CN217981156U - Constant temperature detection device for continuously measuring shear stress - Google Patents

Abstract

The utility model discloses a measure shear stress's constant temperature detection device in succession, including the casing, be provided with the export that is used for the entry of pump income drilling fluid and pumps the drilling fluid relatively on the casing, the casing internal fixation has stator inner tube and the coaxial rotor urceolus that is located stator inner tube periphery, and entry linkage accuse temperature subassembly, accuse temperature subassembly include feed liquor pipe and temperature sensor, and feed liquor pipe surface has a plurality of arris groove, and the fixed cover in arris inslot interval is equipped with cooling component and intensification subassembly, the fixed installation controller of housing face, accuse temperature subassembly and controller electric connection. This constant temperature detection device is through setting up temperature sensor and continuously carrying out the temperature measurement to the drilling fluid in the inlet channel of flowing through to feed back to the controller in real time, controller control cooling subassembly or the subassembly that heaies up or cools down to the drilling fluid, and keep certain temperature, avoid the temperature of drilling fluid to influence the accuracy of shear stress experiment, reduce the test result error, improve the reliability of measuring accuracy and result.

Description

Constant temperature detection device for continuously measuring shear stress

Technical Field

The utility model relates to a drilling fluid capability measurement technical field, in particular to constant temperature detection device of continuous measurement shear stress.

Background

In the well drilling engineering field, drilling fluid shear stress is the important index parameter of evaluation drilling fluid liquid adaptability, and current device that is used for measuring drilling fluid shear stress mainly includes manual FANN35 viscometer and continuous automatic measure drilling fluid shear stress device, and manual FANN35 viscometer among the prior art mainly comprises urceolus, inner tube, spring, calibrated scale, rotor, plumb bob, and its measurement process is: when the outer cylinder rotates at a certain constant speed, the drilling fluid in the annular gap is driven to rotate, the inner cylinder connected with the torsion spring rotates for an angle due to the viscosity of the drilling fluid, the size of the rotating angle is in direct proportion to the shear stress borne by the drilling fluid according to the Newton's law of internal friction, the measurement of the viscosity of the drilling fluid is changed into the measurement of the corner of the inner cylinder, and the size of the corner can be directly read from the dial; the greater the viscosity of the liquid, the greater the shear stress required to produce a specific shear rate, and the magnitude of the viscosity depends on the nature of the liquid itself and the temperature of the environment.

The patent document CN113959910A provides an experimental apparatus for continuously measuring the shear stress of a drilling fluid, which includes a housing, an inlet and an outlet formed on the housing and oppositely arranged for pumping in and out the drilling fluid, a stator inner cylinder fixed in the housing, a rotor outer cylinder coaxially located at the periphery of the stator inner cylinder, a torque sensing device connected with the stator inner cylinder, and a driving motor connected with the rotor outer cylinder and located outside the housing. The annular space measuring section is formed between the stator inner cylinder and the rotor outer cylinder, an opening for flowing in drilling fluid is formed in the rotor outer cylinder, the driving motor drives the rotor outer cylinder to rotate relative to the stator inner cylinder so as to drive the drilling fluid entering the annular space measuring section through the opening to flow in a rotating mode, the drilling fluid flowing in the rotating mode drives the stator inner cylinder to generate torque, the shear stress value of the drilling fluid is obtained through the torque sensing device, and the shear stress of the drilling fluid can be measured continuously through the device. Because the shear stress size of drilling fluid receives ambient temperature's influence, the shear stress of general drilling fluid can descend along with the rising of temperature, finds through the research that the drilling fluid temperature fluctuates in certain extent, and in this temperature range, shear stress can change along with the difference of temperature, consequently adopts the unable invariable temperature of device in this patent for shear stress's test result is inaccurate, and unable mutual comparison seriously influences the experimental result.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve and easily receive the temperature to influence when adopting current drilling fluid shear stress experimental apparatus test, lead to the unsafe problem of test result, provide a continuous measurement shear stress's constant temperature detection device.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides a measure shear stress's constant temperature detection device in succession, includes the casing, be provided with the entry that is used for going into the drilling fluid relatively on the casing and pump the export of drilling fluid, the casing internal fixation has stator inner tube and coaxial being located the rotor urceolus of stator inner tube periphery, be provided with the opening on the rotor urceolus, the entry linkage has accuse temperature subassembly, accuse temperature subassembly includes feed liquor pipe and temperature sensor, the surface of feed liquor pipe has a plurality of arris groove, the fixed cover in arris inslot interval is equipped with cooling component and intensification subassembly, the fixed surface of casing installs the controller, accuse temperature subassembly with controller electric connection.

The technical scheme of the utility model, top at the connecting pipe sets up temperature sensor, temperature sensor's output and controller electric connection, temperature sensor's bottom contacts with the drilling fluid, before the drilling fluid gets into the casing, the drilling fluid that lasts in the convection current feed liquor pipeline carries out the temperature measurement, and give the controller in real time, the output of controller respectively with cooling module and intensification subassembly electric connection, it starts to control cooling module or intensification subassembly, the drilling fluid that the convection current was in the feed liquor pipeline heaies up or cools down, make the drilling fluid keep certain temperature, realize the control to the drilling fluid temperature, thereby avoid the accuracy of the temperature influence shear stress experiment of drilling fluid.

Further, the entry is the entry connecting pipe, the feed liquor pipe with the entry connecting pipe is for dismantling the connection, the external diameter of feed liquor pipe with the entry connecting pipe cooperatees.

Further, the temperature-sensing ware sets up the entry or the top of feed liquor pipe front end the utility model discloses in, the temperature-sensing ware can set up the upper reaches or the low reaches of rising temperature subassembly or cooling subassembly on the feed liquor pipe, can make the instruction of intensification or cooling to rising temperature subassembly or cooling subassembly fast after receiving the temperature-sensing ware because of the controller, all can reach the effect that makes the drilling fluid constancy of temperature.

Further, the liquid inlet pipe is made of metal having good thermal conductivity, such as copper.

Further, the cooling assembly and/or the heating assembly are semiconductor refrigeration pieces, the semiconductor refrigeration pieces are multiple, and the bottom surfaces of the semiconductor refrigeration pieces are attached to the surfaces of the edge grooves.

Furthermore, the cooling assembly and/or the fixed surface of the heating assembly is provided with an installation block, the surface of the installation block is provided with a first clamping groove and a second clamping groove respectively, the inside joint of the first clamping groove is provided with a first installation hoop, and the inside joint of the second clamping groove is provided with a second installation hoop. The number of the semiconductor refrigeration pieces is a plurality, and the plurality of semiconductor refrigeration pieces are electrically connected with each other. The difference between the temperature reduction assembly and the temperature rise assembly is that the installation direction of the semiconductor refrigeration sheet is opposite, so that the temperature of the drilling fluid can be regulated and controlled by utilizing the property that the semiconductor refrigeration sheet cools and raises the temperature at the same time.

Furthermore, a torque sensing device is fixedly mounted on the shell, the torque sensing device and a driving device are fixedly arranged outside the shell, the torque sensing device is connected with the stator inner cylinder, the driving device is connected with the rotor outer cylinder, and an output shaft of the driving device is fixedly connected with the rotor outer cylinder in a sleeved mode.

Further, the torque sensing device comprises a torsion element connected with the inner cylinder of the stator, a rotary transformer positioned on the outer wall of the shell and a torque sensor connected with the rotary transformer.

Further, the shell is provided with a mounting shaft hole used for penetrating through a driving shaft of the driving device, and a sealing element is arranged in the mounting shaft hole and used for sealing the connection between the driving shaft and the shell. So as to prevent the drilling fluid in the shell from flowing out through the mounting shaft hole to cause leakage.

Furthermore, the shell is also provided with a cooling component for sealing and cooling the sealing element. Because the drive shaft rotates ceaselessly, therefore can form the friction and produce a large amount of heats with between the sealing member, make the sealing member take place the damage very easily and influence sealed reliability, this cooling part's setting not only can be used to cooling down the sealing member, more importantly can further form sealed to sealing member department.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses constant temperature detection device sets up temperature sensor at the top of connecting pipe, temperature sensor's output and controller electric connection, temperature sensor's bottom and drilling fluid contact, it carries out the temperature measurement to last drilling fluid in the convection current inlet tube way, and give the controller in real time, the output of controller respectively with cooling module and intensification subassembly electric connection, it starts to control cooling module or intensification subassembly, the drilling fluid in the convection current inlet tube way heaies up or cools down, and keep certain temperature, realize the control to the drilling fluid temperature, thereby avoid the accuracy of the temperature influence shear stress experiment of drilling fluid, reduce the test result error, improve the reliability of measuring accuracy and result.

Drawings

FIG. 1 is a structural view of a constant temperature measuring apparatus for continuously measuring a shear stress in example 1;

FIG. 2 is a structural view of the inside of a case of the constant temperature measuring apparatus for continuously measuring shear stress in example 1;

FIG. 3 is a structural diagram of a temperature control assembly in example 1;

FIG. 4 is a schematic perspective view of an assembly structure of the cooling module according to embodiment 1;

FIG. 5 is a structural view of a constant temperature measuring apparatus for continuously measuring a shear stress in example 1;

the labels in the figure are: 1-shell, 2-stator inner cylinder, 3-rotor outer cylinder, 4-inlet, 41-liquid inlet pipe, 42-temperature sensor, 43-prismatic groove, 44-temperature reducing component, 45-temperature increasing component, 46-mounting block, 461-first clamping groove, 462-second clamping groove, 463-first mounting hoop, 464-second mounting hoop, 5-outlet, 6-controller, 7-torque sensing device, 71-torque element, 72-rotary transformer, 73-torque sensor, 8-driving motor and 9-cooling component.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

Example 1

As shown in fig. 1-4, a constant temperature detection device for continuously measuring shear stress includes a housing 1, an inlet 4 for pumping in drilling fluid and an outlet 5 for pumping out drilling fluid are relatively disposed on the housing 1, a stator inner cylinder 2 and a rotor outer cylinder 3 coaxially disposed at the periphery of the stator inner cylinder 2 are fixed in the housing 1, an opening is disposed on the rotor outer cylinder 3, the inlet 4 is connected with a temperature control assembly, the temperature control assembly includes a fluid inlet pipe 41 and a temperature sensor 42, a plurality of edge grooves 43 are disposed on the outer surface of the fluid inlet pipe 41, a temperature reduction assembly 44 and a temperature increase assembly 45 are fixedly disposed in the edge grooves 43 at intervals, a controller 6 is fixedly disposed on the surface of the housing 1, and the temperature control assembly is electrically connected with the controller 6.

In the present embodiment, the stator inner cylinder 2 and the rotor outer cylinder 3 are structurally matched with each other, and the drilling fluid enters the stator inner cylinder 2 from the inlet 4 through the opening on the rotor outer cylinder 3, and enters the outlet 5 through the opening on the rotor outer cylinder 3 after rotating in the stator inner cylinder 2. Entry 4 is the entry connecting pipe, and feed liquor pipe 41 is connected for dismantling with the entry connecting pipe, and the external diameter and the entry connecting pipe of feed liquor pipe 41 cooperate. The liquid inlet pipe 41 is made of a metal having good thermal conductivity, such as copper, for example. A temperature sensor 42 is provided at the top of the inlet connection pipe.

In this embodiment, the temperature raising assembly 45 and/or the temperature lowering assembly 44 are semiconductor cooling fins, a plurality of semiconductor cooling fins are annularly sleeved on the edge groove 43, as shown in fig. 4, the bottom surface of the semiconductor cooling fin is attached to the surface of the edge groove 43, a mounting block 46 is fixedly mounted on the surface of the semiconductor cooling fin, a first clamping groove 461 and a second clamping groove 462 are respectively formed on the surface of the mounting block 46, a first mounting hoop 463 is clamped inside the first clamping groove 461, a second mounting hoop 464 is clamped inside the second clamping groove 462, the first mounting hoop 463 and the second mounting hoop 464 are circular ring members, and the plurality of semiconductor cooling fins are annularly sleeved on the edge groove 43 and are clamped by the first mounting hoop 463 and the second mounting hoop 464; the number of the semiconductor refrigerating pieces is a plurality, and the plurality of semiconductor refrigerating pieces are electrically connected with one another; the rib groove 43 surfacing in this embodiment can laminate mutually with the bottom surface of semiconductor refrigeration piece to reinforcing heat conduction efficiency, cooling subassembly 44 lie in with the difference of rising temperature subassembly 45, and the installation opposite direction of semiconductor refrigeration piece can utilize the attribute that semiconductor refrigeration piece one side cooling one side rose, regulates and control the temperature of drilling fluid.

In this embodiment, a torque sensing device 7 and a driving device 8 are fixedly arranged outside the housing 1, the torque sensing device 7 is connected with the stator inner cylinder 2, the driving device 8 is connected with the rotor outer cylinder 3, and an output shaft of the driving device 8 is fixedly connected with the rotor outer cylinder 3 in a sleeved mode.

The bottom end of the temperature sensor 42 is in contact with the drilling fluid, the temperature of the drilling fluid can be measured and fed back to the controller 6, the cooling assemblies 44 and the heating assemblies 45 are arranged in a plurality of numbers and are arranged alternately, and rapid cooling or heating is facilitated. Before the drilling fluid enters the casing 1, the output end of the temperature sensor 42 is electrically connected with the controller 6, and the output end of the controller 6 is electrically connected with the temperature reduction component 44 and the temperature rise component 45 respectively. In the shell 1, the stator inner cylinder 2 and the rotor outer cylinder 3 are movably arranged in an inner cavity of the shell 1, a measuring cavity is formed between the stator inner cylinder 2 and the rotor outer cylinder 3, an opening on the rotor outer cylinder 3 is communicated with an inlet 4 and an outlet 5 and is used for flowing in or flowing out drilling fluid, the driving device 8 drives the rotor outer cylinder 3 to rotate relative to the stator inner cylinder 2 so as to drive the drilling fluid entering the measuring cavity through the opening to rotate and flow, so as to drive the stator inner cylinder 2 to continuously generate torque, and the torque sensing device 7 connected with the stator inner cylinder 2 can continuously convert the torque into a shear stress value of the drilling fluid to be measured, so that the continuous and automatic measurement of the shear stress of the drilling fluid is realized, and the measurement result can be digitally and continuously recorded through the torque sensing device 7, so that the change condition of the shear stress of the drilling fluid in a drilling construction site can be monitored more efficiently and accurately; the shear stress of the drilling fluid can be directly measured.

The experimental device for continuously measuring the shearing stress of the drilling fluid works:

drilling fluid is when flowing through temperature sensor 42 bottom, and temperature sensor 42 can detect the real-time temperature of the drilling fluid that awaits measuring to give controller 6 in real time, control cooling subassembly 44 or the start of components 45 that heaies up through controller 6, thereby heat up or lower the temperature to the drilling fluid that awaits measuring in the feed liquor pipe 41 of flowing through, and keep certain temperature, avoid the temperature of drilling fluid to influence the accuracy of shear stress experiment. Drilling fluid gets into casing 1 in, because the effect of pump notes, the drilling fluid enters into the measurement chamber through the opening on the rotor urceolus 3, and along with drive arrangement 8 drives rotor urceolus 3 and rotates, the rotation of rotor urceolus 3 drives and measures intracavity drilling fluid and continuously takes place rotatory flow, because the drilling fluid has viscous resistance to drive stator inner tube 2 and produce the moment of torsion, the moment of torsion that corresponds then obtains the shear stress value of drilling fluid through moment of torsion sensing device 7.

The torque sensor device 7 comprises a torsion element 71 connected to the stator inner tube 2, a rotary transformer 72 located on the outer wall of the housing 1, and a torque sensor connected to the rotary transformer 72. The stator inner tube 2 is fixedly mounted at the right end of the torsion element 71, the rotary transformer 72 is fixedly mounted at the left end of the torsion element 71, the torque sensor 73 is fixedly mounted at the left end of the rotary transformer 72, the torsion element 71 is fixed on the inner wall of the housing 1, the rotary transformer 72 is used for transmitting an angle deflection signal generated by the torsion element 71 to the torque sensor 73, and the torque sensor 73 is used for converting the angle deflection signal into an electric signal related to shear stress. In this embodiment, the drilling fluid in the measuring cavity drives the inner stator barrel 2 to generate a torque, so that the torsion element 71 connected to the inner stator barrel 2 generates a certain angular deflection, the resolver 72 can transmit the angular deflection signal to the torque sensor 73, and the torque sensor 73 can process the angular deflection signal and output an electrical signal related to the shear stress.

In the present embodiment, the rotor outer cylinder 3 may be configured to form a space in a radial direction thereof between the inlet 4 and the outlet 5, and an area in which an opening is formed in an axial direction thereof completely covers the inlet 4 and the outlet 5. By this arrangement, the drilling fluid pumped in through the inlet 4 can enter the measurement chamber through as many openings as possible to improve the accuracy of the drilling fluid measurement. The number of the openings of the rotor outer cylinder 3 is multiple, and the openings are evenly distributed on the rotor outer cylinder 3. This setting makes drilling fluid can be formed with each regional entering of open-ended at rotor urceolus 3 and measure the intracavity steadily, and each regional atress of rotor urceolus 3 is more steady in order to drive the drilling fluid atress of each region of measuring the intracavity more steady to help further improving drilling fluid measuring accuracy.

In some embodiments, the housing 1 is provided with a mounting shaft hole for passing the driving shaft of the driving device 8, and a sealing member is arranged in the mounting shaft hole for sealing the connection between the driving shaft and the housing 1 so as to prevent the drilling fluid in the housing 1 from leaking out through the mounting shaft hole.

In some more preferred embodiments, a cooling component 9 is further disposed on the housing 1 for cooling the seal. Because the drive shaft rotates ceaselessly, consequently can and the sealing member between form the friction and produce a large amount of heats, make the sealing member take place the damage very easily and influence sealed reliability, this cooling unit 9's setting not only can be used for cooling down the sealing member, more importantly can further form sealedly to sealing member department, that is to say that this cooling unit 9 can further form sealedly between sealing member and the drive shaft to and between sealing member and the installation shaft hole, thereby realized the double seal between drive shaft and the installation shaft hole under the combined action of cooling unit 9 and sealing member. Preferably, the cooling part 9 may include a cooling housing 1 connected to the driving shaft between the housing 1 and the driving device 8, and the cooling housing 1 is formed with a cooling fluid inlet 4 and a cooling fluid outlet 5 for communicating with an external cooling source. Preferably, the external cooling source may be, for example, an oily cooling liquid as in the prior art. In this embodiment, by connecting the cooling housing 1 to the region of the drive shaft between the housing 1 and the drive device 8, the cooling part 9 can not only cool down the heat generated on the drive shaft, but also achieve a better supporting effect on the drive shaft to ensure a more stable rotation of the drive shaft.

Example 2

The embodiment is similar to embodiment 1, and the difference is that the temperature sensor 42 is disposed at the top of the front end of the liquid inlet pipe 41, as shown in fig. 5, before the drilling fluid to be measured enters the inlet 4 from the liquid inlet pipe 41, the temperature sensor 42 is first used to detect the real-time temperature of the drilling fluid to be measured, and the real-time temperature is fed back to the controller 6, and the controller 6 is used to control the start of the temperature reducing component 44 or the temperature increasing component 45, so as to increase or decrease the temperature of the drilling fluid to be measured flowing through the liquid inlet pipe 41.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a measure shear stress's constant temperature detection device in succession, includes casing (1), be provided with relatively on casing (1) and be used for pumping into entry (4) of drilling fluid and outlet (5) of pumping out the drilling fluid, casing (1) internal fixation has stator inner tube (2) and coaxial being located rotor urceolus (3) of stator inner tube (2) periphery, be provided with the opening on rotor urceolus (3), its characterized in that, entry (4) are connected with accuse temperature subassembly, accuse temperature subassembly includes feed liquor pipe (41) and temperature sensor (42), the surface of feed liquor pipe (41) has a plurality of arris groove (43), the fixed cover in arris groove (43) interval is equipped with cooling component (44) and intensification subassembly (45), the fixed surface of casing (1) installs controller (6), accuse temperature subassembly with controller (6) electric connection.

2. The apparatus for continuously measuring shear stress according to claim 1, wherein said inlet (4) is an inlet connection pipe, said liquid inlet pipe (41) is detachably connected to said inlet connection pipe, and the outer diameter of said liquid inlet pipe (41) is matched with the inner diameter of said inlet connection pipe.

3. The isothermal detection device for the continuous measurement of shear stresses according to claim 2, characterized in that said inlet pipe (41) is made of metal with good thermal conductivity.

4. The constant-temperature detection device for continuously measuring shear stress according to claim 1, wherein the cooling component (44) and/or the heating component (45) are semiconductor refrigeration pieces, and the bottom surfaces of the semiconductor refrigeration pieces are attached to the surfaces of the edge grooves (43).

5. The constant temperature detection device for continuously measuring the shear stress according to claim 4, wherein a mounting block (46) is fixedly mounted on the surface of the temperature reduction assembly (44) and/or the temperature rise assembly (45), a first clamping groove (461) and a second clamping groove (462) are respectively formed on the surface of the mounting block (46), a first mounting hoop (463) is clamped inside the first clamping groove (461), and a second mounting hoop (464) is clamped inside the second clamping groove (462).

6. The constant temperature detection device for continuously measuring the shear stress according to any one of claims 1 to 5, wherein a torque sensing device (7) is fixedly installed on the housing (1), a torque sensing device (7) and a driving device (8) are fixedly installed outside the housing (1), the torque sensing device (7) is connected with the inner stator cylinder (2), the driving device (8) is connected with the outer rotor cylinder (3), and an output shaft of the driving device (8) is fixedly sleeved with the outer rotor cylinder (3).

7. The constant temperature detection device for continuously measuring shear stress according to claim 6, wherein the torque sensing device (7) comprises a torsion element (71), a rotary transformer (72) and a torque sensor (73), the torsion element (71) is connected with the stator inner tube (2), the rotary transformer (72) is positioned on the outer wall of the housing (1), and the torque sensor (73) is connected with the rotary transformer (72).

8. Constant temperature sensing device for continuous shear stress measurement according to claim 6, characterized in that the housing (1) is provided with a mounting shaft hole for the passage of the drive shaft of the drive means (8), in which a sealing is provided.

9. Constant temperature detection device for continuous shear stress measurement according to claim 8, characterized in that a cooling member (9) is further provided on the housing (1) for hermetically cooling the seal.

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