CN105203183A - Interface level meter and interface level measuring method - Google Patents
Interface level meter and interface level measuring method Download PDFInfo
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- CN105203183A CN105203183A CN201510639213.3A CN201510639213A CN105203183A CN 105203183 A CN105203183 A CN 105203183A CN 201510639213 A CN201510639213 A CN 201510639213A CN 105203183 A CN105203183 A CN 105203183A
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Abstract
The invention provides an interface level meter and an interface level measuring method. The interface level meter is used for measuring the interface level of mixed liquid and comprises a conduit, an ultrasonic wave transceiver and a floater. The ultrasonic wave transceiver is fixedly arranged in the conduit, the floater is located in the conduit, the density of the floater is between the densities of two adjacent layers of media of the to-be-measured mixed liquid, an ultrasonic wave reflecting face is arranged on the side, close to the ultrasonic wave transceiver, of the floater, and the receiving-emitting end of the ultrasonic wave transceiver is towards the floater. According to the interface level meter in the technical scheme, ultrasonic waves emitted by the ultrasonic wave transceiver are returned through the floater located at the interface level position, returned energy is higher, and the position of the interface level can be more accurately reflected; in addition, the wave length of the ultrasonic waves is large, the ultrasonic waves can more easily bypass an interference object and are not prone to being disturbed by impurities in the mixed liquid, a false interface level can be avoided, and interface level measuring accuracy and interface level measuring reliability are improved.
Description
Technical field
The present invention relates to technical field of petrochemical industry, particularly relate to a kind of interfacial meter and position, boundary measuring method.
Background technology
In technical field of petrochemical industry, the liquid that density is different mixes and can produce lamination, and the liquid medium that density is little is positioned at upper strata, and the liquid medium that density is large is positioned at lower floor.Be separated with medium by medium in mixing material exactly if think, so first need to measure the boundary position of liquid medium in layering place, position, boundary refers to the height (position) of two kinds of different liquid medium phase interfacies.
At present, the maximum method of existing use utilizes radar interfacial meter to measure position, boundary, according to being radar Time Domain Reflectometry principle.Concrete, antenna is interted in mixing material, control radar probe emitting electromagnetic wave, this electromagnetic wave onwards transmission in antennas, when it runs into position, boundary, because of the sudden change of liquid medium specific inductive capacity, electromagnetic wave is reflected back, calculate electromagnetic wave transmission time back and forth in single liquid medium, the velocity of wave in this liquid medium according to this transmission time and electromagnetic wave, just can calculate the position at place, out-of-bounds position.
But, due to adsorbent solid impurity (such as, wax deposition) easy on antenna, if run into solid impurity when electromagnetic wave transmits in antennas, then can produce reflex, obtain the false transmission time, and then obtaining false position, boundary, the position, boundary causing measurement to obtain is inaccurate.
Summary of the invention
The invention provides a kind of interfacial meter and position, boundary measuring method, to solve the inaccurate problem of measurement result produced when existing radar interfacial meter measures the position, boundary of mixing material.
A kind of interfacial meter provided by the invention, for measuring the position, boundary of mixing material, described interfacial meter, comprising: conduit, ultrasonic transmitter-receiver and float;
Described ultrasonic transmitter-receiver is fixedly installed in described conduit, described float is positioned at described conduit, between the density of the two layer medium that the density of described float is adjacent in mixing material to be measured, described float has ultrasonic reflections face near the side of described ultrasonic transmitter-receiver, and the sending and receiving end of described ultrasonic transmitter-receiver is towards described float;
Described conduit, comprising: steady flow segment and eddy flow section;
The sidewall of described conduit is provided with through hole, and described through hole, comprising: current stabilization through hole revolves through hole with making; Described current stabilization through hole is positioned at described steady flow segment, described in make and revolve through hole and be positioned at described eddy flow section;
Described current stabilization through hole, for reducing the fluctuation of described mixing material to be measured at described steady flow segment, described in make and revolve through hole, produce eddy flow for making described mixing material to be measured in described eddy flow section;
Described ultrasonic transmitter-receiver is fixedly installed on described steady flow segment;
The side of described float is provided with blade, described blade, drives described float to rotate for the eddy flow produced according to described eddy flow section.
In one embodiment of this invention, described in make that to revolve through hole be strip, described in make the length direction revolving through hole consistent with the length direction of described conduit, described in make and revolve through hole, comprising: at least one is made and screws in mouth through hole and at least one makes screw outlet through hole;
Make described in each and screw in mouth through hole and be provided with and screw in described making the guide plate that mouth through hole is acute angle, each described guide plate screws in mouth through hole to the direction extension outside described conduit from making described in each, and each described guide plate is consistent at described conduit bearing of trend circumferentially;
Make screw outlet through hole described in each and be provided with spring bearer plate, one end of each described spring bearer plate be fixedly installed on each described in make one end of screw outlet through hole, the other end of each described spring bearer plate along described conduit circumferencial direction extend to each described in make outside screw outlet through hole; Described spring bearer plate, makes screw outlet through hole described in covering.
In another embodiment of the invention, the quantity of described blade is at least three, and each described blade is evenly distributed on the side of described float.
In another embodiment of the present invention, described float is evenly provided with the floating hole being communicated with float end face and float bottom surface;
Described floating hole, for reducing the fluctuation of described float in described mixing material to be measured.
In the above embodiment of the present invention, described float, also comprises: balancing weight;
Described balancing weight, for controlling the density of described float.
In the above embodiment of the present invention, described interfacial meter, also comprises: stop part;
Described stop part is fixedly installed on the inwall of described conduit, and described stop part is between described ultrasonic transmitter-receiver and described float.
In the above embodiment of the present invention, described interfacial meter, also comprises: circuit module;
Described circuit module is fixedly installed on the top of described conduit, and described circuit module is connected with described ultrasonic transmitter-receiver;
Described circuit module, launches ultrasound wave for controlling described ultrasonic transmitter-receiver, for calculating the position, boundary of described mixing material to be measured according to described hyperacoustic transmission time, also for the distance between position, described boundary and described ultrasonic transmitter-receiver being sent out.
In the above embodiment of the present invention, described interfacial meter, also comprises: temperature measurement module;
Described temperature measurement module is fixedly installed in described conduit, described temperature measurement module, for detecting the temperature of described mixing material to be measured;
Described circuit module, also for carrying out temperature compensation according to described temperature to described mixing material to be measured.
In one more embodiment of the present invention, the bottom of described conduit is also provided with guide hole, and the aperture of described guide hole is less than the external diameter of described float.
The present invention also provides a kind of boundary position measuring method, and utilize the boundary position of interfacial meter provided by the invention to mixing material to be measured to measure, described method, comprising:
Described interfacial meter is vertically placed in described mixing material to be measured; Wherein, described ultrasonic transmitter-receiver is fixedly installed in the top dielectric of described mixing material adjacent two layers medium to be measured in described conduit, the boundary position place of described buoys float between the two layer medium that described mixing material to be measured is adjacent;
Control described ultrasonic transmitter-receiver launch ultrasound wave to the direction of described float and receive the described ultrasound wave that described float returns;
Calculate described ultrasonic transmitter-receiver from launching described ultrasound wave to receiving the described ultrasound wave time used;
The velocity of propagation in described top dielectric according to described time and described ultrasound wave, calculates the distance between position, described boundary and described ultrasonic transmitter-receiver.
Interfacial meter provided by the invention and position, boundary measuring method, conduit is comprised by arranging, the interfacial meter of ultrasonic transmitter-receiver and float, and make ultrasonic transmitter-receiver be fixedly installed in conduit, float is positioned at conduit, and the density of float is between the density of the adjacent two layer medium of mixing material to be measured, therefore, utilize the ultrasound wave that the float being in position, boundary place is launched to return ultrasonic transmitter-receiver, the energy returned is stronger, the position of out-of-bounds position can be reflected exactly, and hyperacoustic wavelength is relatively long, more easily walk around chaff interference, be not subject to the impurity interference in mixing material, therefore, position, false boundary can not be produced, improve the accuracy and fiduciary level of measuring position, boundary, solve the inaccurate problem of measurement result produced when existing radar interfacial meter measures position, boundary.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of interfacial meter embodiment one of the present invention;
Fig. 2 is the structural representation of conduit in the interfacial meter of Fig. 1;
Fig. 3 is the schematic cross-section of conduit in the interfacial meter of Fig. 1;
Fig. 4 is the structural representation of float in the interfacial meter of Fig. 1;
Fig. 5 is the structural representation of interfacial meter embodiment two of the present invention;
Fig. 6 is the schematic flow sheet of position, boundary of the present invention measuring method embodiment.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In technical field of petrochemical industry, the liquid that density is different mixes and can produce lamination, and the liquid medium that density is little is positioned at upper strata, and the liquid medium that density is large is positioned at lower floor.Such as, for oil and the mixing material of water, due to oily different with the density of water, can lamination be produced, again because the density of oil is less than the density of water, therefore, oil level in the upper strata of mixing material water level in the lower floor of mixing material.Exactly the medium in mixing material is separated with medium if think, so first needs to measure the boundary position of liquid medium in layering place.
At present, mainly utilize the boundary position of radar interfacial meter to mixing material to measure, foundation is radar Time Domain Reflectometry principle.Concrete, to be used for transmitting electromagnetic antenna interts in mixing material, control radar probe emitting electromagnetic wave, this electromagnetic wave onwards transmission in antennas, when running into position, boundary, because the specific inductive capacity of mixing material adjacent two layers medium is undergone mutation, electromagnetic wave is reflected back, calculate electromagnetic wave transmission time back and forth in single liquid medium, the velocity of wave in this liquid medium according to this transmission time and electromagnetic wave, just can calculate the distance of present position, out-of-bounds position and radar probe.But, due to adsorbent solid impurity (such as, wax deposition) easy on antenna, when running into solid impurity when electromagnetic wave transmits in antennas, also can produce reflex, therefore can obtain the false transmission time, and then obtain false position, boundary, cause the position, boundary measured inaccurate.
The above-mentioned defect existed when measuring mixing material circle position for radar interfacial meter, the invention provides a kind of interfacial meter and position, boundary measuring method, wherein, interfacial meter, comprise: conduit, ultrasonic transmitter-receiver and float, this ultrasonic transmitter-receiver is fixedly installed in conduit, float is positioned at conduit, and between the density of the two layer medium adjacent in mixing material to be measured of the density of float, float has ultrasonic reflections face near the side of ultrasonic transmitter-receiver, and the sending and receiving end of ultrasonic transmitter-receiver is towards described float.When utilizing this interfacial meter to measure the position, boundary of mixing material, the ultrasound wave that ultrasonic transmitter-receiver launches is returned by the float being in adjacent two layers medium circle position place, the energy returned is stronger, the position of out-of-bounds position can be reflected more accurately, and the electromagnetic length of hyperacoustic wavelength ratio, more easily walk around chaff interference, the impurity interference not in liquid body, position, false boundary can not be produced, and then improve the accuracy and fiduciary level of measuring position, boundary.
Fig. 1 is the structural representation of interfacial meter embodiment one of the present invention.The interfacial meter that the embodiment of the present invention one provides, for measuring the position, boundary of mixing material, as shown in Figure 1, this interfacial meter, comprising: conduit 1, ultrasonic transmitter-receiver 2 and float 3.
Ultrasonic transmitter-receiver 2 is fixedly installed in conduit 1, float 3 is positioned at conduit 1, between the density of the two layer medium that the density of float 3 is adjacent in mixing material to be measured, float 3 has ultrasonic reflections face near the side of ultrasonic transmitter-receiver 2, and the sending and receiving end of ultrasonic transmitter-receiver 2 is towards float 3.
Conduit 1, comprising: steady flow segment and eddy flow section.As shown in Figure 1, the sidewall of conduit 1 is provided with through hole, this through hole, comprising: current stabilization through hole 11 revolves through hole 12 with making; Current stabilization through hole 11 is positioned at steady flow segment, makes to revolve through hole 12 and be positioned at eddy flow section; Current stabilization through hole 11, for reducing the fluctuation of mixing material to be measured at this steady flow segment, makes and revolves through hole 12, produces eddy flow for making mixing material to be measured in this eddy flow section.Ultrasonic transmitter-receiver 2 is fixedly installed on steady flow segment.
The side of float 3 is provided with blade 31, and blade 31 drives float 3 to rotate for the eddy flow produced according to eddy flow section.
Concrete, current stabilization through hole 11 is opened in the steady flow segment of conduit 1, make and revolve the eddy flow section that through hole 12 is opened in conduit 1, ultrasonic transmitter-receiver 2 is fixedly installed on the steady flow segment in conduit 1.When utilizing this interfacial meter to measure the position, boundary of mixing material to be measured, current stabilization through hole 11 can reduce the fluctuation of mixing material to be measured at steady flow segment, swing to prevent mixing material to be measured to ultrasonic transmitter-receiver 2 when fluctuating high-order, and when its fluctuation is to being down under ultrasonic transmitter-receiver 2 during low level, thus have influence on the accuracy measured position, boundary.Make and revolve through hole 12 and can increase the fluctuation of mixing material to be measured in eddy flow section, make it produce eddy flow in eddy flow section, and then the blade 31 that float 3 side is arranged can drive float 3 to rotate under the effect of this eddy flow.
What deserves to be explained is, in order to the fluctuation of the mixing material to be measured making conduit 1 steady flow segment is less, and the fluctuation of the mixing material to be measured of conduit 1 eddy flow section is comparatively large, and the area of current stabilization through hole 11 should be less than the area made and revolve through hole 12.
In actual applications, when utilizing this interfacial meter to measure the position, boundary of mixing material, be fixed and be arranged in mixing material to be measured, now, conduit 1 is vertically arranged, ultrasonic transmitter-receiver 2 is arranged in the top dielectric of conduit 1 mixing material to be measured, and float 3 is positioned at the below of ultrasonic transmitter-receiver 2, and swims in position, the boundary place between the adjacent two layer medium of mixing material to be measured; Control ultrasonic transmitter-receiver 2 and launch ultrasound wave towards the direction of float 3, ultrasound wave is propagated in top dielectric.Between density due to the two layer medium adjacent in mixing material to be measured of the density of float 3, therefore, even if the position, boundary of mixing material to be measured changes, float 3 swims in position, the boundary place of above-mentioned two adjacent media all the time.The ultrasound wave that the ultrasonic reflections face of float 3 makes ultrasonic transmitter-receiver 2 launch returns at position, boundary place, ultrasonic transmitter-receiver 2 receives the ultrasound wave that float 3 returns, according to ultrasound wave from being transmitted into received two-way time, the distance between out-of-bounds position and ultrasonic transmitter-receiver 2 can be calculated.
Because interfacial meter is fixedly installed in mixing material to be measured, so can measure the height residing for ultrasonic transmitter-receiver 2, according to the height residing for the distance between position, boundary and ultrasonic transmitter-receiver 2 and ultrasonic transmitter-receiver 2, just can calculate the height of out-of-bounds position.
The interfacial meter that the embodiment of the present invention one provides, conduit is comprised by arranging, the interfacial meter of ultrasonic transmitter-receiver and float, and make ultrasonic transmitter-receiver be fixedly installed in conduit, float is positioned at conduit, and between the density of the two layer medium adjacent in mixing material to be measured of the density of float, therefore, utilize the ultrasound wave that the float being in position, boundary place is launched to return ultrasonic transmitter-receiver, distance between out-of-bounds position and ultrasonic transmitter-receiver can be calculated from being transmitted into the received time according to ultrasound wave, and then determine the height of out-of-bounds position, compared with existing radar interfacial meter, the energy that float returns is stronger, the position of out-of-bounds position can be reflected more accurately, and hyperacoustic wavelength to compare electromagnetic wavelength longer, it more easily walks around chaff interference, impurity interference not in liquid body, position, false boundary can not be produced, therefore, improve the accuracy and fiduciary level of measuring position, boundary.
Fig. 2 is the structural representation of conduit in the interfacial meter of Fig. 1.Fig. 3 is the schematic cross-section of conduit in the interfacial meter of Fig. 1.With reference to shown in Fig. 2 and Fig. 3, in interfacial meter provided by the invention, make and revolve through hole 12 for strip, make the length direction revolving through hole 12 consistent with the length direction of conduit 1, this is made and revolves through hole 12, comprising: at least one makes screw-in mouth through hole 121 and at least one makes screw outlet through hole 122.
Concrete, each making screws in mouth through hole 121 place and is provided with and screws in the guide plate 123 that mouth through hole 121 is acute angle with making, each guide plate 123 extends from each direction screwed in outside mouth through hole 121 conductive pipe 1 of making, and each guide plate 123 is consistent at conduit 1 bearing of trend circumferentially.
Each screw outlet through hole 122 place that makes is provided with spring bearer plate 124, one end of each spring bearer plate 124 is fixedly installed on each one end of making screw outlet through hole 122, and the other end of each spring bearer plate 124 extends to along conduit 1 circumferencial direction eachly to be made outside screw outlet through hole 122; Spring bearer plate 124 makes screw outlet through hole 122 for covering.
Concrete, make and revolve through hole 12 for strip, make to screw in mouth through hole 121 and make screw outlet through hole 122 and be uniformly distributed in the circumference of conduit 1, the turn of mixing material to be measured in conduit 1 can be increased; Each screw-in mouth through hole 121 place that makes is provided with a guide plate 123, each guide plate 123 extends from each direction screwed in outside mouth through hole 121 conductive pipe 1 of making, each guide plate 123 screws in mouth through hole 121 in acute angle with each making, and in the circumference of conduit 1, the bearing of trend of each guide plate 123 is consistent.
Such as, as shown in Figure 3, guide plate 123 extends all along clockwise direction in the circumference of conduit 1.Corresponding each screw outlet through hole 122 place that makes of outer wall of conduit 1 is provided with a spring bearer plate 124, one end of each spring bearer plate 124 is fixedly installed on each one end of making screw outlet through hole 122, the other end of each spring bearer plate 124 extends to eachly to be made outside screw outlet through hole 122, and each spring bearer plate 124 covers eachly makes screw outlet through hole 122.
Wherein, guide plate 123 and to make the effect screwing in mouth through hole 121 be the mixing material to be measured in a certain direction in inflow catheter 1 making conduit 1 outside, as shown in Figure 3, under the effect of guide plate 123, mixed liquor to be measured is known from experience along the direction be rotated counterclockwise by making in screw-in mouth through hole 121 inflow catheter 1; The effect of making screw outlet through hole 122 and spring bearer plate 124 is that the mixing material to be measured in conduit 1 is discharged, but stops the liquid outside conduit 1 to enter in conduit 1 from making screw outlet through hole 122, namely realizes the effect of retaining valve.
Fig. 4 is the structural representation of float in the interfacial meter of Fig. 1.As shown in Figure 4, the quantity of blade 31 is at least three, and each blade 31 is evenly distributed on the side of float 3.
Concrete, float 3 can be fixedly installed multiple blade 31, multiple blades 31 are evenly distributed on the side edge of float 3, under normal circumstances, the quantity of blade 31 is greater than three, and blade 31 can drive float 3 to rotate under the effect of eddy flow section eddy flow, and the float 3 of rotation can destroy the coalescent of the impurity such as agglomerated thing in conduit 1, the position, boundary be applicable under harsh environments is measured, and reduces the harmful effect that the impurity such as agglomerated thing bring accuracy of measurement.
Make revolve through hole 12 with blade 31 float 3 with the use of, float 3 can be driven to rotate in conduit 1, in the blending agent to be measured of fluctuation, blade 31 can be the powered rotation of float 3, and grinding segmentation is carried out to solid impurity, destroy the coalescent of agglomerated thing, with the motion preventing agglomerated thing impurity from hindering float 3, reduce the impact of solid impurity coalescent in mixed liquid medium to be measured on float 3.
Further, blade 31 can be one-body molded with float 3, also can be bonding etc. form be connected to the side of float 3, optionally, float 3 is set and blade 31 itself all has certain corner angle so that float 3 and blade 31 can play scraper be used for destroy the coalescent of agglomerated thing, also can on float 3 and blade 31 insert blade, to strengthen the effect of scraper, in further destruction conduit, impurity is coalescent.
Further, as shown in Figure 4, float 3 is evenly provided with the floating hole 32 being communicated with float end face and float bottom surface; Floating hole 32 is for reducing the fluctuation of float 3 in mixing material to be measured.
Floating hole 32 rotational symmetry can distribute on float 3, and the up and down fluctuation of float in mixing material to be measured can be reduced in floating hole 32, increases the smoothness measured, and floating hole 32 also has the effect discharging gas in mixing material to be measured.
Further, in the interfacial meter that above-described embodiment provides, float 3, also comprises: balancing weight (not shown); This balancing weight, for controlling the density of float 3.
Balancing weight is evenly arranged in float 3, concrete, can be embedded in float 3, can be embedded in blade 31, but away from the center of float 3, need can make float 3 not easily run-off the straight when rotated like this, the setting of this balancing weight is more conducive to the density controlling float 3, reaches accurate control.
The interfacial meter that the embodiment of the present invention provides, by arranging current stabilization through hole at the steady flow segment of conduit, arrange to make in the eddy flow section of conduit and revolve through hole, at the side of float, at least three blades are set, the fluctuation of mixing material to be measured in steady flow segment can be reduced, and make mixing material to be measured produce eddy flow in eddy flow section, make blade under the effect of eddy flow, to drive float to rotate, and then destroy the coalescent of the impurity such as agglomerated thing in conduit, reduce the impact of impurity on accuracy of measurement.
Fig. 5 is the structural representation of interfacial meter embodiment two of the present invention.The embodiment of the present invention two is on the basis of above-described embodiment one technical scheme, further illustrating interfacial meter.As shown in Figure 5, the interfacial meter that the embodiment of the present invention two provides, also comprises: stop part 4.
Stop part 4 is fixedly installed on the inwall of conduit 1, and stop part 4 is between ultrasonic transmitter-receiver 2 and float 3.
Conduit 1 internal fixtion is provided with stop part 4, and it is between ultrasonic transmitter-receiver 2 and float 3, for stopping that float 3 is near ultrasonic transmitter-receiver 2.Concrete, stop part 4 can be the structure such as back-up ring or backstop, for stopping float 3 under the prerequisite not stopping ultrasound wave transmission, can prevent float 3 from floating up to the measurement blind area of close ultrasonic transmitter-receiver 2, if because float 3 and ultrasonic transmitter-receiver 2 lean on too near, the accuracy of measurement result can be affected.
Further, as shown in Figure 5, the interfacial meter that the above embodiment of the present invention provides, also comprises: circuit module 5.
Circuit module 5 is fixedly installed on the top of conduit 1, and circuit module 5 is connected with ultrasonic transmitter-receiver 2; Circuit module 5, launches ultrasound wave for controlling ultrasonic transmitter-receiver 2, for calculating the position, boundary of mixing material to be measured according to above-mentioned hyperacoustic transmission time, also for the distance between this position, boundary and ultrasonic transmitter-receiver 2 being sent out.Concrete, the distance between the position, boundary calculated and ultrasonic transmitter-receiver 2 sends out by wired or wireless mode by circuit module 5.
Optionally, the interfacial meter that the above embodiment of the present invention provides, also comprises: temperature measurement module (not shown);
Concrete, temperature measurement module is fixedly installed in conduit 1, and this temperature measurement module is for detecting the temperature of mixing material to be measured.Temperature measurement module can be platinum metal-type probe etc., and temperature measurement module is arranged in conduit 1, can be set together with ultrasonic transmitter-receiver 2.Therefore, when utilizing this interfacial meter to measure the temperature of mixing material to be measured, temperature measurement module and ultrasonic transmitter-receiver 2 are all arranged in mixing material to be measured, so, utilize temperature measurement module can measure the temperature of mixing material to be measured.Again because ultrasound wave transmission speed is at different ambient temperatures different, so there is certain impact to position, boundary measurement result in the temperature of mixing material to be measured.Therefore, in order to improve the scope of application of interfacial meter, also in the process measuring mixing material circle position to be measured, temperature compensation can be carried out to mixing material to be measured.
Optionally, circuit module 5, the temperature also for recording according to temperature measurement module carries out temperature compensation to mixing material to be measured.
Further, the interfacial meter that the above embodiment of the present invention provides, the bottom of conduit 1 is also provided with guide hole (not shown), and the aperture of this guide hole is less than the external diameter of float 3.
Concrete, this guide hole is for discharging the solid impurity in conduit, and in general, the aperture of guide hole is more beneficial to more greatly the discharge of impurity, but in order to not make float 3 be discharged to outside conduit, so the aperture of guide hole needs the external diameter being less than float 3.
The interfacial meter that the embodiment of the present invention provides, ultrasound wave is transmitted and received by utilizing ultrasonic transmitter-receiver, float is utilized to return ultrasound wave, make the ultrasonic energy that returns stronger, the position of out-of-bounds position can be reflected more accurately, because hyperacoustic wavelength is longer, it easily walks around chaff interference, the interference being subject to impurity in mixing material to be measured is less, this improves the accuracy and fiduciary level of measuring position, boundary.
Fig. 6 is the schematic flow sheet of position, boundary of the present invention measuring method embodiment.Position, the boundary measuring method that the embodiment of the present invention provides, utilize the boundary position of the interfacial meter shown in Fig. 1 to Fig. 5 to mixing material to be measured to measure, as shown in Figure 6, the method, comprising:
Step 601: interfacial meter is vertically placed in mixing material to be measured;
Wherein, ultrasonic transmitter-receiver is fixedly installed in the top dielectric of mixing material adjacent two layers medium to be measured in conduit, and float is positioned at the below of ultrasonic transmitter-receiver.Because the density of float is between the adjacent two layers medium of mixing material to be measured, therefore, in measuring process, float swims in position, the boundary place between the adjacent two layer medium of mixing material to be measured all the time.
Step 602: control ultrasonic transmitter-receiver and launch ultrasound wave to the direction of float and receive the ultrasound wave that this float returns;
In this step, after ultrasonic transmitter-receiver launches ultrasound wave, ultrasound wave is propagated in the top dielectric of mixing material to be measured, because float has ultrasonic reflections face near the side of ultrasonic transmitter-receiver, the sending and receiving end of ultrasonic transmitter-receiver is all towards float, so the ultrasound wave that ultrasonic transmitter-receiver is launched is after the ultrasonic reflections face reflex of float, and the receiving end returning ultrasonic transmitter-receiver is received.
Step 603: calculate ultrasonic transmitter-receiver from launching ultrasound wave to receiving this ultrasound wave time used;
Moment that ultrasonic transmitter-receiver record ultrasound wave is launched and returned the moment of reception, the interval of both calculating, ultrasonic transmitter-receiver can be obtained from launching ultrasound wave to receiving this ultrasound wave time used.
Step 604: the velocity of propagation in top dielectric according to above-mentioned time and ultrasound wave, calculates the distance between position, boundary and ultrasonic transmitter-receiver.
According to ultrasonic transmitter-receiver from launching ultrasound wave to receiving this ultrasound wave time used and the velocity of propagation of ultrasound wave top dielectric, the distance between out-of-bounds position and ultrasonic transmitter-receiver can be calculated.
Because interfacial meter is fixed in mixing material to be measured, the position of ultrasonic transmitter-receiver is also fixing, and therefore, in interfacial meter, the height of ultrasonic transmitter-receiver is known.Distance between the position, boundary obtained in conjunction with above-mentioned measurement and ultrasonic transmitter-receiver, just can calculate the height of out-of-bounds position.
About interfacial meter concrete structure and realize principle, see Fig. 1 to the introduction in embodiment illustrated in fig. 5, repeat no more herein.
Position, the boundary measuring method that the embodiment of the present invention provides, by interfacial meter is placed in mixing material to be measured, ultrasonic transmitter-receiver is utilized to transmit and receive ultrasound wave, utilize the float being in position, boundary place to return ultrasound wave, according to ultrasound wave from being transmitted into the received time, the distance between out-of-bounds position and ultrasonic transmitter-receiver can be calculated, and then the height of out-of-bounds position can be determined.This position, boundary measuring method is compared with the measuring method of existing radar interfacial meter circle position, the energy that float returns is stronger, and ultrasound wave wavelength is longer, when ultrasound wave relies on liquid medium to propagate, more easily walk around chaff interference, interference by the impurity in mixing material is less, can not produce false position, boundary, and then improves the accuracy and fiduciary level of measuring position, boundary.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an interfacial meter, for measuring the position, boundary of mixing material, it is characterized in that, described interfacial meter, comprising: conduit, ultrasonic transmitter-receiver and float;
Described ultrasonic transmitter-receiver is fixedly installed in described conduit, described float is positioned at described conduit, between the density of the two layer medium that the density of described float is adjacent in mixing material to be measured, described float has ultrasonic reflections face near the side of described ultrasonic transmitter-receiver, and the sending and receiving end of described ultrasonic transmitter-receiver is towards described float;
Described conduit, comprising: steady flow segment and eddy flow section;
The sidewall of described conduit is provided with through hole, and described through hole, comprising: current stabilization through hole revolves through hole with making; Described current stabilization through hole is positioned at described steady flow segment, described in make and revolve through hole and be positioned at described eddy flow section;
Described current stabilization through hole, for reducing the fluctuation of described mixing material to be measured at described steady flow segment, described in make and revolve through hole, produce eddy flow for making described mixing material to be measured in described eddy flow section;
Described ultrasonic transmitter-receiver is fixedly installed on described steady flow segment;
The side of described float is provided with blade, described blade, drives described float to rotate for the eddy flow produced according to described eddy flow section.
2. interfacial meter according to claim 1, it is characterized in that, described in make that to revolve through hole be strip, described in make the length direction revolving through hole consistent with the length direction of described conduit, described making revolves through hole, comprising: at least one makes screw-in mouth through hole and at least one makes screw outlet through hole;
Make described in each and screw in mouth through hole and be provided with and screw in described making the guide plate that mouth through hole is acute angle, each described guide plate screws in mouth through hole to the direction extension outside described conduit from making described in each, and each described guide plate is consistent at described conduit bearing of trend circumferentially;
Make screw outlet through hole described in each and be provided with spring bearer plate, one end of each described spring bearer plate be fixedly installed on each described in make one end of screw outlet through hole, the other end of each described spring bearer plate along described conduit circumferencial direction extend to each described in make outside screw outlet through hole; Described spring bearer plate, makes screw outlet through hole described in covering.
3. interfacial meter according to claim 1, is characterized in that, the quantity of described blade is at least three, and each described blade is evenly distributed on the side of described float.
4. interfacial meter according to claim 1, is characterized in that, described float is evenly provided with the floating hole being communicated with float end face and float bottom surface;
Described floating hole, for reducing the fluctuation of described float in described mixing material to be measured.
5. interfacial meter according to claim 4, is characterized in that, described float, also comprises: balancing weight;
Described balancing weight, for controlling the density of described float.
6. the interfacial meter according to any one of Claims 1 to 5, is characterized in that, also comprises: stop part;
Described stop part is fixedly installed on the inwall of described conduit, and described stop part is between described ultrasonic transmitter-receiver and described float.
7. the interfacial meter according to any one of Claims 1 to 5, is characterized in that, also comprises: circuit module;
Described circuit module is fixedly installed on the top of described conduit, and described circuit module is connected with described ultrasonic transmitter-receiver;
Described circuit module, launches ultrasound wave for controlling described ultrasonic transmitter-receiver, for calculating the position, boundary of described mixing material to be measured according to described hyperacoustic transmission time, also for the distance between position, described boundary and described ultrasonic transmitter-receiver being sent out.
8. interfacial meter according to claim 7, is characterized in that, also comprises: temperature measurement module;
Described temperature measurement module is fixedly installed in described conduit, described temperature measurement module, for detecting the temperature of described mixing material to be measured;
Described circuit module, also for carrying out temperature compensation according to described temperature to described mixing material to be measured.
9. interfacial meter according to claim 1, is characterized in that, the bottom of described conduit is also provided with guide hole, and the aperture of described guide hole is less than the external diameter of described float.
10. position, a boundary measuring method, is characterized in that, utilize the boundary position of the interfacial meter described in any one of claim 1 ~ 9 to mixing material to be measured to measure, described method, comprising:
Described interfacial meter is vertically placed in described mixing material to be measured; Wherein, described ultrasonic transmitter-receiver is fixedly installed in the top dielectric of described mixing material adjacent two layers medium to be measured in described conduit, the boundary position place of described buoys float between the two layer medium that described mixing material to be measured is adjacent;
Control described ultrasonic transmitter-receiver launch ultrasound wave to the direction of described float and receive the described ultrasound wave that described float returns;
Calculate described ultrasonic transmitter-receiver from launching described ultrasound wave to receiving the described ultrasound wave time used;
The velocity of propagation in described top dielectric according to described time and described ultrasound wave, calculates the distance between position, described boundary and described ultrasonic transmitter-receiver.
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| CN105203183B (en) | 2018-05-08 |
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