CN111855065A - Pipeline pressure detection device based on hydrodynamics - Google Patents
Pipeline pressure detection device based on hydrodynamics Download PDFInfo
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- CN111855065A CN111855065A CN202010739924.9A CN202010739924A CN111855065A CN 111855065 A CN111855065 A CN 111855065A CN 202010739924 A CN202010739924 A CN 202010739924A CN 111855065 A CN111855065 A CN 111855065A
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- pipe
- pressure
- connecting pipe
- hydrodynamics
- angle pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
Abstract
The invention discloses a pipeline pressure detection device based on hydrodynamics, which comprises a connecting pipe, wherein the connecting pipe comprises a water inlet and a water outlet, a narrow area is arranged between the water inlet and the water inlet, a right-angle pipe is hermetically inserted in the connecting pipe, two circular ring frames are symmetrically arranged on the inner wall of the right-angle pipe, a rotating roller is jointly and rotatably arranged on the two circular ring frames, a plurality of magnetic stripes are annularly and equidistantly arranged on the outer wall of the rotating roller, an electric power box is arranged on the connecting pipe, and the electric power box comprises a power supply end and a detection end. According to the invention, pressure difference is formed in the connecting pipe by utilizing the Bernoulli principle, so that differential pressure water flow is generated in the right-angle pipe, the differential pressure water flow is converted into electric energy through the magnetic strip and the coil winding to be used by the power box, and the pipeline conveying pressure is calculated through the frequency of alternating induced current generated by the coil winding, so that the beneficial effects of accurate detection, electric energy saving, cost reduction and convenience in use are achieved.
Description
Technical Field
The invention relates to the field of hydraulic engineering, in particular to a pipeline pressure detection device based on hydrodynamics.
Background
In hydraulic engineering pipeline transportation, need be in the pipeline many places installation pressure detection device, be convenient for obtain the pressure condition of each pipeline in real time, adjust and change the pressure in the pipeline according to pressure detection value, avoid appearing too big pipeline rupture or the unable quick effective condition of carrying of pressure undersize that leads to of pressure.
The existing pipeline pressure detection device is usually in a mechanical pointer type, the reading is not accurate enough, the numerical values read through different angles of the glass cover are different, the electronic pressure detection device needs to be connected with a power line for power supply, the power consumption and the wiring cost are increased, the energy supply of an internal battery needs to be replaced regularly, and the use is inconvenient.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, the mechanical precision is low, the electronic power supply is additionally needed, the use cost is high, and the use is not convenient enough, and provides a pipeline pressure detection device based on hydrodynamics.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pipeline pressure detection device based on hydrodynamics comprises a connecting pipe, wherein the connecting pipe comprises a water inlet and a water outlet, a narrow area is arranged between the water inlet and the water outlet, a right-angle pipe is hermetically inserted on the connecting pipe, two circular ring frames are symmetrically arranged on the inner wall of the right-angle pipe, a rotating roller is arranged on the two circular ring frames in a rotating way, a plurality of magnetic strips are arranged on the outer wall of the rotating roller in an annular equidistance way, an electric box is arranged on the connecting pipe, the power box comprises a power supply end and a detection end, the right-angle tube is inserted into the power supply end, a plurality of iron cores are embedded in the power supply end around the right-angle tube, each iron core is wound with a coil winding, the detection end is embedded with a safety control mainboard, and the control mainboard is provided with a single chip microcomputer, a display driving chip, an analog-to-digital converter, a rectifier and a voltage stabilizer.
Preferably, sealing sleeves are arranged at the joints of the right-angle pipes and the connecting pipes, so that the influence on the accuracy of pressure detection caused by water leakage at the joints due to long-time use is avoided, the detection accuracy of the device is improved, the service life of the device is prolonged, and the two ends of each right-angle pipe are respectively inserted into and communicated with the narrow area and the water outlet;
the inner diameter of the narrow area is smaller than that of the water outlet, the flow velocity of the narrow area is larger than that of the water outlet under the condition of the same conveying pressure, the pressure of an area with high flow velocity in the pipeline is smaller than that of an area with low flow velocity, the pressure of the narrow area is smaller than that of the water outlet, the pressure of a pipe orifice of the right-angle pipe in the narrow area is smaller than that of the pipe orifice of the water outlet, part of water flow flows to the pipe orifice of the right-angle pipe in the narrow area along the pipe orifice of the right-angle pipe in the water outlet, and the water flow continuously flows in the right-angle;
different delivery pressure can make delivery port and the pressure in narrow district be the direct ratio change, then the pressure differential value of delivery port and narrow district is the direct ratio change, delivery pressure increase promptly, and delivery port pressure and narrow district pressure all increase the same proportion, then the pressure differential value increase, then the intraductal water velocity of flow of right angle increase, and delivery pressure reduces, and delivery port pressure and narrow district pressure all reduce the same proportion, then the pressure differential value reduces, then the intraductal water velocity of flow of right angle reduces.
Preferably, each magnetic strip is obliquely arranged on the rotating roller;
when water flows flow along the right-angle pipe, the inclined surfaces of the magnetic strips are pushed to rotate, so that the rotating roller rotates, the plurality of magnetic strips rotate along with the rotating roller to generate induced current on the coil winding, and the induced current is alternating induced current;
the velocity of flow is different in the right angle pipe, and the magnetic stripe pivoted speed is different, and the velocity of flow is faster in the right angle pipe promptly, and magnetic stripe slew velocity is faster, and the frequency that produces alternating induced current is higher, and the velocity of flow is slower in the right angle pipe, and magnetic stripe slew velocity is slower, and the frequency that produces alternating induced current is lower.
Preferably, the single chip microcomputer is electrically connected with the display driving chip and the analog-to-digital converter respectively, the output end of the rectifier is electrically connected with the analog-to-digital converter and the voltage stabilizer respectively, and the voltage stabilizer is electrically connected with the single chip microcomputer and the display driving chip respectively;
a display screen is embedded in the surface of the detection end and is electrically connected with a display driving chip, and the coil winding is electrically connected with a rectifier;
alternating induced current generated by the coil winding is output as pulsating direct current through the rectifier, the pulsating direct current is output to the single chip microcomputer and the display driving chip for power supply through voltage stabilization of the voltage stabilizer, the pulsating direct current output by the rectifier is converted into high and low level digital signals through the analog-to-digital converter, the digital signals are output to the single chip microcomputer for processing, the frequency of the pulsating direct current can be calculated through the frequency of the digital signals, the frequency of the alternating induced current can be obtained, and the rotating speed of the rotating roller can be obtained;
pipeline delivery pressure is big more, the intraductal velocity of flow of right angle is big more, rotatory roller rotational speed is fast more, the alternating induction current frequency of production is high more, the pulsation direct current frequency that the rectification obtained is high more, the frequency of converting into digital signal is high more, the equal accessible digital signal frequency change reaction of pipeline internal pressure change promptly, the singlechip reachs the pressure pipeline according to the digital signal frequency of input and carries the pressure value to display on exporting the display screen through showing driver chip, the reading is directly perceived and accurate.
The invention has the following beneficial effects:
1. the different velocity of flow that leads to the narrow region of flow according to the diameter difference of Bernoulli's principle narrow region and delivery port is greater than the velocity of flow of delivery port, the pressure that makes the narrow region is less than the pressure of delivery port, then partial rivers form along the right-angle pipe mouth of pipe flow direction narrow region of delivery port department's right-angle pipe mouth of pipe and last rivers, rivers drive rotatory roller through the magnetic stripe of slope and rotate and produce induced-current and provide the power box electric energy in the coil winding, need not additionally to increase energy supply device or wiring, and reduce cost, practice thrift the electric energy, and it is convenient.
2. The seal cover is installed in the junction of right angle pipe and connecting pipe, avoids long-time use to lead to right angle pipe and connecting pipe junction to leak to make device detection pressure produce the error, increased device pressure detection's accuracy nature, and increased the life of device.
3. The conveying pressure changes and leads to the rivers that produce different velocity of flow in the right-angle tube, make the rotational speed of magnetic stripe and rotatory roller change, the alternating induction current frequency of the production of rotational speed transform changes, make the frequency that the rectification becomes the pulsation direct current change, then analog-to-digital conversion's digital signal frequency changes, then the singlechip can calculate conveying pressure's transform and show through the display screen according to the reverse analysis of digital signal frequency's transform, can guarantee its accurate pressure measurement promptly, also can make the audio-visual demonstration of pressure numerical value on the display screen, avoid reading error.
In conclusion, the pressure difference is formed in the connecting pipe by the Bernoulli principle, so that pressure difference water flow is generated in the right-angle pipe, the pressure difference water flow is converted into electric energy through the magnetic strip and the coil winding to be used by the power box, and the pipeline conveying pressure is calculated through the frequency of alternating induced current generated by the coil winding, so that the beneficial effects of accurate detection, electric energy saving, cost reduction and convenience in use are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a pipeline pressure detection device based on hydrodynamics according to the present invention;
fig. 2 is a schematic structural diagram of a power box of a fluid mechanics-based pipeline pressure detection device according to the present invention;
fig. 3 is a block diagram of a control motherboard of a fluid mechanics-based pipeline pressure detection device according to the present invention;
fig. 4 is an enlarged view of a magnetic strip portion of a fluid mechanics-based pipeline pressure detecting device according to the present invention.
In the figure: 1 connecting pipe, 11 water inlets, 12 water outlets, 13 narrow regions, 2 power boxes, 21 power supply ends, 211 iron cores, 212 coil windings, 22 detection ends, 221 display screens, 222 control main boards, 201 single-chip microcomputers, 202 display driving chips, 203 analog-to-digital converters, 204 rectifiers, 205 voltage stabilizers, 3 right-angle tubes, 31 sealing sleeves, 32 circular frames, 33 rotating rollers and 331 magnetic strips.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a pipeline pressure detection device based on hydrodynamics, including a connection pipe 1, the connection pipe 1 includes a water inlet 11 and a water outlet 12, a narrow region 13 is provided between the water inlet 11 and the water outlet 12, a right-angle pipe 3 is hermetically inserted in the connection pipe 1, two circular frames 32 are symmetrically installed on the inner wall of the right-angle pipe 3, a rotary roller 33 is installed on the two circular frames 32 in a common rotating manner, a plurality of magnetic stripes 331 are installed on the outer wall of the rotary roller 33 in an annular and equidistant manner, an electric power box 2 is installed on the connection pipe 1, the electric power box 2 includes a power supply end 21 and a detection end 22, the right-angle pipe 3 is inserted in the power supply end 21, a plurality of iron cores 211 are embedded around the right-angle pipe 3 in the power supply end 21, a coil winding 212 is wound on each iron core 211, a safety control mainboard 222 is embedded in, An analog-to-digital converter 203, a rectifier 204, and a voltage regulator 205.
The sealing sleeves 31 are arranged at the joints of the right-angle pipes 3 and the connecting pipes 1, so that the influence on the accuracy of pressure detection caused by water leakage at the joints due to long-time use is avoided, the detection accuracy of the device is improved, the service life of the device is prolonged, and the two ends of each right-angle pipe 3 are respectively inserted into and communicated with the narrow area 13 and the water outlet 12;
the inner diameter of the narrow area 13 is smaller than that of the water outlet 12, so that the flow velocity of the narrow area 13 is larger than that of the water outlet 12 under the condition of the same conveying pressure, according to Bernoulli's principle, the area pressure with large flow velocity in the pipeline is smaller than the area pressure with low flow velocity, the pressure at the narrow area 13 is smaller than that at the water outlet 12, the pipe orifice pressure of the right-angle pipe 3 at the narrow area 13 is smaller than that at the water outlet 12, part of water flows to the pipe orifice of the right-angle pipe 3 of the narrow area 13 along the pipe orifice of the right-angle pipe 3 at the water outlet 12, and the water flows continuously in the right-angle pipe;
different delivery pressure can make delivery port 12 and the pressure of narrow region 13 be the direct ratio change, then the pressure difference value of delivery port 12 and narrow region 13 is the direct ratio change, delivery pressure increases promptly, and delivery port 12 pressure and the equal increase same proportion of narrow region 13 pressure, then the pressure difference value increase, then the water velocity of flow increase in the right angle pipe 3, delivery pressure reduces, and delivery port 12 pressure all reduces the same proportion with narrow region 13 pressure, then the pressure difference value reduces, then the water velocity of flow reduces in the right angle pipe 3.
Each magnetic stripe 331 is installed obliquely on the rotating roller 33;
when water flows along the right-angle pipe 3, the inclined surfaces of the magnetic strips 331 which are obliquely arranged push the inclined surfaces of the magnetic strips 331 to rotate, so that the rotating roller 33 rotates, the plurality of magnetic strips 331 rotate along with the rotating roller 33 to generate induced current on the coil winding 212, and the induced current is alternating induced current;
the flow velocity in the right-angle tube 3 is different, and the rotation speed of the magnetic stripe 331 is different, that is, the faster the flow velocity in the right-angle tube 3 is, the faster the rotation speed of the magnetic stripe 331 is, the higher the frequency of the alternating induced current is generated, the slower the flow velocity in the right-angle tube 3 is, and the slower the rotation speed of the magnetic stripe 331 is, the lower the frequency of the alternating induced current is generated.
The single chip microcomputer 201 is electrically connected with the display driving chip 202 and the analog-to-digital converter 203 respectively, the output end of the rectifier 204 is electrically connected with the analog-to-digital converter 203 and the voltage stabilizer 205 respectively, and the voltage stabilizer 205 is electrically connected with the single chip microcomputer 201 and the display driving chip 202 respectively;
a display screen 221 is embedded on the surface of the detection end 22, the display screen 221 is electrically connected with the display driving chip 202, and the coil winding 212 is electrically connected with the rectifier 204;
alternating induction current generated by the coil winding 212 is output as pulsating direct current through the rectifier 204, the pulsating direct current is output to the single chip microcomputer 201 and the display driving chip 202 for power supply through the voltage stabilizer 205 in a voltage stabilizing manner, the pulsating direct current output by the rectifier 204 is converted into high and low level digital signals through the analog-to-digital converter 203, the digital signals are output to the single chip microcomputer 201 for processing, the frequency of the pulsating direct current can be calculated through the frequency of the digital signals, the frequency of the alternating induction current can be obtained, and the rotating speed of the rotating roller 33 can be obtained;
the pipeline conveying pressure is larger, the flow rate in the right-angle pipe 3 is larger, the rotating speed of the rotating roller 33 is higher, the frequency of the generated alternating induced current is higher, the frequency of the pulsating direct current obtained by rectification is higher, the frequency of the converted digital signals is higher, namely, the pressure change in the pipeline can be reflected by the frequency change of the digital signals, the single chip microcomputer 201 obtains the conveying pressure value in the pressure pipeline according to the frequency of the input digital signals, the conveying pressure value is output to the display screen 221 through the display driving chip 202 and displayed, and the reading is visual and accurate.
When the invention is used, the water inlet 11 and the water outlet 12 of the connecting pipe 1 are connected on a conveying pipeline (not shown in the figure), when the conveying pipeline starts to convey water flow, the water flow flows to the water outlet 12 through the water inlet 11, due to the narrow area 13 between the inlet 11 and the outlet 12, the flow rate of the water flow increases at the narrow area 13, the flow rate recovers at the outlet 12, i.e. the flow velocity of the narrow region 13 is greater than the flow velocity of the water outlet 12, it can be known from bernoulli's principle that the pressure at the narrow region 13 is less than the pressure at the water outlet 12, the pressure of the pipe orifice of the right-angle pipe 3 at the water outlet 12 is greater than that at the narrow area 13, part of the water flow flows to the mouth of the right-angle pipe 3 at the narrow area 13 along the mouth of the right-angle pipe 3 at the water outlet 12, namely, continuous water flow is formed in the right-angle tube 3, the water flow passes through the plurality of obliquely installed magnetic strips 331 to enable the magnetic strips 331 to drive the rotating roller 33 to rotate, and the rotating magnetic strips 331 enable the coil winding 212 to generate alternating induced current;
the alternating induction current is output to a rectifier 204 and rectified into pulsating direct current, the pulsating direct current is output to a single chip microcomputer 201 and a display driving chip 202 through a voltage stabilizer 205 in a voltage stabilizing manner for use, the single chip microcomputer 201 starts up and initializes, a display screen 221 is lightened, the pulsating direct current is converted into a digital signal through an analog-to-digital converter 203, the digital signal is input into the single chip microcomputer 201 for processing, the single chip microcomputer 201 calculates the frequency of the pulsating direct current through a built-in program and the frequency of the input digital signal, so that the frequency of the alternating induction current is calculated, the rotating speed of a magnetic strip 331 and a rotating roller 33 is calculated, so that the pressure difference between two ends of a right-angle pipe 3 is calculated, the pipeline conveying;
different pipe-line pressure makes the pressure differential at right angle pipe 3 both ends change, then the flow velocity changes in right angle pipe 3, then the rotational speed of magnetic stripe 331 changes, then the alternating induced current frequency that coil winding 212 produced changes, then the pulsation direct current frequency of rectifier 204 output changes, then the digital signal frequency of adc 203 conversion changes, then singlechip 201 calculates the pipe-line pressure through built-in program reversal, it detects accurately, need not extra power supply, save the electric energy, it is convenient and can use for a long time to use the installation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The utility model provides a pipeline pressure detection device based on hydrodynamics, includes connecting pipe (1), its characterized in that, connecting pipe (1) includes water inlet (11) and delivery port (12), be provided with between water inlet (11) and the delivery port (12) narrow district (13), sealed inserting is equipped with right angle pipe (3) on connecting pipe (1), two ring frames (32) are installed to the symmetry on right angle pipe (3) inner wall, two rotate jointly on ring frame (32) and install rotatory roller (33), a plurality of magnetic stripes (331) are installed to annular equidistance on the outer wall of rotatory roller (33), install electric power box (2) on connecting pipe (1), electric power box (2) include power supply end (21) and sense terminal (22), pipe (3) are inserted and are established in power supply end (21), power supply end (21) inner ring is equipped with a plurality of iron cores (211) around right angle pipe (3), each iron core (211) is wound with a coil winding (212), a control main board (222) is embedded in the detection end (22), and a single chip microcomputer (201), a display driving chip (202), an analog-to-digital converter (203), a rectifier (204) and a voltage stabilizer (205) are mounted on the control main board (222) respectively.
2. The hydrodynamics-based pipeline pressure detection device as claimed in claim 1, wherein a sealing sleeve (31) is installed at the connection between the right-angle pipe (3) and the connection pipe (1), and the two ends of the right-angle pipe (3) are respectively inserted into and communicated with the narrow region (13) and the water outlet (12).
3. The hydrodynamically-based pipe pressure sensing apparatus of claim 1, wherein each of the magnetic strips (331) is installed to be inclined with respect to the rotating roller (33).
4. The hydrodynamics-based pipe pressure detecting apparatus according to claim 1, wherein the single chip (201) is electrically connected to the display driving chip (202) and the analog-to-digital converter (203), the output terminal of the rectifier (204) is electrically connected to the analog-to-digital converter (203) and the voltage stabilizer (205), and the voltage stabilizer (205) is electrically connected to the single chip (201) and the display driving chip (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739924.9A CN111855065A (en) | 2020-07-28 | 2020-07-28 | Pipeline pressure detection device based on hydrodynamics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739924.9A CN111855065A (en) | 2020-07-28 | 2020-07-28 | Pipeline pressure detection device based on hydrodynamics |
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| Publication Number | Publication Date |
|---|---|
| CN111855065A true CN111855065A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010739924.9A Pending CN111855065A (en) | 2020-07-28 | 2020-07-28 | Pipeline pressure detection device based on hydrodynamics |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070192047A1 (en) * | 2004-02-16 | 2007-08-16 | Eric Foucault | Unsteady flow meter |
| CN105628099A (en) * | 2016-01-15 | 2016-06-01 | 苏州创必成电子科技有限公司 | Remote self-power pipeline fluid flow monitor |
-
2020
- 2020-07-28 CN CN202010739924.9A patent/CN111855065A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070192047A1 (en) * | 2004-02-16 | 2007-08-16 | Eric Foucault | Unsteady flow meter |
| CN105628099A (en) * | 2016-01-15 | 2016-06-01 | 苏州创必成电子科技有限公司 | Remote self-power pipeline fluid flow monitor |
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Application publication date: 20201030 |