CN2315563Y - Vibrative on-line viscosity transmitter - Google Patents
Vibrative on-line viscosity transmitter Download PDFInfo
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- CN2315563Y CN2315563Y CN 98203261 CN98203261U CN2315563Y CN 2315563 Y CN2315563 Y CN 2315563Y CN 98203261 CN98203261 CN 98203261 CN 98203261 U CN98203261 U CN 98203261U CN 2315563 Y CN2315563 Y CN 2315563Y
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- electromagnet
- fixed
- support
- gain amplifier
- controllable gain
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Abstract
The utility model relates to a vibration type on-line viscosity transmitter, which is composed of machinery components and electric appliance control components The machinery components comprise a cavity body which is formed by an explosion-proof shell 2 which is fixed on a flange 5, and a vibrating body which is fixed on a supporting frame 11 in the cavity body, a driving electromagnet 15 and a measuring electromagnet 4. A steel driving connecting rod in the vibrating body passes through the flange, the upper part of the steel driving connecting rod is fixed with a horizontal cross beam 9 which does not have magnet conducting, and the lower part of the steel driving connecting rod is coaxially sheathed with an elastic outer cylinder 7. The bottom end of the steel driving connecting rod is fixed with a spheric probe 8, wherein, the driving electromagnet 15 and electric loops in the measuring electromagnet 4 are respectively connected with the output end and the input end of a controllable gain amplifier 18 which is arranged in the electric appliance control components, and the output signals of the controllable gain amplifier 18 compare with the reference voltage through magnifying. The difference value feeds back to the controllable gain amplifier 18, the increased output signals of the controllable gain amplifier represent fluid viscosity.
Description
The utility model is the online viscosity transmitter of a kind of oscillatory type.
In the polymerization technique of petrochemical complex, the viscosity that in time detects polymkeric substance is the problem that presses for solution, at present, domestic widely used viscometric method is a dilution method, after being about to the polymkeric substance dilution, use determination of ubbelohde viscometer viscosity, this method is measured a sample and need be difficult to meet the needs of production with 2 hours.So people press for online viscosity measurement instrument, this type of instrument mainly contains two classes, one class is online rotational viscosimeter, fluid to be measured is flowed through in the crack of coaxial inside and outside two cylinders, urceolus is reversed by motor, because the effect of shearing force, inner core will be because of moment of torsion deflection certain angle, and the size that the torque sensor that links to each other with inner core is measured moment of torsion is represented the viscosity number of fluid to be measured.The range ability of this quasi-instrument is little, can't measure the viscosity of visco-elastic material.
Another kind of instrument is the oscillatory type in-line viscometer, and principle is to measure the viscosity of liquid by the amplitude variations that vibrating mass is produced in fluid to be measured.USP5,317,908 disclose the online viscosity transmitter of a kind of oscillatory type, can be used for measuring the instantaneous viscosity of high viscosity fluid under the High Temperature High Pressure, this viscosity transmitter comprises that mainly a shell reaches from the extended hollow body of shell, this hollow body is positioned at the inside of housing, end away from housing on the hollow body is the overcoat of belt sensor, be with an axle that passes hollow body in the overcoat with one heart, the end of the tip of the axis and overcoat is fixed together, also be provided with the transverse arm that is fixed on the axle in the housing, electromagnetic driver produces magnetic field in the twisting vibration of sensor and axle, detector coil is measured the amplitude variations that is fixed on the transverse arm on the axle, and the placement that is perpendicular to one another of described detecting device and actuator electrical magnetic coil is crosstalked and transducer size reducing.The sensor that inserts in the liquid in this instrument has temperature thermocouple, and shell is to shield magnetic, and electronic control unit includes the compensating device of flow velocity and effect that fluid pressure produces.Obviously, the structure of this viscosity meter is comparatively complicated.
The purpose of this utility model provides a kind of simple in structure, can measure the instantaneous viscosity number of high viscosity fluid, and the wide online viscosity transmitter of oscillatory type of range ability.
The utility model is according to the electromagnetic resonance principle design, its principle of work is to drive electromagnet, measure electromagnet, vibrating mass and controllable gain amplifier constitute " tuning-fork type " oscillatory system, when unloaded, vibrating mass keeps continuous oscillation, after the spheric probe in the vibrating mass immerses detected fluid, owing to be subjected to the effect of fluid viscosity resistance, oscillation amplitude is descended, so measuring the output signal of electromagnet descends, at this moment owing to retroactive effect, controllable gain amplifier promptly increases the output of drive signal, makes vibrating mass get back to original oscillation amplitude, this moment, instrument detected the output power of increase, just represented the viscosity of liquid.
The viscosity transmitter that the utility model provides is made up of machinery and electrical equipment control two big parts, and specifically, mechanical part comprises explosion-proof shell, ring flange, vibrating mass, support and is fixed on the driving electromagnet on the support and measures electromagnet.Explosion-proof shell is fixed on and forms a cavity on the ring flange, explosion-proof shell is provided with cable and directly draws the hole, support is fixed on the center of cavity inner flange, be provided with the cylindrical, hollow of symmetrical grooves for the bottom, vibrating mass drives link rod by rigidity, the elasticity urceolus, spheric probe and non-magnetic conduction horizontal gird are formed, be embedded with symmetrically on the wherein non-magnetic conduction horizontal gird and drive permanent magnet and measure permanent magnet, rigidity drives link rod and passes ring flange, the fixing non-magnetic conduction horizontal gird that can in the groove of support, swing in its top, the bottom is to be enclosed within its outer elasticity urceolus coaxially, elasticity urceolus upper end is connected with the ring flange vertical seal, lower end and spheric probe are tightly connected, the bottom that rigidity drives link rod also is tightly connected with spheric probe, its top is fixed on the end face of support by the elastic wire that is cross spread, and makes the driving link rod keep plumbness.Drive electromagnet and measurement electromagnet and be separately fixed at the support both sides corresponding to driving permanent magnet and the position of measuring permanent magnet, its end face is parallel with non-magnetic conduction horizontal gird,
Electrical equipment control device comprises controllable gain amplifier, preceding amplifier, amplitude detector, two comparers and phase shifter.The input of controllable gain amplifier, output terminal respectively with mechanical part in the measurement electromagnet, the driving electromagnet links to each other, preceding amp.in links to each other with the controllable gain amplifier input end, output terminal divides two-way, one the tunnel links to each other with the amplitude detector input end, another road links to each other with phase shifter, two input ends of a described comparer link to each other with the output terminal of reference voltage and amplitude detector respectively, output terminal links to each other with controllable gain amplifier, two input ends of another comparer link to each other with the output terminal of phase shifter output terminal and controllable gain amplifier respectively, and the output signal of its output terminal is promptly represented the viscosity number of detected fluid.
The driving electromagnet that is fixed on the support both sides in the described mechanical part is differential two groups of being connected with the measurement electromagnet, be individually fixed on the support on non-magnetic conduction horizontal gird both sides, the driving electromagnet of i.e. two differential connections is fixed on a side of the support that is positioned at non-magnetic conduction horizontal gird both sides symmetrically, the measurement electromagnet of two differential connections is fixed on the opposite side of support symmetrically, its position corresponds respectively to and drives permanent magnet and measure permanent magnet, and end face is parallel with non-magnetic conduction horizontal gird, at a distance of 0.3 millimeter.
Described support is the cylindric ducted body that the bottom is provided with two grooves symmetrically, is made by mild carbon steel, and it is hollow tube that rigidity drives link rod.
Described driving electromagnet is identical with measurement electromagnet structure, comprise the coil, magnetic conductor and the magnetic core array that are wound on the coil rack, magnetic core array is by high permeability material, make as high Rhometal, it is shaped as a reducing solid cylinder, and thick end portion is provided with fairlead, and magnetic conductor is a cylindrical shape, be threaded with the butt end of magnetic core array, coil stationary is in the both sides of the thin end of magnetic conductor inner magnetic core body.
Described explosion-proof shell be provided with two symmetrically cable directly draw the hole, directly draw the hole and measure electromagnet and drive electromagnet and link to each other so that the input of controllable gain amplifier, output terminal passed by cable, also be provided with connecting terminal block and special-purpose ground terminal in the explosion-proof shell, join so that measure, drive the coil and the cable of electromagnet.
The utility model transmitter is applicable to the online viscosimetric analysis of high viscosity fluid, as high-viscosity material online viscosity measurements in process of production such as polymkeric substance, bonding agent, paper pulp, pitch, jam, petroleum products, paint, printing-ink, drilling fluids, to guarantee product quality.The utility model transmitter also can be used for the viscosity measurement of memory fluid.
The utility model structure of transmitter is simple, and driving and measurement electromagnet all have AC and DC magnetic circuit separately, therefore can be arranged side by side, and do not have crosstalk phenomenon, measure highly sensitive.In addition, the utility model also has wide range ability, can be at high temperature, high pressure, and the environment work down that change in flow is bigger, the viscosity signal of output also is convertible into digital signal input computing machine, is beneficial to production run is optimized control.
Describe the utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is a mechanical part structural representation of the present utility model.
Fig. 2 is a structural representation of measuring electromagnet among Fig. 1.
Fig. 3 is for measuring the installation site diagrammatic cross-section of electromagnet and driving electromagnet.
Fig. 4 is the structured flowchart of the utility model electrical equipment control device.
Mechanical part of the present utility model as shown in Figure 1 comprises explosion-proof shell 2, ring flange 5, support 11, vibrating mass, measurement electromagnet 4, drives electromagnet 15 (be positioned at the left side of Fig. 1 medium-height trestle, with measurement electromagnet rotational symmetry, see Fig. 3 for details).Explosion-proof shell 2 is fixed on and forms a cavity on the ring flange 5, the center fixed support 11 of ring flange 5 in the cavity, support 11 is provided with the cylindrical, hollow of two symmetrical grooves for the bottom, vibrating mass drives link rod 6 by rigidity, elasticity urceolus 7, spheric probe 8 and non-magnetic conduction horizontal gird 9 are formed, wherein, be embedded with symmetrical driving permanent magnet 10 on the non-magnetic conduction horizontal gird 9 and measure permanent magnet 16 (see figure 3)s, rigidity drives link rod 6 and passes ring flange 5, it is a hollow tube, non-magnetic conduction horizontal gird 9 is fixed on top, this crossbeam 9 is positioned between the groove of support 11, can swing, rigidity drives the bottom of link rod 6 and overlaps flexible urceolus 7 coaxially, elasticity urceolus 7 upper ends and ring flange 5 bottom surface vertical seal welding, lower end and spheric probe 8 seal weldings, the lower end that rigidity drives link rod 6 also vertically is welded on the spheric probe 8, its top is fixed 4 other ends that are 12, four elastic wires of elastic wire of cross spread with little annular pressing plate and is fixed on the end face of support 11 with big annular pressing plate.On the support 11 on non-as shown in Figure 3 magnetic conduction horizontal drive crossbeam 9 both sides, the measurement electromagnet 4 that two differential connections are arranged corresponding to the stationkeeping of measuring permanent magnet 16, on the support 11 of non-magnetic conduction horizontal gird 9 opposite sides, the driving electromagnet 15 of two differential connections is arranged corresponding to the stationkeeping that drives permanent magnet 10.The end face that drives electromagnet 15 and measure electromagnet 4 is parallel with non-magnetic conduction horizontal gird 9, apart 0.3 millimeter.
Also be provided with connecting terminal block 3 on the described support 11, the coil that drives electromagnet 15 and measurement electromagnet 4 can be connected on the terminal row 3, join with driving, the measurement port of electrical equipment control device respectively by cable again.
In the transmitter that the utility model provides, drive electromagnet 15 and have identical structure with measurement electromagnet 4, but have different coil turns, as shown in Figure 2, described electromagnet comprises the coil 25 that is wound on the coil rack 29, magnetic core array 28 and magnetic conductor 27, magnetic core array 28 is a reducing solid, and a thick end is provided with two fairleads 30, and magnetic conductor 27 is a cylindrical shape, be threaded with the butt end of magnetic core array 28, coil 25 can be pressed on the both sides of magnetic core array 28 thin ends.Drive electromagnet 15 and measure electromagnet 4 and can be fixed on easily on the support 11 by magnetic core set nut 24 and magnetic conductor set nut 26.Described coil is formed by the enameled wire coiling, drives 0.3～0.4 millimeter of electromagnet enameled wire diameter, and the coiling number of turn is 400～450, and measuring coil enameled wire diameter is 0.07～0.09 millimeter, and the coiling number of turn is 4500～5000.Described magnetic core array 28, magnetic conductor 27 all adopt high Rhometal to make, and coil rack 29 is made for teflon.
Electrical equipment control device of the present utility model comprises controllable gain amplifier 18, preceding amplifier 17, amplitude detector 19, two comparers 21,23 and phase shifters 22, is provided with and drives and measure two Wiring ports.Its structured flowchart is seen Fig. 4, the input end of controllable gain amplifier 18 and preceding amplifier 17 all is connected on the measurement port, the output terminal of controllable gain amplifier 18 is connected on the driving port, the output of preceding amplifier 17 divides two-way, one the tunnel links to each other with the input end of amplitude detector 19, another road links to each other with the input end of phase shifter 22, two input ends of comparer 21 join with the output terminal of reference voltage 20 and amplitude detector 19 respectively, output terminal links to each other with controllable gain amplifier 18, two input ends of another comparer 23 link to each other with the driving port with the output terminal of phase shifter 22 respectively, and the signal of output terminal output is promptly represented viscosity number.
When the utility model transmitter uses, mechanical part can be installed in finished product jar porch, the coil that drives electromagnet 15 and measure electromagnet 4 is connected on respectively on two terminals on the connecting terminal block 3, two four-core shielded cables are tapped on two above-mentioned terminals, passing cable more directly draws hole 13 and draws explosion-proof shell 2, link to each other with driving, measurement port in the electrical equipment control device respectively, be fixed on the explosion-proof shell 2 with cable pressure cap 1,14, pressure cap and cable are lined with sealing gasket in the middle of directly drawing hole 13.
The principle of work of the utility model transmitter is: when unloaded, the measured electromagnet 4 of the weak vibration of spheric probe 8 is converted to electric signal in the mechanical part, input controllable gain amplifier 18, deliver to after the amplification and drive electromagnet 15 promotion vibrating mass vibrations, when being amplified to certain multiple, the system held continuous oscillation.When carrying out viscosity measurement, spheric probe 8 in the vibrating mass inserts detected fluid, because of being subjected to the hydrodynamic shear effect, Oscillation Amplitude reduces, measuring voltage descends, after this voltage reduction signal is amplified by preceding amplifier 17, after amplitude detector 19 detections, become DC voltage, after this DC voltage and reference voltage 20 compare through comparer 21, its difference feeds back to controllable gain amplifier 18, controllable gain amplifier promptly increases the output of driving power, makes vibrating mass get back to original amplitude, and another road signal of preceding amplifier 17 outputs is through phase shifter 22 phase shifts, behind driving voltage maintenance homophase, the square value of the difference after comparer 23 compares is promptly represented the output power that increases, and also just represents the viscosity of fluid.
Claims (6)
1, the online viscosity transmitter of a kind of oscillatory type, comprise the cavity that forms by the explosion-proof shell that is fixed on the ring flange, and be fixed on vibrating mass, the driving electromagnet on the cavity inner support and measure mechanical part and the electrical equipment control device that electromagnet is formed, it is characterized in that:
Explosion-proof shell in the mechanical part (2) is provided with cable and directly draws hole (13), support (11) is fixed on the center of cavity inner flange (5), be provided with the cylindrical, hollow of two grooves symmetrically for the bottom, vibrating mass drives link rod (6) by rigidity, elasticity urceolus (7), spheric probe (8) and non-magnetic conduction horizontal gird (9) are formed, be embedded with symmetrically on the non-magnetic conduction horizontal gird (9) and drive permanent magnet (10) and measure permanent magnet (16), rigidity drives link rod (6) and passes ring flange (5), the fixing non-magnetic conduction horizontal gird (9) that can in the groove of support (11), swing in top, the bottom is overlapped flexible urceolus (7) coaxially, elasticity urceolus (7) upper end is connected with ring flange (5) vertical seal, lower end and spheric probe (8) are tightly connected, the bottom that rigidity drives link rod (6) also is tightly connected with spheric probe (8), the top is fixed on the end face of support (11) by the elastic wire that is cross spread (12), and maintenance plumbness, drive electromagnet (15) and measure electromagnet (4) and be separately fixed at support (11) both sides corresponding to the position that drives permanent magnet (10) and measurement permanent magnet (16), its end face is parallel with non-magnetic conduction horizontal gird (9)
Described electrical equipment control device comprises controllable gain amplifier (18), preceding amplifier (17), amplitude detector (19), two comparers (21), (23) and phase shifter (22), the input of controllable gain amplifier (18), output terminal respectively with mechanical part in measurement electromagnet (4), the coil that drives in the electromagnet (15) links to each other, preceding amplifier (17) input end links to each other with the input end of controllable gain amplifier (18), output divides two-way, respectively with amplitude detector (19), the input end of phase shifter (22) joins, two the input end tap reference voltages (20) of a described comparer (21) and the output terminal of amplitude detector (19), output termination controllable gain amplifier (18), two input end tap phase shifters (22) of another comparator circuit (23) and the output terminal of controllable gain amplifier (18).
2, according to the described transmitter of claim 1, the driving electromagnet (15), the measurement electromagnet (4) that it is characterized in that being positioned at support (11) both sides are two groups of differential connection, are individually fixed on the support (11) on non-magnetic conduction horizontal gird (9) both sides.
3, according to the described transmitter of claim 1, the driving electromagnet (15) that it is characterized in that being fixed in the described mechanical part on the support (11) is parallel with non-magnetic conduction horizontal gird (9) with the end face of measuring electromagnet (4), and at a distance of 0.3 millimeter.
4, according to claim 1 or 2 described transmitters, it is characterized in that described support (11) is the cylindric ducted body that the bottom is provided with two grooves symmetrically, it is hollow tube that rigidity drives link rod (6).
5, according to claim 1 or 2 described transmitters, it is characterized in that described driving electromagnet (15) and measure electromagnet (4) comprising coil (25), magnetic conductor (27) and magnetic core array (28), magnetic core array (28) is a reducing solid cylinder, thick end portion has two fairleads (30), magnetic conductor (27) is a tubular, be threaded with the butt end of magnetic core array (28), coil (25) is fixed in the both sides of the thin end of magnetic conductor (27) inner magnetic core body (28).
6, according to the described transmitter of claim 1, the top that it is characterized in that explosion-proof shell (2) is provided with two cables symmetrically and directly draws hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203261 CN2315563Y (en) | 1998-04-10 | 1998-04-10 | Vibrative on-line viscosity transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203261 CN2315563Y (en) | 1998-04-10 | 1998-04-10 | Vibrative on-line viscosity transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2315563Y true CN2315563Y (en) | 1999-04-21 |
Family
ID=33960132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98203261 Expired - Fee Related CN2315563Y (en) | 1998-04-10 | 1998-04-10 | Vibrative on-line viscosity transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2315563Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799321A (en) * | 2010-04-08 | 2010-08-11 | 四川拓普测控科技有限公司 | Intelligent vibration monitor system |
| CN101165468B (en) * | 2006-10-18 | 2011-08-10 | 现代自动车株式会社 | Symmetric viscosity sensor |
| CN102175575A (en) * | 2011-01-28 | 2011-09-07 | 天津大学 | Miniature electromagnetic induction type oil viscosity measuring device and method |
| CN102175577A (en) * | 2011-02-09 | 2011-09-07 | 天津大学 | Torsion oscillation type viscosity online measuring device for fiber Bragg grating and method for same |
| CN102322251A (en) * | 2011-06-14 | 2012-01-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous mixing truck with online viscosity detecting device |
| WO2014201710A1 (en) * | 2013-06-18 | 2014-12-24 | 广州天禾自动化实业有限公司 | Sensor for detecting property of fluid |
| CN106596344A (en) * | 2017-02-13 | 2017-04-26 | 长春理工大学 | Viscosity detecting sensor based on electromagnetic induction |
-
1998
- 1998-04-10 CN CN 98203261 patent/CN2315563Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165468B (en) * | 2006-10-18 | 2011-08-10 | 现代自动车株式会社 | Symmetric viscosity sensor |
| CN101799321A (en) * | 2010-04-08 | 2010-08-11 | 四川拓普测控科技有限公司 | Intelligent vibration monitor system |
| CN102175575A (en) * | 2011-01-28 | 2011-09-07 | 天津大学 | Miniature electromagnetic induction type oil viscosity measuring device and method |
| CN102175575B (en) * | 2011-01-28 | 2012-08-29 | 天津大学 | Miniature electromagnetic induction type oil viscosity measuring device and method |
| CN102175577A (en) * | 2011-02-09 | 2011-09-07 | 天津大学 | Torsion oscillation type viscosity online measuring device for fiber Bragg grating and method for same |
| CN102175577B (en) * | 2011-02-09 | 2013-03-20 | 天津大学 | Torsion oscillation type viscosity online measuring device for fiber Bragg grating and method for same |
| CN102322251A (en) * | 2011-06-14 | 2012-01-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous mixing truck with online viscosity detecting device |
| WO2014201710A1 (en) * | 2013-06-18 | 2014-12-24 | 广州天禾自动化实业有限公司 | Sensor for detecting property of fluid |
| CN106596344A (en) * | 2017-02-13 | 2017-04-26 | 长春理工大学 | Viscosity detecting sensor based on electromagnetic induction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |