Variable-diameter device for measuring viscous liquid and viscosity measurement method

Abstract

Provided in the present disclosure are a variable-diameter device for measuring a viscous liquid and a viscosity measurement method. The variable-diameter device comprises: a variable-diameter stator mechanism, which is provided with a support frame and an elastic body sleeved on the support frame, the support frame having a first adjustment frame and a second adjustment frame which are connected to each other; and an adjustment structure, which is provided with a shaft rod structure and at least one adjustment component which are connected to each other, the shaft rod structure being arranged inside the support frame, and the at least one adjustment component being in a circumferentially-slidable connection to the support frame. The second adjustment frame can be circumferentially-movably arranged relative to the first adjustment frame by means of the at least one adjustment component, so as to change the radial dimension of the support frame. The variable-diameter device provided by the present disclosure satisfies the requirement of changing the stator diameter in a rotary viscometer in the technical field of rotary viscosity measurement, thereby achieving the purpose of dynamically adjusting the measuring range of the viscometer during viscosity measurement.

Description

Variable diameter device for measuring viscous liquid and viscosity measuring method

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311804460.5 filed on December 26, 2023, and cites the contents disclosed in the above patent application as part of this application. Technical Field

[0003] The present disclosure relates to the technical field of drilling fluid viscosity detection equipment, and in particular to a variable diameter device for measuring viscous liquid and a viscosity measurement method. Background Art

[0004] The description in this section merely provides background information related to the disclosure of this application and does not constitute prior art.

[0005] In the process of underground drilling exploration, formation drilling and gas production, a drill pipe is generally used to rotate and drill into the formation. During the drilling process, drilling fluid is injected into the wellbore from the drill bit through the internal channel of the drill pipe to lubricate the drill bit. At the same time, the drilling fluid can remove rock cuttings from the forward path of the drill bit, and the drilling fluid can carry the rock cuttings back to the ground from the drilling channel. Therefore, for different geological rock formations, it is necessary to monitor the viscosity changes of the drilling fluid in real time in order to achieve the best drilling and cuttings sticking effect. However, in actual use, the viscosity of the drilling fluid varies greatly. If it is necessary to obtain the specific viscosity characteristics of the drilling fluid actually used, it is necessary to provide a viscosity measuring device with a large measurement range and high precision. In the existing technology, a rotational viscosity meter is generally used for measurement. The rotational viscosity meter is based on the stator-rotor structure. When the rotor drives the drilling fluid to flow around the stator, the fluid viscosity is obtained by measuring the relationship between the shear force and velocity of the drilling fluid on the stator surface. However, due to the characteristics of the drilling fluid itself, as the rotor speed gradually increases, the liquid shear stress of the drilling fluid itself will decrease with the increase of the rotor speed, resulting in a decrease in the viscosity of the drilling fluid. The stator cannot accurately measure the actual viscosity of the drilling fluid. Therefore, it is necessary to reduce the distance between the stator and the rotor, that is, to change the range of the rotational viscosity meter, improve the measurement accuracy of the rotational viscosity meter, and enable the stator to accurately measure the viscosity of the drilling fluid.

[0006] However, in actual construction, the range of the rotary viscosity meter is generally changed by removing the original stator from the rotary viscosity meter, selecting a stator of suitable diameter and installing it into the rotary viscosity meter, then refilling the original drilling fluid between the stator and the rotor, and restarting the rotary viscosity meter for measurement. The entire process requires shutting down the rotary viscosity meter and replacing the stator, which is time-consuming. In addition, the viscosity of the drilling fluid removed from the drilling fluid pipeline will change after being left for too long, resulting in the measured drilling fluid performance not matching the actual drilling fluid performance, making it impossible to monitor the drilling fluid in real time. Furthermore, frequent stator replacement will cause the drilling fluid to be contaminated, making it impossible to accurately reflect the actual liquid parameters. Summary of the Invention

[0007] The purpose of the present disclosure is to provide a variable diameter device for measuring viscous liquids, which solves the problem that the stator in a rotational viscosity meter cannot be changed in diameter in the technical field of viscosity measurement by rotation method, and realizes the purpose of dynamically adjusting the measuring range of the meter during the viscosity measurement process.

[0008] The above-mentioned implementation objectives of the present disclosure are mainly achieved by the following technical solutions:

[0009] In a first aspect, the present disclosure provides a viscosity measurement method for measuring a viscous liquid, comprising:

[0010] S1: providing a variable diameter stator mechanism with adjustable diameter, placing the variable diameter stator mechanism in a viscous liquid to be detected, and adjusting the diameter of the variable diameter stator mechanism;

[0011] S2: Providing a driving rotor, using the driving rotor to rotate the viscous liquid to be detected, and then driving the variable diameter stator mechanism to rotate through the viscous liquid to be detected. After the rotation speeds of the driving rotor and the variable diameter stator mechanism are stable, obtaining the rotation speed of the variable diameter stator mechanism;

[0012] S3: Obtain the viscosity of the viscous liquid to be detected based on the rotational speed of the driving rotor, the rotational speed of the variable diameter stator mechanism, the rotational inertia of the driving rotor, the diameter of the driving rotor, the diameter of the variable diameter stator mechanism, and the axial size of the variable diameter stator mechanism.

[0013] In one embodiment of the present disclosure, the variable stator mechanism includes a support frame and an elastomer sleeved on the support frame, the diameter of the variable stator mechanism is the diameter of the support frame, and the axial dimension of the variable stator mechanism is the axial dimension of the support frame.

[0014] In one embodiment of the present disclosure, in step S3, the viscosity η of the viscous liquid to be detected is obtained according to the following formula:

[0015] Where, ω2 is the speed of the driving rotor; ω1 is the speed of the variable diameter stator mechanism; J is the moment of inertia of the driving rotor; R a is the inner diameter of the driving rotor; R i is the diameter of the support frame; L is the axial dimension of the support frame.

[0016] In one embodiment of the present disclosure, in S1, an adjustment structure and a roller counter are further provided, wherein the adjustment structure has an axial rod structure and an adjustment assembly, wherein the axial rod structure is arranged in the support frame, one end of the adjustment assembly is connected to the axial rod structure, and the other end is slidably connected to the support frame, so that the variable diameter stator mechanism can rotate circumferentially around the axial rod structure, and the roller counter is arranged in the adjustment assembly, and the roller counter includes a body, a roller and a counter, wherein the body is connected to the adjustment assembly, and the roller is rotatably mounted on the body; the roller is configured to roll when the adjustment assembly slides circumferentially relative to the support frame, and the counter is configured to detect the number of rotations of the roller per unit time.

[0017] In one embodiment of the present disclosure, in S2, the rotation speed of the support frame is obtained by detecting the number of rotations of the roller per unit time, and the rotation speed of the support frame is the same as the rotation speed of the variable diameter stator mechanism.

[0018] In one embodiment of the present disclosure, in S2, the rotation speed ω1 of the variable stator mechanism is obtained according to the following formula:

[0019] Where n is the number of rotations of the roller per unit time, r is the radius of the roller counter; R i is the radial radius of the supporting skeleton 11.

[0020] In one embodiment of the present disclosure, the support frame includes a first adjustment frame and a second adjustment frame, wherein a fixed end of the first adjustment frame is fixedly connected to a fixed end of the second adjustment frame, and a free end of the second adjustment frame is movably connected to an outer side of the first adjustment frame, and the diameter of the support frame is adjusted by moving the free end of the second adjustment frame along the outer side of the first adjustment frame;

[0021] The shaft structure includes a connecting rod and a movable seat, the movable seat is movably mounted on the connecting rod, one end of at least one adjustment component is hinged to the movable seat, and the other end is connected to one of the first adjustment frame and the second adjustment frame to drive the free end of the second adjustment frame to move along the outer side of the first adjustment frame.

[0022] In one embodiment of the present disclosure, the connecting rod and the movable seat are threadedly matched, and the adjustment structure also includes a motor, which is used to drive the connecting rod to rotate so that the movable seat moves along the connecting rod, thereby changing the angle between the adjustment assembly and the connecting seat, so that the free end of the second adjustment frame moves along the outer side of the first adjustment frame and reduces the diameter of the support frame.

[0023] In one embodiment of the present disclosure, the diameter of the support frame is obtained according to the number of rotations of the motor, the pitch of the thread of the connecting rod, and the angle between the adjustment assembly and the connecting seat.

[0024] In one embodiment of the present disclosure, in step S1, the diameter R of the support frame is obtained according to the following formula: i :

[0025] Among them, n i is the number of revolutions of the motor, p i is the thread pitch of the connecting rod; α i is the angle between the connecting rod and the adjustment component.

[0026] In a second aspect, the present disclosure provides a variable diameter device for measuring viscous liquids, comprising:

[0027] A variable diameter stator mechanism comprises a support frame and an elastic body sleeved on the support frame, wherein the support frame comprises a first adjustment frame and a second adjustment frame connected thereto; and

[0028] an adjustment structure comprising a connected shaft structure and at least one adjustment assembly, wherein the shaft structure is disposed within the support frame, and at least one adjustment assembly is slidably connected to the support frame so that the variable-diameter stator mechanism can rotate circumferentially around the shaft structure;

[0029] The second adjustment frame can be circumferentially movably arranged relative to the first adjustment frame through at least one adjustment component to change the radial size of the support frame.

[0030] In one embodiment of the present disclosure, the support frame has a track structure, and at least one of the adjustment components is slidably connected to the track structure so that the support frame is circumferentially rotated around the shaft structure.

[0031] In one embodiment of the present disclosure, the track structure has a first track and a second track connected to each other, the first track is arranged on the inner side of the first adjustment frame, and the second track is arranged on the inner side of the second adjustment frame. A sliding ridge that can slide and dock with the second track is formed on the outer side of the first adjustment frame. When the support frame expands radially outward, at least one adjustment component slides onto the second track via the first track.

[0032] In one embodiment of the present disclosure, the first adjustment frame has a first upper adjustment ring and a first lower adjustment ring, and the second adjustment frame has a second upper adjustment ring and a second lower adjustment ring; the first upper adjustment ring is connected to the second upper adjustment ring, and the free end of the second upper adjustment ring is movably connected to the outer side of the first upper adjustment ring, and the first lower adjustment ring is connected to the second lower adjustment ring, and the free end of the second lower adjustment ring is movably connected to the outer side of the first lower adjustment ring; wherein, at least one of the adjustment components can be circumferentially slidably connected to the first upper adjustment ring, the first lower adjustment ring, the second upper adjustment ring or the second lower adjustment ring.

[0033] In one embodiment of the present disclosure, the first adjustment frame has a first upper adjustment ring and a first lower adjustment ring, and the second adjustment frame has a second upper adjustment ring and a second lower adjustment ring; the first upper adjustment ring is connected to the second upper adjustment ring, and the free end of the second upper adjustment ring is movably connected to the outside of the first upper adjustment ring, and the first lower adjustment ring is connected to the second lower adjustment ring, and the free end of the second lower adjustment ring is movably connected to the outside of the first lower adjustment ring; wherein, the first upper adjustment ring and the second upper adjustment ring, as well as the first lower adjustment ring and the second lower adjustment ring, are all provided with the track structure.

[0034] In one embodiment of the present disclosure, the shaft structure comprises a connecting rod and a movable seat movably mounted on the connecting rod, and one end of at least one of the adjustment components is hinged to the movable seat.

[0035] In one embodiment of the present disclosure, the movable base includes a first base and a second base, the first base and the second base are movably connected to the connecting rod at intervals, there are multiple adjustment components, at least one adjustment component is connected to the first base, and at least one adjustment component is connected to the second base.

[0036] In one embodiment of the present disclosure, the shaft structure also includes a secondary connecting rod movably arranged in the connecting rod, and the movable seat includes a first base and a second base, the first base is movably connected to the connecting rod, and the second base is movably connected to the secondary connecting rod, at least one of the adjustment components is connected to the first base, and at least one of the adjustment components is connected to the second base.

[0037] In one embodiment of the present disclosure, the first adjustment frame and the second adjustment frame are arc-shaped adjustment frames made of elastic material.

[0038] In one embodiment of the present disclosure, the adjustment assembly includes an outer tube and an inner tube telescopically inserted into the outer tube, the outer tube is connected to the shaft structure, and the inner tube is connected to the support frame.

[0039] In one embodiment of the present disclosure, the first adjustment frame and the second adjustment frame are arc-shaped plates with a plurality of hollow holes.

[0040] In one embodiment of the present disclosure, a locking structure is provided between the connecting rod and the movable seat, and the locking structure includes an elastic member, one end of which is connected to the movable seat, and the other end of which is connected to a block that is locked into the connecting rod.

[0041] In one embodiment of the present disclosure, the variable diameter device for measuring viscous liquid includes a tachometer capable of measuring the rotational speed of the variable diameter stator mechanism.

[0042] In one embodiment of the present disclosure, the variable diameter device includes a roller counter, which includes a body, a roller and a counter, the body being connected to the adjustment assembly, and the roller being rotatably mounted on the body; the roller is configured to roll when the adjustment assembly slides circumferentially relative to the support frame, and the counter is configured to detect the rotational speed of the roller to detect the rotational speed of the variable diameter stator mechanism.

[0043] In one embodiment of the present disclosure, a plurality of first skeleton rods are connected between the first upper adjustment ring and the first lower adjustment ring, and a plurality of second skeleton rods are connected between the second upper adjustment ring and the second lower adjustment ring.

[0044] In one embodiment of the present disclosure, the outer circumferential surface of the connecting rod and the outer circumferential surface of the auxiliary connecting rod are respectively provided with threads, the inner circumferential wall of the first base is formed with a first internal thread segment, and the first internal thread segment is threadedly connected to the connecting rod, and the inner circumferential wall of the second base is formed with a second internal thread segment, and the second internal thread segment is threadedly connected to the auxiliary connecting rod.

[0045] In one embodiment of the present disclosure, the connecting rod is connected to the first motor through a first reducer, and the secondary connecting rod is connected to the second motor through a second reducer. The first reducer is provided with a first locking pin that can stop the connecting rod, and the reducer is provided with a second locking pin that can stop the secondary connecting rod.

[0046] In one embodiment of the present disclosure, the elastic body is a skin, the upper end of the skin is sealed and connected to the movable seat, and the lower end of the skin is sealed and connected to the movable rod passing through the shaft structure.

[0047] In one embodiment of the present disclosure, the movable rod is movably arranged in the shaft structure through a retractable mechanism, and the retractable mechanism includes a rack and a gear meshing with the rack, the rack is connected to the movable rod, and the gear is connected to a drive motor.

[0048] In an embodiment of the present disclosure, a thickness of an end portion of the first adjustment frame opposite to the second adjustment frame gradually becomes thinner toward the second adjustment frame.

[0049] Compared with the prior art, the technical solution described in the present disclosure has the following characteristics and advantages: through the cooperation of the variable diameter stator mechanism and the adjustment mechanism, the radial size of the supporting skeleton of the variable diameter stator mechanism can be changed, thereby adjusting the size of the stator in the rotational viscosity measuring instrument, that is, adjusting the range of the rotational viscosity measuring instrument. When the viscosity of drilling fluid decreases at a high speed, the range of the measuring instrument can be dynamically adjusted to achieve accurate measurement of viscosity data; at the same time, the present disclosure can also be used with a speed meter to measure the viscosity of the viscous liquid by the speed of the stator, or can be used with a torque viscometer to measure the viscosity of the viscous liquid by the rotation angle of the stator, thereby achieving viscosity measurement in multiple ways. The variable diameter device for measuring viscous liquid provided by the present disclosure can replace the stator without stopping the machine and directly adjust the stator size in the rotational viscosity measuring instrument when measuring the viscosity of the viscous liquid, thereby avoiding contamination of the viscous liquid or changes in process characteristics due to downtime when replacing stators of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a structural diagram of a variable diameter device for measuring viscous liquid according to an embodiment of the present disclosure;

[0051] FIG2 is a structural diagram of a support frame of a variable diameter device for measuring viscous liquids according to an embodiment of the present disclosure;

[0052] FIG3 is a cross-sectional view taken along line AA in FIG2 ;

[0053] FIG4 is a sectional view taken along line BB in FIG2 ;

[0054] FIG5 is a structural diagram of a support frame of a variable diameter device for measuring viscous liquids according to another embodiment of the present disclosure;

[0055] FIG6 is a structural diagram of an adjustment structure of a variable diameter device for measuring viscous liquid according to an embodiment of the present disclosure;

[0056] FIG7 is a structural diagram of an adjustment structure of a variable diameter device for measuring viscous liquid according to another embodiment of the present disclosure;

[0057] FIG8 is a structural diagram of a roller counter of a variable diameter device for measuring viscous liquids according to an embodiment of the present disclosure;

[0058] FIG9 is a structural diagram of a locking structure of a variable diameter device for measuring viscous liquids according to an embodiment of the present disclosure.

[0059] Explanation of the accompanying drawings: 1. Variable-diameter stator mechanism; 11. Support frame; 111. First adjustment frame; 1111. Sliding ridge; 1112. First upper adjustment ring; 1113. First lower adjustment ring; 112. Second adjustment frame; 1121. Second upper adjustment ring; 1122. Second lower adjustment ring; 113. Track structure; 1131. First track; 1132. Second track; 12. Elastic body; 121. Skin; 13. First skeleton rod; 14. Second skeleton rod; 2. Adjustment structure; 21. Shaft rod structure; 211. Connecting rod; 212. Moving seat; 2121. First base; 2122. Second base; 213. Secondary connecting rod; 214. Moving rod; 22. Adjustment assembly; 221. Outer tube; 222. Inner tube; 3. Locking structure; 31. Elastic member; 32. Block; 4. Roller counter; 41. Main body; 42. Roller; 43. Counter; 44. Marking part; 51. First reducer; 52. First motor; 53. First locking pin; 61. Second reducer; 62. Second motor; 63. Second locking pin; 7. Retraction mechanism; 71. Rack; 72. Gear; 8. Drive motor; 91. First platform; 92. Second platform; F. Axial direction of the shaft structure; H. Axial direction of the connecting rod; P. Axial direction of the secondary connecting rod; D. Radial direction of the supporting skeleton. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts should fall within the scope of protection of the present disclosure.

[0061] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are for the purpose of describing specific embodiments only and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] As shown in FIG1 and FIG2 , an embodiment of the present disclosure provides a variable diameter device for measuring viscous liquids, comprising:

[0064] The variable diameter stator mechanism 1 comprises a support frame 11 and an elastic body 12 sleeved on the support frame 11. The support frame 11 comprises a first adjustment frame 111 and a second adjustment frame 112 connected thereto.

[0065] The adjustment structure 2 comprises a shaft structure 21 and at least one adjustment assembly 22 connected thereto, wherein the shaft structure 21 is arranged within the support frame 11, and the at least one adjustment assembly 22 is circumferentially slidably connected to the support frame 11;

[0066] The second adjustment frame 112 can be circumferentially movably arranged relative to the first adjustment frame 111 via at least one adjustment assembly 22 to change the radial dimension of the support frame 11 .

[0067] The variable diameter device provided in the embodiment of the present disclosure adopts a variable diameter stator mechanism 1 to replace the stator in the rotational viscosity measuring instrument, wherein the support skeleton 11 is a frame that supports the variable diameter stator mechanism 1, and the elastomer 12 is sleeved on the outside of the support skeleton 11 to form the outer shape of the variable diameter stator mechanism 1. The adjustment structure 2 adjusts the radial dimension of the support skeleton 11 within the frame of the support skeleton 11 to adjust the radial dimension of the variable diameter stator mechanism 1, thereby achieving the purpose of adjusting the range of the rotational viscosity measuring instrument. At the same time, the rotational viscosity measuring instrument using the variable diameter device can achieve the purpose of not stopping the machine or replacing the stator during the measurement process, thereby achieving the effect of quickly and efficiently measuring the viscosity of viscous liquids.

[0068] In some embodiments, the first adjustment frame 111 and the second adjustment frame 112 of the variable diameter stator mechanism 1 are movably connected, the support frame 11 is a three-dimensional structure as a whole, and the elastomer 12 is made of elastic material, for example, it can be a skin. When the support frame 11 is in any size within the adjustable range, the elastomer 12 can be sleeved on the outside of the support frame 11 and maintained in a tensioned state. In this embodiment, the elastomer 12 has oleophobic and hydrophobic properties, which avoids the situation where when the stator is immersed in the viscous liquid to be tested, the viscous liquid and the elastomer 12 produce other connection relationships, thereby affecting the measurement results; the shaft structure 21 is arranged in the support frame 11. In one embodiment, the shaft structure 21 can pass through the support frame 11 and be connected to external facilities. In other embodiments, the shaft structure 21 can also be only arranged in the support frame 11. As another example, by connecting a mechanism such as a torque spring to the variable diameter stator mechanism 1, the viscosity of the viscous liquid can be measured. As another example, by measuring the rotational speed of the variable diameter stator mechanism 1, the viscosity of the viscous liquid can be measured. There is no restriction on the method of measuring the viscosity of the viscous liquid. There is no detailed restriction on the number of adjustment components 22, and the only limiting condition is to maintain the supporting shape of the support skeleton 11. In this embodiment, the adjustment component 22 is generally a rod-shaped structure. In other embodiments, the adjustment component 22 can also be a structure connected between the shaft structure 21 and the support skeleton 11, and can generate thrust on the support skeleton 11 to cause it to deform. There is no restriction on the structure of this adjustment component 22.

[0069] In this embodiment, at least one adjustment component 22 is slidingly connected to the support frame 11 along the circumference of the support frame 11, and the adjustment component 22 can generate a force along the radial direction D of the support frame 11. For example, the second adjustment frame 112 is movably connected to the first adjustment frame 111, that is, the fixed end of the second adjustment frame 112 is fixedly connected to the fixed end of the first adjustment frame 111, and the free end of the second adjustment frame 112 can be movably connected to the first adjustment frame 111 along the circumferential direction of the first adjustment frame 111; in other embodiments, both ends of the second adjustment frame 112 can also be movably connected to the first adjustment frame 111 along the circumferential direction of the first adjustment frame 111, and there is no limitation on the connection method of the first adjustment frame 111 and the second adjustment frame 112. When the second adjustment frame 112 and the first adjustment frame 111 are not subjected to the force generated by the adjustment component 22 in the radial direction D of the support frame 11, the second adjustment frame 112 and the first adjustment frame 111 are relatively stationary. In this embodiment, when the second adjustment frame 112 and the first adjustment frame 111 are subjected to the force generated by the adjustment component 22 in the radial direction D of the support frame 11, the second adjustment frame 112 moves in the circumferential direction relative to the first adjustment frame 111 through at least one adjustment component 22, and the radial size of the frame composed of the first adjustment frame 111 and the second adjustment frame 112 changes, that is, at least one of the first adjustment frame 111 is moved. The free end moves along the circumference of the second adjustment frame 112, thereby achieving the purpose of changing the radial size of the support skeleton 11; further, at least one adjustment component 22 can be circumferentially slidably connected to the support skeleton 11, avoiding the situation where the adjustment component 22 is twisted and deformed during the diameter change process of the support skeleton 11, so that the adjustment component 22 can maintain the supporting connection to the support skeleton 11; in this embodiment, when the second adjustment frame 112 and the first adjustment frame 111 are subjected to the force generated by the adjustment component 22 in the radial direction D of the support skeleton 11, the radial size of the frame composed of the first adjustment frame 111 and the second adjustment frame 112 becomes larger or smaller.

[0070] In some embodiments, as shown in Figures 1 and 2, the first adjustment frame 111 and the second adjustment frame 112 are arc-shaped and elastic. For example, the first adjustment frame 111 and the second adjustment frame 112 are each arc-shaped and made of elastic material; alternatively, the first adjustment frame 111 and the second adjustment frame 112 are each arc-shaped and made of a flexibly deformable material, such that the first adjustment frame 111 and the second adjustment frame 112 are elastic and can recover their deformation, for example, using a metal material such as copper, iron, or stainless steel. By using an arc-shaped elastic material, the first adjustment frame 111 and the second adjustment frame 112 can return to their initial state when mated, thereby improving the variable diameter capability of the variable diameter stator mechanism 1. Furthermore, the arc-shaped structure enables the first adjustment frame 111 and the second adjustment frame 112 to form a nearly circular stator shape, and the diameter change process is smoother, preventing jamming.

[0071] As an example, the frame formed by the mating connection of the first adjustment frame 111 and the second adjustment frame 112 has a tendency to change diameter inward and shrink to a minimum size state; in other embodiments, the frame formed by the mating connection of the first adjustment frame 111 and the second adjustment frame 112 may also have a tendency to change diameter outward and expand to a maximum size state, which is not limited to this.

[0072] Optionally, the first adjustment frame 111 and the second adjustment frame 112 are respectively arc-shaped structures having multiple hollow holes. By setting up the arc-shaped structure with hollow holes, the mass of the first adjustment frame 111 and the second adjustment frame 112 can be reduced, avoiding the difficulty of changing the size and diameter due to excessive mass. While reducing the mass, it can also make the variable diameter stator mechanism 1 more easily driven by the viscous liquid to rotate or rotate. It is also easier to measure the rotational torque of the variable diameter stator mechanism 1 during the process of torque measurement of viscosity. Or it is also easier to measure the rotational speed of the variable diameter stator mechanism 1 during the process of speed measurement of viscosity. In this embodiment, at least one adjustment component 22 is connected between the shaft structure 21 and the arc-shaped plate body. The adjustment component 22 generates a force along the radial direction D of the support frame 11. The arc-shaped plate body of the second adjustment frame 112 is moved along the circumferential direction of the arc-shaped plate body of the first adjustment frame 111 through the adjustment component 22.

[0073] In some embodiments, as shown in Figures 2 to 4, the support frame 11 has a track structure 113, and at least one adjustment assembly 22 is slidably connected to the track structure 113 to enable the support frame 11 to be circumferentially rotated about the shaft structure 21. By providing the track structure 113 on the support frame 11, the variable diameter stator mechanism 1 can achieve the purpose of measuring the viscosity of viscous liquids at a rotational speed. As an example, the support frame 11 is generally a cylindrical structure, the track structure 113 is arranged along the circumference of the support frame 11, and the shaft structure 21 is arranged on the axis of the cylindrical support frame 11; in other embodiments, the support frame 11 can also have other structures, which are not limited to this. Optionally, the track structure 113 is arranged on the inner side of the support skeleton 11, that is, the side of the support skeleton 11 facing the shaft structure 21. In other embodiments, the track structure 113 can also be arranged on the top side or bottom side of the support skeleton 11, and there is no restriction on this; one end of at least one adjustment component 22 can be slidably connected to the track structure 113, that is, in the process of measuring the viscosity of the viscous liquid at a rotational speed, the support skeleton 11 can slide relative to one end of the adjustment component 22. In this embodiment, the support frame 11 is composed of a first adjustment frame 111 and a second adjustment frame 112. The track structure 113 is arranged on the inner side of the first adjustment frame 111 and the inner side of the second adjustment frame 112. The fixed end of the first adjustment frame 111 is fixedly connected to the fixed end of the second adjustment frame 112. The outer side of the free end of the first adjustment frame 111 is slidably connected to the inner side of the second adjustment frame 112. In other embodiments, the outer side of the free end of the second adjustment frame 112 can also be slidably connected to the inner side of the first adjustment frame 111. There is no limitation on the positional relationship between the first adjustment frame 111 and the second adjustment frame 112.

[0074] In some embodiments, as shown in Figures 2 to 5, the track structure 113 has a first track 1131 and a second track 1132 connected to each other. The first track 1131 is arranged on the inner side of the first adjustment frame 111, and the second track 1132 is arranged on the inner side of the second adjustment frame 112. A sliding ridge 1111 is formed on the outer side of the first adjustment frame 111 and can be slidably docked with the second track 1132. When the support frame 11 is radially expanded outward, at least one adjustment component 22 slides onto the second track 1132 via the first track 1131.

[0075] The embodiment of the present disclosure provides a variable diameter device for measuring viscous liquids. By setting a first track 1131 and a second track 1132, the purpose of changing the diameter of the entire track structure 113 can be achieved. That is, the track structure 113 can change the diameter in accordance with the change of the radial dimension of the support skeleton 11. At the same time, the adjustment component 22 can slide to the second track 1132 via the first track 1131, and the risk of the adjustment component 22 being limited in the angle connected to the support skeleton 11 and then being twisted off is avoided during the process of changing the radial dimension of the support skeleton 11.

[0076] In some embodiments, the cross-sections of the first rail 1131 and the second rail 1132 are both approximately trapezoidal. In other embodiments, the cross-sections of the first rail 1131 and the second rail 1132 may also be crescent-shaped or rectangular, without limitation. As an example, as shown in FIG4 , a sliding ridge 1111 is formed on the outer side of the first adjustment frame 111, meaning that the overall shape of the first adjustment frame 111 is an outer convex shape. The outer side of the first adjustment frame 111 is slidably engaged with the second rail 1132 on the inner side of the second adjustment frame 112. The cross-section of the first adjustment frame 111 perpendicular to its extension direction is trapezoidal, while the cross-section of the second rail 1132 on the inner side of the second adjustment frame 112 is trapezoidal. In other embodiments, the overall shape of the first adjustment frame 111 and the cross-section of the second rail 1132 are not limited, and a sliding engagement is standard. In other embodiments, a separate sliding ridge 1111 may be provided on the outer side of the first adjustment frame 111 , and the sliding ridge 1111 is slidably docked with the second track 1132 . There is no limitation on the shape of the sliding ridge 1111 .

[0077] In this embodiment, when the support skeleton 11 is in the state of the smallest radial dimension, the adjustment component 22 is slidably connected to the first track 1131. In the process of the support skeleton 11 changing from the smallest radial dimension to the largest radial dimension, the adjustment component 22 provides an outward force along the radial direction D of the support skeleton 11 to the support skeleton 11. The second adjustment frame 112 moves along the circumferential direction of the first adjustment frame 111 relative to the first adjustment frame 111. The first adjustment frame 111 moves along the second track 1132 through the sliding ridge 1111. The second track 1132 inside the second adjustment frame 112 and the first track 1131 together constitute a track for sliding connection of one end of the adjustment component 22. One end of at least one adjustment component 22 slides from the first track 1131 to the second track 1132. In this embodiment, the adjustment component 22 is connected between the shaft structure 21 and the inner side of the support skeleton 11.

[0078] In some embodiments, as shown in Figures 2 to 5, the thickness of the end portion where the first adjustment frame 111 and the second adjustment frame 112 meet gradually decreases toward the second adjustment frame 112. By designing the thickness of one end portion of the first adjustment frame 111 to be thinner, a smooth transition between the first track 1131 and the second track 1132 can be achieved at the junction. This prevents vibration caused by a step when the adjustment assembly 22 slides from the first track 1131 to the second track 1132, which could affect the viscosity measurement results. It also prevents the formation of a step at the junction between the first track 1131 and the second track 1132, which could render the rotational viscosity measurement method incapable. In this embodiment, the fixed end of the first adjustment frame 111 is fixedly connected to the fixed end of the second adjustment frame 112, and the movable end of the first adjustment frame 111 is connected to the second adjustment frame 112. In other words, the thickness of the movable end of the first adjustment frame 111 gradually decreases toward the second adjustment frame 112.

[0079] In some embodiments, as shown in Figures 1 to 4, the first adjustment frame 111 has a first upper adjustment ring 1112 and a first lower adjustment ring 1113, and the second adjustment frame 112 has a second upper adjustment ring 1121 and a second lower adjustment ring 1122; the first upper adjustment ring 1112 is connected to the second upper adjustment ring 1121, and the free end of the second upper adjustment ring 1121 is movably connected to the outside of the first upper adjustment ring 1112, and the first lower adjustment ring 1113 is connected to the second lower adjustment ring 1122, and the free end of the second lower adjustment ring 1122 is movably connected to the outside of the first lower adjustment ring 1113; wherein, the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122, are both provided with a track structure 113.

[0080] The embodiment of the present disclosure provides a variable diameter device for measuring viscous liquids. The first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122 are provided to form a general frame of the support skeleton 11. At the same time, the track structure 113 is provided on the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122, so that the adjustment component 22 is respectively connected to the first upper adjustment ring 1112 and the second The upper adjustment ring 1121, and the sliding connection between the first lower adjustment ring 1113 and the second lower adjustment ring 1122, further, by dividing the support skeleton 11 into the first upper adjustment ring 1112 and the second upper adjustment ring 1121, and the first lower adjustment ring 1113 and the second lower adjustment ring 1122, facilitates the adjustment of the height of the support skeleton 11, that is, increases the force area of ​​the variable diameter stator mechanism 1, and facilitates the reduction of the starting conditions of the variable diameter stator mechanism 1 during viscosity measurement, thereby achieving a wider range of measurement and more accurate viscosity data.

[0081] In some embodiments, the first upper adjusting ring 1112 is connected to the second upper adjusting ring 1121 to form a circular frame structure, and the first lower adjusting ring 1113 is connected to the second lower adjusting ring 1122 to also roughly form a circular frame structure; the first upper adjusting ring 1112 and the second upper adjusting ring 1121, as well as the first lower adjusting ring 1113 and the second lower adjusting ring 1122 together form a cylindrical support skeleton 11; the fixed end of the first upper adjusting ring 1112 is fixedly connected to the fixed end of the second upper adjusting ring 1121, the movable end of the first upper adjusting ring 1112 is opposite to the second upper adjusting ring 1121, and the free end of the second upper adjusting ring 1121 is movably arranged along the outer side of the first upper adjusting ring 1112; the fixed end of the first lower adjusting ring 1113 is fixedly connected to the fixed end of the second lower adjusting ring 1122, the movable end of the first lower adjusting ring 1113 is opposite to the second lower adjusting ring 1122, and the free end of the second lower adjusting ring 1122 is movably arranged along the outer side of the first upper adjusting ring 1112 The outer side of the ring 1113 is movably arranged; the track structure 113 is arranged on the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122, that is, at least one adjustment component 22 is slidably connected to the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122; the circular frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 is circumferentially rotated around the shaft structure 21, and the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121 is also circumferentially rotated around the shaft structure 21. During the process of measuring viscosity at a rotational speed, the angular rotation speed of the circular frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 is the same as the angular rotation speed of the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121. In other embodiments, the diameter of the circular frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 can also be different from the diameter of the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121, so as to solve the problem that during the rotational viscosity measurement, the viscous liquid will generate rotating vortices at high speeds, thereby causing inaccurate viscosity measurement; in other embodiments, the distance between the circular frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 and the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121 is variable, so as to increase the force area of ​​the variable diameter stator mechanism 1 during the rotational viscosity measurement process.

[0082] In some embodiments, as shown in Figures 1 to 4, the first adjustment frame 111 has a first upper adjustment ring 1112 and a first lower adjustment ring 1113, and the second adjustment frame 112 has a second upper adjustment ring 1121 and a second lower adjustment ring 1122; the first upper adjustment ring 1112 is connected to the second upper adjustment ring 1121, and the free end of the second upper adjustment ring 1121 is movably connected to the outer side of the first upper adjustment ring 1112, and the first lower adjustment ring 1113 is connected to the second lower adjustment ring 1122, and the free end of the second lower adjustment ring 1122 is movably connected to the outer side of the first lower adjustment ring 1113; wherein, at least one adjustment assembly 22 can be circumferentially slidably connected to the first upper adjustment ring 1112, the first lower adjustment ring 1113, the second upper adjustment ring 1121 or the second lower adjustment ring 1122.

[0083] The support frame 11 provided by the embodiment of the present disclosure can form a generally cylindrical frame of the support frame 11 by providing a first upper adjustment ring 1112 and a second upper adjustment ring 1121, as well as a first lower adjustment ring 1113 and a second lower adjustment ring 1122. At least one adjustment assembly 22 is circumferentially slidably connected to the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122. This avoids the problem of the adjustment assembly 22 being twisted and deformed due to the fixed connection during the diameter change process of the first upper adjustment ring 1112 and the second upper adjustment ring 1121, and / or the first lower adjustment ring 1113 and the second lower adjustment ring 1122, so that the adjustment assembly 22 can maintain a stable support connection between the first upper adjustment ring 1112 and the second upper adjustment ring 1121, and / or the first lower adjustment ring 1113 and the second lower adjustment ring 1122.

[0084] In some embodiments, the frictional force between the sliding connection between at least one adjustment component 22 and the first upper adjustment ring 1112, the first lower adjustment ring 1113, the second upper adjustment ring 1121, or the second lower adjustment ring 1122 is greater than the shear force exerted by the viscous liquid on the variable diameter stator mechanism 1. Alternatively, in other embodiments, a locking member is provided between at least one adjustment component 22 and the first upper adjustment ring 1112, the first lower adjustment ring 1113, the second upper adjustment ring 1121, or the second lower adjustment ring 1122 to secure the connection between the at least one adjustment component 22 and the first upper adjustment ring 1112, the first lower adjustment ring 1113, the second upper adjustment ring 1121, or the second lower adjustment ring 1122 during torque viscosity measurement. The device of this embodiment is suitable for measuring the viscosity of viscous liquids using torque or rotation angle.

[0085] In some embodiments, as shown in FIG1 , the variable diameter device for measuring viscous liquids includes a tachometer capable of measuring the rotational speed of the variable diameter stator mechanism 1. By adopting the setting of the tachometer, the rotational speed data can be quickly obtained during the experimental process of measuring the viscosity of the viscous liquid using the stator rotational speed, thereby realizing the rapid acquisition of the viscosity of the viscous liquid. Specifically, the tachometer is arranged in the support frame 11. In other embodiments, the tachometer can also be arranged on the shaft structure 21, and there is no limitation to this. During the viscosity measurement process of this embodiment, the variable diameter stator mechanism 1 rotates as a whole, and the tachometer measures the angular speed of the variable diameter stator mechanism 1. During the viscosity measurement process of other embodiments, the support frame 11 and the elastic body 12 rotate relative to the shaft structure 21, and the tachometer measures the angular speed of the support frame 11. In other embodiments, there is no limitation to the measurement method and measurement object of the tachometer. In this embodiment, the tachometer is a laser tachometer. In other embodiments, other instruments for measuring rotational speed can also be used. In the process of measuring viscosity by speed, there is no restriction on the calculation method of the measured viscosity. In this embodiment, the driving rotor is sleeved on the outside of the variable diameter stator mechanism 1, and the space between the driving rotor and the variable diameter stator mechanism 1 is filled with the viscous liquid to be tested. The experimental steps of this embodiment are as follows:

[0086] S1: adjusting the radial dimension of the support frame 11 according to the initial viscosity of the viscous liquid to be detected and the inner diameter of the driving rotor;

[0087] S2: Setting the rotation speed of the driving rotor and starting the driving rotor. The driving rotor drives the viscous liquid to be detected and the variable diameter stator mechanism 1 to rotate. After the rotation state of each component is stable, the rotation speed of the variable diameter stator mechanism 1 is obtained.

[0088] S3: Obtain the viscosity of the viscous liquid to be detected based on the rotational speed of the driving rotor, the rotational speed of the variable diameter stator mechanism 1, the rotational inertia of the driving rotor, the inner diameter of the driving rotor, the radial dimension of the support skeleton 11, and the axial dimension of the support skeleton 11.

[0089] For example, the experimental steps of this embodiment are as follows:

[0090] S1: providing a variable diameter stator mechanism 1 with adjustable diameter, placing the variable diameter stator mechanism 1 in a viscous liquid to be detected, and adjusting the diameter of the variable diameter stator mechanism 1;

[0091] S2: Providing a driving rotor, using the driving rotor to rotate the viscous liquid to be detected, and then driving the variable diameter stator mechanism 1 to rotate through the viscous liquid to be detected. After the rotation speeds of the driving rotor and the variable diameter stator mechanism 1 are stable, obtaining the rotation speed of the variable diameter stator mechanism 1;

[0092] S3: Obtain the viscosity of the viscous liquid to be detected based on the rotational speed of the driving rotor, the rotational speed of the variable diameter stator mechanism 1, the rotational inertia of the driving rotor, the diameter of the driving rotor, the diameter of the variable diameter stator mechanism 1, and the axial size of the variable diameter stator mechanism 1.

[0093] It should be noted that, in some embodiments, the driving rotor can be mounted on the outside of the variable diameter stator mechanism 1, so that a gap for accommodating the viscous liquid to be detected is formed between the inner wall of the driving rotor and the outer wall of the variable diameter stator mechanism 1; in other embodiments, the driving rotor can also be arranged inside the variable diameter stator mechanism 1, so that a gap for accommodating the viscous liquid to be detected is formed between the outer wall of the driving rotor and the inner wall of the variable diameter stator mechanism 1.

[0094] Furthermore, in the embodiment where the variable diameter stator mechanism 1 includes a support frame 11 and an elastic body 12, the diameter (i.e., radial dimension) of the support frame 11 can be considered as the diameter of the variable diameter stator mechanism 1, the axial dimension of the support frame 11 can be considered as the axial dimension of the variable diameter stator mechanism 1, and the rotational speed of the support frame 11 can be considered as the rotational speed of the variable diameter stator mechanism 1. The outer wall of the variable diameter stator mechanism 1 refers to the side of the elastic body 12 facing the axis of the support frame 11, and the outer wall of the variable diameter stator mechanism 1 refers to the side of the elastic body 12 facing away from the axis of the support frame 11.

[0095] This application does not limit the calculation formula in the above step S3. As an example, the calculation formula in the above step S3 is as follows:

[0096] Where ω2 is the speed of the driving rotor, m / s; ω1 is the speed of the variable diameter stator mechanism 1, m / s; J is the moment of inertia of the driving rotor, Kg·m 2 ; R a is the inner diameter of the driving rotor, m; R i is the radial dimension of the support frame 11, m; L is the axial dimension of the support frame 11, m; η is the viscosity of the viscous liquid, Ns / m 2 .

[0097] In some embodiments, as shown in Figures 1, 2, 6 to 8, a roller counter 4 is connected to the end of the adjustment component 22 connected to the track structure 113. The roller counter 4 has a main body 41 and a roller 42 rotatably mounted outside the main body 41. The main body 41 is connected to the adjustment component 22, and the roller 42 is in sliding contact with the track structure 113. A counter 43 is provided on the main body 41, and a marking portion 44 corresponding to the counter 43 is provided on the roller 42.

[0098] The roller counter 4 provided in the embodiment of the present disclosure can facilitate the movement of the track structure 113 relative to the adjustment component 22, which is more conducive to the rotation of the support frame 11 around the adjustment component 22 during the viscosity measurement process. During the viscosity measurement process, the linear rotation speed of the support frame 11 can be quickly obtained through the setting of the counter 43, and the radius of the variable diameter stator mechanism 1 can be obtained through the distance of the roller counter 4 relative to the shaft, and then the rotation speed of the support frame 11 can be obtained, that is, the rotation speed of the variable diameter stator mechanism 1 in the above embodiment.

[0099] In some embodiments, the roller counter 4 includes a cylindrical body 41 and a roller 42 sleeved on the outside of the body 41 along the circular side of the body 41. The roller 42 is generally hollow cylindrical, and there is a certain fitting gap between the body 41 and the roller 42. One end of the adjustment component 22 is connected to the top surface of the body 41. The outer side surface of the body 41 is provided with a counter 43. The outer side surface of the roller 42 is in sliding contact with the track structure 113, and the inner side surface of the roller 42 is provided with a marking portion 44. In the process of the roller 42 rotating around the body 41, the roller 42 rotates one circle, and the marking portion 44 contacts the counter 43 once. The counter 43 records the number of circles rotated by the roller 42 per unit time. According to the radius of the roller counter 4 and the radial radius of the support frame 11, the rotation speed of the support frame 11 can be obtained, that is, the rotation speed of the variable diameter stator mechanism 1 in the above embodiment. In other embodiments, there is no restriction on the method for obtaining the rotation speed of the support frame 11. The calculation formula of the rotation speed of the support frame 11 in this embodiment is as follows:

[0100] Wherein, ω is the rotation speed of the support frame 11, m / s; n is the number of rotations of the roller 42 per unit time, r is the radius of the roller counter 4, m; R i is the radial radius of the support frame 11, m.

[0101] In some embodiments, as shown in FIG. 1 , a plurality of first skeleton rods 13 are connected between the first upper adjustment ring 1112 and the first lower adjustment ring 1113 , and a plurality of second skeleton rods 14 are connected between the second upper adjustment ring 1121 and the second lower adjustment ring 1122 .

[0102] The support skeleton 11 provided in the embodiment of the present disclosure can strengthen the structural stability and integrity between the first upper adjustment ring 1112 and the first lower adjustment ring 1113, and strengthen the structural stability and integrity between the second upper adjustment ring 1121 and the second lower adjustment ring 1122 by establishing the first skeleton rod 13 and the second skeleton rod 14. At the same time, as an example of the present application, the establishment of the first skeleton rod 13 and the second skeleton rod 14 can achieve the circumferential movement of the first lower adjustment ring 1113 relative to the second lower adjustment ring 1122 when the second upper adjustment ring 1121 moves circumferentially relative to the first upper adjustment ring 1112.

[0103] Exemplarily, a plurality of first skeleton rods 13 are connected between the first upper adjustment ring 1112 and the first lower adjustment ring 1113 along the axial direction F of the shaft structure 21, and the plurality of first skeleton rods 13 are spaced apart along the circumferential direction of the support skeleton 11; a plurality of second skeleton rods 14 are connected between the second upper adjustment ring 1121 and the second lower adjustment ring 1122 along the axial direction F of the shaft structure 21, and the plurality of second skeleton rods 14 are spaced apart along the circumferential direction of the support skeleton 11; in other embodiments, the first skeleton rod 13 and the second skeleton rod 14 can also be retractable rods to facilitate adjustment of the first lower adjustment ring 1113 and the second lower adjustment ring The distance between the circular frame structure composed of the adjustment ring 1122 and the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121; in other embodiments, multiple first skeleton rods 13 can also be connected between the first upper adjustment ring 1112 and the first lower adjustment ring 1113 along a direction at a certain angle to the axial direction F of the shaft structure 21, and multiple second skeleton rods 14 can also be connected between the second upper adjustment ring 1121 and the second lower adjustment ring 1122 along a direction at a certain angle to the axial direction F of the shaft structure 21. There is no restriction on the connection direction of the first skeleton rod 13 and the second skeleton rod 14.

[0104] In some embodiments, as shown in FIG. 1 , FIG. 6 and FIG. 7 , the shaft structure 21 includes a connecting rod 211 and a movable seat 212 movably mounted on the connecting rod 211 , and one end of at least one adjustment component 22 is hinged to the movable seat 212 .

[0105] The movable seat 212 and connecting rod 211 provided in the embodiment of the present disclosure can enable one end of the adjustment component 22 to move on the connecting rod 211. At the same time, by changing the position of the movable seat 212 on the connecting rod 211, the angle between the adjustment component 22 and the connecting rod 211 can be changed, thereby realizing the variable diameter support of the support frame 11 by the adjustment component 22.

[0106] As an example, one end of the adjustment assembly 22 is hingedly connected to the movable seat 212. In this embodiment, the angle between the adjustment assembly 22 and the axial direction H of the connecting rod 211 can be changed by moving the movable seat 212. In this embodiment, when the movable seat 212 moves upward along the axial direction H of the connecting rod 211, the angle between the adjustment assembly 22 and the connecting rod 211 decreases, and the radial dimension of the support frame 11 decreases. When the movable seat 212 moves downward along the axial direction H of the connecting rod 211, the angle between the adjustment assembly 22 and the connecting rod 211 increases, and the radial dimension of the support frame 11 increases. In other embodiments, there is no limitation on the relationship between the moving direction of the movable seat 212 and the change in the size of the angle between the adjustment assembly 22 and the axial direction H of the connecting rod 211. In this embodiment, the other end of the adjustment assembly 22 is connected to the support frame 11. In other embodiments, the other end of the adjustment assembly 22 can also be connected to the roller counter 4, and this is not limited. In other embodiments, when the movable seat 212 moves downward along the axial direction H of the connecting rod 211, the angle between the adjustment assembly 22 and the connecting rod 211 becomes smaller, and the radial dimension of the support frame 11 becomes smaller. There is no restriction on the specific position of the movable seat 212 on the connecting rod 211.

[0107] In some embodiments, as shown in FIG9 , a locking structure 3 is provided between the connecting rod 211 and the movable seat 212. The locking structure 3 includes an elastic member 31, one end of which is connected to the movable seat 212, and the other end of which is connected to a block 32 that snaps into the connecting rod 211. The locking structure 3 can fix the movable seat 212 relative to the connecting rod 211 to prevent the movable seat 212 from moving along the axial direction H of the connecting rod 211 on the connecting rod 211, thereby preventing the radial dimension of the support frame 11 from changing. At the same time, the adjustment assembly 22 and the connecting rod 211 form a fixed structural relationship in the circumferential direction of the connecting rod 211 to prevent the adjustment assembly 22 from rotating circumferentially around the connecting rod 211, thereby affecting the viscosity measurement process.

[0108] In some embodiments, the locking structure 3 is arranged inside the moving seat 212. In other embodiments, the locking structure 3 can also be arranged on the outside of the moving seat 212, and there is no limitation on this. The elastic member 31 of the locking structure 3 is compressed and connected between the moving seat 212 and one end of the block 32, and the other end of the block 32 is snapped into the connecting rod 211 to lock the moving connection relationship between the moving seat 212 and the connecting rod 211. When the moving seat 212 can slide relative to the connecting rod 211, the elastic member 31 is compressed to disengage the block 32 from the connecting rod 211, thereby realizing the free movement of the moving seat 212 in the axial direction H of the connecting rod 211. When the moving seat 212 is locked relative to the connecting rod 211, the elastic member 31 is released to snap the block 32 into the connecting rod 2 11. To achieve a locking relationship between the movable seat 212 and the connecting rod 211, in one embodiment, a pull rod mechanism can be used to pull the card block 32 to achieve compression and release of the elastic member 31. In another embodiment, an electromagnetic relay and a magnetic card block 32 can also be used. When the electromagnetic relay is powered on, the card block 32 moves in the direction of the electromagnetic relay and compresses the elastic member 31, so that the card block 32 is separated from the connecting rod 211, and the movable seat 212 can move freely in the axial direction H of the connecting rod 211; when the electromagnetic relay is powered off, the elastic member 31 pushes the card block 32 to engage with the connecting rod 211, and achieves a locking relationship between the movable seat 212 and the connecting rod 211. In other embodiments, there is no restriction on the method of compressing and releasing the elastic member 31.

[0109] In some embodiments, as shown in Figure 1, the movable base 212 includes a first base 2121 and a second base 2122, and the first base 2121 and the second base 2122 are movably connected to the connecting rod 211 at intervals. There are multiple adjustment components 22, and at least one adjustment component 22 is connected to the first base 2121, and at least one adjustment component 22 is connected to the second base 2122.

[0110] By establishing the first base 2121 and the second base 2122, the radial dimensions of the support skeleton 11 can be adjusted at the same time, so that the support skeleton 11 can quickly and conveniently adjust its radial dimensions. At the same time, when the first base 2121 and the second base 2122 are respectively connected to different positions of the support skeleton 11, the first base 2121 or the second base 2122 can independently adjust the radial dimensions of the corresponding positions of the support skeleton 11, for example, adjusting the support skeleton 11 from a cylindrical shape to a truncated cone shape, which is beneficial to avoiding the phenomenon that the viscous liquid to be detected generates eddy currents due to the high speed of the driving stator during the process of measuring viscosity at a speed of the variable diameter stator mechanism 1, and is beneficial to increasing the effective speed measurement range of the speed viscosity meter.

[0111] In some embodiments, the first base 2121 and the second base 2122 are movably connected to the connecting rod 211 at intervals, the first base 2121 is connected to the support frame 11 through at least one adjustment component 22, and the second base 2122 is connected to the support frame 11 through at least one adjustment component 22. As an example, the first base 2121 is connected to the first upper adjustment ring 1112 and / or the second upper adjustment ring 1121 through at least one adjustment component 22, and the second base 2122 is connected to the first lower adjustment ring 1113 and / or the second lower adjustment ring 1122 through at least one adjustment component 22, wherein the first base 2121 is connected to the support frame 11 through at least one adjustment component 22 independently controls the radial dimensions of the circular frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121, and the second base 2122 independently controls the radial dimensions of the circular frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 through at least one adjustment component 22; as another example, the first base 2121 can also be connected to the first adjustment frame 111 through at least one adjustment component 22, and the second base 2122 can also be connected to the second adjustment frame 112 through at least one adjustment component 22; in other embodiments, there is no restriction on the connection relationship between the first base 2121, the second base 2122 and the support frame 11.

[0112] In some embodiments, as shown in Figure 1, the shaft structure 21 also includes a secondary connecting rod 213 that is movably inserted into the connecting rod 211, and the movable base 212 includes a first base 2121 and a second base 2122. The first base 2121 is movably connected to the connecting rod 211, and the second base 2122 is movably connected to the secondary connecting rod 213. At least one adjustment component 22 is connected to the first base 2121, and at least one adjustment component 22 is connected to the second base 2122.

[0113] The variable diameter device for measuring viscous liquids provided in the embodiment of the present disclosure can adjust the axial size of the support frame 11 by adopting the connecting rod 211 and the auxiliary connecting rod 213 arranged inside and outside, which is beneficial to increase the force-bearing area of ​​the variable diameter stator mechanism 1, thereby reducing the starting conditions of the variable diameter stator structure and expanding the viscosity measurement range of the variable diameter device.

[0114] In some embodiments, the secondary connecting rod 213 is inserted into the connecting rod 211, and one end of the secondary connecting rod 213 passes through the connecting rod 211. The axial direction P of the secondary connecting rod 213 is the same as the axial direction H of the connecting rod 211. The first base 2121 is movably connected to the connecting rod 211, and the second base 2122 is movably connected to the end of the secondary connecting rod 213 passing through the connecting rod 211. In this embodiment, the first base 2121 is connected to the support frame 11 through at least one adjustment component 22, and the second base 2122 is connected to the support frame 11 through at least one adjustment component 22. As an example, the first The base 2121 is connected to the first upper adjustment ring 1112 and / or the second upper adjustment ring 1121 through at least one adjustment component 22, and the second base 2122 is connected to the first lower adjustment ring 1113 and / or the second lower adjustment ring 1122 through at least one adjustment component 22; as another example, the first base 2121 is connected to the first adjustment frame 111 through at least one adjustment component 22, and the second base 2122 is connected to the second adjustment frame 112 through at least one adjustment component 22; in other embodiments, there is no restriction on the connection method between the first base 2121, the second base 2122 and the support frame 11.

[0115] In some embodiments, as shown in Figure 1, the outer circumferential surface of the connecting rod 211 and the outer circumferential surface of the auxiliary connecting rod 213 are respectively provided with threads. Optionally, the connecting rod 211 and the auxiliary connecting rod 213 are both screw rods, and the inner circumferential wall of the first base 2121 is formed with a first internal thread segment, which is threadedly connected to the connecting rod 211, and the inner circumferential wall of the second base 2122 is formed with a second internal thread segment, which is threadedly connected to the auxiliary connecting rod 213.

[0116] The variable diameter device provided in the embodiment of the present disclosure realizes rotational diameter change by setting both the connecting rod 211 and the auxiliary connecting rod 213 as screw rods, that is, the first base 2121 or the second base 2122 can be moved on the screw by rotating the screw rod, thereby changing the angle between the adjustment component 22 and the axial direction H of the connecting rod 211, thereby achieving the purpose of adjusting the support frame 11.

[0117] In this embodiment, the first base 2121 is threadedly connected to the connecting rod 211 through the first internal thread segment, and the second base 2122 is threadedly connected to the auxiliary connecting rod 213 through the second internal thread segment. In this embodiment, the friction force of the spiral connection between the first base 2121 and the connecting rod 211 is less than the friction force between the adjustment component 22 and the track structure 113, that is, when the connecting rod 211 rotates, the first base 2121 moves along the axial direction H of the connecting rod 211, and the axial direction H of the adjustment component 22 and the connecting rod 211 is less than the friction force between the adjustment component 22 and the track structure 113. The angle between the second base 2122 and the auxiliary connecting rod 213 changes, and the adjustment component 22 drives the radial size of the support frame 11 to change. At the same time, the friction force of the spiral connection between the second base 2122 and the auxiliary connecting rod 213 is less than the friction force between the adjustment component 22 and the track structure 113. That is, when the auxiliary connecting rod 213 rotates, the second base 2122 moves along the axial direction P of the auxiliary connecting rod 213, and the angle between the adjustment component 22 and the axial direction P of the auxiliary connecting rod 213 changes, and the adjustment component 22 drives the radial size of the support frame 11 to change.

[0118] During the process of measuring viscosity at a rotational speed, in one embodiment, a locking structure 3 is provided between the first base 2121 and the connecting rod 211, and a locking structure 3 is also provided between the second base 2122 and the connecting rod 211, and the support skeleton 11 rotates around the circumferential direction of the connecting rod 211 through the track structure 113; in other embodiments, the first base 2121 has a rotating part that rotates circumferentially around the connecting rod 211, and the adjustment component 22 is connected to the rotating part of the first base 2121, and the second base 2122 also has a rotating part that rotates circumferentially around the connecting rod 211, and the adjustment component 22 is connected to the rotating part of the second base 2122, and the support skeleton 11 and the adjustment component 22 rotate circumferentially around the shaft structure 21 together, and there is no restriction on the method of making the support skeleton 11 rotate circumferentially around the connecting rod 211.

[0119] In some embodiments, as shown in Figure 1, the connecting rod 211 is connected to the first motor 52 through a first reducer 51, and the secondary connecting rod 213 is connected to the second motor 62 through a second reducer 61. The first reducer 51 is provided with a first locking pin 53 that can stop the connecting rod 211, and the reducer is provided with a second locking pin 63 that can stop the secondary connecting rod 213.

[0120] The variable diameter device provided in the embodiment of the present disclosure can quickly control the rotation of the screw structure such as the connecting rod 211 by setting a motor and a reducer, so as to control the movement of the movable seat 212 in the axial direction H of the connecting rod 211, thereby achieving the purpose of changing the radial dimension of the support skeleton 11 through electrical control. At the same time, the locking pin located in the reducer can lock the rotation of the connecting rod 211 itself, thereby avoiding the risk of invalid measurement results due to the rotation of the connecting rod 211 during the process of measuring the viscosity of viscous liquid at a rotation speed.

[0121] In some embodiments, the first motor 52 and the first reducer 51 are installed on the first platform 91, and the second reducer 61 and the second motor 62 are installed on the second platform 92. The distance between the first platform 91 and the second platform 92 in the axial direction H of the connecting rod 211 can be adjusted according to the distance of the relative movement of the connecting rod 211 and the auxiliary connecting rod 213; the first motor 52 is connected to the first reducer 51 in transmission connection, and the first reducer 51 is connected to the connecting rod 211 in transmission connection, that is, the first motor 52 is connected to the connecting rod 211 in transmission connection through the first reducer 51, and the second motor 62 is connected to the second reducer The second motor 62 is connected to the auxiliary connecting rod 213 through the second reducer 61. In this embodiment, the radial diameter of the support frame 11 can be obtained according to the pitch of the connecting rod 211, the pitch of the auxiliary connecting rod 213, the length of the adjustment component 22, and the angle between the adjustment component 22 and the axial direction H of the connecting rod 211. In other words, by controlling the number of rotations of the first motor 52 and the second motor 62, precise diameter variation can be achieved. The calculation method in this embodiment is as follows:

[0122] Among them, R i1 R is the radial radius of the support frame 11 corresponding to the first base 2121 or the radial radius of the frame composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121 corresponding to the first base 2121, m; i2 is the radial radius of the support skeleton 11 corresponding to the second base 2122 or the radial radius of the frame composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 corresponding to the second base 2122, m; n1 is the number of rotations of the first motor 52, n2 is the number of rotations of the second motor 62, p1 is the pitch of the connecting rod 211, m; p2 is the pitch of the secondary connecting rod 213, m; α1 is the complementary angle between the connecting rod 211 and the adjustment component 22 (that is, the angle when the adjustment component 22 is perpendicular to the connecting rod 211 is α1=0°, and the angle when the adjustment component 22 is parallel to the connecting rod 211 is α1=90°); α2 is the complementary angle between the secondary connecting rod 213 and the adjustment component 22 (that is, the angle when the adjustment component 22 is perpendicular to the secondary connecting rod 213 is α2=0°, and the angle when the adjustment component 22 is parallel to the secondary connecting rod 213 is α2=90°).

[0123] In some embodiments, as shown in FIG1 , the elastic body 12 is a skin 121. The upper end of the skin 121 is sealedly connected to the movable seat 212, and the lower end of the skin 121 is sealedly connected to the movable rod 214 that passes through the shaft structure 21. By providing the skin 121, the skin 121 can be sealedly sleeved on the outside of the support frame 11 to simulate the stator housing. During the viscosity measurement process, the viscous liquid contacts the skin 121, thereby driving the variable diameter stator mechanism 1 to rotate or spin.

[0124] As an example, the upper end of the skin 121 is sealably connected to the rotating structure of the movable seat 212, allowing the skin 121 to rotate circumferentially around the connecting rod 211. In other embodiments, the upper end of the skin 121 can also be connected to the rotating structure of the first base 2121, allowing the skin 121 to rotate circumferentially around the connecting rod 211. There is no limitation on the connection method of the upper end of the skin 121. The movable rod 214 is inserted into the shaft structure 21. In this embodiment, the movable rod 214 is inserted into the secondary connecting rod 213. In other embodiments, the movable rod 214 can also be inserted only into the connecting rod 211. There is no limitation on this. In this embodiment, both ends of the skin 121 are sealably connected to prevent leakage of viscous liquids. The material of the skin 121 in this embodiment is a material with a certain degree of elasticity, flexibility, and oleophobicity and hydrophobicity, namely rubber (styrene-butadiene rubber). In other embodiments, rubber polymers (silicone rubber), elastic fabric coated with a waterproof coating, etc. can also be used. There is no limitation on this.

[0125] In some embodiments, as shown in FIG1 , the moving rod 214 is movably provided in the shaft structure 21 through the retracting mechanism 7. The retracting mechanism 7 includes a rack 71 and a gear 72 meshing with the rack 71. The rack 71 is connected to the moving rod 214, and the gear 72 is connected to the drive motor 8. The skin 121 can be loosened or tightened by the retracting mechanism 7 to avoid the skin 121 from being too loosely wrapped after the supporting skeleton 11 changes diameter, thereby causing inaccurate viscosity measurement results. For example, the drive motor 8 is arranged on the first platform 91, and the gear 72 is arranged at the output end of the drive motor 8. The end of the moving rod 214 that passes through the connecting rod 211 is provided with a rack 71. The rack 71 at one end of the moving rod 214 is meshed with the gear 72 of the retracting mechanism 7, and the moving rod 214 is movably provided in the connecting rod 211. The lower end of the movable rod 214 is sealed and connected to the lower end of the skin 121. When the skin 121 is too loose, the driving motor 8 rotates, and then drives the movable rod 214 to move upward along the axial direction H of the connecting rod 211 through the retraction mechanism 7 to achieve the tensioning setting.

[0126] In some embodiments, as shown in Figures 1 and 6, the adjustment assembly 22 includes an outer tube 221 and an inner tube 222 that is telescopically inserted into the outer tube 221. The outer tube 221 is connected to the shaft structure 21, and the inner tube 222 is connected to the support frame 11. By configuring the adjustment assembly 22 as a telescopic rod-shaped structure, the adjustment assembly 22 can quickly adjust the radial dimensions of the support frame 11. As an example, the outer tube 221 is hinged to the movable seat 212, and the inner tube 222 is circumferentially slidably connected to the support frame 11; in other embodiments, the outer tube 221 can also be hinged to the first base 2121 or the second base 2122, and the inner tube 222 can also be circumferentially slidably connected to the first adjustment frame 111 or the second adjustment frame 112, without limitation.

[0127] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above description is only a specific embodiment of the present disclosure and is not intended to limit the scope of protection of the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A viscosity measurement method for measuring viscous liquids, wherein, Including: S1: Provide a variable-diameter stator mechanism with adjustable diameter, place the variable-diameter stator mechanism in the viscous liquid to be detected, and adjust the diameter of the variable-diameter stator mechanism; S2: Provide a driving rotor, use the driving rotor to drive the viscous liquid to be detected to rotate, and then drive the variable-diameter stator mechanism to rotate through the viscous liquid to be detected. After the rotational speeds of the driving rotor and the variable-diameter stator mechanism are stable, obtain the rotational speed of the variable-diameter stator mechanism; S3: Obtain the viscosity of the viscous liquid to be detected according to the rotational speed of the driving rotor, the rotational speed of the variable-diameter stator mechanism, the moment of inertia of the driving rotor, the diameter of the driving rotor, the diameter of the variable-diameter stator mechanism, and the axial dimension of the variable-diameter stator mechanism.

2. The viscosity measurement method for measuring a viscous liquid according to claim 1, wherein, The variable stator mechanism includes a support skeleton and an elastomer sleeved on the support skeleton. The diameter of the variable stator mechanism is the diameter of the support skeleton, and the axial dimension of the variable stator mechanism is the axial dimension of the support skeleton.

3. The viscosity measurement method for measuring a viscous liquid according to claim 2, wherein, In the step S3, the viscosity η of the viscous liquid to be detected is obtained according to the following formula: Among them, ω2 is the rotational speed of the driving rotor; ω1 is the rotational speed of the variable-diameter stator mechanism; J is the moment of inertia of the driving rotor; R a is the inner diameter of the driving rotor; R i is the diameter of the support skeleton; L is the axial dimension of the support skeleton.

4. The viscosity measurement method for measuring a viscous liquid according to claim 3, wherein, In the S1, an adjustment structure and a roller counter are further provided. The adjustment structure has a shaft rod structure and an adjustment component. The shaft rod structure is arranged in the support skeleton. One end of the adjustment component is connected to the shaft rod structure, and the other end is slidably connected to the support skeleton, so that the variable-diameter stator mechanism can rotate circumferentially around the shaft rod structure. The roller counter is arranged on the adjustment component. The roller counter includes a body, a roller and a counter. The body is connected to the adjustment component, and the roller is rotatably sleeved on the body; the roller is configured to roll when the adjustment component slides circumferentially relative to the support skeleton, and the counter is configured to detect the number of rotations of the roller per unit time.

5. The viscosity measurement method for measuring a viscous liquid according to claim 4, wherein, In the S2, the rotational speed of the support skeleton is obtained by detecting the number of rotations of the roller per unit time, and the rotational speed of the support skeleton is the same as that of the variable-diameter stator mechanism.

6. The viscosity measurement method for measuring a viscous liquid according to claim 5, wherein, In the step S2, the rotational speed ω1 of the variable stator mechanism is obtained according to the following formula: where n is the number of rotations of the roller per unit time, r is the radius of the roller counter; R i is the radial radius of the support frame 11.

7. The viscosity measurement method for measuring a viscous liquid according to any one of claims 4-5, wherein, The support skeleton includes a first adjustment frame and a second adjustment frame. The fixed end of the first adjustment frame is fixedly connected to the fixed end of the second adjustment frame. The free end of the second adjustment frame is movably connected to the outside of the first adjustment frame. By moving the free end of the second adjustment frame along the outside of the first adjustment frame, the diameter of the support skeleton is adjusted; The shaft rod structure includes a connecting rod and a moving seat. The moving seat is movably sleeved on the connecting rod. One end of at least one adjustment component is hinged to the moving seat and the other end is connected to one of the first adjustment frame and the second adjustment frame to drive the free end of the second adjustment frame to move along the outside of the first adjustment frame.

8. The viscosity measurement method for measuring a viscous liquid according to claim 7, wherein, The connecting rod and the moving seat are in threaded cooperation. The adjustment structure further includes a motor. The motor is used to drive the connecting rod to rotate, so that the moving seat moves along the connecting rod, thereby changing the included angle between the adjustment component and the connecting seat, so that the free end of the second adjustment frame moves along the outside of the first adjustment frame and reduces the diameter of the support skeleton.

9. The viscosity measurement method for measuring a viscous liquid according to claim 8, wherein, Obtain the diameter of the support skeleton according to the number of rotation cycles of the motor, the pitch of the thread of the connecting rod, and the angle between the adjustment assembly and the connecting seat.

10. The viscosity measurement method for measuring a viscous liquid according to claim 9, wherein, In the step S1, the diameter R of the support skeleton is obtained according to the following formula i :[[]] Among them, n i is the number of rotation cycles of the motor, p i is the pitch of the connecting rod; α i is the angle between the connecting rod and the adjustment assembly.

11. A variable-diameter device for measuring viscous liquids, wherein, Comprising: A variable-diameter stator mechanism having a support skeleton and an elastomer sleeved on the support skeleton, the support skeleton having a first adjustment frame and a second adjustment frame connected to each other; And An adjustment structure having a connected shaft rod structure and at least one adjustment assembly, the shaft rod structure being arranged inside the support skeleton, and at least one of the adjustment assemblies being circumferentially slidably connected to the support skeleton; Wherein, the second adjustment frame can be circumferentially movably arranged relative to the first adjustment frame through at least one of the adjustment assemblies to change the radial dimension of the support skeleton.

12. The variable diameter device for measuring viscous liquid according to claim 11, wherein, The support skeleton has an orbital structure, and at least one of the adjustment assemblies is in sliding contact with the orbital structure so that the support skeleton is circumferentially rotatably arranged around the shaft rod structure.

13. The variable-diameter device for measuring viscous liquid according to claim 12, wherein, The orbital structure has a first orbit and a second orbit connected to each other, the first orbit is arranged inside the first adjustment frame, the second orbit is arranged inside the second adjustment frame, a sliding rib capable of slidingly docking with the second orbit is formed on the outside of the first adjustment frame, and in a state where the support skeleton expands radially outward along its own direction, at least one of the adjustment assemblies slides from the first orbit to the second orbit.

14. The variable diameter device for measuring viscous liquid according to any one of claims 11-13, wherein, The first adjustment frame has a first upper adjustment ring and a first lower adjustment ring, and the second adjustment frame has a second upper adjustment ring and a second lower adjustment ring; the first upper adjustment ring is connected to the second upper adjustment ring, the free end of the second upper adjustment ring is movably connected to the outside of the first upper adjustment ring, the first lower adjustment ring is connected to the second lower adjustment ring, and the free end of the second lower adjustment ring is movably connected to the outside of the first lower adjustment ring; wherein, at least one of the adjustment assemblies is circumferentially slidably connected to the first upper adjustment ring, the first lower adjustment ring, the second upper adjustment ring or the second lower adjustment ring.

15. The variable-diameter device for measuring viscous liquids according to claim 12 or 13, wherein, The first adjustment frame has a first upper adjustment ring and a first lower adjustment ring, and the second adjustment frame has a second upper adjustment ring and a second lower adjustment ring; the first upper adjustment ring is connected to the second upper adjustment ring, the free end of the second upper adjustment ring is movably connected to the outside of the first upper adjustment ring, the first lower adjustment ring is connected to the second lower adjustment ring, and the free end of the second lower adjustment ring is movably connected to the outside of the first lower adjustment ring; wherein, the orbital structure is provided on both the first upper adjustment ring and the second upper adjustment ring, and on both the first lower adjustment ring and the second lower adjustment ring.

16. The variable diameter device for measuring viscous liquid according to any one of claims 11-15, wherein, The shaft rod structure has a connecting rod and a movable seat sleeved on the connecting rod, and one end of at least one of the adjustment assemblies is hinged to the movable seat.

17. The variable-diameter device for measuring viscous liquid according to claim 16, wherein, The movable seat includes a first base and a second base, the first base and the second base are movably connected to the connecting rod at intervals, there are multiple adjustment assemblies, at least one of the adjustment assemblies is connected to the first base, and at least one of the adjustment assemblies is connected to the second base.

18. The variable-diameter device for measuring viscous liquid according to claim 16, wherein, The shaft rod structure also includes a secondary connecting rod movably inserted into the connecting rod, and the movable seat includes a first base and a second base, the first base is movably connected to the connecting rod, the second base is movably connected to the secondary connecting rod, at least one of the adjustment components is connected to the first base, and at least one of the adjustment components is connected to the second base.

19. The variable-diameter device for measuring viscous liquid according to any one of claims 11-18, wherein, The first adjustment frame and the second adjustment frame are arc-shaped and elastic.

20. The variable-diameter device for measuring viscous liquid according to any one of claims 11-19, wherein, The adjustment assembly comprises an outer tube and an inner tube telescopically inserted into the outer tube, the outer tube is connected to the shaft structure, and the inner tube is connected to the support frame.

21. The variable-diameter device for measuring viscous liquid according to any one of claims 11-20, wherein, The first adjustment frame and the second adjustment frame are arc-shaped structures with a plurality of hollow holes.

22. The variable-diameter device for measuring viscous liquid according to any one of claims 16-18, wherein, A locking structure is provided between the connecting rod and the moving seat. The locking structure comprises an elastic member, one end of which is connected to the moving seat, and the other end of which is connected to a clamping block clamped on the connecting rod.

23. The variable diameter device for measuring viscous liquid according to any one of claims 11-22, wherein, The variable diameter device comprises a speed meter, and the speed meter is used to measure the rotation speed of the variable diameter stator mechanism.

24. The variable-diameter device for measuring viscous liquids according to claim 12 or 13, wherein, The variable diameter device includes a roller counter, which includes a body, a roller and a counter. The body is connected to the adjustment component, and the roller is rotatably mounted on the body. The roller is configured to roll when the adjustment component slides circumferentially relative to the support frame, and the counter is configured to detect the rotation speed of the roller to detect the rotation speed of the variable diameter stator mechanism.

25. The variable-diameter device for measuring viscous liquid according to any one of claims 11-24, wherein, A plurality of first skeleton rods are connected between the first upper adjustment ring and the first lower adjustment ring, and a plurality of second skeleton rods are connected between the second upper adjustment ring and the second lower adjustment ring.

26. The variable diameter device for measuring viscous liquid according to claim 18, wherein, The outer circumferential surface of the connecting rod and the outer circumferential surface of the auxiliary connecting rod are respectively provided with threads, the inner circumferential wall of the first base is formed with a first internal thread segment, the first internal thread segment is threadedly connected to the connecting rod, and the inner circumferential wall of the second base is formed with a second internal thread segment, the second internal thread segment is threadedly connected to the auxiliary connecting rod.

27. The variable-diameter device for measuring viscous liquid according to claim 26, wherein, The connecting rod is connected to the first motor through a first reducer, and the secondary connecting rod is connected to the second motor through a second reducer. The first reducer is provided with a first locking pin capable of stopping the connecting rod, and the reducer is provided with a second locking pin capable of stopping the secondary connecting rod.

28. The variable diameter device for measuring viscous liquid according to claim 26, wherein, The elastic body is a skin, the upper end of the skin is sealingly connected to the moving seat, and the lower end of the skin is sealingly connected to the moving rod penetrating the shaft rod structure.

29. The variable-diameter device for measuring viscous liquid according to any one of claims 28, wherein, The moving rod is movably arranged in the shaft rod structure through a retractable mechanism. The retractable mechanism includes a rack and a gear meshing with the rack. The rack is connected to the moving rod, and the gear is connected to a driving motor.

30. The variable-diameter device for measuring viscous liquids according to any one of claims 1-23, wherein, The thickness of the end portion of the first adjustment frame which is opposite to the second adjustment frame gradually becomes thinner toward the second adjustment frame.

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