CN210090246U - Device for measuring liquid viscosity coefficient by adopting metal sensing type ball falling method - Google Patents
Device for measuring liquid viscosity coefficient by adopting metal sensing type ball falling method Download PDFInfo
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- CN210090246U CN210090246U CN201920438720.4U CN201920438720U CN210090246U CN 210090246 U CN210090246 U CN 210090246U CN 201920438720 U CN201920438720 U CN 201920438720U CN 210090246 U CN210090246 U CN 210090246U
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Abstract
The utility model provides a device for measuring liquid viscosity coefficient by adopting a metal sensing type ball falling method, which mainly comprises a glass cylinder, a base platform, a distance measuring and timing instrument and a bracket; the top of the glass cylinder is provided with a guide hole cover, the bottom of the glass cylinder is arranged in the center of the base platform and fixed through a support, and each layer of the support is respectively provided with a metal induction sensor, an ultrasonic emitter and an ultrasonic receiver which are respectively connected with a distance measuring and timing instrument through transmission wires. The advantages are that: 1) non-transparent liquid can be measured, and the range of the types of the liquid to be measured is expanded; 2) the measurement precision is high; 3) ensuring that the metal ball falls along the central line of the glass cylinder; 4) whether the metal ball is already in a uniform motion state at the starting point of the timing can be verified.
Description
Technical Field
The utility model relates to an adopt device of metal sensing formula ball falling method measurement liquid viscosity coefficient belongs to measuring instrument equipment technical field.
Background
Traditional falling ball method measuring liquidThe device structure of the viscosity coefficient of the body is shown as figure 1, the liquid to be measured is poured into a measuring cylinder, then a metal ball is put in, and the density of the metal ball is set asρThe density of the liquid beingρ 0The diameter of the metal ball isdThe falling speed of the metal ball in the liquid to be measured at a constant speed isv（v=S/t) The inner diameter of the measuring cylinder isDThe depth of the liquid isH. The viscosity coefficient in the liquid under laboratory conditions is then, according to the stokes equation:
the measurement mode of each parameter in the experiment comprises the following steps: 1. diameter of metal balld-a screw micrometer; 2. inner diameter of measuring cylinderD-a vernier caliper; 3. depth of liquidH-a meter ruler; 4. uniform falling distance of metal ballS-a meter ruler; 5. time of falling metal ball at uniform speedt-an artificial stopwatch.
The above-mentioned conventional measuring device has the following drawbacks:
1) the traditional measuring device can only measure the transparent liquid with a larger viscosity coefficient, and if the traditional measuring device is non-transparent liquid, the condition that the metal ball moves in the liquid to be measured cannot be observed, and the falling time of the metal ball cannot be measured; meanwhile, because a manual stopwatch is adopted for timing, the falling speed of the metal ball is required to be as low as possible, so that the diameter of the metal ball is required to be as small as possible, the viscosity of the liquid to be measured is required to be as large as possible, and otherwise, the falling speed is too high, so that accurate timing cannot be realized;
2) visual errors and reaction errors exist in the manual stopwatch timing, so that the measurement of the falling time of the small ball obtained by the experiment is inaccurate;
3) because the glass measuring cylinder with the base is adopted in the experiment, when the liquid level of the liquid to be measured is higher than the maximum measuring height of the measuring cylinder, the height of the liquid to be measured in the glass measuring cylinder is measured by using the meter ruler, the measuring starting point is not easy to determine, and the meter ruler is difficult to be strictly parallel to the wall of the glass cylinder in the measuring process, so that the liquid height measuring error is large;
4) in the traditional experiment, most experimenters release the metal ball by experience, so that the metal ball is difficult to ensure to fall along the center of the glass cylinder, and due to the action of internal friction force between liquid attached to the surface of the metal ball and surrounding liquid, if the metal ball does not fall along the center, the stress of the metal ball is uneven, the metal ball can turn over in the falling process, and the time for measuring the uniform motion of the metal ball in the liquid is influenced;
5) in the experiment, the speed of the metal ball falling at a constant speed in the liquid to be measured needs to be measured, the distance is obtained by dividing the time, and whether the metal ball falls to a timing starting point in the liquid to be measured reaches the constant speed (maximum speed) is difficult to judge by naked eyes.
Disclosure of Invention
The utility model aims to overcome the above-mentioned defect that the equipment that has traditional falling ball method to measure liquid viscosity coefficient exists, provide an adopt metal sensor's falling ball method to measure liquid viscosity coefficient's device.
The technical solution of the utility model is as follows: the device for measuring the liquid viscosity coefficient by adopting a metal sensing type falling ball method structurally comprises a guide hole cover 1, a glass cylinder 2, an A metal induction sensor 3, a B metal induction sensor 4, a C metal induction sensor 5, an A ultrasonic emitter 6, an A ultrasonic receiver 7, a B ultrasonic emitter 8, a B ultrasonic receiver 9, a base platform 10, a distance measuring and timing instrument 11, a transmission lead 12 and a support 13; wherein the top of glass section of thick bamboo 2 is equipped with direction handhole door 1, and the central authorities of base platform 10 are located to the bottom of glass section of thick bamboo 2 to be fixed in the upper surface of base platform 10 through support 13, each layer of support 13 is equipped with A metal inductive sensor 3, B metal inductive sensor 4, C metal inductive sensor 5 respectively, and A ultrasonic transmitter 6, A ultrasonic receiver 7, B ultrasonic transmitter 8, B ultrasonic receiver 9, and is connected with range finder 11 through transmission wire 12 respectively.
Preferably, the support 13 comprises 2 vertical rods and 3 layers of horizontal fixing frames, wherein the 2 vertical rods are respectively symmetrically arranged at the left side and the right side of the glass cylinder 2, and the bottom of the vertical rods is fixed on the upper surface of the base platform 10; each layer of horizontal fixing frame comprises 1 fixing platform and 2 connecting rods with the same length, wherein the 2 connecting rods are symmetrically arranged at the left end and the right end of the fixing platform, and each connecting rod is correspondingly connected with 1 vertical rod through 1 fixing screw 14; a circular through hole is formed in the center of the fixed platform, and a circular metal induction sensor is arranged inside the fixed platform; the horizontal height position of each layer of horizontal fixing frame can be adjusted by adjusting the fixing screw 14.
Preferably, the support 13 is respectively a 1 st layer horizontal fixing frame, a 2 nd layer horizontal fixing frame and a 3 rd layer horizontal fixing frame from top to bottom, wherein the center of the 1 st layer horizontal fixing frame is provided with an A metal induction sensor 3, and one side of the lower surface of a fixing platform of the support is provided with an A ultrasonic emitter 6; a metal B induction sensor 4 is arranged in the center of the horizontal fixing frame of the layer 2, an ultrasonic receiver A7 is arranged on one side of the upper surface of a fixing platform, and an ultrasonic emitter B8 is arranged on one side of the lower surface of the fixing platform; a C metal induction sensor 5 is arranged in the center of the 3 rd layer of horizontal fixing frame, and a B ultrasonic receiver 9 is arranged on one side of the upper surface of a fixing platform; the A ultrasonic transmitter 6, the A ultrasonic receiver 7, the B ultrasonic transmitter 8 and the B ultrasonic receiver 9 are positioned on the same vertical axis.
Preferably, the center of the guide hole cover 1 is provided with a through hole, the through hole is positioned on the central axis of the glass cylinder 2, and the outer surface of the glass cylinder 2 is provided with a scale.
The utility model has the advantages that:
1) non-transparent liquid can be measured, and the range of the types of the liquid to be measured is expanded;
2) the metal induction sensor is adopted, so that the precision is high, and the influence of the falling speed of the small ball is avoided;
3) the measurement precision of each parameter is improved, and the error of an experimental result is reduced;
4) ensuring that the metal ball falls along the central line of the glass cylinder;
5) whether the metal ball is already in a uniform motion state at the starting point of the timing can be verified.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring liquid viscosity coefficient by a traditional falling ball method.
Fig. 2 is the utility model discloses measure liquid viscosity coefficient's experimental apparatus structure schematic diagram.
In the figure, 1 is a guide hole cover, 2 is a glass cylinder, 3 is an A metal induction sensor, 4 is a B metal induction sensor, 5 is a C metal induction sensor, 6 is an A ultrasonic transmitter, 7 is an A ultrasonic receiver, 8 is a B ultrasonic transmitter, 9 is a B ultrasonic receiver, 10 is a base platform, 11 is a distance measuring timer, 12 is a transmission lead, 13 is a bracket, and 14 is a fixing screw.
Detailed Description
As shown in fig. 2, the device for measuring the liquid viscosity coefficient by using the metal sensing falling ball method structurally comprises a guide hole cover 1, a glass cylinder 2, an a metal induction sensor 3, a B metal induction sensor 4, a C metal induction sensor 5, an a ultrasonic transmitter 6, an a ultrasonic receiver 7, a B ultrasonic transmitter 8, a B ultrasonic receiver 9, a base platform 10, a distance measuring and timing instrument 11, a transmission lead 12 and a support 13; wherein the top of glass section of thick bamboo 2 is equipped with direction handhole door 1, and the central authorities of base platform 10 are located to the bottom of glass section of thick bamboo 2 to be fixed in the upper surface of base platform 10 through support 13, each layer of support 13 is equipped with A metal inductive sensor 3, B metal inductive sensor 4, C metal inductive sensor 5 respectively, and A ultrasonic transmitter 6, A ultrasonic receiver 7, B ultrasonic transmitter 8, B ultrasonic receiver 9, and is connected with range finder 11 through transmission wire 12 respectively.
The support 13 comprises 2 vertical rods and 3 layers of horizontal fixing frames, wherein the 2 vertical rods are respectively symmetrically arranged at the left side and the right side of the glass cylinder 2, and the bottom of the vertical rods is fixed on the upper surface of the base platform 10; each layer of horizontal fixing frame comprises 1 fixing platform and 2 connecting rods with the same length, wherein the 2 connecting rods are symmetrically arranged at the left end and the right end of the fixing platform, and each connecting rod is correspondingly connected with 1 vertical rod through 1 fixing screw 14; a circular through hole is formed in the center of the fixed platform, and a circular metal induction sensor is arranged inside the fixed platform; the horizontal height position of each layer of horizontal fixing frame can be adjusted by adjusting the fixing screw 14.
The support 13 is respectively a 1 st layer horizontal fixing frame, a 2 nd layer horizontal fixing frame and a 3 rd layer horizontal fixing frame from top to bottom, wherein the center of the 1 st layer horizontal fixing frame is provided with an A metal induction sensor 3, and one side of the lower surface of a fixing platform of the support is provided with an A ultrasonic emitter 6; a metal B induction sensor 4 is arranged in the center of the horizontal fixing frame of the layer 2, an ultrasonic receiver A7 is arranged on one side of the upper surface of a fixing platform, and an ultrasonic emitter B8 is arranged on one side of the lower surface of the fixing platform; a C metal induction sensor 5 is arranged in the center of the 3 rd layer of horizontal fixing frame, and a B ultrasonic receiver 9 is arranged on one side of the upper surface of a fixing platform; the A ultrasonic transmitter 6, the A ultrasonic receiver 7, the B ultrasonic transmitter 8 and the B ultrasonic receiver 9 are positioned on the same vertical axis.
The center of the guide hole cover 1 is provided with a through hole which is positioned on the central axis of the glass cylinder 2 and is used for enabling a metal ball for measurement to fall along the central axis of the glass cylinder 2. The outer surface of the glass cylinder 2 is provided with a scale for reading the height of the liquid to be measured, so that the reading by naked eyes can be facilitated, and the calculation error is further reduced. The liquid viscosity coefficient measuring device of the metal sensor also comprises 1 metal ball, and the diameter of the metal ball is slightly smaller than that of the through hole in the center of the guide hole cover.
The internal structure of the distance measuring timer 11 comprises an STC15W4K32S4 single chip microcomputer, an LCD1602 liquid crystal display, an HC-HR04 ultrasonic distance measuring module and 2 keys, wherein all the components are mutually connected through a plurality of DuPont wires; the distance measuring timer 11 can measure the falling time and distance of the metal ball through an HC-HR04 ultrasonic distance measuring module, and display the result on an LCD1602 liquid crystal display screen after calculation through an STC15W4K32S4 singlechip.
In the embodiment, the inner diameters of the A, B, C three metal induction sensors are 45mm, and the outer diameters thereof are 55 mm; the diameter of the circular rod of the bracket 13 is 20mm, the whole width is 250mm, the external dimension of the middle rectangular frame is 75 multiplied by 5mm, and the diameter of the middle hole is 55 mm; the base platform 10 is made of marble plates, and the size of the base platform is 300 multiplied by 200 multiplied by 50 mm; glass section of thick bamboo 2 adopt transparent organic glass panel, the size: the inner diameter is 44mm, the outer diameter is 45mm, and the height is 500 mm.
In actual operation, the metal ball falls along the glass cylinder 2 with the scale through the through hole of the guide hole cover 1, in the falling process of the metal ball, when the metal ball passes through the metal induction sensor A3, the metal induction sensor A3 sends a signal to the distance measuring and timing instrument 11, and the distance measuring and timing instrument 11 starts to time; when passing through the metal induction sensor 4B, the metal induction sensor 4B sends a signal to the distance measuring timer 11 to measure the distanceThe timer 11 automatically records the time usedt 1 And simultaneously, continuing to time, when the metal ball passes through the C metal inductive sensor 5, the C metal inductive sensor 5 sends a signal to the distance measuring timer 11, the time measurement is finished and the time is displayedt 2 . Passing through a metal ballt 1 Andt 2 the time periods respectively correspond to distances ofS 1 AndS 2 measured by the ultrasonic transmitter A6 and the ultrasonic receiver A7, and the ultrasonic transmitter B8 and the ultrasonic receiver B9, the following results are obtained: the A ultrasonic transmitter 6 sends out signals, the A ultrasonic receiver 7 receives the signals, and the distance measuring timer 11 automatically records the propagation distanceS 1 (ii) a The B ultrasonic transmitter 8 sends out signals, the B ultrasonic receiver 9 receives the signals, and the distance measuring timer 11 automatically records the propagation distanceS 2 . Whether the metal ball passes through the first timing starting point is in a uniform motion state is judged by judging whether the speed of the metal ball passing through the two distances is equal, if not, the height of each layer of horizontal fixing frame in the bracket 13 can be adjusted by adjusting the bracket fixing screw 14 to changeS 1 So that the metal ball is in a uniform motion state when passing through the first timing starting point.
Claims (5)
1. The device for measuring the liquid viscosity coefficient by adopting the metal sensing type falling ball method is characterized by comprising a guide hole cover (1), a glass cylinder (2), an A metal induction sensor (3), a B metal induction sensor (4), a C metal induction sensor (5), an A ultrasonic transmitter (6), an A ultrasonic receiver (7), a B ultrasonic transmitter (8), a B ultrasonic receiver (9), a base platform (10), a distance measuring and timing instrument (11), a transmission lead (12) and a support (13); wherein the top of glass section of thick bamboo (2) is equipped with direction handhole door (1), the central authorities of base platform (10) are located to the bottom of glass section of thick bamboo (2), and be fixed in the upper surface of base platform (10) through support (13), each layer of support (13) is equipped with A metal inductive sensor (3) respectively, B metal inductive sensor (4), C metal inductive sensor (5), and A ultrasonic transmitter (6), A ultrasonic receiver (7), B ultrasonic transmitter (8), B ultrasonic receiver (9), and be connected with range finding time-recorder (11) through transmission wire (12) respectively.
2. The device for measuring the viscosity coefficient of the liquid by the metal sensing falling ball method according to claim 1, wherein the support (13) comprises 2 vertical rods and 3 layers of horizontal fixing frames, wherein the 2 vertical rods are respectively symmetrically arranged at the left side and the right side of the glass cylinder (2), and the bottom of the vertical rods is fixed on the upper surface of the base platform (10); each layer of horizontal fixing frame comprises 1 fixing platform and 2 connecting rods with the same length, wherein the 2 connecting rods are symmetrically arranged at the left end and the right end of the fixing platform, and each connecting rod is correspondingly connected with 1 vertical rod through 1 fixing screw (14); a circular through hole is formed in the center of the fixed platform, and a circular metal induction sensor is arranged inside the fixed platform.
3. The device for measuring the liquid viscosity coefficient by adopting the metal sensing type ball falling method according to claim 1 or 2, characterized in that the support (13) is respectively a layer 1 horizontal fixing frame, a layer 2 horizontal fixing frame and a layer 3 horizontal fixing frame from top to bottom, wherein the center of the layer 1 horizontal fixing frame is provided with an A metal sensing sensor (3), and one side of the lower surface of a fixing platform of the metal sensing type ball falling frame is provided with an A ultrasonic transmitter (6); a metal B induction sensor (4) is arranged in the center of the horizontal fixing frame of the layer 2, an ultrasonic receiver A (7) is arranged on one side of the upper surface of a fixing platform, and an ultrasonic emitter B (8) is arranged on one side of the lower surface of the fixing platform; a C metal induction sensor (5) is arranged in the center of the 3 rd layer of horizontal fixing frame, and a B ultrasonic receiver (9) is arranged on one side of the upper surface of the fixing platform; the A ultrasonic transmitter (6), the A ultrasonic receiver (7), the B ultrasonic transmitter (8) and the B ultrasonic receiver (9) are positioned on the same vertical axis.
4. The device for measuring the viscosity coefficient of the liquid by the metal sensing falling ball method according to claim 1, wherein the guide hole cover (1) is provided with a through hole at the center, and the through hole is positioned on the central axis of the glass cylinder (2).
5. The device for measuring the viscosity coefficient of the liquid by adopting the metal sensing type falling ball method as claimed in claim 1, wherein the outer surface of the glass cylinder (2) is provided with a scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438720.4U CN210090246U (en) | 2019-04-02 | 2019-04-02 | Device for measuring liquid viscosity coefficient by adopting metal sensing type ball falling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438720.4U CN210090246U (en) | 2019-04-02 | 2019-04-02 | Device for measuring liquid viscosity coefficient by adopting metal sensing type ball falling method |
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| Publication Number | Publication Date |
|---|---|
| CN210090246U true CN210090246U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920438720.4U Expired - Fee Related CN210090246U (en) | 2019-04-02 | 2019-04-02 | Device for measuring liquid viscosity coefficient by adopting metal sensing type ball falling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210090246U (en) |
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2019
- 2019-04-02 CN CN201920438720.4U patent/CN210090246U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 Termination date: 20210402 |