CN108593044B - Liquid level measuring device for hydraulic engineering - Google Patents
Liquid level measuring device for hydraulic engineering Download PDFInfo
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- CN108593044B CN108593044B CN201810502797.3A CN201810502797A CN108593044B CN 108593044 B CN108593044 B CN 108593044B CN 201810502797 A CN201810502797 A CN 201810502797A CN 108593044 B CN108593044 B CN 108593044B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
Abstract
The liquid level measuring device for the hydraulic engineering is characterized in that one side of a liquid level measuring barrel body is provided with a mounting bracket, the other side of the liquid level measuring barrel body is provided with a power generation mechanism, an induction bracket is arranged on the liquid level measuring barrel body, and an induction floating ball is sleeved on the induction bracket; the upper end cover is arranged at the top of the liquid level measuring barrel body, the liquid level measuring barrel body is internally provided with a stable cover barrel, one side of the upper end cover is provided with an end cover air passage used for communicating the inside and the outside of the liquid level measuring barrel body along the vertical direction, the upper end cover positioned at the outlet of the end cover air passage is provided with an electromagnetic proportion air release valve used for controlling air release amount, and the wind speed measuring instrument is arranged at the top of the upper end cover; weighing sensor sets up the gyration middle part at the upper end cover, and the weighing sensor bottom is connected with the metering rod through weighing pole or stay cord of weighing, provides two kinds of measurement water level modes, and measurement accuracy is high, effectively reduces artifical reading error, and realizes long-range automatic acquisition data, and then reduces artifical intensity of labour.
Description
Technical Field
The invention relates to the technical field of hydraulic parameter measurement, in particular to a liquid level measuring device for hydraulic engineering.
Background
In irrigation works in irrigated areas, the water capacity of the flowing water weir is related to downstream irrigation water, and the dispatching relationship of the flowing water weir is related to environment, agriculture and economic benefits, so that the flowing water weir is required to accurately meter the water capacity, the precision of the water level meter is very critical, and the existing water level testing equipment is not enough: the measurement precision is not high, the water level range is limited, the reading deviation is large, the precision error is increased easily after long-term use, the reading is inconvenient, the labor is consumed, and the interference of human factors is large; meanwhile, the flowing weir is subjected to rapid turbulence of water flow, so that the impact of the water flow is large, and the measuring work is difficult; therefore, the development of a device capable of reducing the labor intensity and improving the measurement precision has become an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a liquid level measuring device for hydraulic engineering to solve the above-mentioned disadvantages in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
the liquid level measuring device for the hydraulic engineering comprises a liquid level measuring barrel body, wherein one side of the liquid level measuring barrel body is provided with an installation support for installing the liquid level measuring barrel body on a liquid level point to be measured, the other side of the liquid level measuring barrel body is provided with a power generation mechanism for performing hydroelectric power generation, the power generation mechanism supplies power to a data processor, a weighing sensor, a wind speed measuring instrument and an electromagnetic proportional air release valve, an induction support is arranged on the liquid level measuring barrel body, and an induction floating ball is sleeved on the induction support; the upper end cover is arranged at the top of the liquid level measuring barrel body, a plurality of end cover annular grooves for installing and stabilizing the top of the cover barrel are arranged at the upper part of an inner cavity of the upper end cover, an end cover air passage for communicating the inside and the outside of the liquid level measuring barrel body is arranged on one side of the upper end cover along the vertical direction, an electromagnetic proportion air release valve for controlling air release is arranged on the upper end cover positioned at the outlet of the end cover air passage, and the wind speed measuring instrument is arranged at; weighing sensor sets up the gyration middle part at the upper end cover, and the weighing sensor bottom is connected with the metering rod through weighing pole or weighing stay cord, when weighing sensor is connected with the metering rod through weighing stay cord, weighing sensor is used for measuring the pulling force of metering rod weighing sensor, when rivers slowly rise, the inside and outside water level of level measurement bucket keeps unanimous, along with the water level slowly rises, under the effect of buoyancy, the metering rod come-up is connected with weighing sensor, the pulling force that weighing sensor receives slowly reduces, calculate the size of water level value according to reading conversion, when the rivers weir has water, weighing sensor's measured value and water level relation are:
W1-W2＝Wwater (W)(1)
W1Measured value of a load cell in the absence of water, W2Measured value of a load cell in the presence of water, WWater (W)The weight of the discharged water for the metering rod;
s is the cross-sectional area of the metering rod, pWater (W)Is the density of water, h is the water level at the time of measurement;
when weighing sensor is connected with the metering rod through the weighing pole, weighing sensor is used for measuring the holding power of metering rod symmetry retransmission sensor, the weighing sensor measured value when anhydrous sets up to zero, when rivers slowly rise, the inside and outside water level of level measurement barrel keeps unanimous, along with the water level slowly rises, under the effect of buoyancy, the metering rod come-up is connected with weighing sensor, the pressure that weighing sensor receives increases gradually, calculate the size of water level value according to the reading conversion, when the rivers weir has water, weighing sensor's measured value and water level relation are:
Wwater (W)The weight of the water discharged from the metering rod, S is the cross-sectional area of the metering rod, rhoWater (W)Is the density of water, h is the water level at the time of measurement;
h is the water level during measurement, in formula (2), the weighing sensor is subjected to tension during measurement, and in formula (3), the weighing sensor is subjected to pressure during measurement;
the bottom in the liquid level measuring barrel is provided with a lower bracket, the upper part of the lower bracket is provided with a plurality of bracket ring grooves for installing the bottom of a stable cover barrel, a plurality of bracket channels for water overflowing are uniformly distributed on the lower bracket along the circumferential direction, the stable cover barrel is configured according to the size of the model selection diameter of a metering rod, a plurality of communication holes for water through flow are arranged on the stable cover barrel, the lower bracket is positioned above a base, the base is arranged at the bottom of the liquid level measuring barrel, a base ring cavity for assembling and disassembling a water inlet mechanism and a water outlet mechanism is arranged in the base, a base filtering cavity is arranged outside the base, a base buffering cavity for installing a buffering mechanism is arranged in the base, the base filtering cavity is communicated with the base buffering cavity, a base water inlet channel and a base water inlet jack for installing the water inlet mechanism are arranged on one side of the base, a base water outlet channel and a base water outlet jack for, the base buffer cavity is communicated with the base water inlet jack through a base water inlet channel, and is communicated with the base water outlet jack through a base water outlet channel;
in the buffer mechanism, a buffer valve body is symmetrical about the buffer valve body, a buffer right transverse channel and a buffer right vertical channel which can run through the buffer valve body from top to bottom are arranged on the right side in the buffer valve body, one end of the buffer right transverse channel is communicated with the outside, the other end of the buffer right transverse channel is communicated with the buffer right vertical channel, a buffer left vertical channel and a buffer left transverse channel which can run through the buffer valve body from top to bottom are arranged on the left side in the buffer valve body, one end of the buffer left transverse channel is communicated with the outside, and the other end of the buffer left transverse channel is communicated with; the buffer valve body is provided with a through hole for installing a buffer adjusting rod along the self rotation center, a buffer valve for adjusting the opening degrees of the buffer right vertical channel and the buffer left vertical channel is sleeved at one end of the buffer adjusting rod, the lower end of the buffer adjusting rod is provided with a buffer tightening nut for locking the relative opening position of the buffer valve, and after the opening degrees of the buffer right vertical channel and the buffer left vertical channel are adjusted as required, the relative opening position of the buffer valve is locked by tightening the buffer tightening nut;
in the water inlet mechanism, a water inlet axial channel, a water inlet sealing line, a water inlet valve body cavity and a water inlet mounting hole for mounting a water inlet valve core are sequentially arranged in the water inlet valve body from right to left, water inlet radial channels communicated with the water inlet valve body cavity are uniformly distributed in the circumferential direction of the water inlet valve body, water inlet valve core supporting bodies which enable the water inlet valve core to be in line contact with the water inlet mounting hole are uniformly distributed in the circumferential direction of the water inlet valve body, one end of a water inlet negative pressure spring in a pre-compression state is in contact with the water inlet axial channel, the other end of the water inlet negative pressure spring is in contact with one end of the water inlet valve core, the other end of the water inlet valve core is in contact with one end of a water inlet adjusting spring, the other end of the water inlet adjusting spring is in contact with a water inlet adjusting rod, the water inlet adjusting rod is connected with the water inlet, the conical surface of the water inlet valve core is in contact seal with a water inlet seal line, the precompression force of a preset water inlet adjusting spring is added to the friction force of the water inlet valve core relative to a water inlet mounting hole and is equal to the precompression force of a water inlet negative pressure spring, so that the opening pressure of the water inlet valve core is zero, the water inlet valve core is opened under the action of the internal and external pressure difference of the liquid level measuring barrel, water enters the liquid level measuring barrel from a water inlet axial channel through a water inlet valve body cavity and a water inlet radial channel, a water inlet clamping nut is arranged on the water inlet adjusting rod, and after the water inlet adjusting spring is adjusted, the adjusting value is locked by clamping the water inlet clamping nut;
in the water outlet mechanism, a water outlet axial channel, a water outlet sealing line, a water outlet valve body cavity and a water outlet mounting hole for mounting a water outlet valve core are sequentially arranged in the water outlet valve body from left to right, water outlet radial channels communicated with the water outlet valve body cavity are uniformly distributed in the circumferential direction of the water outlet valve body, the water outlet valve core is connected with a water outlet valve core bracket, the water outlet valve core bracket is matched and mounted with the water outlet valve body through the water outlet mounting hole, water outlet valve core support bodies which enable the water outlet valve core bracket to be in line contact with the water outlet mounting hole are uniformly distributed in the circumferential direction of the water outlet valve core bracket, one end of a water outlet negative pressure spring in a pre-compression state is contacted with the water outlet axial channel, the other end of the water outlet negative pressure spring is contacted with one end of the water outlet valve core, one end of the water outlet valve core bracket is contacted with one end, the matching amount of the water outlet adjusting rod and the water outlet valve body is adjusted through the rotation of the water outlet adjusting inner hexagon, the precompression amount of the water outlet adjusting spring is further adjusted, the conical surface of the water outlet valve core is in contact seal with a water outlet seal line, the precompression force of the water outlet adjusting spring is preset to be equal to the friction force of the water outlet valve core support relative to the water outlet mounting hole and the precompression force of the water outlet negative pressure spring, so that the opening pressure of the water outlet valve core is zero, the water outlet valve core is opened under the action of the pressure difference between the inside and the outside of the liquid level measuring barrel, water in the liquid level measuring barrel enters from a water outlet radial channel and flows out through a water outlet valve body cavity and a water outlet axial channel, a water outlet clamping nut is arranged on the water outlet adjusting rod, after the water outlet adjusting spring is adjusted, an outer hexagon is arranged at one end of the water outlet valve core, an inner hexagon is arranged on the water outlet valve core support, and the water outlet valve core are respectively arranged in the, the water outlet valve core bracket is rotated through an inner hexagon and is matched with the water outlet valve core;
the weighing sensor, the induction bracket and the electromagnetic proportional air release valve are respectively connected with the data processor.
In the invention, the induction bracket is positioned in the vertical direction of the connecting line of the mounting bracket and the power generation mechanism.
In the invention, the upper part of the upper end cover is provided with an end cover mounting hole for mounting and dismounting the upper end cover.
In the invention, the bottom of the base is provided with a base mounting hole for dismounting the base.
In the invention, a filter screen is arranged in the filtering cavity of the base.
In the invention, the periphery of the upper part of the buffer valve body is provided with buffer mounting threads, and the buffer mechanism is arranged in the buffer cavity of the base in a matching way through the buffer mounting threads.
In the invention, one side of the buffer valve is provided with a buffer retainer ring for limiting the axial direction of the buffer valve, the buffer retainer ring is arranged on the buffer adjusting rod, and the other side of the buffer valve is attached to the upper end face of the buffer valve body.
In the invention, a check ring for the water inlet hole is arranged in the water inlet axial channel, and one end of the water inlet negative pressure spring in a pre-compression state is in contact with the check ring for the water inlet hole.
In the invention, a check ring for the water outlet hole is arranged in the water outlet axial channel, and one end of the water outlet negative pressure spring in a pre-compression state is in contact with the check ring for the water outlet hole.
In the invention, the data processor is connected with the remote upper computer to realize hydrologic intelligent monitoring of local areas and even national level areas in real time, and a decision basis is provided for guiding hydraulic engineering construction, water use scheduling and flood prevention and waterlogging prevention through processing accumulated data.
Has the advantages that: the liquid level measuring barrel body provides two measuring modes, one mode is that a weighing sensor is connected with a measuring rod through a weighing rod and used for measuring the tensile force of a measuring rod symmetrical weighing sensor, the other mode is that the weighing sensor is connected with the measuring rod through a weighing pull rope and used for measuring the supporting force of the measuring rod symmetrical weighing sensor, the specific water level is converted according to the buoyancy action of water and the measured value of the weighing sensor, the measuring precision is high, the manual reading error is effectively reduced, and a buffer mechanism is arranged between a water inlet mechanism and a water outlet mechanism, so that the impact caused by a large water level difference is avoided; meanwhile, the water level and fluctuation measuring mechanism is connected with a remote upper computer, so that remote automatic data acquisition is realized, the labor intensity of workers is effectively reduced, the received data is comprehensively processed by the water level and fluctuation measuring mechanism and then is transmitted to the remote upper computer, so that the hydrological intelligent monitoring of local areas and even national level areas is realized in real time, and a decision basis is provided for guiding hydraulic engineering construction, water dispatching and flood prevention and waterlogging prevention through the processing of accumulated data.
Drawings
FIG. 1 is a front view of a water level and fluctuation measuring mechanism in a preferred embodiment of the present invention.
Fig. 2 is a schematic view of a base structure in a preferred embodiment of the invention.
FIG. 3 is a front view of a cushioning mechanism in a preferred embodiment of the present invention.
FIG. 4 is a top view of a cushioning mechanism in a preferred embodiment of the present invention.
Fig. 5 is a schematic structural view of a water outlet mechanism in a preferred embodiment of the invention.
Fig. 6 is a schematic structural view of a water inlet mechanism in a preferred embodiment of the invention.
Fig. 7 is a schematic structural view of a water inlet valve core in a preferred embodiment of the invention.
Fig. 8 is a schematic structural view of a water outlet valve core support in a preferred embodiment of the invention.
FIG. 9 is a right side view of the water level and fluctuation measuring mechanism in the preferred embodiment of the present invention.
FIG. 10 is a top view of the water level and fluctuation measuring mechanism in the preferred embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to the figures 1-10, the liquid level measuring device for the water conservancy project comprises a data processor 1-1, an upper end cover 1-2, an end cover mounting hole 1-2-1, an end cover annular groove 1-2-2, an end cover air passage 1-2-3, an electricity storage mechanism 1-3, a lower support 1-4, a support annular groove 1-4-1, a support channel 1-4-2, a liquid level measuring barrel 1-5, a water inlet mechanism 1-6, a water inlet adjusting rod 1-6-1, a water inlet tightening nut 1-6-2, a water inlet adjusting spring 1-6-3, a water inlet valve core 1-6-4, a water inlet negative pressure spring 1-6-5, a water inlet check ring 1-6-6, a water inlet valve body 1-6-7, A water inlet valve core support M1, a water inlet adjusting inner hexagon M2, a water inlet mounting hole M3, a water inlet radial channel M4, a water inlet valve body end surface M5, a water inlet axial channel M6, a water inlet mounting thread M7, a water inlet sealing line M8, a water inlet valve body cavity M9, a base 1-7, a base mounting hole 1-7-1, a base filtering cavity 1-7-2, a base ring cavity 1-7-3, a base water inlet jack 1-7-4, a base water inlet channel 1-7-5, a base buffering cavity 1-7-6, a base water outlet channel 1-7-7, a base water outlet jack 1-7-8, a buffering mechanism 1-8-1, a buffering adjusting rod 1-8-2, a buffering valve 1-8-3, 1-8-4 parts of buffer retainer ring, 1-8-5 parts of buffer tightening nut, L1 parts of buffer outer hexagon, L2 parts of buffer right transverse channel, L3 parts of buffer right vertical channel, L4 parts of buffer left vertical channel, L5 parts of buffer left transverse channel, L6 parts of buffer mounting thread, 1-9 parts of water outlet mechanism, 1-9-1 parts of water outlet adjusting rod, 1-9-2 parts of water outlet tightening nut, 1-9-3 parts of water outlet adjusting spring, 1-9-4 parts of water outlet valve core, 1-9-5 parts of water outlet negative pressure spring, 1-9-6 parts of retainer ring for water outlet hole, 1-9-7 parts of water outlet valve body, 1-9-8 parts of water outlet valve core bracket, N1 parts of water outlet valve core bracket, N2 parts of water outlet adjusting inner hexagon, N3 parts of water outlet mounting hole, N4 parts of water outlet radial channel, N5 parts of water outlet valve surface, N6 parts of water outlet axial channel, N, The device comprises a water outlet mounting thread N7, a water outlet sealing line N8, a water outlet valve body-shaped cavity N9, a water outlet support inner hexagonal N10, a weighing sensor 1-10, a weighing rod 1-11, a weighing pull rope 1-12, a wind speed measuring instrument 1-13, an electromagnetic proportion deflation valve 1-14, a metering rod 1-15, a stable cover barrel 1-16, a communication hole 1-16-1, a mounting support 1-17, a power generation mechanism 1-18, a filter screen 1-19, an induction support 1-20 and an induction floating ball 1-21;
one side of the liquid level measuring barrel body 1-5 is provided with an installation support 1-17 used for installing the liquid level measuring barrel body 1-5 on a liquid position point to be measured, the other side (namely the opposite direction of the installation support 1-17) of the liquid level measuring barrel body 1-5 is provided with a power generation mechanism 1-18, the power generation mechanism 1-18 is used for hydroelectric power generation, and stores electric energy in an electric storage mechanism 1-3 for a data processor 1-1, a weighing sensor 1-10, a wind speed measuring instrument 1-13 and an electromagnetic proportion deflation valve 1-14, an induction support 1-20 is arranged on the liquid level measuring barrel body 1-5, the induction support 1-20 is positioned in the vertical direction of the connecting line of the installation support 1-17 and the power generation mechanism 1-18, and an induction floating ball 1-21 is sleeved on the induction support 1-20, the induction floating ball 1-21 can float up and down along the axial direction of the induction support 1-20 under the action of the external force of water fluctuation, and the induction support 1-20 induces the floating of the induction floating ball 1-21 and transmits data to the data processor 1-1 for monitoring the fluctuation quantity of the passing fluid in real time; the upper end cover 1-2 is connected with the liquid level measuring barrel body 1-5 through threads and is arranged at the top of the liquid level measuring barrel body 1-5, the upper part of the upper end cover 1-2 is provided with an end cover mounting hole 1-2-1 for dismounting the upper end cover 1-2, the upper part of the inner cavity of the upper end cover 1-2 is provided with a plurality of end cover annular grooves 1-2-2 for mounting and limiting a stable cover barrel 1-16, one side of the upper end cover 1-2 is provided with an end cover air flue 1-2-3 along the vertical direction for communicating the inside and the outside of the liquid level measuring barrel body 1-5, the upper end cover 1-2 is provided with a wind speed measuring instrument 1-13 for measuring the real-time wind speed of a monitoring point, and the upper end cover 1-2 at the outlet of the end cover air flue 1-, the weighing sensor 1-10 is arranged in the rotary middle of the upper end cover 1-2 through threaded connection, the weighing sensor 1-10 is connected with the metering rod 1-15 through a weighing rod 1-11 or a weighing pull rope 1-12, when the weighing sensor 1-10 is connected with the metering rod 1-15 through the weighing pull rope 1-12, the weighing sensor 1-10 is used for measuring the tension of the weighing sensor 1-15 symmetrical weighing sensor 1-10, when the water flow slowly rises, the water level inside and outside the liquid level measuring barrel body 1-5 keeps consistent, the water level slowly rises, under the action of buoyancy, the metering rod 1-15 floats upwards to be connected with the weighing sensor 1-10, the tension borne by the weighing sensor 1-10 is slowly reduced, the water level value is calculated according to the reading conversion, when water exists in the flowing weir, the relationship between the measured value of the weighing sensor 1-10 and the water level is as follows:
W1-W2＝Wwater (W)(1)
W1Measured value of the load cell 1-10 in the absence of water, W2Measured values of load cells 1-10 in the presence of water, WWater (W)The weight of the discharged water of the measuring rod is 1-15;
s is the cross-sectional area, rho, of the metering rod 1-15Water (W)Is the density of water, h is the water level at the time of measurement;
when the weighing sensor 1-10 is connected with the measuring rod 1-15 through the weighing rod 1-11, the weighing sensor 1-10 is used for measuring the supporting force of the weighing sensor 1-15 of the measuring rod 1-15, the measured value of the weighing sensor 1-10 in the absence of water is set to be zero, when water flow slowly rises, the water levels inside and outside the liquid level measuring barrel body 1-5 are kept consistent, along with the slow rise of the water level, the weighing rod 1-15 floats upwards to be connected with the weighing sensor 1-10 under the action of buoyancy, the pressure borne by the weighing sensor 1-10 is gradually increased, the water level value is calculated according to the reading conversion, and when water exists in a flowing water weir, the relationship between the measured value of the weighing sensor 1-10 and the water level is as follows:
Wwater (W)The weight of the discharged water for the measuring rod 1-15, S is the cross section area of the measuring rod 1-15, rhoWater (W)Is the density of water, h is the water level at the time of measurement;
h is the water level during measurement, in the formula (2), the weighing sensors 1-10 are subjected to tension during measurement, and in the formula (3), the weighing sensors 1-10 are subjected to compression during measurement;
the lower support 1-4 is arranged in the liquid level measuring barrel body 1-5 through threaded connection, the upper part of the lower support 1-4 is provided with a plurality of support annular grooves 1-4-1 for installing and limiting the stable cover barrel 1-16, a plurality of support channels 1-4-2 are uniformly and circumferentially arranged on the lower support 1-4 for overflowing, the bottom of a stable cover barrel 1-16 is arranged in a support annular groove 1-4-1, the top of the stable cover barrel 1-16 is arranged in an end cover annular groove 1-2-2, the stable cover barrel 1-16 is configured according to the size of the selected diameter of the metering rod 1-15, a plurality of communicating holes 1-16-1 are arranged on the stable cover barrel 1-16 for overflowing, and the lower support 1-4 is positioned above the base 1-7; the base 1-7 and the liquid level measuring barrel body 1-5 are connected and arranged at the bottom of the liquid level measuring barrel body 1-5 through screw threads, the bottom of the base 1-7 is provided with a base mounting hole 1-7-1 for dismounting the base 1-7, a base ring cavity 1-7-3 for dismounting the water inlet mechanism 1-6 and the water outlet mechanism 1-9 is arranged inside the base 1-7, a base filtering cavity 1-7-2 is arranged outside the base 1-7, a base buffering cavity 1-7-6 is arranged inside the base 1-7, the base filtering cavity 1-7-2 is communicated with the base buffering cavity 1-7-6, a filter screen 1-19 is arranged inside the base filtering cavity 1-7-2, and the base filtering cavity 1-7-2 is used for mounting the buffering mechanism 1-8, internal threads are arranged in the base buffering cavity 1-7-6, the buffering mechanism 1-8 is arranged in the base buffering cavity 1-7-6 in a matching way through buffering mounting threads L6, one side of the base 1-7 is provided with a base water inlet channel 1-7-5 and a base water inlet jack 1-7-4, the other side of the base 1-7 is provided with a base water outlet channel 1-7-7 and a base water outlet jack 1-7-8, the water inlet mechanism 1-6 is arranged in the base water inlet jack 1-7-4, the water outlet mechanism 1-9 is arranged in the base water outlet jack 1-7-8, the base buffering cavity 1-7-6 is communicated with the base water inlet jack 1-7-4 through the base water inlet channel 1-7-5, the base buffer cavity 1-7-6 is communicated with a base water outlet jack 1-7-8 through a base water outlet channel 1-7-7;
in the buffer mechanism 1-8, the buffer valve body 1-8-1 is symmetrical about itself, the right side in the buffer valve body 1-8-1 is provided with a buffer right transverse channel L2 and a buffer right vertical channel L3, one end of the buffer right transverse channel L2 is communicated with the outside, the other end of the buffer right transverse channel L2 is communicated with the buffer right vertical channel L3, the buffer right vertical channel L3 is communicated with the upper part and the lower part of the buffer valve body 1-8-1, the left side in the buffer valve body 1-8-1 is provided with a buffer left vertical channel L4 and a buffer left transverse channel L5, one end of the buffer left transverse channel L5 is communicated with the outside, the other end of the buffer left transverse channel L5 is communicated with the buffer left vertical channel L4, the buffer left vertical channel L4 is communicated with the upper part and the lower part of the buffer valve body 1-8-, the periphery of the lower part of the buffer valve body 1-8-1 is provided with a buffer outer hexagon L1, the buffer valve body 1-8-1 is provided with a through hole along the self rotation center, the buffer adjusting rod 1-8-2 is installed in a matching way with the through hole, the buffer valve 1-8-3 is sleeved at one end of the buffer adjusting rod 1-8-2, one side of the buffer valve 1-8-3 is provided with a buffer retainer ring 1-8-4 for limiting the axial direction of the buffer valve 1-8-3, the buffer retainer ring 1-8-4 is installed on the buffer adjusting rod 1-8-2, the other side of the buffer valve 1-8-3 is attached to the upper end face of the buffer valve body 1-8-1, the opening degrees of the buffer right vertical channel L3 and the buffer left vertical channel L4 are adjusted by rotating the buffer valve, the lower end of the buffer adjusting rod 1-8-2 is provided with a buffer tightening nut 1-8-5, and after the opening degrees of the buffer right vertical channel L3 and the buffer left vertical channel L4 are adjusted as required, the relative opening position of the buffer valve 1-8-3 is locked by tightening the buffer tightening nut 1-8-5;
in the water inlet mechanism 1-6, a water inlet mounting thread M7 and a water inlet valve body end surface M5 are arranged on the periphery of one end of a water inlet valve body 1-6-7 and are respectively used for connecting, mounting and positioning with a base water inlet jack 1-7-4, a water inlet axial channel M6, a water inlet sealing line M8, a water inlet valve body cavity M9 and a water inlet mounting hole M3 are sequentially arranged inside the water inlet valve body 1-6-7 from right to left, water inlet radial channels M4 are uniformly arranged along the circumferential direction of the water inlet valve body 1-6-7, the water inlet radial channels M4 are communicated with a water inlet valve body cavity M9, a water inlet valve core 1-6-4 is matched and mounted with the water inlet valve body 1-6-7 through a water inlet mounting hole M3, water inlet valve core supports M1 are uniformly arranged along the circumferential direction of the water inlet valve core 1-6-4, so that the water inlet valve core 1-6-4 is in line contact with a reserved space, the check ring 1-6-6 for the water inlet hole is arranged in the water inlet axial channel M6, one end of the water inlet negative pressure spring 1-6-5 in a pre-compression state is contacted with the check ring 1-6-6 for the water inlet hole, the other end of the water inlet negative pressure spring 1-6-5 is contacted with one end of the water inlet valve core 1-6-4, the other end of the water inlet valve core 1-6-4 is contacted with one end of the water inlet adjusting spring 1-6-3, the other end of the water inlet adjusting spring 1-6-3 is contacted with the water inlet adjusting rod 1-6-1, the water inlet adjusting rod 1-6-1 is connected with the water inlet valve body 1-6-7 through threaded matching, the matching amount of the water inlet adjusting rod 1-6-1 and the water inlet valve body 1-6-7 is adjusted through the rotation of the water inlet adjusting, further adjusting the precompression amount of the water inlet adjusting spring 1-6-3, so that the conical surface of the water inlet valve core 1-6-4 is in contact sealing with a water inlet sealing line M8, presetting the precompression force of the water inlet adjusting spring 1-6-3 and the friction force of the water inlet valve core 1-6-4 relative to the water inlet mounting hole M3 to be equal to the precompression force of the water inlet negative pressure spring 1-6-5, so that the opening pressure of the water inlet valve core 1-6-4 is zero, under the action of the internal and external pressure difference of the liquid level measuring barrel body 1-5, the water inlet valve core 1-6-4 is opened, water enters the liquid level measuring barrel body 1-5 from the water inlet axial channel M6 through the water inlet valve body cavity M9 and the water inlet radial channel M4, the water inlet adjusting rod 1-6-1 is provided with a water inlet caulking nut 1-6-2, after the water inlet adjusting spring 1-6-3 is adjusted, the adjusted value is locked by tightly assembling the water inlet assembling nut 1-6-2;
in the water outlet mechanism 1-9, the periphery of one end of the water outlet valve body 1-9-7 is provided with a water outlet mounting thread N7 and a water outlet valve body end surface N5 which are respectively used for connecting, mounting and positioning with the base water outlet jack 1-7-8, a water outlet axial channel N6, a water outlet sealing line N8, a water outlet valve body-shaped cavity N9 and a water outlet mounting hole N3 are sequentially arranged inside the water outlet valve body 1-9-7 from left to right, water outlet radial channels N4 are uniformly distributed along the circumferential direction of the water outlet valve body 1-9-7, the water outlet radial channels N4 are communicated with the water outlet valve body-shaped cavity N9, the water outlet valve core 1-9-4 is connected with the water outlet valve core support 1-9-8 through thread matching, the water outlet valve core support 1-9-8 is matched and mounted with the water outlet valve body 1-9-7 through the water outlet mounting hole N3, water outlet valve core supports N1 are uniformly distributed along the circumference of the water outlet valve core support 1-9-8, so that the water outlet valve core support 1-9-8 is in line contact with a reserved space of a water outlet mounting hole N3, a check ring 1-9-6 for the water outlet hole is arranged in a water outlet axial channel N6, one end of a water outlet negative pressure spring 1-9-5 in a pre-compression state is in contact with the check ring 1-9-6 for the water outlet hole, the other end of the water outlet negative pressure spring 1-9-5 is in contact with one end of a water outlet valve core 1-9-4, one end of the water outlet valve core support 1-9-8 is in contact with one end of a water outlet adjusting spring 1-9-3, the other end of the water outlet adjusting spring 1-9-3 is in contact with a water outlet adjusting rod 1-9-1, the water outlet adjusting rod 1-9-1 is connected with a water outlet valve body 1, and the matching amount of the water outlet adjusting rod 1-9-1 and the water outlet valve body 1-9-7 is adjusted through the rotation of the water outlet adjusting inner hexagonal N2, so that the precompression amount of the water outlet adjusting spring 1-9-3 is adjusted, the conical surface of the water outlet valve core 1-9-4 is in contact sealing with a water outlet sealing line N8, the precompression force of the water outlet adjusting spring 1-9-3 is preset to be equal to the friction force of the water outlet valve core support 1-9-8 relative to the water outlet mounting hole N3 and the precompression force of the water outlet negative pressure spring 1-9-5, so that the opening pressure of the water outlet valve core 1-9-4 is zero, the water outlet valve core 1-9-4 is opened under the action of the pressure difference between the inside and the outside of the liquid level measuring barrel body 1-5, water in the liquid level measuring barrel body 1-5 enters from the water outlet radial channel N4 and flows out through the water outlet valve body-shaped cavity N36, the water outlet adjusting rod 1-9-1 is provided with a water outlet tightening nut 1-9-2, after the water outlet adjusting spring 1-9-3 is adjusted, the water outlet tightening nut 1-9-2 is tightened to lock an adjusted value, one end of the water outlet valve core 1-9-4 is provided with an outer hexagon, the water outlet valve core support 1-9-8 is provided with an inner hexagon, and the water outlet valve core support 1-9-8 and the water outlet valve core 1-9-4 are respectively installed in the water outlet valve body 1-9-7 and then are matched with the water outlet valve core 1-9-8 and the water outlet valve core 1-9-4 through inner hexagon rotation;
in this embodiment, when the water level outside the liquid level measuring barrel body 1-5 is higher than the internal water level, the data processor 1-1 controls the electromagnetic proportional air release valve 1-14 to adjust the opening degree to be larger, water enters the base filtering cavity 1-7-2 after being filtered by the filter screen 1-19, and simultaneously enters the base buffering cavity 1-7-6 through the buffering right transverse channel L2, the buffering right vertical channel L3, the buffering left transverse channel L5 and the buffering left vertical channel L4, the water outlet mechanism 1-9 is one-way non-return at this time, the water pushes the water inlet valve core 1-6-4 to open through the base water inlet channel 1-7-5, the base water inlet jack 1-7-4 and the water inlet axial channel M6, so that the water flows into the liquid level measuring barrel body 1-5 through the water inlet valve body cavity M9 and the water inlet radial channel M4, the weighing sensor 1-10 monitors stress data in real time through a weighing pull rope 1-12 or a weighing rod 1-11 and feeds the stress data back to the data processor 1-1; when the water level outside the liquid level measuring barrel body 1-5 is lower than the internal water level, the data processor 1-1 controls the electromagnetic proportion air release valve 1-14 to adjust the large opening degree, at the moment, the water inlet mechanism 1-6 is in one-way non-return, water enters the water outlet valve body cavity N9 through the water outlet radial channel N4 on the water outlet mechanism 1-9 to push the water outlet valve core 1-9-4 to open, so that the water flows into the base buffering cavity 1-7-6 through the water outlet axial channel N6, the base water outlet jack 1-7-8 and the base water outlet channel 1-7-7 on the buffering mechanism 1-8, and is output through the buffering right transverse channel L2, the buffering right vertical channel L3, the buffering left transverse channel L5 and the buffering left vertical channel L4 at the same time to output the liquid level measuring barrel body 1-5 through the base filtering cavity 1-7-2 and the filter screen 1-19, the acting force on the measuring rod 1-15 is changed in the water output process, the stress data of the measuring rod 1-15 is monitored in real time by a weighing pull rope 1-12 or a weighing rod 1-11 and fed back to the data processor 1-1, and the data processor 1-1 processes the stress data to obtain the current water level value; when the water levels inside and outside the liquid level measuring barrel body 1-5 are kept consistent, the data processor 1-1 controls the electromagnetic proportion deflation valve 1-14 to adjust a small opening degree or close, so as to reduce the fluctuation deviation of the water level caused by external unstable factors, when the water surface is influenced by the external environment to generate fluctuation, the induction floating ball 1-21 generates fluctuation, the data processor 1-1 comprehensively judges the fluctuation factors of the water surface according to the fluctuation characteristics of the induction floating ball 1-21 and in combination with the data feedback of the wind speed measuring instrument 1-13, when the fluctuation center height of the induction floating ball 1-21 is not obviously changed in a certain time period, the data processor 1-1 controls the electromagnetic proportion deflation valve 1-14 to close, so as to prevent the water level value from frequently changing caused by sudden fluctuation, when the fluctuation center height of the induction floating ball 1-21 is obviously changed greatly in a certain time period, the data processor 1-1 controls the electromagnetic proportional air release valve 1-14 to adjust a larger opening degree, quickly adjusts the internal and external water level difference in real time, and in the water level change process of the electromagnetic proportional air release valve 1-14 with the larger opening degree, the water inlet mechanism 1-6 and the water outlet mechanism 1-9 are respectively combined with the buffer mechanism 1-8 to play a role in buffering and blocking a water path, so that impact caused by the larger water level difference is avoided.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The liquid level measuring device for the hydraulic engineering comprises a liquid level measuring barrel body and is characterized in that one side of the liquid level measuring barrel body is provided with an installation support for installing a water level and fluctuation measuring mechanism, the other side of the liquid level measuring barrel body is provided with a power generation mechanism for performing hydroelectric power generation, an induction support is arranged on the liquid level measuring barrel body, and an induction floating ball is sleeved on the induction support; the upper end cover is arranged at the top of the liquid level measuring barrel body, a plurality of end cover annular grooves for installing and stabilizing the top of the cover barrel are arranged at the upper part of an inner cavity of the upper end cover, an end cover air passage for communicating the inside and the outside of the liquid level measuring barrel body is arranged on one side of the upper end cover along the vertical direction, an electromagnetic proportion air release valve for controlling air release is arranged on the upper end cover positioned at the outlet of the end cover air passage, and the wind speed measuring instrument is arranged at; weighing sensor sets up the gyration middle part at the upper end cover, and the weighing sensor bottom is connected with the metering rod through weighing pole or weighing stay cord, when weighing sensor is connected with the metering rod through weighing stay cord, weighing sensor is used for measuring the pulling force of metering rod weighing sensor, when rivers slowly rise, the inside and outside water level of level measurement bucket keeps unanimous, along with the water level slowly rises, under the effect of buoyancy, the metering rod come-up is connected with weighing sensor, the pulling force that weighing sensor receives slowly reduces, calculate the size of water level value according to reading conversion, when the rivers weir has water, weighing sensor's measured value and water level relation are:
W1-W2=Wwater (W)（1）
When weighing sensor is connected with the metering rod through the weighing pole, weighing sensor is used for measuring the holding power of metering rod symmetry retransmission sensor, the weighing sensor measured value when anhydrous sets up to zero, when rivers slowly rise, the inside and outside water level of level measurement barrel keeps unanimous, along with the water level slowly rises, under the effect of buoyancy, the metering rod come-up is connected with weighing sensor, the pressure that weighing sensor receives increases gradually, calculate the size of water level value according to the reading conversion, when the rivers weir has water, weighing sensor's measured value and water level relation are:
in the above formulas (1) to (3), W1Measured value of a load cell in the absence of water, W2Measured value of a load cell in the presence of water, WWater (W)Is used for measuring the weight of the water discharged by the rod, S is the cross section area of the measuring rod,
is the density of water, h is the water level at the time of measurement;
the bottom in the liquid level measuring barrel is provided with a lower bracket, the upper part of the lower bracket is provided with a plurality of bracket ring grooves for installing the bottom of a stable cover barrel, a plurality of bracket channels for water overflowing are uniformly distributed on the lower bracket along the circumferential direction, a plurality of communication holes for water flowing are arranged on the stable cover barrel, the lower bracket is positioned above a base, the base is arranged at the bottom of the liquid level measuring barrel, a base ring cavity for assembling and disassembling a water inlet mechanism and a water outlet mechanism is arranged in the base, a base filtering cavity is arranged outside the base, a base buffering cavity for installing a buffering mechanism is arranged in the base, the base filtering cavity is communicated with the base buffering cavity, a base water inlet channel and a base water inlet jack for installing the water inlet mechanism are arranged on one side of the base, a base water outlet channel and a base water outlet jack for installing the water outlet mechanism are arranged on, the base buffer cavity is communicated with the base water inlet jack through a base water inlet channel, and is communicated with the base water outlet jack through a base water outlet channel;
in the water inlet mechanism, a water inlet axial channel, a water inlet sealing line, a water inlet valve body cavity and a water inlet mounting hole for mounting a water inlet valve core are sequentially arranged in the water inlet valve body from right to left, water inlet radial channels communicated with the water inlet valve body cavity are uniformly distributed in the circumferential direction of the water inlet valve body, water inlet valve core supporting bodies for enabling the water inlet valve core to be in line contact with the water inlet mounting hole are uniformly distributed in the circumferential direction of the water inlet valve core, one end of a water inlet negative pressure spring in a pre-compression state is in contact with the water inlet axial channel, the other end of the water inlet negative pressure spring is in contact with one end of the water inlet valve core, the other end of the water inlet valve core is in contact with one end of a water inlet adjusting spring, the other end of the water inlet adjusting spring is in contact with a water inlet adjusting rod, the water inlet adjusting rod is connected with the water inlet valve body, and, so that the opening pressure of the water inlet valve core is zero;
in the water outlet mechanism, a water outlet axial channel, a water outlet sealing line, a water outlet valve body cavity and a water outlet mounting hole for mounting a water outlet valve core are sequentially arranged in the water outlet valve body from left to right, water outlet radial channels communicated with the water outlet valve body cavity are uniformly distributed in the circumferential direction of the water outlet valve body, the water outlet valve core is connected with a water outlet valve core bracket, the water outlet valve core bracket is matched and mounted with the water outlet valve body through the water outlet mounting hole, water outlet valve core support bodies which enable the water outlet valve core bracket to be in line contact with the water outlet mounting hole are uniformly distributed in the circumferential direction of the water outlet valve core bracket, one end of a water outlet negative pressure spring in a pre-compression state is contacted with the water outlet axial channel, the other end of the water outlet negative pressure spring is contacted with one end of the water outlet valve core, one end of the water outlet valve core bracket is contacted with one end, the pre-compression force of the water outlet adjusting spring is preset to be equal to the sum of the friction force of the water outlet valve core support relative to the water outlet mounting hole and the pre-compression force of the water outlet negative pressure spring, so that the opening pressure of the water outlet valve core is zero;
the weighing sensor, the induction bracket and the electromagnetic proportional air release valve are respectively connected with the data processor.
2. The apparatus of claim 1, wherein the data processor is connected to a remote host computer.
3. The liquid level measuring device for the water conservancy project according to claim 1, wherein an end cover mounting hole for mounting and dismounting the upper end cover is formed in the upper portion of the upper end cover.
4. The liquid level measuring device for the water conservancy project according to claim 1, wherein a base mounting hole for dismounting and mounting the base is formed in the bottom of the base.
5. The liquid level measuring device for the water conservancy project according to claim 1, wherein a filter screen is arranged in the filtering cavity of the base.
6. The liquid level measuring device for the hydraulic engineering according to claim 1, wherein in the buffering mechanism, the buffering valve body is symmetrical about itself, a buffering right transverse channel and a buffering right vertical channel capable of penetrating the buffering valve body from top to bottom are arranged on the right side in the buffering valve body, one end of the buffering right transverse channel is communicated with the outside, the other end of the buffering right transverse channel is communicated with the buffering right vertical channel, a buffering left vertical channel and a buffering left transverse channel capable of penetrating the buffering valve body from top to bottom are arranged on the left side in the buffering valve body, one end of the buffering left transverse channel is communicated with the outside, and the other end of the buffering left transverse channel is communicated with the buffering left vertical channel.
7. The liquid level measuring device for the water conservancy project according to claim 6, wherein the buffer valve body is provided with a through hole for installing the buffer adjusting rod along the rotation center of the buffer valve body, and the buffer valve for adjusting the opening degrees of the buffer right vertical channel and the buffer left vertical channel is sleeved at one end of the buffer adjusting rod.
8. The liquid level measuring device for the water conservancy project according to claim 7, wherein a buffer check ring for axially limiting the buffer valve is arranged on one side of the buffer valve, the buffer check ring is arranged on the buffer adjusting rod, and the other side of the buffer valve is attached to the upper end face of the buffer valve body.
9. The liquid level measuring device for the water conservancy project according to claim 7, wherein a buffering tightening nut for locking the relative opening position of the buffering valve is arranged at the lower end of the buffering adjusting rod.
10. The liquid level measuring device for the water conservancy project according to claim 6, wherein a buffering mounting thread is arranged on the periphery of the upper part of the buffering valve body, and the buffering mechanism is mounted in the buffering cavity of the base in a matching mode through the buffering mounting thread.
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| CN201810502797.3A CN108593044B (en) | 2018-05-23 | 2018-05-23 | Liquid level measuring device for hydraulic engineering |
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| CN201810502797.3A CN108593044B (en) | 2018-05-23 | 2018-05-23 | Liquid level measuring device for hydraulic engineering |
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| CN108593044B true CN108593044B (en) | 2020-03-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278206Y (en) * | 1996-02-27 | 1998-04-08 | 林燕彪 | Gravity type liquid level gauge |
| US6497143B1 (en) * | 2000-07-17 | 2002-12-24 | Isaac Rinkewich | Container with automatically controlled discharge for continuous metering of liquid flow |
| CN2535785Y (en) * | 2002-04-26 | 2003-02-12 | 李启达 | Liquid-level meter |
| CN100412516C (en) * | 2006-08-23 | 2008-08-20 | 潍坊市阿波罗散热器制造有限公司 | Differential pressure type liquid level detector |
| CN202734910U (en) * | 2012-07-30 | 2013-02-13 | 四川川润动力设备有限公司 | External double chamber balance container |
| CN105865573B (en) * | 2016-03-30 | 2022-07-05 | 江苏大发环保科技有限公司 | Liquid level measuring device and measuring method thereof |
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