Variable diameter device for measuring viscous liquid

Abstract

The invention provides a variable-diameter device for measuring viscous liquid, and the device comprises a variable-diameter stator mechanism which is provided with a supporting framework and an elastic body sleeving the supporting framework, and the supporting framework is provided with a first adjusting frame and a second adjusting frame which are connected with each other; the adjusting structure is provided with a shaft rod structure and at least one adjusting assembly which are connected, the shaft rod structure is arranged in the supporting framework, and the at least one adjusting assembly is connected with the supporting framework in a circumferential sliding mode; the second adjusting frame can be movably arranged relative to the first adjusting frame in the circumferential direction through at least one adjusting assembly so as to change the radial size of the supporting framework. According to the variable-diameter device provided by the invention, the requirement that the diameter of the stator cannot be changed in a rotary viscosity measuring instrument in the technical field of viscosity measurement by a rotary method is met, and the purpose of dynamically adjusting the measuring range of the measuring instrument in the viscosity measuring process is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling fluid viscosity detection equipment, and in particular to a variable-diameter device for measuring viscous liquids. Background Art

[0002] The description in this part only provides background information related to the disclosure of the present invention and does not constitute prior art.

[0003] During the process of underground drilling exploration, formation drilling for oil and gas production, generally a drill pipe is rotated and drilled into the ground. During the drilling process of the drill pipe, the drilling fluid is injected into the wellbore from the drill bit through the internal channel of the drill pipe. While lubricating the drill bit, the drilling fluid can remove the cuttings from the forward path of the drill bit, and the drilling fluid can carry the cuttings back to the ground through the drilling channel. Therefore, for different geological rock formations, it is necessary to monitor the viscosity change of the drilling fluid in real time to achieve the best drilling and cuttings-carrying effect. However, in actual use, the viscosity change range of the drilling fluid is very large. If the specific viscosity characteristics of the actual drilling fluid used need to be obtained, a viscosity measuring device with a large measurement range and high accuracy is required. In the prior art, generally a rotational viscometer is used for measurement. The rotational viscometer 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 of the drilling fluid on the stator surface and the velocity. Due to the characteristics of the drilling fluid itself, during the process of gradually increasing the rotor speed, 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, and the stator cannot accurately measure the actual viscosity of the drilling fluid. Therefore, at this time, it is necessary to reduce the distance between the stator and the rotor, that is, change the measurement range of the rotational viscometer, improve the measurement accuracy of the rotational viscometer, and enable the stator to accurately measure the viscosity of the drilling fluid.

[0004] However, during the actual construction process, to change the measurement range of the rotational viscometer, generally the original stator is taken out from the rotational viscometer, a stator with a suitable size is selected and then installed in the rotational viscometer, and then the original drilling fluid is refilled between the stator and the rotor, and the rotational viscometer is restarted for measurement. The entire process requires the rotational viscometer to be shut down and the stator to be replaced, which takes a long time overall. Moreover, the viscosity of the drilling fluid taken out from the drilling fluid pipeline will change after being placed for too long, resulting in the measured drilling fluid performance not conforming to the actual drilling fluid performance, and the real-time monitoring of the drilling fluid cannot be achieved. Further, frequent replacement of the stator will also cause the drilling fluid to be contaminated and cannot accurately reflect the real liquid parameters.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present invention. Summary of the Invention

[0006] The object of the present invention is to provide a variable-diameter device for measuring viscous liquids, which solves the problem that the stator cannot change its diameter in a rotational viscometer in the technical field of rotational viscosity measurement, and realizes the purpose of dynamically adjusting the measuring range of the viscometer during the viscosity measurement process.

[0007] The above implementation object of the present invention is mainly achieved by the following technical solutions:

[0008] The present invention provides a variable-diameter device for measuring viscous liquids, comprising:

[0009] A variable-diameter stator mechanism having a support skeleton and an elastomer sleeved on the support skeleton, the support skeleton having a connected first adjustment frame and a second adjustment frame;

[0010] An adjustment structure having a connected shaft rod structure and at least one adjustment component, the shaft rod structure being arranged inside the support skeleton, and at least one of the adjustment components being circumferentially slidably connected to the support skeleton;

[0011] Wherein, the second adjustment frame can be circumferentially movably arranged relative to the first adjustment frame through at least one of the adjustment components to change the radial dimension of the support skeleton.

[0012] In a specific embodiment, the support skeleton has an orbital structure, and at least one of the adjustment components is slidably connected to the orbital structure so that the support skeleton is circumferentially rotatably arranged around the shaft rod structure.

[0013] In a specific embodiment, the orbital structure has a butt-jointed first orbit and a second orbit, the first orbit is arranged inside the first adjustment frame, the second orbit is arranged inside the second adjustment frame, a sliding ridge 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 radially expands outwards, at least one of the adjustment components slides from the first orbit to the second orbit through the first orbit.

[0014] In a specific embodiment, the first adjusting frame has a first upper adjusting ring and a first lower adjusting ring, and the second adjusting frame has a second upper adjusting ring and a second lower adjusting ring; the first upper adjusting ring is connected to the second upper adjusting ring, the free end of the second upper adjusting ring is movably connected to the outside of the first upper adjusting ring, the first lower adjusting ring is connected to the second lower adjusting ring, and the free end of the second lower adjusting ring is movably connected to the outside of the first lower adjusting ring; wherein, at least one of the adjusting components is circumferentially slidably connected to the first upper adjusting ring, the first lower adjusting ring, the second upper adjusting ring or the second lower adjusting ring.

[0015] In a specific embodiment, the first adjusting frame has a first upper adjusting ring and a first lower adjusting ring, and the second adjusting frame has a second upper adjusting ring and a second lower adjusting ring; the first upper adjusting ring is connected to the second upper adjusting ring, the free end of the second upper adjusting ring is movably connected to the outside of the first upper adjusting ring, the first lower adjusting ring is connected to the second lower adjusting ring, and the free end of the second lower adjusting ring is movably connected to the outside of the first lower adjusting ring; wherein, the track structures are provided on both the first upper adjusting ring and the second upper adjusting ring, and on both the first lower adjusting ring and the second lower adjusting ring.

[0016] In a specific embodiment, the shaft rod structure has a connecting rod and a moving seat movably sleeved on the connecting rod, and one end of at least one of the adjusting components is hinged to the moving seat.

[0017] In a specific embodiment, the moving 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 adjusting components, at least one of the adjusting components is connected to the first base, and at least one of the adjusting components is connected to the second base.

[0018] In a specific embodiment, the shaft rod structure further includes a secondary connecting rod movably inserted into the connecting rod, the moving 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 adjusting components is connected to the first base, and at least one of the adjusting components is connected to the second base.

[0019] In a specific embodiment, the first adjusting frame and the second adjusting frame are arc-shaped adjusting frames made of an elastic material.

[0020] In a specific embodiment, the adjusting component includes an outer tube and an inner tube telescopically inserted into the outer tube, the outer tube is connected to the shaft rod structure, and the inner tube is connected to the support skeleton.

[0021] In a specific embodiment, the first adjustment frame and the second adjustment frame are arc-shaped plate bodies with a plurality of hollow holes.

[0022] In a specific embodiment, a locking structure is provided between the connecting rod and the moving seat. The locking structure includes an elastic member. One end of the elastic member is connected to the moving seat, and the other end thereof is connected to a clamping block that is clamped onto the connecting rod.

[0023] In a specific embodiment, the variable-diameter device for measuring viscous liquid includes a tachometer capable of measuring the rotational speed of the variable-diameter stator mechanism.

[0024] In a specific embodiment, a roller counter is connected to the end of the adjustment assembly that is in contact with the track structure. The roller counter has a body and a roller rotatably sleeved outside the body. The body is connected to the adjustment assembly, the roller is in sliding contact with the track structure, a counter is provided on the body, and a marking portion corresponding to the counter is provided on the roller.

[0025] In a specific embodiment, a plurality of first framework rods are connected between the first upper adjustment ring and the first lower adjustment ring, and a plurality of second framework rods are connected between the second upper adjustment ring and the second lower adjustment ring.

[0026] In a specific embodiment, both the connecting rod and the sub-connecting rod are lead screws. A first internal thread section is formed on the inner peripheral wall of the first base, and the first internal thread section is threadedly connected to the connecting rod. A second internal thread section is formed on the inner peripheral wall of the second base, and the second internal thread section is threadedly connected to the sub-connecting rod.

[0027] In a specific embodiment, the connecting rod is connected to a first motor through a first reducer, and the sub-connecting rod is connected to a second motor through a second reducer. A first locking pin capable of stopping the connecting rod is provided in the first reducer, and a second locking pin capable of stopping the sub-connecting rod is provided in the reducer.

[0028] In a specific embodiment, the elastic body is a skin. The upper end of the skin is hermetically connected to the moving seat, and the lower end of the skin is hermetically connected to a moving rod passing through the shaft rod structure.

[0029] In a specific embodiment, the moving rod is movably disposed in the shaft rod structure through a retracting and extending mechanism. The retracting and extending 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.

[0030] In a specific embodiment, the thickness of the end portion of the first adjustment frame that is opposite to the second adjustment frame gradually becomes thinner toward the second adjustment frame.

[0031] Compared with the prior art, the technical solution described in the present invention 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, so as to adjust the size of the stator in the rotary viscosity measuring instrument, that is, to adjust the range of the rotary viscosity measuring instrument. When the viscosity of the 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 invention can also be used with a speed measuring device 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 invention can replace the stator without stopping the machine and directly adjust the stator size in the rotary viscosity measuring instrument when measuring the viscosity of the viscous liquid, so as to avoid the viscous liquid being contaminated or the process characteristics being changed due to downtime when replacing stators of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the variable diameter device for measuring viscous liquid of the present invention;

[0033] Figure 2 A structural diagram of a support frame of a variable diameter device for measuring viscous liquids according to the present invention;

[0034] Figure 3 for Figure 2 Cross-section of the middle AA;

[0035] Figure 4 for Figure 2 Cross-section of the middle BB;

[0036] Figure 5 It is another structural diagram of the support frame of the variable diameter device for measuring viscous liquid of the present invention;

[0037] Figure 6 A structural diagram of the adjustment structure of the variable diameter device for measuring viscous liquid of the present invention;

[0038] Figure 7 It is another structural diagram of the adjustment structure of the variable diameter device for measuring viscous liquid of the present invention;

[0039] Figure 8 A structural diagram of a roller counter of a variable diameter device for measuring viscous liquids according to the present invention;

[0040] Figure 9Structural diagram of the locking structure of the variable-diameter device for measuring viscous liquids according to the present invention.

[0041] Explanation of reference numerals in the drawings:

[0042] 1. Variable-diameter stator mechanism; 11. Support skeleton; 111. First adjustment frame; 1111. Sliding convex 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;

[0043] 2. Adjustment structure; 21. Shaft rod structure; 211. Connecting rod; 212. Moving seat; 2121. First base; 2122. Second base; 213. Sub-connecting rod; 214. Moving rod; 22. Adjustment component; 221. Outer tube; 222. Inner tube;

[0044] 3. Locking structure; 31. Elastic member; 32. Block;

[0045] 4. Roller counter; 41. Body; 42. Roller; 43. Counter; 44. Marking part;

[0046] 51. First reducer; 52. First motor; 53. First locking pin;

[0047] 61. Second reducer; 62. Second motor; 63. Second locking pin;

[0048] 7. Retracting and releasing mechanism; 71. Rack; 72. Gear;

[0049] 8. Driving motor;

[0050] 91. First platform; 92. Second platform;

[0051] F. Axial direction of the shaft rod structure;

[0052] H. Axial direction of the connecting rod;

[0053] P. Axial direction of the sub-connecting rod;

[0054] D. Radial direction of the support skeleton. Detailed implementation manner

[0055] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] As Figure 1 and Figure 2 shown, the present invention provides a variable-diameter device for measuring viscous liquids, comprising:

[0059] A variable-diameter stator mechanism 1, having a support skeleton 11 and an elastomer 12 sleeved on the support skeleton 11, and the support skeleton 11 has a connected first adjustment frame 111 and a second adjustment frame 112;

[0060] An adjustment structure 2, having a connected shaft rod structure 21 and at least one adjustment component 22, the shaft rod structure 21 is arranged inside the support skeleton 11, and at least one adjustment component 22 is circumferentially slidably connected to the support skeleton 11;

[0061] Wherein, the second adjustment frame 112 can be circumferentially movably arranged relative to the first adjustment frame 111 through at least one adjustment component 22 to change the radial dimension of the support skeleton 11.

[0062] The variable-diameter device provided by the present invention replaces the stator in the rotational viscometer with a variable-diameter stator mechanism 1. The support skeleton 11 is a framework that props up the variable-diameter stator mechanism 1. The elastomer 12 is sleeved outside 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 framework of the support skeleton 11 to achieve the purpose of adjusting the radial dimension of the variable-diameter stator mechanism 1, and further achieve the purpose of adjusting the measuring range of the rotational viscometer. At the same time, the rotational viscometer with the variable-diameter device can also achieve the purpose of not shutting down and not replacing the stator during the measurement process, bringing the effect of quickly and efficiently measuring the viscosity of viscous liquids.

[0063] Specifically, the first adjustment frame 111 and the second adjustment frame 112 of the variable-diameter stator mechanism 1 are movably connected. The support skeleton 11 is generally in a three-dimensional structure. The elastomer 12 is made of an elastic material, such as a skin. In any state of the support skeleton 11 within the adjustable range of dimensions, the elastomer 12 can be sleeved outside the support skeleton 11 and remain in a tensioned state. In this embodiment, the elastomer 12 has the characteristics of being oil-repellent and water-repellent, avoiding the situation where when the stator is immersed in the viscous liquid to be detected, the viscous liquid forms other connection relationships with the elastomer 12, thereby affecting the measurement results. The shaft rod structure 21 is arranged inside the support skeleton 11. In one embodiment, the shaft rod structure 21 can pass through the support skeleton 11 and be connected to external facilities. In other embodiments, the shaft rod structure 21 can also be only arranged inside the support skeleton 11. In a specific embodiment, a mechanism such as a torsion spring is connected to the variable-diameter stator mechanism 1 to measure the viscosity of the viscous liquid. In another specific embodiment, the viscosity of the viscous liquid is measured by measuring the rotational speed of the variable-diameter stator mechanism 1. There is no specific limitation on the method of measuring the viscosity of the viscous liquid. There is no detailed limitation on the number of adjustment components 22, only limited by maintaining the support shape of the support skeleton 11. In this embodiment, the adjustment component 22 is generally in a rod-shaped structure. In other embodiments, the adjustment component 22 can also be a structure connected between the shaft rod structure 21 and the support skeleton 11 and capable of generating a thrust force on the support skeleton 11 to cause it to deform. There is no specific limitation on the structure of the adjustment component 22.

[0064] In this embodiment, at least one adjusting component 22 is slidably connected to the support skeleton 11 along the circumferential direction of the support skeleton 11. The adjusting component 22 can generate a force in the radial direction D of the support skeleton 11. Specifically, in this embodiment, the second adjusting frame 112 is movably connected to the first adjusting frame 111, that is, the fixed end of the second adjusting frame 112 is fixedly connected to the fixed end of the first adjusting frame 111, and the free end of the second adjusting frame 112 can be movably connected to the first adjusting frame 111 along the circumferential direction of the first adjusting frame 111. In other embodiments, both ends of the second adjusting frame 112 can also be movably connected to the first adjusting frame 111 along the circumferential direction of the first adjusting frame 111, and the connection manner of the first adjusting frame 111 and the second adjusting frame 112 is not specifically limited. In the state where the second adjusting frame 112 and the first adjusting frame 111 are not subjected to the force generated by the adjusting component 22 in the radial direction D of the support skeleton 11, the second adjusting frame 112 and the first adjusting frame 111 are relatively stationary. In this embodiment, in the state where the second adjusting frame 112 and the first adjusting frame 111 are subjected to the force generated by the adjusting component 22 in the radial direction D of the support skeleton 11, the second adjusting frame 112 generates a circumferential movement relative to the first adjusting frame 111 through at least one adjusting component 22, and the radial dimension of the frame formed by the first adjusting frame 111 and the second adjusting frame 112 changes, that is, at least one free end of the first adjusting frame 111 generates a movement along the circumferential direction of the second adjusting frame 112, thereby achieving the purpose of changing the radial dimension of the support skeleton 11. Further, at least one adjusting component 22 is circumferentially slidably connected to the support skeleton 11, avoiding the situation that the adjusting component 22 is distorted during the diameter-changing process of the support skeleton 11, so that the adjusting component 22 can maintain the support connection to the support skeleton 11. In this embodiment, in the state where the second adjusting frame 112 and the first adjusting frame 111 are subjected to the force generated by the adjusting component 22 in the radial direction D of the support skeleton 11, the radial dimension of the frame formed by the first adjusting frame 111 and the second adjusting frame 112 becomes larger or smaller.

[0065] In a specific embodiment, as Figure 1 and Figure 2 shown, the first adjusting frame 111 and the second adjusting frame 112 are arc-shaped adjusting frames made of elastic materials. By using arc-shaped elastic materials, the first adjusting frame 111 and the second adjusting frame 112 have the function of restoring to the initial state when they are cooperatively connected, improving the diameter-changing ability of the variable-diameter stator mechanism 1. At the same time, adopting an arc-shaped structure can enable the first adjusting frame 111 and the second adjusting frame 112 to cooperate to form a nearly circular stator shape, and the diameter-changing manner is smoother, avoiding jamming.

[0066] Specifically, the frame formed by the cooperative connection between the first adjustment frame 111 and the second adjustment frame 112 in this embodiment has a tendency to shrink inward to a minimum size state; in other embodiments, the frame formed by the cooperative connection between the first adjustment frame 111 and the second adjustment frame 112 may also have a tendency to expand outward to a maximum size state, and no specific limitation is made thereto.

[0067] In a specific embodiment, the first adjustment frame 111 and the second adjustment frame 112 are arc-shaped plates with a plurality of hollow holes; through the setting of the arc-shaped plates 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 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 generate rotation or revolution; it is also easier to measure the rotational torque of the variable-diameter stator mechanism 1 during the process of measuring viscosity by torque; or it is also easier to measure the rotational speed of the variable-diameter stator mechanism 1 during the process of measuring viscosity by rotational speed. In this embodiment, at least one adjustment component 22 is connected between the shaft rod structure 21 and the arc-shaped plate, and the adjustment component 22 generates a force along the radial direction D of the support skeleton 11, and the arc-shaped plate of the second adjustment frame 112 generates a movement along the circumferential direction of the arc-shaped plate of the first adjustment frame 111 through the adjustment component 22.

[0068] In a specific implementation manner, such as Figures 2 to 4As shown, the support skeleton 11 has an orbital structure 113, and at least one adjustment component 22 is in sliding connection with the orbital structure 113 to enable the support skeleton 11 to be circumferentially rotated around the shaft rod structure 21. By providing the orbital structure 113 on the support skeleton 11, the variable-diameter stator mechanism 1 can achieve the purpose of measuring the viscosity of a viscous liquid. Specifically, in this embodiment, the support skeleton 11 is generally a cylindrical barrel structure, the orbital structure 113 is provided along the circumference of the support skeleton 11, and the shaft rod structure 21 is provided on the axis of the cylindrical support skeleton 11; in other embodiments, the support skeleton 11 can also be of other structures, which is not limited herein. In this embodiment, the orbital structure 113 is provided inside the support skeleton 11, that is, on the side of the support skeleton 11 facing the shaft rod structure 21. In other embodiments, the orbital structure 113 can also be provided on the top side or the bottom side of the support skeleton 11, which is not specifically limited; one end of at least one adjustment component 22 is slidably connected to the orbital structure 113, that is, during the process of measuring the viscosity of the viscous liquid, the support skeleton 11 can slide relative to one end of the adjustment component 22. In this embodiment, the support skeleton 11 is composed of a first adjustment frame 111 and a second adjustment frame 112. The orbital structure 113 is provided inside the first adjustment frame 111 and 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, and the outer side of the free end of the first adjustment frame 111 is slidably butted against the inside 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 butted against the inside of the first adjustment frame 111, and the positional relationship between the first adjustment frame 111 and the second adjustment frame 112 is not specifically limited.

[0069] In a specific embodiment, as Figures 2 to 5 shown, the orbital structure 113 has a first orbit 1131 and a second orbit 1132 that are butted against each other. The first orbit 1131 is provided inside the first adjustment frame 111, and the second orbit 1132 is provided inside the second adjustment frame 112. A sliding ridge 1111 capable of slidingly butting against the second orbit 1132 is formed on the outer side of the first adjustment frame 111. In a state where the support skeleton 11 radially expands outwards, at least one adjustment component 22 slides from the first orbit 1131 to the second orbit 1132.

[0070] A variable-diameter device for measuring viscous liquids provided by the present invention can achieve the purpose of variable diameter of the entire track structure 113 by setting the first track 1131 and the second track 1132, that is, the track structure 113 can be variable in diameter in coordination with the change in the radial dimension of the support skeleton 11. At the same time, the adjustment assembly 22 can slide from the first track 1131 to the second track 1132, which also avoids the risk that the angle at which the adjustment assembly 22 is connected to the support skeleton 11 is limited and then broken during the process of the variable diameter of the radial dimension of the support skeleton 11.

[0071] Specifically, in this embodiment, the cross-sections of the first track 1131 and the second track 1132 are both approximately trapezoidal. In other embodiments, the cross-sections of the first track 1131 and the second track 1132 can also be crescent-shaped or rectangular, and no specific limitation is made thereto; in this embodiment, a sliding convex rib 1111 is formed on the outer side of the first adjusting frame 111, that is, the overall shape of the first adjusting frame 111 is convex on the outer side, and the outer side of the first adjusting frame 111 is slidably engaged with the second track 1132 on the inner side of the second adjusting frame 112; in this embodiment, the overall shape of the first adjusting frame 111 is trapezoidal, and the cross-section of the second track 1132 on the inner side of the second adjusting frame 112 is trapezoidal. In other embodiments, no specific limitation is made to the overall shape of the first adjusting frame 111 and the shape of the cross-section of the second track 1132, as long as they can be slidably engaged; in other embodiments, a separate sliding convex rib 1111 can be provided on the outer side of the first adjusting frame 111, and the sliding convex rib 1111 is slidably docked with the second track 1132, and no specific limitation is made to the shape of the sliding convex rib 1111.

[0072] In this embodiment, when the support skeleton 11 is in the state of the smallest radial dimension, the adjustment assembly 22 is slidably connected to the first track 1131. During the process of the variable diameter of the support skeleton 11 from the smallest radial dimension to the largest radial dimension, the adjustment assembly 22 provides a force outward along the radial direction D of the support skeleton 11 to the support skeleton 11. The second adjusting frame 112 moves relative to the first adjusting frame 111 in the circumferential direction of the first adjusting frame 111. The first adjusting frame 111 moves along the second track 1132 through the sliding convex rib 1111. The second track 1132 on the inner side of the second adjusting frame 112 and the first track 1131 jointly form a track for one end of the adjustment assembly 22 to be slidably connected, and one end of at least one adjustment assembly 22 slides from the first track 1131 into the second track 1132; in this embodiment, the adjustment assembly 22 is connected between the shaft rod structure 21 and the inner side of the support skeleton 11.

[0073] In a specific embodiment, such as Figures 2 to 5As shown, the thickness of the end portion where the first adjustment frame 111 and the second adjustment frame 112 are connected gradually becomes thinner toward the second adjustment frame 112. By designing the thickness of one end portion of the first adjustment frame 111 to be thinner, it is beneficial to achieve a smooth transition between the first track 1131 and the second track 1132 at the connection, avoiding vibration caused by the step when the adjustment component 22 slides from the first track 1131 to the second track 1132, affecting the viscosity measurement result, and avoiding the step at the connection between the first track 1131 and the second track 1132, which makes it impossible to use the rotational viscosity measurement method. 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, that is, the thickness of the movable end of the first adjustment frame 111 gradually becomes thinner toward the direction of the second adjustment frame 112.

[0074] In a specific embodiment, Figures 1 to 4 As shown, 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, 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.

[0075] The present invention 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 framework of the support frame 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 with the first upper adjustment ring 1112 and the second upper adjustment ring 1121. The 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, it is convenient to adjust the height of the support skeleton 11, that is, to increase the force area of ​​the variable diameter stator mechanism 1, so as to reduce 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.

[0076] Specifically, the first upper adjustment ring 1112 and the second upper adjustment ring 1121 are connected to form a circular ring frame structure, and the first lower adjustment ring 1113 and the second lower adjustment ring 1122 are connected to also generally form a circular ring frame structure; the first upper adjustment ring 1112, the second upper adjustment ring 1121, as well as the first lower adjustment ring 1113 and the second lower adjustment ring 1122 together form a cylindrical support skeleton 11; the fixed end of the first upper adjustment ring 1112 is fixedly connected to the fixed end of the second upper adjustment ring 1121, the mobile end of the first upper adjustment ring 1112 is docked with the second upper adjustment ring 1121, and the free end of the second upper adjustment ring 1121 is movably arranged along the outer side of the first upper adjustment ring 1112; the fixed end of the first lower adjustment ring 1113 is fixedly connected to the fixed end of the second lower adjustment ring 1122, the mobile end of the first lower adjustment ring 1113 is docked with the second lower adjustment ring 1122, and the free end of the second lower adjustment ring 1122 is movably arranged along the outer side of the first lower adjustment ring 1113; the track structure 113 is arranged on the first upper adjustment ring 1112 and the second upper adjustment ring 1121, as well as on 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 on the first lower adjustment ring 1113 and the second lower adjustment ring 1122; the circular ring frame structure formed by the first lower adjustment ring 1113 and the second lower adjustment ring 1122 is circumferentially rotatably arranged around the shaft rod structure 21, and the circular ring frame structure formed by the first upper adjustment ring 1112 and the second upper adjustment ring 1121 is also circumferentially rotatably arranged around the shaft rod structure 21. During the process of measuring viscosity by rotation speed, the angular rotation speed of the circular ring frame structure formed by the first lower adjustment ring 1113 and the second lower adjustment ring 1122 is the same as that of the circular ring frame structure formed by the first upper adjustment ring 1112 and the second upper adjustment ring 1121. In other embodiments, the diameter size of the circular ring frame structure formed by the first lower adjustment ring 1113 and the second lower adjustment ring 1122 can also be different from that of the circular ring frame structure formed by the first upper adjustment ring 1112 and the second upper adjustment ring 1121 to solve the problem that viscous liquid will generate rotational eddy currents at high rotation speeds during the process of measuring rotational viscosity, thereby resulting in inaccurate viscosity measurement; in other embodiments, the distance between the circular ring frame structure formed by the first lower adjustment ring 1113 and the second lower adjustment ring 1122 and the circular ring frame structure formed by the first upper adjustment ring 1112 and the second upper adjustment ring 1121 is variable to increase the force-bearing area of the variable-diameter stator mechanism 1 during the process of measuring rotational viscosity.

[0077] In a specific embodiment, such as Figures 1 to 4As shown, the first adjusting frame 111 has a first upper adjusting ring 1112 and a first lower adjusting ring 1113, and the second adjusting frame 112 has a second upper adjusting ring 1121 and a second lower adjusting ring 1122; the first upper adjusting ring 1112 is connected to the second upper adjusting ring 1121, and the free end of the second upper adjusting ring 1121 is movably connected to the outside of the first upper adjusting ring 1112. The first lower adjusting ring 1113 is connected to the second lower adjusting ring 1122, and the free end of the second lower adjusting ring 1122 is movably connected to the outside of the first lower adjusting ring 1113; wherein, at least one adjusting component 22 is circumferentially slidably connected to the first upper adjusting ring 1112, the first lower adjusting ring 1113, the second upper adjusting ring 1121 or the second lower adjusting ring 1122.

[0078] For the support skeleton 11 provided by the present invention, by providing the first upper adjusting ring 1112 and the second upper adjusting ring 1121, and the first lower adjusting ring 1113 and the second lower adjusting ring 1122, a generally cylindrical frame of the support skeleton 11 can be formed. At least one adjusting component 22 is circumferentially slidably connected to the first upper adjusting ring 1112 and the second upper adjusting ring 1121, and the first lower adjusting ring 1113 and the second lower adjusting ring 1122, avoiding the problem that the adjusting component 22 is twisted and deformed due to fixed connection during the process of changing the diameter of the first upper adjusting ring 1112 and the second upper adjusting ring 1121, and / or the first lower adjusting ring 1113 and the second lower adjusting ring 1122, so that the adjusting component 22 can maintain a stable support connection with the first upper adjusting ring 1112 and the second upper adjusting ring 1121, and / or the first lower adjusting ring 1113 and the second lower adjusting ring 1122.

[0079] Specifically, in this embodiment, the frictional force between at least one adjusting component 22 and the first upper adjusting ring 1112, the first lower adjusting ring 1113, the second upper adjusting ring 1121 or the second lower adjusting ring 1122 during sliding connection is greater than the shearing force of the viscous liquid driving the variable-diameter stator mechanism 1; or in other embodiments, a locking member is provided between at least one adjusting component 22 and the first upper adjusting ring 1112, the first lower adjusting ring 1113, the second upper adjusting ring 1121 or the second lower adjusting ring 1122 to fix the connection between at least one adjusting component 22 and the first upper adjusting ring 1112, the first lower adjusting ring 1113, the second upper adjusting ring 1121 or the second lower adjusting ring 1122 during torque measurement of viscosity. The device of this embodiment is applicable to the process of measuring the viscosity of a viscous liquid by using torque or rotation angle.

[0080] In a specific embodiment, such as Figure 1As shown, a 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, rotational speed data can be quickly obtained during the experiment of measuring the viscosity of viscous liquids using the stator rotational speed, thereby achieving the rapid acquisition of the viscosity of viscous liquids. Specifically, the tachometer is arranged within the support skeleton 11. In other embodiments, the tachometer can also be arranged on the shaft rod structure 21, and no specific limitation is imposed thereon; during the viscosity measurement process of this embodiment, the variable-diameter stator mechanism 1 rotates as a whole, and the tachometer measures the angular rotational speed of the variable-diameter stator mechanism 1; during the viscosity measurement process of other embodiments, the support skeleton 11 rotates relative to the shaft rod structure 21, and the tachometer measures the angular rotational speed of the support skeleton 11; in other embodiments, no specific limitation is imposed on the measurement method and measurement object of the tachometer; in this embodiment, the tachometer is a laser tachometer, and in other embodiments, other instruments for measuring rotational speed can also be adopted. During the measurement process of measuring viscosity by rotational speed, no specific limitation is imposed on the calculation method for measuring viscosity. In this embodiment, the driving rotor is sleeved outside the variable-diameter stator mechanism 1, and the viscous liquid to be detected is filled between the driving rotor and the variable-diameter stator mechanism 1; the experimental steps of this embodiment are as follows:

[0081] S1: Adjust the radial dimension of the support skeleton 11 according to the initial viscosity of the viscous liquid to be detected and the inner diameter of the driving rotor;

[0082] S2: Set the rotational speed of the driving rotor and start the driving rotor. The driving rotor drives the viscous liquid to be detected and the variable-diameter stator mechanism 1 to rotate. After the rotational states of all components are stable, obtain the rotational speed of the variable-diameter stator mechanism 1;

[0083] 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 1, the moment of 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.

[0084] Specifically, in other embodiments, no specific limitation is imposed on the calculation formula in the above step S3. In this embodiment, the calculation formula in the above step S3 is as follows:

[0085]

[0086] where ω2 is the rotational speed of the driving rotor, m / s; ω1 is the rotational 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 skeleton 11, m; L is the axial dimension of the support skeleton 11, m; η is the viscosity of the viscous liquid, N.s / m2 。

[0087] In a specific embodiment, as Figure 1 、 Figure 2 、 Figures 6 to 8 shown, at the end where the adjustment component 22 is connected to the track structure 113, a roller counter 4 is connected. The roller counter 4 has a body 41 and a roller 42 rotatably sleeved outside the body 41. The body 41 is connected to the adjustment component 22, the roller 42 is in sliding contact with the track structure 113, a counter 43 is provided on the body 41, and a marking portion 44 corresponding to the counter 43 is provided on the roller 42.

[0088] The roller counter 4 provided by the present invention 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 skeleton 11 around the adjustment component 22 during the viscosity measurement. During the viscosity measurement, through the setting of the counter 43, the linear rotation speed of the support skeleton 11 can be quickly obtained. The radius of the variable-diameter stator mechanism 1 can be obtained through the distance between the roller counter 4 and the shaft rod, and then the rotation speed of the support skeleton 11 can be obtained, that is, the rotation speed of the variable-diameter stator mechanism 1 in the above embodiment.

[0089] Specifically, the roller counter 4 includes a cylindrical body 41 and a roller 42 sleeved outside the body 41 along the circular side surface of the body 41. The roller 42 is generally a hollow cylinder. 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. A counter 43 is provided on the outer side surface of the body 41. The outer side surface of the roller 42 is in sliding contact with the track structure 113, and a marking portion 44 is provided on the inner side surface of the roller 42; during the rotation of the roller 42 around the body 41, when the roller 42 rotates one circle, the marking portion 44 contacts the counter 43 once, and 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 skeleton 11, the rotation speed of the support skeleton 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 specific limitation on the method for obtaining the rotation speed of the support skeleton 11. The specific calculation formula for the rotation speed of the support skeleton 11 in this embodiment is as follows:

[0090]

[0091] where ω is the rotation speed of the support skeleton 11, m / s; n is the number of circles rotated by 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 skeleton 11, m.

[0092] In a specific embodiment, as Figure 1As shown, a plurality of first framework rods 13 are connected between the first upper adjustment ring 1112 and the first lower adjustment ring 1113, and a plurality of second framework rods 14 are connected between the second upper adjustment ring 1121 and the second lower adjustment ring 1122.

[0093] By providing the support framework 11 with the first framework rods 13 and the second framework rods 14, the present invention 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. At the same time, in a specific embodiment, by providing the first framework rods 13 and the second framework rods 14, when the second upper adjustment ring 1121 moves circumferentially relative to the first upper adjustment ring 1112, the first lower adjustment ring 1113 can be driven to move circumferentially relative to the second lower adjustment ring 1122.

[0094] Specifically, a plurality of first framework 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 framework rods 13 are arranged at intervals along the circumferential direction of the support framework 11; a plurality of second framework 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 framework rods 14 are arranged at intervals along the circumferential direction of the support framework 11; in other embodiments, the first framework rods 13 and the second framework rods 14 can also be telescopic rods, which is convenient for adjusting 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; in other embodiments, a plurality of first framework rods 13 can also be connected between the first upper adjustment ring 1112 and the first lower adjustment ring 1113 along a direction at an angle to the axial direction F of the shaft structure 21, and a plurality of second framework rods 14 can also be connected between the second upper adjustment ring 1121 and the second lower adjustment ring 1122 along a direction at an angle to the axial direction F of the shaft structure 21. There is no specific limitation on the connection direction of the first framework rods 13 and the second framework rods 14.

[0095] In a specific embodiment, as Figure 1 、 Figure 6 and Figure 7 shown, the shaft structure 21 has a connecting rod 211 and a moving seat 212 movably sleeved on the connecting rod 211, and one end of at least one adjustment assembly 22 is hinged to the moving seat 212.

[0096] The movable seat 212 and the connecting rod 211 provided by the present invention enable one end of the adjusting assembly 22 to move on the connecting rod 211. Meanwhile, by changing the position of the movable seat 212 on the connecting rod 211, the angle between the adjusting assembly 22 and the connecting rod 211 can be changed, thereby realizing the variable-diameter support of the support skeleton 11 by the adjusting assembly 22.

[0097] Specifically, one end of the adjusting assembly 22 is hinged to the movable seat 212. In this embodiment, the angle between the adjusting 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 adjusting assembly 22 and the connecting rod 211 becomes smaller, and the radial dimension of the support skeleton 11 becomes smaller. When the movable seat 212 moves downward along the axial direction H of the connecting rod 211, the angle between the adjusting assembly 22 and the connecting rod 211 becomes larger, and the radial dimension of the support skeleton 11 becomes larger. In other embodiments, no specific limitation is imposed on the relationship between the moving direction of the movable seat 212 and the change in the angle between the adjusting assembly 22 and the axial direction H of the connecting rod 211. In this embodiment, the other end of the adjusting assembly 22 is connected to the support skeleton 11. In other embodiments, the other end of the adjusting assembly 22 can also be connected to the roller counter 4, and no specific limitation is imposed thereon. In other embodiments, when the movable seat 212 moves downward along the axial direction H of the connecting rod 211, the angle between the adjusting assembly 22 and the connecting rod 211 becomes smaller, and the radial dimension of the support skeleton 11 becomes smaller. No specific limitation is imposed on the specific position of the movable seat 212 on the connecting rod 211.

[0098] In a specific embodiment, as Figure 9 shown, 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 the elastic member 31 is connected to the movable seat 212, and the other end thereof is connected to a clamping block 32 that is inserted into the connecting rod 211. Through the locking structure 3, the movable seat 212 can be fixed 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, resulting in a change in the radial dimension of the support skeleton 11. At the same time, a fixed structural relationship is formed between the adjusting assembly 22 and the connecting rod 211 in the circumferential direction of the connecting rod 211 to prevent the adjusting assembly 22 from rotating circumferentially around the connecting rod 211, thereby affecting the viscosity measurement process.

[0099] Specifically, in this embodiment, the locking structure 3 is disposed inside the moving seat 212. In other embodiments, the locking structure 3 can also be disposed outside the moving seat 212, and no specific limitation is imposed thereon. The elastic member 31 of the locking structure 3 is compressively connected between the moving seat 212 and one end of the clamping block 32. The other end of the clamping block 32 is snap-fitted with 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, causing the clamping block 32 to disengage 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, causing the clamping block 32 to snap into the connecting rod 211, thereby realizing the locking relationship between the moving seat 212 and the connecting rod 211. In one embodiment, a pull rod mechanism can be used to pull the clamping block 32 to compress and release the elastic member 31. In another embodiment, an electromagnetic relay and a magnetic clamping block 32 can also be used. When the electromagnetic relay is energized, the clamping block 32 moves towards the electromagnetic relay and compresses the elastic member 31, causing the clamping block 32 to disengage 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 electromagnetic relay is de-energized, the elastic member 31 pushes the clamping block 32 to snap into the connecting rod 211, thereby realizing the locking relationship of the moving seat 212 on the connecting rod 211. In other embodiments, no specific limitation is imposed on the manner of compressing and releasing the elastic member 31.

[0100] In a specific embodiment, as Figure 1 shown, the moving seat 212 includes a first base 2121 and a second base 2122. The first base 2121 and the second base 2122 are movably connected to the connecting rod 211 at intervals. There are multiple adjusting assemblies 22. At least one adjusting assembly 22 is connected to the first base 2121, and at least one adjusting assembly 22 is connected to the second base 2122.

[0101] By providing the first base 2121 and the second base 2122, the radial dimension of the support frame 11 can be adjusted simultaneously, facilitating the rapid and convenient adjustment of the radial dimension of the support frame 11. At the same time, when the first base 2121 and the second base 2122 are respectively connected to different positions of the support frame 11, the first base 2121 or the second base 2122 can independently adjust the radial dimension of the corresponding position of the support frame 11. For example, the support frame 11 can be adjusted from a cylindrical shape to a frustum shape, which is beneficial to avoiding the phenomenon of vortex generation of the viscous liquid to be detected due to the high rotational speed of the driving stator during the measurement of rotational speed viscosity by the variable-diameter stator mechanism 1, and is beneficial to increasing the effective rotational speed measurement range of the rotational speed viscometer.

[0102] Specifically, in this embodiment, 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. In a specific embodiment, 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. Among them, the first base 2121 independently controls the radial dimension of the circular ring frame structure composed of the first upper adjustment ring 1112 and the second upper adjustment ring 1121 through at least one adjustment component 22, and the second base 2122 independently controls the radial dimension of the circular ring frame structure composed of the first lower adjustment ring 1113 and the second lower adjustment ring 1122 through at least one adjustment component 22; in another specific implementation manner, 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, the specific connection relationship between the first base 2121, the second base 2122 and the support frame 11 is not limited.

[0103] In a specific implementation manner, as Figure 1 shown, the shaft rod structure 21 further includes a secondary connecting rod 213 movably inserted into the connecting rod 211. The moving seat 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.

[0104] The variable-diameter device for measuring viscous liquid provided by the present invention can adjust the axial dimension of the support frame 11 by adopting the method of sleeving the inner and outer connecting rods 211 and the secondary connecting rod 213, which is beneficial to increasing the stress area of the variable-diameter stator mechanism 1, reducing the starting rotation condition of the variable-diameter stator structure, and making the viscosity measurement range of the variable-diameter device larger.

[0105] Specifically, the secondary connecting rod 213 is inserted into the connecting rod 211, and one end of the secondary connecting rod 213 extends out of 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 that extends out of the connecting rod 211. In this embodiment, the first base 2121 is connected to the support frame 11 through at least one adjustment assembly 22, and the second base 2122 is connected to the support frame 11 through at least one adjustment assembly 22. In a specific embodiment, 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 assembly 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 assembly 22; in another specific implementation, the first base 2121 is connected to the first adjustment frame 111 through at least one adjustment assembly 22, and the second base 2122 is connected to the second adjustment frame 112 through at least one adjustment assembly 22; in other embodiments, there is no limitation on the specific connection manner between the first base 2121, the second base 2122, and the support frame 11.

[0106] In a specific implementation, as Figure 1 shown, both the connecting rod 211 and the secondary connecting rod 213 are lead screws. The inner peripheral wall of the first base 2121 forms a first internal thread section, and the first internal thread section is threadedly connected to the connecting rod 211. The inner peripheral wall of the second base 2122 forms a second internal thread section, and the second internal thread section is threadedly connected to the secondary connecting rod 213.

[0107] The variable diameter device provided by the present invention realizes variable diameter by setting both the connecting rod 211 and the secondary connecting rod 213 as lead screws, that is, it can move the first base 2121 or the second base 2122 on the lead screw by rotating the lead screw, thereby changing the angle between the adjustment assembly 22 and the axial direction H of the connecting rod 211, and achieving the purpose of adjusting the support frame 11.

[0108] In this embodiment, the first base 2121 is threadedly connected to the connecting rod 211 through the first internal thread section, and the second base 2122 is threadedly connected to the auxiliary connecting rod 213 through the second internal thread section. In this embodiment, the frictional force of the screw connection between the first base 2121 and the connecting rod 211 is less than the frictional force between the adjusting assembly 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 included angle between the adjusting assembly 22 and the axial direction H of the connecting rod 211 changes, and the adjusting assembly 22 drives the radial dimension of the support frame 11 to change. At the same time, the frictional force of the screw connection between the second base 2122 and the auxiliary connecting rod 213 is less than the frictional force between the adjusting assembly 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 included angle between the adjusting assembly 22 and the axial direction P of the auxiliary connecting rod 213 changes, and the adjusting assembly 22 drives the radial dimension of the support frame 11 to change.

[0109] During the process of measuring viscosity by 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. The support frame 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 component that rotates around the circumferential direction of the connecting rod 211, the adjusting assembly 22 is connected to the rotating component of the first base 2121, the second base 2122 also has a rotating component that rotates around the circumferential direction of the connecting rod 211, the adjusting assembly 22 is connected to the rotating component of the second base 2122, and the support frame 11 and the adjusting assembly 22 jointly rotate around the circumferential direction of the shaft rod structure 21. There is no specific limitation on the method of making the support frame 11 rotate around the circumferential direction of the connecting rod 211.

[0110] In a specific embodiment, as Figure 1 shown, the connecting rod 211 is connected to the first motor 52 through the first reducer 51, the auxiliary connecting rod 213 is connected to the second motor 62 through the second reducer 61. A first locking pin 53 capable of stopping the connecting rod 211 is provided in the first reducer 51, and a second locking pin 63 capable of stopping the auxiliary connecting rod 213 is provided in the reducer.

[0111] The variable-diameter device provided by the present invention can quickly control the rotation of screw structures such as the connecting rod 211 by setting a motor and a reducer, so as to control the movement of the moving seat 212 in the axial direction H of the connecting rod 211, and further achieve the purpose of changing the radial dimension of the support frame 11 by electric control. At the same time, the locking pin located in the reducer can achieve the purpose of locking the rotation of the connecting rod 211 itself, avoiding the risk that the rotation of the connecting rod 211 causes the measurement result to fail during the process of measuring the viscosity of viscous liquid by rotational speed.

[0112] Specifically, in this embodiment, 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 relative moving distance between the connecting rod 211 and the secondary connecting rod 213. The first motor 52 is drivingly connected to the first reducer 51, and the first reducer 51 is drivingly connected to the connecting rod 211, that is, the first motor 52 is drivingly connected to the connecting rod 211 through the first reducer 51. The second motor 62 is drivingly connected to the second reducer 61, and the second reducer 61 is drivingly connected to the secondary connecting rod 213, that is, the second motor 62 is drivingly connected to the secondary connecting rod 213 through the second reducer 61. In this embodiment, according to the pitch of the connecting rod 211, the pitch of the secondary connecting rod 213, the length of the adjusting assembly 22, and the included angle between the adjusting assembly 22 and the axial direction H of the connecting rod 211, the radial diameter of the support frame 11 can be obtained, that is, by controlling the number of rotation turns of the first motor 52 and the number of rotation turns of the second motor 62, precise diameter variation can be achieved. The calculation method in this embodiment is as follows:

[0113]

[0114]

[0115] Wherein, R i1 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 adjusting ring 1112 and the second upper adjusting ring 1121 corresponding to the first base 2121, m; R i2 is the radial radius of the support frame 11 corresponding to the second base 2122 or the radial radius of the frame composed of the first lower adjusting ring 1113 and the second lower adjusting ring 1122 corresponding to the second base 2122, m; n1 is the number of rotation turns of the first motor 52, n2 is the number of rotation turns 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 adjusting assembly 22 (that is, when the adjusting assembly 22 is perpendicular to the connecting rod 211, the angle α1 = 0°, and when the adjusting assembly 22 is parallel to the connecting rod 211, the angle α1 = 90°), °; α2 is the complementary angle between the secondary connecting rod 213 and the adjusting assembly 22 (that is, when the adjusting assembly 22 is perpendicular to the secondary connecting rod 213, the angle α2 = 0°, and when the adjusting assembly 22 is parallel to the secondary connecting rod 213, the angle α2 = 90°), °.

[0116] In a specific embodiment, such as Figure 1As shown, the elastomer 12 is the skin 121. The upper end of the skin 121 is sealingly connected to the moving seat 212, and the lower end of the skin 121 is sealingly connected to the moving rod 214 passing through the shaft rod structure 21. By providing the skin 121, the skin 121 can be sealingly sleeved outside the support skeleton 11 to simulate the outer shell of the stator. During the viscosity measurement process, the viscous liquid drives the variable-diameter stator mechanism 1 to rotate or spin by contacting the skin 121.

[0117] Specifically, the upper end of the skin 121 is sealingly connected to the rotating structure of the moving seat 212, enabling 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, enabling the skin 121 to rotate circumferentially around the connecting rod 211. There is no specific limitation on the connection method of the upper end of the skin 121. The moving rod 214 is arranged in the shaft rod structure 21, that is, in this embodiment, the moving rod 214 is arranged in the sub-connecting rod 213. In other embodiments, the moving rod 214 can also be arranged only in the connecting rod 211, and there is no specific limitation on this; in this embodiment, both ends of the skin 121 are sealingly connected to avoid leakage of the viscous liquid; the material of the skin 121 in this embodiment is a material with certain elasticity, flexibility, and oil and water repellency, that is, rubber (styrene-butadiene rubber). In other embodiments, rubber polymers (silicone rubber), elastic fabrics coated with waterproof coatings, etc. can also be used, and there is no specific limitation on this.

[0118] In a specific embodiment, as Figure 1 shown, the moving rod 214 is movably arranged in the shaft rod structure 21 through the retracting and extending mechanism 7. The retracting and extending 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 a driving motor 8. Through the retracting and extending mechanism 7, the skin 121 can be relaxed or tightened to prevent the skin 121 from being too loose after the support skeleton 11 changes its diameter, which may cause inaccurate viscosity measurement results. Specifically, in this embodiment, the driving motor 8 is arranged on the first platform 91, the gear 72 is arranged at the output end of the driving motor 8, a rack 71 is provided at the end of the moving rod 214 passing through the connecting rod 211, the rack 71 at one end of the moving rod 214 is meshed with the gear 72 of the retracting and extending mechanism 7, and the moving rod 214 is movably arranged in the connecting rod 211. The lower end of the moving rod 214 is sealingly connected to the lower end of the skin 121. In the state where the skin 121 is too loose, the driving motor 8 rotates, and then drives the moving rod 214 to move upward along the axial direction H of the connecting rod 211 through the retracting and extending mechanism 7 to achieve the tightening setting.

[0119] In a specific embodiment, as Figure 1 and Figure 6As shown in the figure, the adjustment component 22 includes an outer tube 221 and an inner tube 222 that is telescopically disposed within the outer tube 221. The outer tube 221 is connected to the shaft rod structure 21, and the inner tube 222 is connected to the support skeleton 11. By setting the adjustment component 22 as a telescopic rod-shaped structure, it is convenient for the adjustment component 22 to quickly adjust the radial dimension of the support skeleton 11. Specifically, in this embodiment, the outer tube 221 is hinged to the moving seat 212, and the inner tube 222 is circumferentially slidably connected to the support skeleton 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, and no specific limitation is made thereto.

[0120] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable-diameter device for measuring viscous liquids, characterized in that, Comprising: A variable-diameter stator mechanism having a support skeleton and an elastomer sleeved on the support skeleton, the support skeleton having a connected first adjustment frame and a second adjustment frame; An adjustment structure having a connected shaft rod structure and at least one adjustment component, the shaft rod structure being arranged within the support skeleton, and at least one of the adjustment components 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 components to change the radial dimension of the support skeleton.

2. The variable-diameter device for measuring viscous liquid according to claim 1, wherein, The support skeleton has an orbital structure, and at least one of the adjustment components is in sliding contact with the orbital structure so that the support skeleton is circumferentially rotatably arranged around the shaft rod structure.

3. The variable-diameter device for measuring viscous liquid according to claim 2, wherein, The orbital structure has a butt-jointed first orbit and a second orbit, the first orbit being arranged inside the first adjustment frame, the second orbit being arranged inside the second adjustment frame, a sliding ridge capable of slidingly docking with the second orbit being formed on the outside of the first adjustment frame, and in a state where the support skeleton radially expands outwards, at least one of the adjustment components slides from the first orbit to the second orbit.

4. The variable-diameter device for measuring viscous liquid according to claim 1, characterized in that, 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 components 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.

5. The variable-diameter device for measuring viscous liquids according to claim 2 or 3, characterized in that, 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.

6. The variable diameter device for measuring viscous liquid according to claim 1 or 2, characterized in that, The shaft rod structure has a connecting rod and a moving seat movably sleeved on the connecting rod, and one end of at least one of the adjustment components is hinged to the moving seat.

7. The variable diameter device for measuring viscous liquid according to claim 6, characterized in that, The moving seat includes a first base and a second base, the first base and the second base are spaced apart and movably connected to the connecting rod, there are multiple adjustment components, 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.

8. The variable diameter device for measuring viscous liquid according to claim 6, characterized in that, 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.

9. The variable-diameter device for measuring viscous liquid according to claim 1, wherein The first adjustment frame and the second adjustment frame are arc-shaped adjustment frames made of elastic material.

10. The variable diameter device for measuring viscous liquid according to claim 1, characterized in that, 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.

11. The variable-diameter device for measuring viscous liquid according to claim 1, wherein, The first adjustment frame and the second adjustment frame are arc-shaped plates with a plurality of hollow holes.

12. The variable-diameter device for measuring viscous liquid according to claim 6, 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.

13. The variable-diameter device for measuring viscous liquid according to claim 1, wherein, The variable diameter device for measuring viscous liquid comprises a tachometer capable of measuring the rotation speed of the variable diameter stator mechanism.

14. The variable-diameter device for measuring viscous liquid according to claim 2 or 3, characterized in that, A roller counter is connected to the end of the adjustment component that is connected to the track structure. The roller counter has a main body and a roller rotatably mounted outside the main body. The main body is connected to the adjustment component, and the roller is in sliding contact with the track structure. A counter is provided on the main body, and a marking portion corresponding to the counter is provided on the roller.

15. The variable diameter device for measuring viscous liquid according to claim 5, characterized in that, 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.

16. The variable-diameter device for measuring viscous liquid according to claim 8, wherein, The connecting rod and the auxiliary connecting rod are both threaded rods, 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, 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.

17. The variable-diameter device for measuring viscous liquids according to claim 16, characterized in that, 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.

18. The variable-diameter device for measuring viscous liquid according to claim 6, 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.

19. The variable-diameter device for measuring viscous liquids according to claim 18, characterized in that, 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.

20. The variable-diameter device for measuring viscous liquid according to claim 3, characterized in that, 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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