CN207300806U

CN207300806U - Viscosimeter

Info

Publication number: CN207300806U
Application number: CN201721320254.7U
Authority: CN
Inventors: 刘凤珍; 刘洋
Original assignee: Its Intelligent Control (tianjin) Trading Co Ltd
Current assignee: Its Intelligent Control (tianjin) Trading Co Ltd
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2018-05-01
Anticipated expiration: 2027-10-13

Abstract

The utility model provides a kind of viscosimeter, including：Servomotor, viscosity sensing device；The servomotor includes：Servomotor body, motor shaft, rotor, permanent magnet, encoder；The first end of the motor shaft is arranged on the servomotor body interior, rotor, permanent magnet, encoder are fixedly connected with the first end of motor shaft, and the second end of the motor shaft is stretched out the servomotor body and is directly fixedly connected with the viscosity sensing device.The viscosity sensing device produces hysteresis because rotating it being subject to the effect of sticky torque in testing liquid, and the encoder reads the angle of lag of the motor shaft feedback, and the hydrodynamic viscosity of testing liquid is calculated according to angle of lag.The utility model simple structure, the rotation of motor shaft and viscosity sensing device are not easy by external environmental interference, so as to improve adaptability of the viscosimeter in a variety of industrial flows, improve the accuracy of viscosimeter measure hydrodynamic viscosity.

Description

Viscosimeter

Technical field

It the utility model is related to testing equipment field, more particularly to a kind of viscosimeter.

Background technology

Viscosimeter is the detection device for measuring hydrodynamic viscosity.Hydrodynamic viscosimetric analysis is in industrial department and section Research field is learned to play an important role.Especially in the industrial flows such as medicine, food, chemical industry, with greater need for Accurate Determining and control Hydrodynamic viscosity, to improve the quality of product.

Existing viscosimeter is as shown in Figure 1, the device includes：It is motor output shaft 1, upper disk 2, lower wall 3, flexible member 4, small Cylinder 5.Motor output shaft 1 is connected with upper disk 2, makes disk 2 and 1 synchronous constant speed rotary of motor output shaft.Upper disk 2 and lower wall 3 are not It is connected directly, and the both ends with flexible member 4 are connected respectively.Lower wall 3 with immerse testing liquid small cylinder 5 be connected, lower wall 3 by Make its rotational hysteresis in upper disk 2 in the sticky moment loading for being subject to small cylinder 5, after 3 rotational hysteresis certain angle of lower wall, under Disk 3 is stablized with upper disk 2 to be rotated synchronously.Since motor rotatory force and testing liquid effect cause the rotation of upper disk 2 and lower wall 3 generation Differential seat angle, the hydrodynamic viscosity of testing liquid can be calculated according to rotational angle difference.

But the upper disk 2 and lower wall 3 due to existing viscosimeter are connected by flexible member 4, cause by the upper disk 2 of viscous meter, Lower wall 3 and flexible member 4 are easily subject to the interference of boiling liquid and generation activity in reaction kettle or blender, cause measurement to be tied Fruit is inaccurate.Meanwhile when the upper disk 2 of viscosimeter and lower wall 3 are vertically disposed in horizontally disposed production flow line, upper disk 2, under Disk 3 and flexible member 4 under gravity, make the rotational angle difference that disk 2 is produced with lower wall 3 produce error, cause to measure As a result it is inaccurate.

Therefore, there is an urgent need for a kind of simple structure, the viscosimeter disturbed by extraneous reaction environment is not easy, to improve viscosimeter more Adaptability in kind industrial flow, improves the accuracy of viscosimeter measure hydrodynamic viscosity, while improves the application of viscosimeter Scope.

Utility model content

The utility model provides a kind of viscosimeter, with solve in the prior art existing viscosimeter in reaction kettle or blender In be easily subject to boiling liquid interference and generation activity, the problem of causing measurement result inaccurate, to improve viscosimeter more Adaptability in kind industrial flow, improves the accuracy of viscosimeter measure hydrodynamic viscosity, while improves the application of viscosimeter Scope.

The utility model provides a kind of viscosimeter, it is characterised in that including：Servomotor, viscosity sensing device；

The servomotor includes：Servomotor body, motor shaft, encoder；

The first end of the motor shaft is arranged on the servomotor body interior, and the second end of the motor shaft stretches out institute State servomotor body and be directly fixedly connected with the viscosity sensing device, the encoder is arranged on the servomotor sheet Internal portion, the rotational angle that the viscosity sensing device for reading the motor shaft feedback rotates in testing liquid.

In an embodiment of the utility model, above-mentioned viscosity sensing device is cylinder or spheroidal.

In an embodiment of the utility model, above-mentioned viscosimeter further includes guiding device, and the guiding device is arranged on On the outer wall of the viscosity sensing device, the guiding device is used to prevent the testing liquid from directly impacting the viscosity sensing Device.

In an embodiment of the utility model, above-mentioned guiding device is diversion pipe or flow apron.

In an embodiment of the utility model, above-mentioned servomotor further includes shell, servo-driver；

The servo-driver, the servomotor body are arranged on the enclosure, the servo-driver and institute State the electrical connection of servomotor body.

In an embodiment of the utility model, above-mentioned servomotor body further includes：Permanent magnet；

The first end of the motor shaft is arranged on the side of the permanent magnet, and the encoder is arranged on the permanent magnet Opposite side, the first end of the motor shaft are contradicted with the permanent magnet and connected.

In an embodiment of the utility model, encoder described above is absolute value encoder, the absolute encoder The resolution ratio of device is 2¹⁴。

In an embodiment of the utility model, above-mentioned encoder is increment size encoder, the increment size encoder Resolution ratio is no less than 1000 lines.

In an embodiment of the utility model, above-mentioned permanent magnet, the encoder, the viscosity sensing device are coaxially set Put.

In an embodiment of the utility model, above-mentioned guiding device extends along the outer wall of the viscosity sensing device, and Beyond the extension of the outer wall, for preventing the testing liquid from directly impacting the viscosity sensing device.

In an embodiment of the utility model, above-mentioned viscosimeter further includes：Connecting rod；

The guiding device is connected with the viscosity sensing device by the connecting rod, so that the guiding device and institute State there are gap between the outer wall of viscosity sensing device, the gap be more than or equal to the viscosity sensing device diameter three/ One.

As shown from the above technical solution, viscosimeter provided by the utility model includes：Servomotor, viscosity sensing device； The servomotor includes：Servomotor body, motor shaft, encoder；The first end of the motor shaft is arranged on the servo Inside motor body, the second end stretching servomotor body of the motor shaft is simultaneously directly solid with the viscosity sensing device Fixed connection, the encoder are arranged on the servomotor body interior, for reading the viscosity of the motor shaft feedback The rotational angle that sensing device rotates in testing liquid.The utility model simple structure, motor shaft and viscosity sensing device Rotation is not easy to be disturbed by extraneous reaction environment, so as to improve adaptability of the viscosimeter in a variety of industrial flows, improves viscosimeter The accuracy of hydrodynamic viscosity is measured, while improves the application range of viscosimeter.

Brief description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, other attached drawings can also be obtained according to these attached drawings.

Fig. 1 is the structure diagram of viscosimeter of the prior art；

Fig. 2A is a kind of half-sectional view for viscosimeter that one embodiment of the utility model provides；

Fig. 2 B are the profile for another viscosimeter that one embodiment of the utility model provides；

Fig. 2 C are the structure diagram of installing plate in Fig. 2 B；

Fig. 2 D are a kind of schematic diagram of the mounting means for the viscosimeter that Fig. 2 B are provided；

Fig. 2 E are the enlarged diagram of a-quadrant in Fig. 2 D；

Fig. 2 F are the enlarged diagram of B area in Fig. 2 D；

Fig. 2 G are the schematic diagram of another mounting means for the viscosimeter that Fig. 2 B are provided；

Fig. 3 A are the structure diagram for the servomotor that one embodiment of the utility model provides；

Fig. 3 B are the top view for another servomotor that one embodiment of the utility model provides；

Fig. 4 is the top view for another servomotor that one embodiment of the utility model provides.

Description of reference numerals：

10：Servomotor； 101：Shell；

1011：Upper shell； 1012：Lower housing shell；

1013：Holding section； 102：Servomotor body；

103：Motor shaft； 1031：First end；

1032：Second end； 1033：Rotor；

1034：Motor stator； 104：Permanent magnet；

105：Encoder； 1051：Encoder circuit；

1052：Encoder circuit plate； 106：Servo-driver；

1061：Rear end cap； 1062：Power circuit board；

1063：Control board； 1064：Power supply circuit board；

1065：Silica gel heat-conducting plate； 107：Aviation socket；

108：Installing plate； 1081：Mounting hole；

109：Sealing ring； 110：Fastening bolt；

11：Viscosity sensing device； A、B：Region；

D：Testing liquid flow direction； L：Axis.

Embodiment

As shown in Figure 2 A, the present embodiment provides a kind of viscosimeter to include：Servomotor 10, viscosity sensing device 11； Wherein, servomotor 10 can include：Shell 101, servomotor body 102, motor shaft 103, encoder 105；

Specifically, servomotor body 102 is arranged on inside shell 101, motor shaft 103 includes first end 1031 and second End 1032；The first end 1031 of motor shaft 103 is arranged on inside servomotor body 102, and the second end 1032 of motor shaft 103 is stretched Go out servomotor body 102 and be directly fixedly connected with viscosity sensing device 11.Meanwhile encoder 105 is arranged on servomotor Inside body 102, for reading the rotational angle that is rotated in testing liquid of viscosity sensing device 11 of the feedback of motor shaft 103.

It is fixedly connected between the second end 1032 of motor shaft 103 and viscosity sensing device 11, does not produce movement mutually, work as electricity Arbor 103 when being rotated can with kinetic viscosity sensing device 11 in testing liquid with identical rotational speed.By by electricity The second end 1032 of arbor 103 is directly fixedly connected with viscosity sensing device 11, avoids the prepare liquid in reaction kettle or blender Rotation of the body in reaction to motor shaft 103 and viscosity sensing device 11 has an impact, and improves viscosimeter measure hydrodynamic and glues The accuracy of degree.

Meanwhile the servomotor body 102 in the present embodiment further includes permanent magnet 104, rotor 1033, motor stator 1034.Wherein, rotor 1033, permanent magnet 104 are arranged in the first end 1031 of motor shaft 103.Specifically, rotor 1033 can be the hollow magnet ring being fixed in the first end 1031 of motor shaft 103；Correspondingly, it is arranged on servomotor sheet Motor stator 1034 inside body 102 is set in outside rotor 1033.Meanwhile permanent magnet 104 can be arranged on motor shaft The top of 103 first end 1031, and contradict connection with the top of the first end 1031 of motor shaft 103.

Correspondingly, encoder 105 can be arranged on the inside of servomotor body 102 and positioned at permanent magnet 104 away from motor The side on 1031 top of first end of axis 103, i.e. permanent magnet 104 are arranged on the first end 1031 of encoder 105 and motor shaft 103 Between top.Meanwhile encoder 105 and 104 contactless inductive connection of permanent magnet, encoder 105 are anti-for reading permanent magnet 104 The rotational angle that the viscosity sensing device 11 of feedback rotates in testing liquid.

Wherein, encoder 105 can include：Encoder circuit 1051, encoder circuit plate 1052；Encoder circuit 1051 It is fixed on encoder circuit plate 1052.Meanwhile the permanent magnet 104 provided in the present embodiment is specifically as follows encoder use Two-stage permanent magnet, encoder have N poles, S poles with two-stage permanent magnet, for making encoder 105 read the viscosity sensing of its feedback The rotational angle that device 11 rotates in testing liquid.

Correspondingly, the servomotor 10 in the present embodiment further includes：Servo-driver 106, servo-driver 106 and servo Motor body 102 is electrically connected.Servo-driver 106 is by driving motor stator 1034 to produce Vector Rotation electromagnetic field, motor Rotor 1033 drives motor shaft 103 together to rotate under the active force of Vector Rotation electromagnetic field, and servo-driver 106 can be with According to the actual requirements, the expectation rotating speed of motor shaft 103 is pre-set, and obtains the expectation rotational angle of motor shaft 103 in real time.By Directly it is fixedly connected with viscosity sensing device 11 in the second end 1032 of motor shaft 103, viscosity sensing device 11 is immersed in be measured Hindered in liquid be subject to sticky torque, the actual speed of viscosity sensing device 11 can be less than pre-set expectation rotating speed, i.e., The actual rotation angle of motor shaft 103 lags behind expectation rotational angle.Encoder circuit 1051 is arranged on motor shaft by obtaining The actual rotation angle of permanent magnet 104 in 103 first end 1031, determines between actual rotation angle and expectation rotational angle Difference, and then calculate the hydrodynamic viscosity of testing liquid.

For example, the motor stator 1034 for being used to produce Vector Rotation electromagnetic field in the present embodiment is that is, Fig. 1 Upper disk 2, i.e. " vector turntable ", and " vector turntable " is main turn disk.Correspondingly, under the active force of Vector Rotation electromagnetic field The rotor 1033 rotated is produced that is, lower wall 3 in Fig. 1, i.e., " magnetic linkage turntable ", and " magnetic linkage turntable " is passive Turntable.The hydrodynamic viscosity delivered hysteresis difference and reflect testing liquid of active turntable and passive turntable, testing liquid Hydrodynamic viscosity is bigger, then active turntable and passive turntable to deliver hysteresis difference bigger.

Optionally, since the first end 1031 of motor shaft 103 is connected with permanent magnet 104, the second end 1032 of motor shaft 103 Directly it is fixedly connected with viscosity sensing device 11, and permanent magnet 104 is arranged at the first end 1031 and encoder of motor shaft 103 Between 105, then as shown in Figure 2 A, encoder 105, permanent magnet 104, viscosity sensing device 11 can be coaxially disposed, that is, encoded Device 105, permanent magnet 104, the central point of viscosity sensing device 11 are located along the same line, specifically, the central point of encoder 105 The line formed with 104 central points of permanent magnet be the first line, in the central point and viscosity sensing device 11 of permanent magnet 104 The line that heart point is formed is the second line, and the first line and the second line are on the same line.

, can be by encoder 105, permanent magnetism by the way that encoder 105, permanent magnet 104, viscosity sensing device 11 are coaxially disposed Body 104,11 position of viscosity sensing device accurately correspond to, and make the angle position that encoder is read more accurate, improve viscosity measurement Determine the accuracy of hydrodynamic viscosity.

Further, the first line and the same straight line where the second line can be the axis L of motor shaft 103.Pass through By encoder 105, permanent magnet 104, viscosity sensing device 11, axis is configured centered on motor shaft 103, can pass viscosity Rotation of the induction device 11 on motor shaft 103 is more firm, improves the accuracy of viscosimeter measure hydrodynamic viscosity.

Further, as an alternative embodiment, encoder 105 can be Hall absolute value encoder, suddenly The resolution ratio of your absolute value encoder is 2¹⁴, so that the angle position precision that encoder 105 can be read is 360 °/2¹⁴= 0.022 °, even if small angular values can be detected acquisition, to improve the accurate of viscosimeter measure hydrodynamic viscosity Degree.

As another optional embodiment, encoder 105 can also be increment size encoder, and increment size encoder Resolution ratio be no less than 1000 lines so that the accuracy of detection of encoder 105 further improves, so as to improve viscosimeter measure liquid The accuracy of dynamic viscosity.

For example, above-mentioned viscosimeter can be applied on chemical production line.Specifically, viscosimeter is fixed on chemical industry life Either viscosimeter can integrally immerse in testing liquid or only viscosity sensing dress in pipeline for the reaction kettle of producing line, blender Put in 11 immersion testing liquids, viscosity sensing device 11 is subject to active force, i.e., the viscosity that testing liquid has in testing liquid Sticky torque can be produced to viscosity sensing device 11 so that actual rotary speed is reflected to servo electricity by viscosity sensing device 11 Machine 10, the viscosity of testing liquid are directly proportional to the sticky torque of viscosity sensing device 11.And the encoder inside servomotor 10 105 read the rotational angle that the viscosity sensing device 11 that motor shaft 103 is fed back rotates in testing liquid in real time, so as to come into one The viscosity of testing liquid is determined in pacing.

2B-2G below in conjunction with the accompanying drawings, the reaction on application scenarios and chemical production line to the viscosimeter of the present embodiment are held The installation connection relation of device is described in detail：

On the basis of Fig. 2A, the present embodiment also provides another viscosimeter.As shown in Figure 2 B, which can wrap Include：Shell 101, servomotor body 102, the second end 1032 of motor shaft, viscosity sensing device 11, encoder 105.Wherein, Servomotor body 102 is arranged on inside shell 101, and the second end 1032 of motor shaft stretches out servomotor body 102 and with gluing Degree sensing device 11 is directly fixedly connected.

Wherein, shell 101 can include upper shell 1011, lower housing shell 1012；Upper shell 1011 is arranged on servomotor sheet Outside body 102, lower housing shell 1012 is tightly connected and is arranged on outside the second end 1032 of motor shaft, lower casing with upper shell 1011 Body 1012 can form the protective shell of the second end 1032 of motor shaft, and the development length of lower housing shell 1012 can be according to the of motor shaft Extend depending on the length outside servomotor body 102 at two ends 1032.

As shown in Figure 2 B, which can also include sealing ring 109.Since the second end 1032 of motor shaft is in servo electricity The opening of machine body 102 extends servomotor body 102, and therefore, sealing ring 109 can be arranged on servomotor body 102 with the junction of the second end 1032 of motor shaft, for sealing the opening of servomotor body 102, make servomotor body 102 water proof and dust proofs, ensure the normal performance of servomotor.

Further, since the second end 1032 of motor shaft continues to extend in the inside of lower housing shell 1012, thus it is electric in order to prevent The second end 1032 of arbor is corroded or is spattered with water by testing liquid, and multiple sealings can be set at the distal opening of lower housing shell 1012 Ring 109, sealing ring 109 can specifically be chosen can effectively antiacid alkali resistant, high temperature resistant, the polytetrafluoro material for resisting various organic solvents Material, reaches better seal effect, motor shaft is normally rotated, while ensure the service life of viscosimeter.

Further, holding section 1013 can also be set on 1012 outer wall of lower housing shell, and holding section 1013 can be arranged on down The optional position of 1012 outer wall of housing, holding section 1013 can be multiple protrusions being uniformly arranged on 1012 outer wall of lower housing shell. Correspondingly, viscosimeter can also include installing plate 108 matched with holding section 1013.Installing plate 108 is hollow structure, installation The hollow structure of plate 108 passes through 1012 outer wall of lower housing shell, is connected with holding section 1013.

As shown in Figure 2 C, installing plate 108 can be circular steel plate, it is hollow structure, and hollow space is used to make motor shaft Second end 1032 pass through, and be fastenedly connected with holding section 1013.Installing plate 108 can include multiple mounting holes being uniformly arranged 1081, installing plate 108 can be fixed in the reaction vessel of a variety of production lines by spiral, be being reacted so as to improve viscosimeter The stability installed in kettle or pipeline, improves the accuracy of viscosimeter measure hydrodynamic viscosity.

On the basis of Fig. 2 B, Fig. 2 C, Fig. 2 D, Fig. 2 E provide installation side of the viscosimeter in different application scenarios Formula.

As an alternative embodiment, as shown in Figure 2 D, viscosimeter is installed in large-size reactor.In reaction kettle In, material agitator does not stop stirring testing liquid and is flowed.As shown in Figure 2 D, can be set in the diverse location of reaction kettle more A viscosimeter, to measure the hydrodynamic viscosity of testing liquid.By setting viscosimeter in diverse location, balanced can know The hydrodynamic viscosity of multiple regions testing liquid in reaction kettle, can be taken by the hydrodynamic viscosity measured to multiple regions Average value, or the larger measurement result of some obvious errors is excluded, avoid because of the paramophia or stream of a certain region testing liquid It is fast abnormal, and cause measurement result deviation larger.

In Fig. 2 D, A, B area are respectively provided with a viscosimeter, and Fig. 2 E are a kind of peace of the viscosimeter in a-quadrant Dress mode, Fig. 2 F are a kind of mounting means of viscosimeter in B area.

The first opening is provided with Fig. 2 E, at the top of reaction kettle, the opening direction of the first opening is perpendicular to testing liquid Horizontal plane.Meanwhile the second end 1032 for being connected with the motor shaft of viscosity sensing device 11 extends into reaction kettle from the first opening Inside, motor shaft are mutually perpendicular to testing liquid horizontal plane.The second end 1032 of motor shaft extend into the depth of reaction kettle according to The height of testing liquid in a kettle is correspondingly arranged, to ensure that viscosity sensing device 11 is fully immersed in testing liquid, peace Loading board 108 is fastenedly connected by the first opening of multiple fastening bolts 110 and reaction kettle, so that viscosimeter and reaction kettle sealing, Firm connection.By such a connection mode, the depth of reaction kettle is extended into by adjusting the second end 1032 of motor shaft, can be right Testing liquid at different depth is measured, so that easy to operate, quick and measurement result accuracy height.

Optionally, when 1032 length of second end of motor shaft is longer and extend into the depth of reaction kettle it is deeper when, Ke Yi Extend into the second end 1032 of the motor shaft of reaction kettle and the exterior of viscosity sensing device 11 sets protective device, specifically, protecting Protection unit can be the hollow columnar protective cover that another end opening is closed in one end.It is connected to the viscosity of the second end 1032 of motor shaft Sensing device 11 can extend into the blind end of protective device from the openend of protective device, the openend of protective cover can with it is anti- Answer the first of kettle to be open to connect, so as to form a closing in the second end 1032 of motor shaft and the exterior of viscosity sensing device 11 Protective cover.Meanwhile multiple deflector holes can be uniformly arranged in the blind end of protective device, so that the testing liquid in reaction kettle Flow into protective device and viscosity sensing device 11 is immersed in testing liquid, so that motor shaft is treating viscosity sensing device 11 The actual speed surveyed in liquid feeds back to encoder 105.Pass through the second end 1032 and viscosity sensing device 11 in motor shaft Outside sets protective device, can be long and cause motor shaft to be produced in testing liquid to avoid 1032 length of second end of motor shaft Life is rocked or bended, and improves the second end 1032 of motor shaft and the stability of the rotation of viscosity sensing device 11, and then improve measure As a result accuracy.

Further, at least one can be set along the extending direction of the second end 1032 of motor shaft inside protective device The second end 1032 of a sealing ring 109, sealing ring 109 and motor shaft, which contradicts, to be connected, and sealing ring 109 can be used for righting motor shaft Second end 1032, rocked with ensureing that the second end 1032 of motor shaft does not produce inside protective device, further improve motor The stability that the second end 1032 and viscosity sensing device 11 of axis rotate, and then ensure the accuracy of measurement result.

In fig. 2f, the second opening is provided with the side wall of reaction kettle, the opening direction of the second opening is parallel to prepare liquid Body horizontal plane.Meanwhile the second end 1032 for being connected with the motor shaft of viscosity sensing device 11 extends into reaction from the second opening Inside kettle, motor shaft is parallel to each other with testing liquid horizontal plane, and the second end 1032 of motor shaft and viscosity sensing device 11 It is completely immersed in testing liquid.Installing plate 108 is fastenedly connected by multiple fastening bolts 110 and the second opening of reaction kettle, with Viscosimeter is set to be sealed with reaction kettle, firm connection.By such a connection mode, extend by adjusting the second end 1032 of motor shaft Into the depth of reaction kettle, the testing liquid of same depth diverse location can be measured so that it is easy to operate, quick simultaneously And measurement result accuracy is high.

A, B area in Fig. 2 D set viscosimeter respectively, can measure different vertical position and horizontal level in reaction kettle On testing liquid, by being applied in combination for multiple viscosimeters, the testing liquid of reaction kettle inside different zones can be carried out Sufficiently measure, so that the optimal value of the hydrodynamic viscosity of testing liquid is determined in multiple measurement results, to improve measure The accuracy and operability of hydrodynamic viscosity.

As another optional embodiment, in the mounting means shown in Fig. 2 E, viscosimeter can be directly mounted at In the pipeline of industrial flow, testing liquid flows in the duct；Or the testing liquid in reaction vessel is exported by pipeline Reaction vessel, is measured the hydrodynamic viscosity of testing liquid in pipeline is exported.

Specifically, pipeline can include first segment, the second section, first segment and the second orthogonal setting of section, make pipeline shape Corner in 90 °.The junction of first segment and the second section is provided with the 3rd opening, the opening direction and testing liquid stream of the 3rd opening Dynamic direction is parallel.Meanwhile the second end 1032 for being connected with the motor shaft of viscosity sensing device 11 is extended into from the 3rd opening Inside pipeline, motor shaft is parallel to each other with testing liquid flow direction and viscosity sensing device 11 is completely immersed in testing liquid In.Installing plate 108 is fastenedly connected by multiple fastening bolts 110 and the 3rd opening of pipeline, so that viscosimeter is close with reaction kettle Envelope, firm connection.Multiple viscosimeters can be set in the longer pipe line of transmission range, to the prepare liquid of pipeline inside many places Body is measured, so that the optimal value of the hydrodynamic viscosity of testing liquid is determined in multiple measurement results, to improve measure The accuracy and operability of hydrodynamic viscosity.

Optionally, as shown in Figure 3A, the servo-driver 106 in viscosimeter provided in this embodiment can include：Rear end Lid 1061, power circuit board 1062, control board 1063, power supply circuit board 1064.Correspondingly, shell 101 can also include Opening, opening are arranged on the side of the first end 1031 away from motor shaft 103 on shell 101.

Simultaneously because power circuit board 1062, control board 1063, the volume of 1064 constant power device of power supply circuit board It is small, power device can be layered and be arranged on rear end cap 1061, rear end cap 1061 is fixedly connected by bolt with shell 101, So that servo-driver 106 can be with the shell 101 of embedded servo motor 10, and it is electrically connected with servomotor body 102. Specifically, power circuit board 1062, control board 1063, power supply circuit board 1064 can be arranged on rear end cap 1061 and servo Between motor body 102.It is electric along power can be disposed with by rear end cap 1061 to the direction of servomotor body 102 Road plate 1062, control board 1063, power supply circuit board 1064.

Further, servo-driver 106 can also include：Silica gel heat-conducting plate 1065.Silica gel heat-conducting plate 1065 is arranged on Between rear end cap 1061 and power circuit board 1062, can effectively it radiate to servo-driver 106, and silica gel heat-conducting plate 1065 is small, can be in the shell 101 with the integral embedded servo motor 10 of servo-driver 106.

Servomotor 10 provided in this embodiment, since servo-driver 106 and servomotor body 102 can integrally connect Connect, only motor shaft 103 leaks outside, and servomotor 10 is had waterproof and dustproof, etch-proof characteristic.In specific chemical-process In there is explosion-proof performance, be especially resistant to the severe working environment of chemical industry.Also, the servomotor 10 in the present embodiment can be with Realize that 360 ° rotate without dead angle, be 2 with reference to resolution ratio¹⁴Encoder realize the positioning of accurate angle, to improve viscosimeter measure The accuracy of hydrodynamic viscosity.

As an alternative embodiment, the viscosimeter as shown in Fig. 2A, Fig. 2 B can also include aviation socket 107, Multiple aviation sockets 107 can be set on the outer wall of shell 101.Aviation socket 107 can be used for servomotor and be set with outside Connect with power supply for signal transmission is obtained, especially for the more harness of core number, can be carried out by aviation socket 107 reliably Connection, further improves waterproof, the explosion-resistance characteristic of servomotor.

Wherein, the mode and quantity that aviation socket 107 is set can be adjusted according to the actual requirements.Such as Fig. 3 A and 3B institutes Show, multiple aviation sockets 107 can be uniformly arranged in the same side of the outer wall of shell 101.As shown in figure 4, can be in shell 101 Outer wall on opposite sides one aviation socket 107 is set respectively.

In the present embodiment, viscosity sensing device 11 needs to immerse in testing liquid, it is contemplated that the not jljl of testing liquid Attribute is managed, it is necessary to adjust the shape and size of viscosity sensing device 11.Specifically, viscosimeter can be equipped with a variety of shapes and sizes Viscosity sensing device 11.Optimal, viscosity sensing device 11 can be cylindrical or spheroidal, to be measured maximumlly to increase The contact area of liquid and viscosity sensing device 11, makes viscosity sensing device 11 uniformly be contacted with testing liquid, improves viscosimeter Measure the accuracy of hydrodynamic viscosity.By adjusting the shape and size of viscosity sensing device 11, improve viscosimeter and measuring During the hydrodynamic viscosity of the testing liquid of different physical attributes, its adaptability is stronger, while to the viscosity of a variety of testing liquids Measure is more accurate.

As another optional embodiment, viscosimeter can also include guiding device, and guiding device can be arranged on On the outer wall of viscosity sensing device 11.Since viscosimeter provided in this embodiment can be directly applied in tank body, chemical reaction In kettle and in pipeline, in order to ensure there is stable contact area between viscosity sensing device 11 and testing liquid, avoid because tank In vivo, the testing liquid flowing in chemical reaction kettle and in pipeline or the rotation of blender and influence viscosity sensing device 11 with treating The contact area between liquid is surveyed, therefore guiding device can be set to control the stream of testing liquid.

For example, guiding device can be diversion pipe or flow apron.Diversion pipe is with flow apron according to industry spot Different operating modes use a variety of set-up modes, for example, flow apron can be arranged to block entirely, partly block or use The mode that diversion pipe flows back testing liquid export reaction vessel again, to alleviate testing liquid to the direct of viscosity sensing device 11 Impact.

Optionally, guiding device can extend along the outer wall of viscosity sensing device 11, and beyond the extension of outer wall.Passing through will Guiding device extends beyond the extension of the outer wall of viscosity sensing device 11, viscosity sensing device 11 is not directly contacted with treating for flowing Liquid is surveyed, to ensure the stability of the rotation of viscosity sensing device 11, improves the accuracy of viscosimeter measure hydrodynamic viscosity.

For example, what above-mentioned guiding device can be well is applied in the high pipeline of testing liquid flow velocity, guiding device With the contact surface of testing liquid can perpendicular to the inflow direction of testing liquid, so as to play the role of unhurried current to testing liquid, Avoid making viscosity sensing device 11 be subject to intense impact in a short time suddenly, the viscosity sensing device for causing servomotor to obtain 11 real-time rotating speeds produce relatively large deviation.

Further, viscosimeter can also include connecting rod.Guiding device is connected with viscosity sensing device 11 by connecting rod Connect, so that there are gap between the outer wall of guiding device and viscosity sensing device 11.By being filled in guiding device and viscosity sensing Put and gap is set between 11 outer wall, can avoid sensing in guiding device and viscosity while testing liquid is carried out and flowed There is testing liquid residual and accumulation in 11 junction of device, further improves the stability of the rotation of viscosity sensing device 11, improves Viscosimeter measures the accuracy of hydrodynamic viscosity.Optimal, gap can be more than or equal to three points of viscosity sensing device diameter One of.

For example, what above-mentioned guiding device can be well is applied in the denser application scenarios of testing liquid.When treating When survey liquid is denser, testing liquid easily produces accumulation and is not easy to spread, this results in viscosity sensing device 11 in prepare liquid When being rotated in body, the grume of testing liquid is easily remained and adhered on the surface of viscosity sensing device 11 and guiding device, is being treated Survey after liquid solidification, it is easy to viscosity sensing device 11 and motor shaft 103 are adhered, cause the rotation of motor shaft 103 to be obstructed, Measurement accuracy is may result in be affected significantly.Therefore, cross and set between the outer wall of guiding device and viscosity sensing device 11 Gap is put, can further improve the stability of the rotation of viscosity sensing device 11, improves the essence of viscosimeter measure hydrodynamic viscosity Exactness.

In viscosimeter provided in this embodiment, servo-driver 106 is default with previously given one by controlling voltage Motor rotary speed.Under 106 given voltage of servo-driver, permanent magnet 104 is subject to the tractive force of electric machine rotary magnetic field and band Dynamic motor shaft 103 is rotated, so that motor shaft 103 drives the viscosity being fixedly connected with the second end 1032 of motor shaft 103 to pass Induction device 11 rotates in testing liquid.When viscosity sensing device 11 reaches constant revolution in testing liquid, encoder 105 Feedback signal can be obtained in real time, to obtain the change in angular position of the actual rotating speed of permanent magnet 104 and rotation generation.

The expectation that certain moment motor shaft can be obtained according to the previously given motor rotary speed of servo-driver 106 rotates Angle, can be defined as driving vector angle；Meanwhile the feedback signal received according to encoder 105, obtain the reality that motor shaft produces Border rotational angle, can be defined as flux linkage vector angle.And according to the difference at driving vector angle and flux linkage vector angle, it can obtain viscous The suffered viscosity torque in testing liquid of sensing device 11 is spent, and then the hydrodynamic viscosity of testing liquid is obtained by calculating.

Specifically, the hydrodynamic viscosity of testing liquid can be calculated by formula one.

Formula one：

Wherein, μ is the hydrodynamic viscosity of testing liquid；H is the height that viscosity sensing device is dipped in testing liquid；R_f For the radius of viscosity sensing device；R_aTo hold the vessel radius of testing liquid；M institutes in testing liquid for viscosity sensing device By sticky torque；ω is rotary speed of the viscosity sensing device in testing liquid.

As an alternative embodiment, as half of vessel radius much larger than viscosity sensing device for holding testing liquid During footpath, formula one can be further deformed into formula two, and the hydrodynamic viscosity of testing liquid can be calculated by formula two.

Formula two：

Wherein, μ is the hydrodynamic viscosity of testing liquid；H is the height that viscosity sensing device is dipped in testing liquid；R_f For the radius of viscosity sensing device；M suffered viscosity torques in testing liquid for viscosity sensing device；ω is viscosity sensing device Rotary speed in testing liquid.

As another optional embodiment, when rotary speed of the viscosity sensing device in testing liquid reaches constant speed When, formula two can be further deformed into formula three, and the hydrodynamic viscosity of testing liquid is calculated by formula three.

Formula three：μ=kM；

Wherein, μ is the hydrodynamic viscosity of testing liquid；M is viscosity sensing device suffered viscous force in testing liquid Square；

Wherein, k is constant,H is the height that viscosity sensing device is dipped in testing liquid；R_fFor viscosity The radius of sensing device；ω is rotary speed of the viscosity sensing device in testing liquid.

Pass through the formula one that provides to formula three, there is provided the side of the hydrodynamic viscosity of testing liquid is calculated in the case of a variety of Formula, to improve adaptability of the viscosimeter in a variety of industrial flows, improves the accuracy of viscosimeter measure hydrodynamic viscosity, together The application range of Shi Tigao viscosimeters.

Further, can be according to industry in order to improve the applicability for the hydrodynamic viscosity for utilizing viscosimeter measure The hydrodynamic viscosity of the testing liquid calculated by formula one to formula three is converted into standard parameter by standard, to prepare liquid The hydrodynamic viscosity of body carries out viscosity calibration.For example, the viscosity mark that Brookfield companies of the U.S. can be used to produce Quasi- liquid measures.

Specifically, it is G to choose according to known normal viscosity as defined in viscosity criterion_iTesting liquid, according to formula one to Any mode that formula three provides can obtain the hydrodynamic that the viscosimeter described through this embodiment measures the testing liquid Viscosity is μ_i, you can the hydrodynamic viscosity, mu and normal viscosity G of testing liquid are obtained by formula four_MarkQuantitative relationship：

Formula four：

Wherein, G_MarkFor the normal viscosity of testing liquid；μ is the hydrodynamic viscosity of testing liquid；G_iFor known to i liquid Normal viscosity；μ_iTo utilize the hydrodynamic viscosity of the i liquid of this implementation viscosimeter measure.

By the mark that the hydrodynamic viscosity of the testing liquid measured using this implementation viscosimeter is converted into industry universal Quasi- viscosity parameter so that the application scenarios and scope of viscosimeter greatly improve.Further, the i liquid of four kinds of formula can select The liquid of a variety of known normal viscosities is taken, and obtains the hydrodynamic viscosity, mu of the liquid of corresponding known normal viscosity_i, it is used in combination Formula five represents G_iWith μ_iQuantitative relationship.In order to reduce evaluated error, the liquid of a variety of known normal viscosities can be chosen, Obtain the hydrodynamic viscosity, mu of every kind of liquid_i,

Formula five：G_i=k_Mark·μ_i；

Wherein, G_iFor the known normal viscosity of i liquid；μ_iTo utilize the hydrodynamic of the i liquid of this implementation viscosimeter measure Viscosity；k_MarkFor constant.

According to the different i liquid of selection, the corresponding k of every kind of liquid can be obtained_Mark, by multiple k_MarkIt is averaged, obtains Take k_Mark；And by k_MarkSubstitute into formula four and obtain formula six：

Formula six：G_Mark=k_Mark·μ；

Wherein, G_MarkFor the normal viscosity of testing liquid；μ is the hydrodynamic viscosity of testing liquid；k_MarkFor constant, andWherein, G_iFor the known normal viscosity of i liquid；μ_iTo utilize the liquid of the i liquid of this implementation viscosimeter measure Body dynamic viscosity；N is the quantity of i liquid.

Viscosimeter provided in this embodiment includes：Servomotor, viscosity sensing device；Servomotor includes：Servomotor Body, motor shaft, encoder；The first end of motor shaft is arranged on servomotor body interior, and the second end of motor shaft, which is stretched out, to be watched Take motor body and be directly fixedly connected with viscosity sensing device, encoder is arranged on servomotor body interior, for reading The rotational angle that the viscosity sensing device of motor shaft feedback rotates in testing liquid.The utility model simple structure, motor shaft Rotation with viscosity sensing device is not easy to be disturbed by extraneous reaction environment, so that it is suitable in a variety of industrial flows to improve viscosimeter Ying Xing, improves the accuracy of viscosimeter measure hydrodynamic viscosity, while improves the application range of viscosimeter.

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through The relevant hardware of programmed instruction is completed, and foregoing program can be stored in a computer read/write memory medium, the program Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light Disk etc. is various can be with the medium of store program codes.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that： It can still modify the technical solution described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology The scope of scheme.

Claims

A kind of 1. viscosimeter, it is characterised in that including：Servomotor, viscosity sensing device；

The servomotor includes：Servomotor body, motor shaft, encoder；

The first end of the motor shaft is arranged on the servomotor body interior, is watched described in the second end stretching of the motor shaft Take motor body and be directly fixedly connected with the viscosity sensing device, the encoder is arranged in the servomotor body Portion, the rotational angle that the viscosity sensing device for reading the motor shaft feedback rotates in testing liquid.
2. viscosimeter according to claim 1, it is characterised in that the viscosity sensing device is cylinder or spheroidal.
3. viscosimeter according to claim 1, it is characterised in that the viscosimeter further includes guiding device, the water conservancy diversion Device is arranged on the outer wall of the viscosity sensing device, and the guiding device is used to prevent the testing liquid from directly impacting institute State viscosity sensing device.
4. viscosimeter according to claim 3, it is characterised in that the guiding device is diversion pipe or flow apron.
5. viscosimeter according to claim 1, it is characterised in that the servomotor further includes shell, servo-driver；

The servo-driver, the servomotor body are arranged on the enclosure, and the servo-driver is watched with described Take motor body electrical connection.
6. viscosimeter according to claim 5, it is characterised in that the servomotor body further includes：Permanent magnet；

The first end of the motor shaft is arranged on the side of the permanent magnet, and the encoder is arranged on the another of the permanent magnet Side, the first end of the motor shaft are contradicted with the permanent magnet and connected.
7. viscosimeter according to claim 6, it is characterised in that the encoder is absolute value encoder, described absolute The resolution ratio for being worth encoder is 2¹⁴；Or

The encoder is increment size encoder, and the resolution ratio of the increment size encoder is no less than 1000 lines.
8. viscosimeter according to claim 6, it is characterised in that the permanent magnet, the encoder, viscosity sensing Device is coaxially disposed.
9. viscosimeter according to claim 3, it is characterised in that the guiding device is outer along the viscosity sensing device Wall extends, and beyond the extension of the outer wall, for preventing the testing liquid from directly impacting the viscosity sensing device.
10. viscosimeter according to claim 9, it is characterised in that further include：Connecting rod；

The guiding device is connected with the viscosity sensing device by the connecting rod, so that the guiding device is glued with described There are gap, the gap between the outer wall of degree sensing device to be more than or equal to 1/3rd of the viscosity sensing device diameter.