CN113063337A - A detection device for moving position of oil plug in pipeline - Google Patents
A detection device for moving position of oil plug in pipeline Download PDFInfo
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- CN113063337A CN113063337A CN202110270163.1A CN202110270163A CN113063337A CN 113063337 A CN113063337 A CN 113063337A CN 202110270163 A CN202110270163 A CN 202110270163A CN 113063337 A CN113063337 A CN 113063337A
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- 238000001514 detection method Methods 0.000 title claims abstract description 110
- 230000033001 locomotion Effects 0.000 claims abstract description 19
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000005284 excitation Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000008859 change Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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Abstract
本发明涉及一种管道内油塞运动位置的检测装置，包括主体和检测环，检测环可拆卸的固定连接于主体上端，检测环内部设置有检测线圈，检测线圈中心为检测孔，检测主体上设置有显示屏、旋钮及电源，检测线圈与检测主体内部控制电路板构成电联接；所述检测线圈包括初级线圈和初级线圈，次级线圈由左侧的顺时针线圈和右侧的逆时针线圈以及中间连线连接而成，初级线圈设置于顺时针线圈和逆时针线圈中间，且初级线圈与次级线圈构成同轴线布置。本发明提供一种非接触式的管道内部活动的油塞位置检测装置与方法，该装置结构小巧简单，灵活便捷，适应性强，模块化设计，可根据测量需求自行选择合适规格的检测环，并方便快捷地检测出管道内部的油塞所在位置。The invention relates to a detection device for the movement position of an oil plug in a pipeline, comprising a main body and a detection ring. The detection ring is detachably and fixedly connected to the upper end of the main body, and a detection coil is arranged inside the detection ring. A display screen, a knob and a power supply are provided, and the detection coil is electrically connected to the internal control circuit board of the detection body; the detection coil includes a primary coil and a primary coil, and the secondary coil consists of a clockwise coil on the left and a counterclockwise coil on the right The primary coil is arranged between the clockwise coil and the counterclockwise coil, and the primary coil and the secondary coil form a coaxial arrangement. The invention provides a non-contact oil plug position detection device and method for moving inside a pipeline. The device has a compact and simple structure, is flexible and convenient, has strong adaptability, and has a modular design, and can select a detection ring with a suitable specification according to measurement requirements. And easily and quickly detect the position of the oil plug inside the pipeline.
Description
Technical Field
The invention relates to the field of detection, in particular to a device for detecting the movement position of an oil plug in a pipeline.
Background
In industrial production and transportation, the condition that liquid flows inside a pipeline is often involved, for transportation, long-distance pipeline transportation is often involved, and the main advantages of the transportation mode of long-distance pipeline transportation include large transportation capacity, high efficiency, small external interference, relative stability and the like. The pipeline transportation is most widely applied to the transportation of urban water, and due to the growth of population and rapid development of economy in China, urban residents have increasingly large demands for domestic water. In addition, as cities develop, excessive exploitation of groundwater and pollution of groundwater occur, which results in severe forms of water usage and creates a contradiction between the increase in demand for water resources and the decrease in the amount of available water resources. In order to solve the contradiction, water sources in areas with rich water resource content can be conveyed to water-deficient areas through a long-distance water conveying mode through a distance of more than ten kilometers or even hundreds of kilometers, and the mode can solve the problem of water resource shortage caused by uneven water resource distribution due to geographical positions, so that pipeline transportation is more important.
In addition, in industrial production, the pipeline is also an important conveying tool, but the pipeline is generally a smaller pipeline, such as a boiler pipeline, an oil supply pipeline of equipment and the like. Sometimes, in order to reflect parameters such as flow rate, pressure and the like of liquid inside the pipeline, a movable oil plug or other movable objects are often placed inside the loop of the pipeline. Parameters such as fluid flow speed and pressure in the pipeline can be indirectly known by detecting the displacement condition of the oil plug in the pipeline. Since the pipe is generally sealed and opaque, the position detection of the internal oil plug is a troublesome problem, and no ideal solution exists at present. Patent document No. CN211317202U discloses a position detecting device of a magnetic coil, which includes a machine body, a detecting ring and a current device, the working principle of the device is to energize the coil inside the device, the coil will generate electromagnetism, hold and move the device, approach the maintenance machine for maintenance, when the magnetism is attracted, the corresponding indicator light lights up, and the position of the coil inside the device can be determined. The present invention is somewhat similar to the present invention, and is also a non-contact position detecting device using the principle of electromagnetic induction. The invention has the advantages of simple structure, convenient use and smaller application range, and can solve the problem that the position of the coil in the target object is detected, for example, the coil is damaged in a large-scale device.
Disclosure of Invention
The invention provides a non-contact type device and a method for detecting the position of an oil plug in a pipeline, which aim at the condition that an effective and convenient device for detecting the position of the oil plug in the pipeline does not exist at present.
The invention relates to a device for detecting the movement position of an oil plug in a pipeline, which comprises a main body and a detection ring, wherein the detection ring is detachably and fixedly connected to the upper end of the main body; the detection coil comprises a primary coil and a primary coil, wherein the secondary coil is formed by connecting a clockwise coil on the left side, an anticlockwise coil on the right side and a middle connecting line, the primary coil is arranged between the clockwise coil and the anticlockwise coil, and the primary coil and the secondary coil form coaxial arrangement.
A raised plug is arranged below the detection ring, four electric connection pins electrically connected with the detection coil in the detection ring are arranged on the bottom of the plug, an insertion groove is formed in the upper end of the main body, four insertion holes are formed in the insertion groove, and the insertion holes are electrically connected with a circuit board in the main body; the detection ring is clamped with the upper slot of the main body through the plug, and meanwhile, the electric connection pins can be inserted into the corresponding insertion holes to form electric connection with the detection coil and the control circuit board, so that the detection ring with the proper size can be conveniently replaced according to the diameter of a detected pipeline.
The detection coil is fixedly connected in an annular groove formed in a shell of the detection ring, and sealant is filled into a gap between the detection coil and a groove body of the annular groove to fix the coil, so that the influence on the detection effect due to the movement of the coil is avoided; a lead is respectively led out from the clockwise coil and the anticlockwise coil of the secondary coil to be butted with an electric connecting pin on the plug, and the winding turns of the two parts of coils are the same; two ends of the primary coil are respectively led out a lead to be butted with an electric connecting pin on the plug; the detection coils are all formed by winding enameled wires, and the surfaces of the wires are insulated from each other; and the annular groove is connected with an annular groove cover through threads.
The power supply is arranged in the hollow grip at the lower end of the main body, and the openable battery cover is arranged below the grip, so that the battery which is lack of electricity can be replaced at any time and any place; the outer part of the grip is sleeved with a rubber insulating layer for insulating and increasing friction force, so that the grip is convenient to hold; the handle and the main body are detachably and mechanically connected.
A display screen is arranged in the middle of the front end of the main body and electrically connected with the control circuit board, and the control circuit board supplies power to the display screen and displays the output voltage of the secondary coil in real time through the display screen; the display screen is a nixie tube display screen; the knob at the front end of the main body is used for controlling the on-off state of the detection device.
The bottom of the detection ring is provided with a positioning boss, and the middle position of the bottom of the positioning boss is provided with an inserting boss; the upper end of the main body is provided with a positioning U-shaped groove, and the middle position of the positioning U-shaped groove is provided with an inserting groove; the positioning boss can be clamped in the positioning U-shaped groove to fix the detection ring on the upper end of the main body.
The control circuit board comprises an AD698 chip and a peripheral circuit; the AD698 chip is a signal conditioning system of the detection coil and can accurately convert displacement signals into direct-current voltage signals to be output; the AD698 chip is provided with a sine wave oscillator and a power amplifier for driving the detection coil; the sine wave oscillator can generate a sine wave signal so as to provide an excitation signal for the detection coil, the excitation signal is applied to a primary coil of the detection coil, then the induced voltage generated on a secondary coil is detected, the two voltage values are filtered and amplified after being calculated, and finally a direct current voltage which is in direct proportion to the position of the magnetic core can be output; four insertion holes are formed in the slot of the main body and are respectively electrically connected with the AD698 chip through four pins of JP2 on a peripheral circuit of the AD698 chip, and after the electric connection pins are inserted into the corresponding insertion holes, the detection coil is electrically connected with the AD698 chip.
The power supply voltage required by the AD698 chip is +/-15V, the power supply voltage is 24V, the power supply voltage required by the WRB2415S-3WR2 chip on the control circuit board is 24V, and the WRB2415S-3WR2 chip and peripheral circuits thereof can output stable +/-15V direct current voltage to supply power to the AD698 chip after transforming the voltage of the 24V of the power supply voltage;
the control circuit board applies sinusoidal alternating voltage to the primary coil, receives the output voltage of the secondary coil, and outputs a direct current voltage value to the outside after being processed by the AD698 chip.
The invention has the following positive effects:
the device for detecting the movement position of the oil plug in the pipeline has the following advantages:
1. the invention comprises a detection ring for detection, a handle for holding and accommodating the battery, and a main body which is connected with the detection coil and the handle and accommodates the internal circuit board. In addition, the nixie tube display screen can keep a good display effect in a relatively severe environment, and the failure rate is effectively reduced, so that the stability of the whole device is improved.
2. The invention adopts a 24V battery power supply mode, and the battery power supply has the advantages that the limitation of a power line is broken, so that the working place is not limited indoors, the working place can work in any place where the power supply can not be provided, and the environmental adaptability is greatly enhanced.
3. The invention has wide detection range, can be used for detecting the position of the oil plug in the pipeline, is not limited to the detection of the position of the oil plug, can also be used for detecting the position of most targets such as a small pipeline dredging robot in the pipeline and the like, and can detect metal or objects with changeable mutual inductance coefficients among coils.
4. The invention applies the mutual inductance principle of the coil to the position detection of metal objects such as oil plugs in the pipeline, and a non-contact measurement method is needed because the pipeline is sealed and opaque. In the measuring process, whether the measured object in the pipeline is in the detection range of the detection ring or not and the position of the measured object in the detection ring can influence the mutual inductance coefficients between the clockwise coils of the primary coil and the secondary coil and between the counterclockwise coils of the primary coil and the secondary coil, so that the final output voltage value is influenced, and the position of the measured object in the pipeline can be known according to the voltage change.
Drawings
Fig. 1 is a schematic structural view of a secondary detection coil;
fig. 2 is a schematic view of the structure of the detection coil;
FIG. 3 is a schematic view of an exploded structure of the present invention;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a schematic view of an exploded structure of the present invention;
FIG. 6 is a schematic diagram of a peripheral circuit of an AD698 chip;
FIG. 7 is a schematic diagram of a WRB2415S-3WR2 chip and peripheral circuits;
fig. 8 is a functional block diagram of an AD698 chip.
In the figure: 1, detecting coil 2, primary coil 3, secondary coil 4, clockwise coil 5, counterclockwise coil 6, middle connecting line 7, detecting hole 8, inserting boss 9, display screen 10, knob 11, detecting ring 14, annular groove 15, positioning boss 16, shell 17, groove cover 18, battery cover 19, positioning U-shaped groove 20, inserting groove
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, the device for detecting the movement position of the oil plug in the pipeline comprises a main body (12) and a detection ring (13), wherein the detection ring (13) is detachably and fixedly connected to the upper end of the main body (12), a detection coil (1) is arranged in the detection ring (13), a detection hole (7) is formed in the center of the detection coil (1), a display screen (9), a knob (10) and a power supply are arranged on the detection main body (12), and the detection coil (1) and a control circuit board in the detection main body (12) are electrically connected; the detection coil (1) comprises a primary coil (2) and a primary coil (2), the secondary coil (3) is formed by connecting a left clockwise coil (4), a right counterclockwise coil (5) and a middle connecting wire (6), the two secondary coils (3) are connected in a differential mode, the primary coil (2) is arranged between the clockwise coil (4) and the counterclockwise coil (5), and the primary coil (2) and the secondary coil (3) form a coaxial line arrangement.
A raised plug is arranged below the detection ring (13), four electric connection pins electrically connected with the detection coil (1) in the detection ring (13) are arranged on the bottom of the plug, an insertion groove is formed in the upper end of the main body (12), four insertion holes are formed in the insertion groove, and the insertion holes are electrically connected with a circuit board in the main body (12); detect ring (13) and go up slot joint through plug and main part (12), the electric connection pin can insert corresponding spliced eye simultaneously and constitute the electric connection with detection coil (1) and control circuit board in, its purpose can be convenient change suitable detection ring (13) of size according to the diameter of being surveyed the pipeline.
The detection coil (1) is fixedly connected into an annular groove (14) formed in a shell (16) of the detection ring (13), and sealant is filled into a gap between the detection coil (1) and the annular groove (14) to fix the coil, so that the influence on the detection effect due to the movement of the coil is avoided; a clockwise coil (4) and an anticlockwise coil (5) of the secondary coil (3) are respectively led out a lead to be butted with an electric connecting pin on the plug, and the winding turns of the two parts of coils are the same; two ends of the primary coil (2) are respectively led out a lead to be butted with an electric connecting pin on the plug; the detection coils (1) are all formed by winding enameled wires, and the surfaces of the wires are insulated from each other; the annular groove (14) is connected with an annular groove cover (17) through threads;
the power supply is arranged in a hollow grip (11) at the lower end of the main body (12), and a battery cover (18) which can be opened is arranged below the grip (11), so that the battery which is lack of electricity can be replaced at any time and any place; a rubber insulating layer is sleeved outside the grip (11) for insulating and increasing friction force, so that the grip is convenient to hold; the handle (11) is detachably and mechanically connected with the main body (12).
A display screen (9) is arranged in the middle of the front end of the main body (12), the display screen (9) is electrically connected with the control circuit board, the control circuit board supplies power to the display screen (9), and the output voltage of the secondary coil (3) is displayed in real time through the display screen (9); the display screen (9) is a nixie tube display screen (9); the knob (10) at the front end of the main body (12) is used for controlling the on-off state of the detection device.
A positioning boss (15) is arranged at the bottom of the detection ring (13), and an inserting boss (8) is arranged in the middle position of the bottom of the positioning boss (15); a positioning U-shaped groove (19) is formed in the upper end of the main body (12), and an inserting groove (20) is formed in the middle of the positioning U-shaped groove (19); the positioning boss (15) can be clamped in the positioning U-shaped groove (19) to fix the detection ring (13) at the upper end of the main body (12).
As shown in fig. 6 and 8, the control circuit board includes an AD698 chip and peripheral circuits; the AD698 chip is a signal conditioning system of the detection coil (1), and can accurately convert displacement signals into direct-current voltage signals for output; the AD698 chip is provided with a sine wave oscillator and a power amplifier to drive the detection coil (1); the sine wave oscillator can generate a sine wave signal so as to provide an excitation signal for the detection coil (1), the excitation signal is applied to a primary coil (2) of the detection coil (1), then the induced voltage generated on a secondary coil (3) is detected, the two voltage values are filtered and amplified after being calculated, and finally a direct current voltage which is in direct proportion to the position of the magnetic core can be output; four insertion holes are formed in the slot of the main body (12) and are respectively electrically connected with the AD698 chip through four pins of JP2 on a peripheral circuit of the AD698 chip, and after the electric connection pins are inserted into the corresponding insertion holes, the detection coil (1) is electrically connected with the AD698 chip.
As shown in fig. 7, the power supply voltage required by the AD698 chip is ± 15V, the power supply voltage is 24V, the power supply voltage required by the WRB2415S-3WR2 chip on the control circuit board is 24V, and the WRB2415S-3WR2 chip and its peripheral circuits can output stable ± 15V dc voltage to power the AD698 chip after transforming the voltage of the 24V of the power supply voltage;
the power supply mode of the control circuit board to the detection coil (1) is sine excitation, the control circuit board applies sine alternating voltage to the primary coil (2), simultaneously receives the output voltage of the secondary coil (3), and after the output voltage is processed by the AD698 chip, the control circuit board can output a direct current voltage value to the outside.
In actual operation, a power switch is turned on through a knob (10), sinusoidal excitation is applied to a primary coil (2), a mutual inductance phenomenon occurs between the primary coil (2) and a secondary coil (3), induced electromotive force is generated in the secondary coil (3), and detected secondary output voltage is the difference value of voltages generated by the two secondary coils (3) because the two secondary coils (3) are in differential connection. The AD698 chip receives and processes the output voltage of the secondary coil (3), and the processed output voltage result of the secondary coil (3) is displayed through a display screen (9). During detection, the output voltage value of the secondary coil (3) can be displayed on the display screen (9) in real time, so that the reading is facilitated.
When the device is used, the device is sleeved on the periphery of a pipeline to be detected and slowly moves at a constant speed, and when an oil plug is not detected, the mutual inductance coefficients of the primary coil (2) and the secondary coils (3) at the left end and the right end are equal, so that the induced electromotive forces of the two coils are equal, the difference value is zero, and the output voltage of the whole secondary coil (3) is also zero.
When the detected oil plug enters a detection range, the mutual inductance coefficient between the secondary coil (3) at the side where the oil plug is located and the primary coil (2) in the middle is increased, the induced electromotive force generated by the secondary coil (3) is also increased, and the voltage difference of the secondary coils (3) is not zero. When the oil plug enters the middle position of the detection ring (13), the mutual inductance coefficients at the two sides are equal again, and the output voltage is zero again. The position corresponds to the position of an oil plug inside the pipeline.
In the whole process, the change condition of the output voltage is zero, positive, zero, negative and zero in sequence, and the change condition can be detected in a reciprocating mode during use to determine the position corresponding to the middle zero voltage value, wherein the position is the position of an oil plug in the pipeline.
The above description is only a preferred application example of the device and method for detecting the movement position of the oil plug in the pipeline according to the present invention, and since it is easy for those skilled in the same technical field to make several modifications on the basis, the present specification does not limit the device and method for detecting the movement position of the oil plug in the pipeline to the specific mechanism and application range shown or described, and therefore all the modifications and equivalents that may be utilized belong to the protection scope of the present patent.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110270163.1A CN113063337A (en) | 2021-03-12 | 2021-03-12 | A detection device for moving position of oil plug in pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110270163.1A CN113063337A (en) | 2021-03-12 | 2021-03-12 | A detection device for moving position of oil plug in pipeline |
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|---|---|---|---|---|
| CN102967256A (en) * | 2012-11-20 | 2013-03-13 | 华中科技大学 | Pulse eddy current probe for pipeline |
| CN103247128A (en) * | 2013-05-16 | 2013-08-14 | 沈阳斯沃电器有限公司 | Rectangular 630-3200A electric fire alarm detector |
| CN103247134A (en) * | 2013-05-16 | 2013-08-14 | 沈阳斯沃电器有限公司 | Round 63-400A electric fire alarm detector |
| US20160131503A1 (en) * | 2013-06-13 | 2016-05-12 | Amiteq Co., Ltd. | Inductive position detection device |
| CN208254392U (en) * | 2018-04-27 | 2018-12-18 | 江苏常宝滔邦石油管件有限公司 | A kind of tubing coupling position detecting device |
| CN209895004U (en) * | 2019-06-19 | 2020-01-03 | 深圳市中科联盛科技有限公司 | Novel handheld metal detector |
| CN211317202U (en) * | 2020-03-04 | 2020-08-21 | 河源市皓吉达通讯器材有限公司 | Position detection device of magnetic coil |
-
2021
- 2021-03-12 CN CN202110270163.1A patent/CN113063337A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967256A (en) * | 2012-11-20 | 2013-03-13 | 华中科技大学 | Pulse eddy current probe for pipeline |
| CN103247128A (en) * | 2013-05-16 | 2013-08-14 | 沈阳斯沃电器有限公司 | Rectangular 630-3200A electric fire alarm detector |
| CN103247134A (en) * | 2013-05-16 | 2013-08-14 | 沈阳斯沃电器有限公司 | Round 63-400A electric fire alarm detector |
| US20160131503A1 (en) * | 2013-06-13 | 2016-05-12 | Amiteq Co., Ltd. | Inductive position detection device |
| CN208254392U (en) * | 2018-04-27 | 2018-12-18 | 江苏常宝滔邦石油管件有限公司 | A kind of tubing coupling position detecting device |
| CN209895004U (en) * | 2019-06-19 | 2020-01-03 | 深圳市中科联盛科技有限公司 | Novel handheld metal detector |
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Application publication date: 20210702 |