (also called an electronic bin fixing seat) is arranged in the sensor protection cylinder 63. In the technical scheme of the utility model, the cavity in the sensor protection cylinder 63 can provide a proper space for installing and measuring the LVDT displacement sensor 65; meanwhile, the sensor protection cylinder 63 can also isolate the LVDT displacement sensor 65 from the external environment, provide a suitable working environment for the LVDT displacement sensor 65 and protect the LVDT displacement sensor 65.

The sensor fixing plate 62 is arranged at the top of the sensor protection barrel 63; in the technical solution of the present invention, the sensor fixing plate 62 can be used to fix the upper end of the LVDT displacement sensor 65; in addition, the sensor fixing plate 62 can protect the sensor protection cylinder 63 and prevent the sensor protection cylinder 63 from being mechanically damaged.

The upper end of the linear variable differential transformer displacement sensor 65 is fixedly connected with the sensor fixing plate 62, and the lower end is fixedly connected with the liquid storage barrel top cover 64; the bottom end of the measuring rod in the linear variable differential transformer displacement sensor 65 is fixedly connected with the top end of the connecting rod 51;

the bottom end of connecting rod 51 is slidably connected to connecting member 15 at the top of buoy 10.

In the technical scheme of the utility model, the measuring rod 52 of the LVDT displacement sensor is fixedly connected with the connecting rod 51, and the connecting rod is connected with the connecting piece at the top of the buoy in a sliding way, so that when the liquid level in the liquid storage barrel changes, the buoy can also lift along with the lifting of the liquid level; and the lift of flotation pontoon will be sensed by LVDT displacement sensor through the measuring staff of being connected with the connecting rod, so LVDT displacement sensor's reading also can change thereupon to can detect the lift change of the liquid level in the liquid storage bucket.

In addition, as shown in fig. 11, in a preferred embodiment of the present invention, the bottom of the liquid storage barrel may further be provided with a support connecting rod 31, a liquid through port 32, and a vent 33.

The support connecting rod can be used for supporting and fixing the liquid storage barrel, and can level the static level gauge by means of instruments such as a leveling rod and the like; the liquid passing port can be used for water feeding and discharging, water filling and water discharging are carried out on the liquid storage barrel, and liquid level in the system can be guided to be readjusted when the measuring point position is settled, so that the water level is always at the same height; the vent may maintain a constant pressure above the liquid level in all containers and is open to the atmosphere. In addition, in actual use, the vent hole may be blocked with a preset stopper (e.g., a cap such as a gas-permeable rubber stopper) to prevent entry of foreign substances.

In addition, as an example, in a preferred embodiment of the present invention, the support connecting rod includes: three screw rods; the bottom of the liquid storage barrel is provided with three mounting holes corresponding to the three screw rods respectively; the three mounting holes are uniformly distributed at the bottom of the liquid storage barrel; the top of each screw rod is fixedly connected with the corresponding mounting hole. Therefore, the three screws can be used as the base of the liquid storage barrel.

In addition, as an example, in a preferred embodiment of the present invention, a sensor top cover is further disposed on the top of the sensor fixing plate. The technical scheme of the utility model, this sensor top cap can seal the hydrostatic level appearance, bears the top surface load to with load homodisperse.

In addition, as an example, in a preferred embodiment of the present invention, the upper portion of the sensor top cover may further be provided with a wire guide hole for guiding the cable of the LVDT displacement sensor out of the sensor top cover for signal measurement, so that the LVDT displacement sensor may transmit data through the cable.

In addition, as an example, in the preferred embodiment of the present invention, a groove is further disposed on the upper surface of the top cover of the liquid storage barrel, and a sealing ring is disposed in the groove, so that the liquid storage barrel forms an independent sealing space, and external impurities such as slurry can be prevented from flowing into the liquid storage barrel through the installation gap during construction.

In addition, as an example, in a preferred embodiment of the present invention, a groove is further disposed on the upper surface of the sensor top cap, and a sealing ring is disposed in the groove, so that the sensor protection cylinder is connected with the sensor top cap and sealed, and slurry does not leak.

In summary, in the technical solution of the present invention, the diameter of the cylinder of the float of the hydrostatic level is 3/4-4/5 of the inner diameter of the liquid storage barrel, and the bottom side of the cylinder of the float is provided with a plurality of balance caps, so as to avoid the liquid surface tension, ensure the float to freely lift along with the liquid level, adjust and ensure the top surface level of the float, ensure the position of the float in the liquid storage barrel to be relatively stable, ensure the shaking displacement of the float in the liquid storage barrel to be controllable, even after the liquid level float shakes due to abnormal vibration, the float can smoothly return to the initial state, so that the float does not shake back and forth or left and right, the swing amplitude is too large, the phenomena of deviation, torsional inclination, jamming and the like do not occur, and the connecting rod and the float can keep unchanged relative to the original position, thereby avoiding the adverse effect on the test due to the deviation, torsional inclination, jamming and the like of the float, therefore, the improvement of the measuring method of the static leveling buoy is realized, and the accuracy of the measuring result is improved.

In addition, in the technical scheme of the utility model, the buoy and the connecting rod are not connected in a consistent manner such as nut and hook, but are connected reliably through the magnetic force buoy and the connecting rod in a magnetic force adsorption manner, so that the buoy is not separated due to shaking and twisting of the buoy, the buoy is allowed to deviate slightly and slide a contact, and a test error or even an error caused by locking of an upper transmission rod due to fixation of the connecting rod and the buoy contact is avoided; moreover, the connecting mode of the buoy and the connecting rod is very simple, excessive displacement transmission devices are not needed, and the transmission displacement is simple and accurate.

Furthermore, the utility model discloses an among the hydrostatic level not only used foretell flotation pontoon, flotation pontoon and the connecting rod be connected, but also used LVDT displacement sensor, consequently had frictionless measurement, unlimited mechanical life, unlimited resolution ratio, zero position repeatability, axial suppression, sturdy and durable, environmental suitability a lot of advantages such as strong.

The utility model has simple structure, practicality and convenient installation; the static force level has the advantages of low cost, reliable quality, wide application range, long service life, simple operation, simple assembly, high sensitivity, high precision (lower system error), high stability and safe and reliable quality.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A hydrostatic level buoy, characterized in that the hydrostatic level buoy comprises: the device comprises a cylinder, a plurality of balance caps and a connecting piece;

the diameter of the cylinder body is 3/4-4/5 of the inner diameter of the liquid storage barrel;

the balance caps are uniformly arranged on the outer wall of the side part of the bottom of the cylinder body;

the root of each balance cap is fixed on the outer wall of the side part of the bottom of the barrel, the top end of each balance cap extends out of the outer wall of the bottom of the barrel, and the size of a gap between the top end of each balance cap and the inner wall of the liquid storage barrel is a preset first distance;

the connecting piece is arranged at the top of the barrel and is used for being in sliding connection with the bottom of the connecting rod; the top of the connecting rod is used for being fixedly connected with the bottom of a measuring rod of the displacement sensor.

2. A hydrostatic level buoy according to claim 1 wherein:

the connecting piece is a magnet fixed on the top of the cylinder body.

3. A hydrostatic level buoy according to claim 1 wherein:

the bottom side of the buoy is provided with 3 balance caps; the 3 balance caps are arranged at 120 degrees to each other.

4. A hydrostatic level buoy according to claim 1 wherein:

the top end of the balance cap is of a semi-sphere structure.

5. A hydrostatic level buoy according to claim 1 wherein:

the top of the cylinder body is provided with a horizontal smooth surface in the central area, and the top surfaces at the periphery are also provided with top surface water diversion slopes;

the bottom of the cylinder body is provided with a bottom surface draft slope.

6. A hydrostatic level buoy according to claim 5 wherein:

the slope of the top surface water diversion slope is 10 percent;

the slope of the bottom draught slope is 10%.

7. A hydrostatic level, comprising: the hydrostatic level buoy, the sensor top cover, the sensor fixing plate, the sensor protection cylinder, the liquid storage barrel top cover, the displacement sensor and the connecting rod of any one of claims 1 to 6;

the liquid storage barrel is used for storing flowing liquid;

the top cover of the liquid storage barrel is arranged at the top of the liquid storage barrel;

the buoy of the static level gauge is arranged in the liquid storage barrel and floats on the liquid level in the liquid storage barrel;

the bottom of the sensor protection cylinder is fixedly connected with the top of the top cover of the liquid storage barrel, and a cavity is arranged in the sensor protection cylinder;

the sensor fixing plate is arranged at the top of the sensor protection barrel;

the upper end of the displacement sensor is fixedly connected with the sensor fixing plate, and the lower end of the displacement sensor is fixedly connected with the top cover of the liquid storage barrel; the bottom end of a measuring rod in the displacement sensor is fixedly connected with the top end of a connecting rod;

the bottom of connecting rod and the connecting piece sliding connection at the top of hydrostatic level flotation pontoon.

8. A hydrostatic level according to claim 7, wherein:

a sensor top cover is also arranged at the top of the sensor fixing plate; the upper part of the sensor top cover can be also provided with a wire guide hole.

9. A hydrostatic level according to claim 7, wherein:

the upper surface of the liquid storage barrel top cover is also provided with a groove, and a sealing ring is arranged in the groove.

10. A hydrostatic level according to claim 7, wherein:

a groove is further formed in the upper surface of the sensor top cover, and a sealing ring is arranged in the groove.

Images