CN204330664U - Concentration of hydraulic mixture capacitive measuring device in pipeline - Google Patents

Concentration of hydraulic mixture capacitive measuring device in pipeline Download PDF

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Publication number
CN204330664U
CN204330664U CN201420853152.1U CN201420853152U CN204330664U CN 204330664 U CN204330664 U CN 204330664U CN 201420853152 U CN201420853152 U CN 201420853152U CN 204330664 U CN204330664 U CN 204330664U
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China
Prior art keywords
pipeline
concentration
clip
hydraulic mixture
electrode slice
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Expired - Fee Related
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CN201420853152.1U
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Chinese (zh)
Inventor
范世东
邓勇
朱汉华
刘建伟
曹福
江攀
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Yichang Changjiang River Waterway Engineering Office
Wuhan University of Technology WUT
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Yichang Changjiang River Waterway Engineering Office
Wuhan University of Technology WUT
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Priority to CN201420853152.1U priority Critical patent/CN204330664U/en
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Abstract

The utility model relates to a kind of measurement mechanism, be specially concentration of hydraulic mixture capacitive measuring device in pipeline, comprise clip, clip is provided with multiple electrode slice uniformly, when clip is stuck on pipeline outer wall, electrode slice is attached on the outer wall of pipeline, and clip is also with bell housing outward, has cushion block to separate between clip and bell housing.In the pipeline that the utility model provides, concentration of hydraulic mixture capacitive measuring device improves its safety coefficient and reduces cost of equipment simultaneously, concentration of hydraulic mixture in the long-distance pipe between data collection point and measurement point can be realized measure, eliminate large-size particles in pipeline, on the impact that concentration of hydraulic mixture in pipeline is measured, thus mud measuring accuracy in pipeline can be improved, in dredging work, concentration of hydraulic mixture measurement provides accurate foundation.

Description

Concentration of hydraulic mixture capacitive measuring device in pipeline
Technical field
The utility model relates to a kind of measurement mechanism, is specially concentration of hydraulic mixture capacitive measuring device in pipeline.
Background technology
Dredging operation has a very wide range of applications in ocean development, port construction, irrigation and water conservancy and environmental protection etc.Strand suction, rake suction type dredging operating system have dig dark scope large, to advantages such as the adaptability of soil property are good, be one of dredging plant of domestic and international main development.In order to reduce operating cost further, improve operating efficiency, domestic and international research institution and manufacturer studied with regard to the robotization starting pair twist suction type dredging operation process from the nineties in 20th century.In dredging operation process, concentration of hydraulic mixture is the key factor affecting dredging operation output and efficiency.Thus, in dredging operation process how fast and accurately in measuring channel concentration of hydraulic mixture be a very important job.
In current measuring channel, concentration of hydraulic mixture method is mainly concerned with following several mode: optics, ray, ultrasound wave, conductance type, condenser type.Optical profile type mainly utilizes dynamic light scattering technique to detect particle movement character, can the translation coefficient of diffusion of large molecule or particle in rapid and accurate determination solution, thus tries to achieve grain size or hydrodynamic radius.At present, this technology has been widely used in the fields such as medicine, space flight, environment, chemical industry, but due to the restriction of design bottleneck, current this method can only be used for the measurement of nano-particle diameter.
Ray type densimeter is that cause weakening of transmitted intensity due to photoelectric effect and scattering effect, this weakening between degree and material concentration follows certain rule when ray is through material.This kind of metering system measuring accuracy is high, but this covering device cost is high, requires high to operating personnel, and improper use can cause radial pattern to injure to surrounding environment and personnel, and this maintenance of equipment, transport, storage condition are all more harsh simultaneously.And service time is long, inner-walls of duct fouling will affect measuring accuracy, and under pipe with small pipe diameter condition, measuring error is larger.
Conductance type and the test of condenser type concentration of hydraulic mixture utilize to be distributed on conductivity that the multiple conductance/capacitive transducers on pipeline section collect or capacitance signal carrys out concentration of hydraulic mixture in computational analysis pipeline, and this measuring equipment is safeguarded simple and convenient, economic and practical and do not limited by pipe diameter size.But as there being the particle of greater particle size to exist in pipeline, carrying out concentration of hydraulic mixture test according to the method, having comparatively big error.
Utilizing ultrasonic wave principle to carry out concentration of hydraulic mixture in measuring channel is a kind of non-contact measurement apparatus.Ultrasound wave on test wall after multiple reflections again by its Signal reception, calculate demutation characteristic impedance in sample particle by carrying out analysis meter to received signal, calculate particle phase volume fraction and concentration according to reflection coefficient, acoustic characteristic impedance, acoustic attenuation coefficient and the velocity of sound.This kind of method can only detect high concentration, the high suspension of decay or the sample of emulsion form, and usable range is little.
Utility model content
The object of the invention is to provide a kind of safe, economic and concentration of hydraulic mixture proving installation in pipeline that is that do not affect by large-size particles in pipeline.
In pipeline, concentration of hydraulic mixture capacitive measuring device, comprises clip, and clip is provided with multiple electrode slice uniformly, and when clip is stuck on pipeline outer wall, described electrode slice is attached on the outer wall of pipeline, and described clamp connection head is connected by clamp bolt; Described clip is also with bell housing outward, has cushion block to separate between described clip and bell housing, and the interface of described bell housing is connected by coupling bolt.
Described clip comprises two relative draw-in grooves, draw-in groove is made up of outer and bottom respectively, the two ends of electrode slice are inserted in relative draw-in groove respectively, described skin and electrode slice surface of contact have asperities, bottom is film, have through wires hole bottom described draw-in groove, the wire of electrode slice passes from through wires hole, and two described draw-in grooves are connected by connecting bridge.
Described cushion block is arranged on outer field surface.
Also have bandage between two described draw-in grooves, strap envelops is at the outer middle side part of electrode slice, and when clip is stuck on pipeline outer wall, bandage tightens up to be pressed close to electrode slice binding on the outer wall of pipeline.
In the pipeline that the utility model provides, concentration of hydraulic mixture capacitive measuring device improves its safety coefficient and reduces cost of equipment simultaneously, concentration of hydraulic mixture in the long-distance pipe between data collection point and measurement point can be realized measure, eliminate large-size particles in pipeline, on the impact that concentration of hydraulic mixture in pipeline is measured, thus mud measuring accuracy in pipeline can be improved, in dredging work, concentration of hydraulic mixture measurement provides accurate foundation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is yoke configurations schematic diagram of the present utility model.
Fig. 3 is device of the present utility model and signal conditioning package connection diagram.
Embodiment
The specific implementation process of this patent is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, concentration of hydraulic mixture capacitive measuring device in pipeline, comprises clip 2, clip 2 is provided with uniformly multiple electrode slice 1, when clip 2 is stuck on pipeline 100 outer wall, described electrode slice 1 is attached on the outer wall of pipeline 100, and described clip 2 connector is connected by clamp bolt 4; Described clip 2 is outer is also with bell housing 3, and have cushion block 6 to separate between described clip 2 and bell housing 3, the interface of described bell housing 3 is connected by coupling bolt 5.
As shown in Figure 2, described clip 2 comprises two relative draw-in grooves, draw-in groove is made up of outer 21 and bottom 22 respectively, the two ends of electrode slice 1 are inserted in relative draw-in groove respectively, described skin 21 has asperities with electrode slice 1 surface of contact, and bottom 22 is film, has through wires hole 24 bottom described draw-in groove, the wire 7 of electrode slice 1 passes from through wires hole 24, and two described draw-in grooves are connected by connecting bridge 23.
Described cushion block 6 is arranged on the surface of outer 21.
Also have bandage 25 between two described draw-in grooves, bandage 25 is enclosed in the outer middle side part of electrode slice 1, and when clip 2 is stuck on pipeline 100 outer wall, bandage 25 tightens up and bundled on the outer wall of pipeline 100 by electrode slice 1.
In above pipeline, concentration of hydraulic mixture capacitive measuring device is capacitance sensing mechanism, test is combined with signal processing mechanism when using, described capacitance sensing mechanism is arranged on pipeline 100 outer wall, when concentration of hydraulic mixture in pipeline changes, variable signal is transported to signal processing mechanism by the capacitance sensing mechanism being arranged on pipeline outer wall; As shown in Figure 3, described signal processing mechanism, comprise connect successively signal source module 31, pole plate modular converter 32, ac-excited measurement module 33, exchange amplification module 34, multiplication module 35, filtration module 36, data comparison module 37; Electrode slice 1 is connected with signal source module 31 by wire 7; Signal source module 31 is connected with multiplication module 35 by phase shift block 30, and described pole plate modular converter 32 is connected with wireless transmission integration module 38 respectively with data comparison module 37, and described wireless transmission integration module 38 is connected with PC 39.
When concentration of hydraulic mixture in pipeline 100 changes, its specific inductive capacity also can change thereupon, the electric capacity be arranged between any two electrode slices of pipeline 100 outer wall can be changed along with concentration of hydraulic mixture change in pipeline, the capacitance at a time between any two pairs of electrode slices can be measured at short notice, according to recording capacitance data, concentration of hydraulic mixture in pipeline can be solved in conjunction with concentration computing formula.
Signal source module 31 sends pulse signal, for the input end of electric capacity/voltage conversion circuit provides voltage signal.Port input can control the voltage signal that this module exports different wave, sinusoidal wave, square wave, one of triangular wave.Choose appropriate capacitance, standardsizing rheostat, makes signal generating module send different frequency simultaneously, and waveform is good, the voltage signal of amplitude stabilization.
Pole plate modular converter 32, electrode slice 1 can be divided into: source electrode and potential electrode, and electrode slice number consecutively is 1 ~ 12, is first added in by voltage on electrode slice 1, using electrode slice 2 ~ 12 as potential electrode, can to 1-2,1-3 ..., between 1-12, capacitance is measured.The input of metering circuit is in virtual earth state, so be independent of each other between them, measure next time and then select 2 as source electrode, electrode 3,4 ... 12 become potential electrode, because between electrode pair 1-2, electric capacity is measured, thus electrode 1 be redundancy by its ground connection, successively with 3 for source electrode, so carry out until electrode 11 is source electrode, electrode slice 12 is detecting electrode, the equal ground connection of 1-10 electrode slice, totally 66 capacitances.
According to above-mentioned data acquisition sequence, PC 39 sends instruction and carrys out pole plate modular converter 32.Chip successively controlling plate connects source, ground connection, connects the different mode of operation of detection three kinds.Battery lead plate 1 respectively with chip 1, the NO15 port of 2,3 connects, in like manner, pole plate 2,3,4...11,12 respectively with chip 1, NO14-NO10, NO2-NO7 port of 2,3 is connected.Their control signal is provided by single-chip microcomputer respectively, chip 1 and 3 is MAX306 cake core, by control A0, A1, A2, A3 port signal makes arbitrary electrode slice and COM (H) in 1-12 electrode slice hold UNICOM, chip 2 is MAX307 chips, and this chip is by control A0, A1, A2, A3 port signal makes wantonly two electrode slices and COMA and COMB (ground connection) in 1-12 electrode slice hold to disconnect.
C xby being surveyed electric capacity, make to form capacitance measurement path between any two-plate by pole plate transformation.When measuring the electric capacity between certain one pair of electrodes, signal generator adds pumping signal in source electrode, selects appropriate C fvalue, and make signal source excitation frequency enough large: j ω C fr f> > 1, has by ac driven circuit effect, make to produce alternating current in circuit, such as formula shown in, magnitude of voltage V on detecting electrode 2with input voltage value V 1proportional, this detection pole tension value less (pico farad level), this voltage signal can amplify by ac amplifier circuit, makes its voltage amplification be by this module effect: correlation parameter in conditioning signal source, can make signal source send the voltage signal V of different wave 1', this signal madulation mainly becomes and the voltage signal V of ac amplifier circuit output voltage signal with frequency homophase by phase shift block 4.Output voltage signal V is amplified in interchange 3after outputing signal carry out multiplication process with phase shift block, output packet is containing the flip-flop V be directly proportional to the sinusoidal peak value that amplifier exports 5with other AC compounent V 6, finally use low-pass filtering filtering AC compounent, obtain DC component V 5represent measured capacitance size.Gained capacitance data, by after data comparison module process, sends PC to by wireless transport module, is calculated concentration of hydraulic mixture in pipeline by relative program.

Claims (4)

1. concentration of hydraulic mixture capacitive measuring device in pipeline, it is characterized in that: comprise clip, clip is provided with multiple electrode slice uniformly, when clip is stuck on pipeline outer wall, described electrode slice is attached on the outer wall of pipeline, and described clamp connection head is connected by clamp bolt; Described clip is also with bell housing outward, has cushion block to separate between described clip and bell housing, and the interface of described bell housing is connected by coupling bolt.
2. concentration of hydraulic mixture capacitive measuring device in pipeline according to claim 1, it is characterized in that: described clip comprises two relative draw-in grooves, draw-in groove is made up of outer and bottom respectively, the two ends of electrode slice are inserted in relative draw-in groove respectively, described skin and electrode slice surface of contact have asperities, and bottom is film, has through wires hole bottom described draw-in groove, the wire of electrode slice passes from through wires hole, and two described draw-in grooves are connected by connecting bridge.
3. concentration of hydraulic mixture capacitive measuring device in pipeline according to claim 1, is characterized in that: described cushion block is arranged on outer field surface.
4. concentration of hydraulic mixture capacitive measuring device in pipeline according to claim 2, it is characterized in that: between two described draw-in grooves, also have bandage, strap envelops is at the outer middle side part of electrode slice, and when clip is stuck on pipeline outer wall, bandage tightens up to be pressed close to electrode slice binding on the outer wall of pipeline.
CN201420853152.1U 2014-12-28 2014-12-28 Concentration of hydraulic mixture capacitive measuring device in pipeline Expired - Fee Related CN204330664U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105674869A (en) * 2016-03-30 2016-06-15 华北理工大学 Method and device for automatically measuring thicknesses of different mediums
CN107064227A (en) * 2017-03-22 2017-08-18 太原理工大学 A kind of device and method for monitoring paste filling pipe
CN112326740A (en) * 2020-10-21 2021-02-05 中交天津航道局有限公司 Electric chromatography mud concentration detection device for dredging conveying pipeline
CN113075267A (en) * 2021-03-29 2021-07-06 合肥鑫晟光电科技有限公司 Liquid concentration detection device
CN115070601A (en) * 2021-05-14 2022-09-20 台湾积体电路制造股份有限公司 Method and system for slurry quality monitoring

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105674869A (en) * 2016-03-30 2016-06-15 华北理工大学 Method and device for automatically measuring thicknesses of different mediums
CN105674869B (en) * 2016-03-30 2018-10-09 华北理工大学 A kind of method for automatic measurement and its measuring device of different medium thickness
CN107064227A (en) * 2017-03-22 2017-08-18 太原理工大学 A kind of device and method for monitoring paste filling pipe
CN107064227B (en) * 2017-03-22 2020-01-31 太原理工大学 device and method for monitoring paste filling pipeline
CN112326740A (en) * 2020-10-21 2021-02-05 中交天津航道局有限公司 Electric chromatography mud concentration detection device for dredging conveying pipeline
CN113075267A (en) * 2021-03-29 2021-07-06 合肥鑫晟光电科技有限公司 Liquid concentration detection device
CN115070601A (en) * 2021-05-14 2022-09-20 台湾积体电路制造股份有限公司 Method and system for slurry quality monitoring

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150513

Termination date: 20151228

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