CN111812564A - Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection - Google Patents
Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection Download PDFInfo
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- CN111812564A CN111812564A CN202010621875.9A CN202010621875A CN111812564A CN 111812564 A CN111812564 A CN 111812564A CN 202010621875 A CN202010621875 A CN 202010621875A CN 111812564 A CN111812564 A CN 111812564A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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Abstract
The invention relates to a magnetic force testing device and a system of a magnetic pressure maintaining controller by using tension detection, wherein the magnetic force testing device comprises a tension measuring device, a bracket, a storage platform, a distance measuring component and a clamping mechanism for clamping a magnetic base, and the clamping mechanism is arranged on the bracket and positioned above the storage platform; the distance between the clamping mechanism and the object placing platform is adjustable, and the distance measuring component is used for measuring the distance between the clamping mechanism and the object placing platform; the pressure maintaining controller testing system further comprises a weighing device. The magnetic force testing device can be used for measuring the relation between the magnetic force and the distance when the magnetic force is greater than the gravity; the magnetic force testing system can measure the relationship between the magnetic force and the distance of the magnetic seat and the valve clack in the whole process of gradually approaching, can be used for testing and comparing the magnetic force of the pressure maintaining controller in different magnetic field combination modes, and has important significance for the research and performance improvement of the pressure maintaining controller.
Description
Technical Field
The invention relates to the technical field of magnetic measurement equipment, in particular to a magnetic force testing device and a magnetic force testing system of a magnetic pressure maintaining controller by using tension detection.
Background
An important process of a rock coring drilling machine in deep coring is pressure-maintaining coring, a pressure-maintaining core is a precious sample in rock mechanics research, how to realize efficient pressure maintaining of the drilling machine is a development direction of the coring drilling machine, China makes many researches on the pressure-maintaining coring and the design of the drilling machine in recent years, and China makes ' one ' for one ' in the concept of ' five-protection ' coring proposed by xi peace academicians for the first time and then ' one ' for the pressure-maintaining coring. There are many techniques to be studied for the structural design of each part in the pressure-maintaining coring.
Patent document CN110847856A discloses a flap valve structure of pressure-maintaining coring device, in which the valve seat has magnetism to attract the valve flap to close. Because the valve clack is closed without depending on the gravity of the valve clack, the valve clack is not limited by the drilling direction. The magnetic force generated by the magnetomechanical machine is used for long-distance traction, and is an ideal unstructured traction device.
However, a testing device for measuring the magnetic force of the valve seat is absent at present, so that the reliability of magnetic closing cannot be further verified, and the improvement of the pressure maintaining controller of the coring device is hindered.
Because the magnetic valve seat of the pressure-maintaining coring device is complex in numerical simulation and actual analog simulation experiments, the dynamic stress condition of the magnetic valve seat under different magnetic field combinations is difficult to study, and the mechanical model is fuzzy, so that a simplified model of a pressure-maintaining controller is usually used for replacing the magnetic valve seat in the experiments. As shown in fig. 1, a simplified model of the holding pressure controller includes a disk-shaped valve flap (No. 7) and a cylindrical magnetic seat (No. 6). The valve seat magnetic field combination and the mechanical model of the pressure maintaining controller of the coring device are improved deeply by researching the magnetic force magnitude of the simplified model magnetic force field.
In addition, as shown in fig. 2 and 3, when the magnetic base (serial number 6) of the simplified model has magnetic fields in multiple directions (the arrows in the figure represent the magnetizing directions of the permanent magnets), the magnetic base (serial number 6) is formed by splicing a plurality of magnets (61), and how to measure the magnitude of the magnetic force applied to the valve flap by the whole magnetic base in the axial direction is unsolved by the prior art.
Disclosure of Invention
The present invention provides a magnetic force testing device and system for a magnetic pressure maintaining controller using tension detection.
The invention is realized by the following technical scheme:
the magnetic force testing device of the magnetic pressure maintaining controller by using tension detection comprises a tension measuring device, a support, a storage platform, a distance measuring component and a clamping mechanism for clamping a magnetic base, wherein the clamping mechanism is arranged on the support and positioned above the storage platform;
the distance between the clamping mechanism and the object placing platform is adjustable, and the distance measuring component is used for measuring the distance between the clamping mechanism and the object placing platform, and/or the displacement of the clamping mechanism, and/or the displacement of the object placing platform;
the tension measuring device is used for measuring the upward tension of the valve clack.
Furthermore, the tension measuring device is located below the object placing platform, one end of the tension measuring device is connected with a connecting part used for connecting the valve clack, and a through hole for the connecting part to pass through is formed in the object placing platform.
Further, the clamping mechanism can move up and down relative to the support, and the distance measuring component comprises a displacement sensor, or a distance sensor, or a height scale mark arranged on the support.
Further, the magnetic force testing device of the magnetic pressure maintaining controller utilizing the tension detection further comprises a linear driving mechanism used for driving the clamping mechanism to vertically move, the clamping mechanism is connected with the support in a sliding mode, and the output end of the linear driving mechanism is connected with the clamping mechanism.
Or the bracket is a lifting bracket, and the clamping mechanism is fixedly connected with the lifting bracket.
Furthermore, the clamping mechanism is provided with a circular space for accommodating the magnetic base when being clamped, and the axis of the circular space is vertical to the horizontal plane.
Preferably, the clamping mechanism is a clamp.
Further, the magnetic force testing device of the magnetic pressure maintaining controller utilizing the tension detection further comprises a cylindrical core, and the magnetic base can be clamped between the cylindrical core and the clamping mechanism.
Further, the placement platform can move up and down relative to the support.
The magnetic force testing system of the pressure maintaining controller triggered based on the magnetic field comprises a second force measuring device besides the magnetic force testing device, wherein the second force measuring device is used for measuring the downward acting force of the valve clack on the valve clack.
Compared with the prior art, the invention has the following beneficial effects:
the magnetic force testing device is simple in structure and convenient to operate, and can be used for measuring the relation between magnetic force and distance when the magnetic force is greater than gravity;
2, the magnetic force test system can measure the relationship between the magnetic force and the distance of the magnetic seat and the valve clack in the whole process of gradually approaching, can be used for testing and comparing the magnetic force of the pressure maintaining controller in different magnetic field combination modes, and has important significance for the research and performance improvement of the pressure maintaining controller.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a simplified model of a pressure holding controller;
FIG. 2 is a three-dimensional view of the magnetic sockets of the simplified model when they are brought together;
FIG. 3 is an exploded view of the magnetic base of the simplified model;
FIG. 4 is a three-dimensional view of the first embodiment;
FIG. 5 is a schematic illustration of an embodiment in use;
FIG. 6 is a schematic view of the second embodiment in use;
FIG. 7 is a schematic structural view of a cylindrical core;
FIG. 8 is a three-dimensional view of a third embodiment;
FIG. 9 is a three-dimensional view of the fourth embodiment;
FIG. 10 is a three-dimensional view of the fifth embodiment;
FIG. 11 is a three-dimensional view of the sixth embodiment;
FIG. 12 is a schematic structural diagram of a magnetic force testing system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example one
As shown in fig. 4, the magnetic force testing apparatus of the magnetic pressure maintaining controller using tension detection disclosed in this embodiment includes a tension measuring device 101, a bracket, a platform 102, a distance measuring component, and a clamping mechanism 3 for clamping a magnetic base.
Fixture 3 installs on the support, and fixture 3 is located the platform 102 top, and the distance between fixture 3 and the platform 102 is adjustable, and distance measurement part is used for measuring the distance between fixture 3 and the platform 102, and/or fixture 3's displacement.
The support in this embodiment includes base 4 and stand 2, and the bottom of stand 2 and base 4 rigid coupling.
The support of this embodiment is lifting support. The lifting of the bracket is realized by adjusting the height of the upright post 2. The clamping mechanism 3 is fixedly connected with the upper part of the upright post 2, and the height of the clamping mechanism 3 is adjusted by lifting the upright post 2.
The upright post 2 can be an automatic lifting mechanism or a manual lifting mechanism. If the upright post 2 is an automatic lifting mechanism, the upright post 2 can be a driving mechanism commonly used by a linear motor, a cylinder, a hydraulic cylinder and the like. If the upright post 2 is a manual automatic lifting mechanism, the upright post 2 can select a damping telescopic rod.
The distance measuring means comprises height scale markings 22 provided on the upright 2.
Because the outer side wall of the magnetic base is a cylindrical surface, the clamping mechanism 3 has a circular space for accommodating the magnetic base when being clamped, and the axis of the circular space is vertical to the horizontal plane.
In this embodiment, the clamping mechanism 3 includes a pair of clamping arms, and the clamping surfaces of the clamping arms are cylindrical surfaces. Preferably, the clamping mechanism 3 is a clamp.
One end of the tension measuring device 101 is connected with a connecting part 104 for connecting the valve flap, a through hole 103 is arranged on the platform 102, and the free end of the connecting part 104 can penetrate through the through hole 103 and extend out of the top surface of the platform 102.
The tension measuring device 101 may be selected from an electronic tension meter, a spring balance, and the like. The connecting member 104 may be selected from a string, a band, a cord, and the like. The connecting member 104 is preferably a rigid cable, which is guaranteed not to deform, so as not to affect the experimental results.
The application method of the embodiment comprises the following steps:
as shown in fig. 5, the tension measuring device 101 is installed below the platform 102, and the tension measuring device 101 may be installed on the platform 102 or on the base 4; the flap 7 rests on the platform 102. The tension measuring device 101 can be a fixed electronic tension meter, and can be fixed on the platform 102 or the base 4 through bolts.
The force measuring hook end of the tension measuring device 101 is sleeved with the connecting part 104, and the other end of the connecting part 104 is tied on the valve clack 7, so that the center lines of the tension measuring device 101, the connecting part 104 and the valve clack 7 are on the same straight line.
Then debugging is carried out, so that the connecting part 104 is straight, and the measured value of the tension measuring device 101 is zero;
the clamping mechanism 3 clamps the magnetic base 6, and moves the clamping mechanism 3 downwards to synchronously lower the magnetic base 6;
when the measured value of the tension measuring device 101 is changed from 0 to non-0, the magnetic seat 6 is indicated to just attract the valve flap 7;
and continuing to lower the magnetic base 6, and recording the corresponding height or displacement of the magnetic base 6 and the measured value of the tension measuring device 101 at the corresponding moment according to the requirement in the process. When the valve flap 7 is moved upwards against the force of gravity and the force of the tension measuring device 101, the magnetic force is equal to the sum of the force of gravity of the valve flap 7 and the force measured by the tension measuring device 101. Because in this process, the magnetic force that valve clack 7 receives is greater than self gravity, therefore valve clack 7 can be unsettled and gradually upwards move, for the distance between valve clack 7 and magnetic force seat 6 this moment of measurement, the height of valve clack 7 or calculate the ascending displacement of valve clack 7 this moment need be recorded, can calculate the distance of magnetic force seat 6 and valve clack 7 through the height of fixture 3 and valve clack 7.
In the embodiment, the relationship between the magnetic force borne by the valve clack and the distance can be measured by adopting the tension measuring device 101, and the valve clack measuring device has a simple structure and is convenient to operate; the magnetic force testing device can be used for testing and comparing the magnetic force of the pressure maintaining controller in different magnetic field combination modes, and has important significance for research and performance improvement of the pressure maintaining controller.
Example two
As shown in fig. 6 and 7, the magnetic force testing device of the magnetic pressure maintaining controller using tension detection in the present embodiment further includes a cylindrical core 8, and an outer diameter of the cylindrical core 8 is smaller than an inner diameter of the circular space. The outer diameter of the cylindrical core 8 is equal to the inner diameter of the magnetic base 6. When the magnetic base is used, the cylindrical core 8 is arranged in the center of the magnetic base 6, the clamping mechanism 3 provides a restraining force for the magnetic base 6 from the outside, and the magnetic base 6 is fixed on the bracket through the clamping action between the cylindrical core 8 and the inside and the outside of the clamping mechanism 3. The cylindrical core 8 does not affect the magnetic force of the magnetic base 6. The cylindrical core 8 may be a wood core, a rock core, a plastic tube, or the like. The cylindrical core 8 is a core, and whether the cores at different depths influence the magnetic force can be detected; the cylindrical core 8 is a plastic tube which can simulate a real core-taking tube.
EXAMPLE III
The difference between this embodiment and the first or second embodiment is: as shown in fig. 8, the distance measuring means in this embodiment comprises a displacement sensor 9 or distance sensor mounted on a support. The displacement sensor 9 or the distance sensor and the force measuring device are electrically connected with the control system. When the measurement value of the tension measuring device 101 changes from 0 to non-0, the control system automatically records the reading of the displacement sensor 9 or the distance sensor, and automatically records the measurement value of the tension measuring device 101 and the displacement at the corresponding moment according to the design requirements in the subsequent process.
Example four
The difference between this embodiment and the first, second or third embodiment is that: as shown in fig. 9, the magnetic force testing apparatus of the magnetic pressure maintaining controller using tension detection in the present embodiment further includes a linear driving mechanism 5 for driving the clamping mechanism 3 to move vertically. The linear driving mechanism 5 is arranged on the base 4, and the output end of the linear driving mechanism 5 is connected with the clamping mechanism 3. The clamping mechanism 3 is connected with the bracket in a sliding way. The linear driving mechanism 5 can be a linear motor, a cylinder, a hydraulic cylinder and other common driving mechanisms.
The linear driving mechanism 5 and the tension measuring device 101 are both electrically connected with the control system, and when the measured value of the tension measuring device 101 is changed to be not 0, the linear driving mechanism 5 automatically stops running, so that the height of the clamping mechanism 3 at the moment can be conveniently recorded.
EXAMPLE five
The difference between this embodiment and the first embodiment is: as shown in fig. 10, the gripping mechanism 3 in this embodiment can move up and down with respect to the support. The clamping mechanism 3 is connected with the support in a sliding mode, and a locking mechanism used for locking and fixing the clamping mechanism 3 is arranged between the clamping mechanism 3 and the support.
The upright post 2 is provided with a sliding sleeve, the clamping mechanism 3 is connected with the sliding sleeve, and the locking mechanism is a locking knob 21 for locking and fixing the sliding sleeve.
EXAMPLE six
The difference between this embodiment and the first embodiment is: the height of the placement platform in this embodiment can also be adjusted.
As shown in fig. 11, the platform 102 is connected to a sleeve or a clamping arm, the sleeve is mounted on the pillar 2 and is in clearance fit with the pillar 2, a locking knob 21 is disposed between the sleeve and the pillar 2, and the position of the sleeve can be locked by the locking knob 21. The clamping arm may be selected as a clamp.
The application method of the embodiment comprises the following steps:
as shown in fig. 11, the tension measuring device 101 is installed below the platform 102, and the tension measuring device 101 is installed on the base 4; the flap 7 rests on the platform 102.
Connecting the tension measuring device 101 with the valve flap 7 through a connecting part 104, so that the connecting part 104 is straightened, and the measured value of the tension measuring device 101 is zero;
the clamping mechanism 3 clamps the magnetic base 6, and moves the clamping mechanism 3 downwards to synchronously lower the magnetic base 6;
when the measured value of the tension measuring device 101 is changed from 0 to non-0, the magnetic seat 6 just attracts the valve flap 7, and the height or displacement of the magnetic seat 6 at the moment is recorded;
and continuing to lower the magnetic base 6, and recording the corresponding height or displacement of the magnetic base 6 and the measured value of the tension measuring device 101 at the corresponding moment according to the requirement in the process.
Because in this process, the magnetic force that valve clack 7 receives is greater than self gravity, therefore valve clack 7 can be unsettled and progressively upward movement, for more accurately measure the distance between valve clack 7 and magnetic force seat 6 this moment, move up platform 102 to unsettled valve clack 7 department this moment, note platform 102's height this moment, can calculate the distance between each other this moment through fixture 3 and platform 102's height.
The magnetic force testing device adopts the tension measuring device 101, and can measure the relation between the magnetic force borne by the valve clack 7 and the distance of the magnetic seat 6 when the magnetic force is greater than the gravity in the later period. But the relation between the magnetic force and the distance when the magnetic force is smaller than the gravity can not be tested because the magnetic force seat 6 is far away from the valve clack 7 in the earlier stage.
Therefore, the invention also discloses a magnetic force testing system which comprises a second force measuring device besides the magnetic force testing device. The second force measuring device is used for measuring the upward acting force of the valve clack and measuring the relation between the magnetic force and the distance when the magnetic force borne by the valve clack is smaller than the self gravity.
The second force measuring device comprises a conventional force measuring cell such as a pressure sensor or a load cell. When testing, it is placed under the clamping mechanism 3.
The second force measuring device in this embodiment selects the weighing device 1. The weighing device 1 can be an electronic scale. The electronic scale is operated by a piezoresistor and an electronic chip, and is preferable.
The application method of the embodiment comprises the following steps:
first, as shown in fig. 12, the weighing device 1 is placed below the gripping mechanism 3, and the valve flap 7 is placed on the weighing device 1; the clamping mechanism 3 clamps the magnetic base 6, the clamping mechanism 3 is moved downwards to enable the magnetic base 6 to be synchronously lowered, and the height of the clamping mechanism 3 and the measured value of the weighing device 1 at the corresponding moment are recorded according to needs in the lowering process;
when the weighing device 1 shows 0, the scale or displacement is recorded;
subsequently, the measurement is continued by replacing the tension measuring device 101.
Wherein, the weighing device 1 can be directly arranged on the base 4, and also can be directly arranged on the object platform 102. If the weighing device 1 is placed on the base 4, the distance between the holding mechanism 3 and the placement platform 102 needs to be adjusted when the weighing device is replaced with the tension measuring device 101. It is known that when the weighing apparatus 1 is shown as 0, the distance between the weighing apparatus 1 and the clamping mechanism 3 is h, and the distance between the clamping mechanism 3 and the platform 102 needs to be adjusted at this time.
If the weighing apparatus 1 is placed on the platform 102. Because the valve clack 7 is directly arranged on the weighing device when the weighing device 1 is used for measuring, and when the tension measuring device 101 is used, the valve clack 7 is directly arranged on the object placing platform 102, when the tension measuring device 101 is used for measuring, the object placing platform 102 needs to move upwards or the clamping mechanism 3 needs to move downwards for the height of the weighing device, so that the distance between the valve clack 7 and the magnetic seat 6 before and after replacement is unchanged.
The weighing device 1 of the magnetic force testing system can measure the relation between the magnetic force and the distance when the magnetic force is smaller than the gravity; the tension measuring device 101 can be used for measuring the relationship between the magnetic force and the distance when the magnetic force is larger than the gravity. The magnetic force testing system can measure the relationship between the magnetic force and the distance of the magnetic seat and the valve clack in the whole process of approaching gradually.
Of course, the invention can also be used to test the relationship of magnetic force to distance of different magnets and their attractive substances throughout the process of approaching. It is particularly suitable for testing cylindrical or cylindrical magnets.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. Utilize magnetic force testing arrangement of magnetic force pressurize controller that pulling force detected, its characterized in that: the device comprises a tension measuring device, a support, a storage platform, a distance measuring component and a clamping mechanism for clamping a magnetic base, wherein the clamping mechanism is arranged on the support and positioned above the storage platform;
the distance between the clamping mechanism and the object placing platform is adjustable, and the distance measuring component is used for measuring the distance between the clamping mechanism and the object placing platform, and/or the displacement of the clamping mechanism, and/or the displacement of the object placing platform;
the tension measuring device is used for measuring the upward tension of the valve clack.
2. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 1, wherein: the tension measuring device is located below the object placing platform, one end of the tension measuring device is connected with a connecting component used for connecting the valve clack, and a through hole for the connecting component to penetrate through is formed in the object placing platform.
3. The magnetic force test apparatus of a magnetic dwell controller using tension detection as claimed in claim 1 or 2, wherein: the clamping mechanism can move up and down relative to the support, and the distance measuring component comprises a displacement sensor, a distance sensor or a height scale mark arranged on the support.
4. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 3, wherein: the clamping mechanism is connected with the support in a sliding manner, and the output end of the linear driving mechanism is connected with the clamping mechanism.
5. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 1, wherein: the support is a lifting support, and the clamping mechanism is fixedly connected with the lifting support.
6. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 1, wherein: the clamping mechanism is provided with a circular space for accommodating the magnetic base when being clamped, and the axis of the circular space is vertical to the horizontal plane.
7. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 6, wherein: the clamping mechanism is a hoop.
8. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 6 or 7, wherein: it also comprises a cylindrical core, and the magnetic base can be clamped between the cylindrical core and the clamping mechanism.
9. The magnetic force test device of a magnetic dwell controller using tension detection as claimed in claim 1, wherein: the platform can move up and down relative to the support.
10. A test system of a magnetic force test apparatus including the magnetic dwell controller using tension detection as set forth in any one of claims 1 to 9, wherein: the valve flap further comprises a second force measuring device, and the second force measuring device is used for measuring the downward acting force of the valve flap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010621875.9A CN111812564A (en) | 2020-07-01 | 2020-07-01 | Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection |
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| CN202010621875.9A CN111812564A (en) | 2020-07-01 | 2020-07-01 | Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252224A (en) * | 2021-06-30 | 2021-08-13 | 荣旗工业科技(苏州)股份有限公司 | Magnetic tension detection method and equipment |
| CN115097363A (en) * | 2022-08-29 | 2022-09-23 | 江苏国源稀土新材料有限公司 | Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste |
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2020
- 2020-07-01 CN CN202010621875.9A patent/CN111812564A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252224A (en) * | 2021-06-30 | 2021-08-13 | 荣旗工业科技(苏州)股份有限公司 | Magnetic tension detection method and equipment |
| CN115097363A (en) * | 2022-08-29 | 2022-09-23 | 江苏国源稀土新材料有限公司 | Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste |
| CN115097363B (en) * | 2022-08-29 | 2022-11-25 | 江苏国源稀土新材料有限公司 | Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste |
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