CN111896768B - Supercharger rotation speed measuring device and testing method - Google Patents
Supercharger rotation speed measuring device and testing method Download PDFInfo
- Publication number
- CN111896768B CN111896768B CN202010913823.9A CN202010913823A CN111896768B CN 111896768 B CN111896768 B CN 111896768B CN 202010913823 A CN202010913823 A CN 202010913823A CN 111896768 B CN111896768 B CN 111896768B
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- supercharger
- permanent magnet
- magneto
- pipe
- reducer pipe
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- 238000012360 testing method Methods 0.000 title abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/046—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring revolutions
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a supercharger rotating speed measuring device and a testing method, wherein the supercharger comprises a supercharger, a compressor end of the supercharger is connected with a reducer pipe, one end of the reducer pipe is connected with an air inlet pipe, a permanent magnet is arranged at an inlet end of the compressor of the supercharger, the permanent magnet and the reducer pipe are coaxially arranged, one end of the permanent magnet is provided with a U-shaped groove, a magneto-electric sensor is arranged in the reducer pipe, and an output end of the magneto-electric sensor is connected with a display instrument arranged outside the supercharger through a communication line.
Description
Technical Field
The invention relates to the technical field of diesel engine testing, in particular to a supercharger rotating speed measuring device and a supercharger rotating speed measuring method.
Background
The supercharger is used as a key component of an air inlet system of a diesel engine, the performance of the supercharger directly influences the air inflow, the output power and the thermal efficiency of the diesel engine, and the rotating speed of the supercharger is an important technical parameter of the supercharger and directly reflects the working state of the supercharger.
In the prior art, the rotation speed measurement of the supercharger is realized by magnetizing the supercharger or installing a sensor by punching on the outer side, and the rotation speed of the supercharger is measured in a magnetizing mode of the supercharger, so that the precision is not high; the method of installing the sensor by the outer side punching cannot be realized on some superchargers, particularly for the turbocharger with the cooling water jacket, the outer side punching is easy to damage the water jacket, and serious faults of the diesel engine can be caused under the conditions that the supercharger works at high temperature and high rotating speed.
Disclosure of Invention
The invention aims to overcome the existing defects, and provides a supercharger rotating speed measuring device and a supercharger rotating speed measuring method, which are convenient to assemble and disassemble, can accurately measure the rotating speed of a special-purpose turbocharger, greatly improve the measuring precision of the rotating speed and can effectively solve the problems in the background art, and the structure of the supercharger is not damaged.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a supercharger rotational speed measuring device, includes the booster, and the compressor end and the reducing pipe of booster are connected, and the one end and the intake-tube connection of reducing pipe, the permanent magnet is installed to the compressor inlet end of booster, and the permanent magnet is coaxial setting with the reducing pipe, and open the one end of permanent magnet has the U type groove, is equipped with the magneto sensor in the reducing pipe inside, and the output of magneto sensor passes through the communication line to be connected with the display instrument that sets up in the booster outside.
As a preferable technical scheme of the invention, the permanent magnet consists of a middle big cylinder and thin shafts integrally connected to two ends of the middle big cylinder, wherein the outer side surface of one thin shaft is provided with external threads, the external threads are in threaded connection with nuts arranged at the tail end of a compressor of the supercharger, the end part of the other thin shaft is provided with a U-shaped groove, and the outer side surface of the middle big cylinder is symmetrically provided with a plane.
As a preferable technical scheme of the invention, a rectangular plate is arranged in the reducer pipe, a rectangular boss is arranged on the rectangular plate, an internal threaded hole in threaded connection with the magneto-electric sensor is arranged at the center of the rectangular boss, and the magneto-electric sensor passes through the internal threaded hole and is fixed by a fixing nut in a threaded manner.
As a preferable technical scheme of the invention, the rectangular boss and the permanent magnet are eccentrically arranged, and the eccentric distance is X, and the X range is 0.1-0.3 mm.
As a preferable technical scheme of the invention, the distance between the magneto-electric sensor and the permanent magnet is Y, and the range of Y is 0.5-1 mm.
As a preferable technical scheme of the invention, the reducer pipe is of a conical structure, flanges are welded at two ends of the reducer pipe, and the reducer pipe is fixedly connected with the compressor end of the supercharger and the air inlet pipe through screws respectively.
A method for testing the rotation speed of supercharger includes such steps as rotating the rotary axle of supercharger, installing a permanent magnet with U-shaped slot at the end of compressor, cutting magnetic force lines by U-shaped slot to generate a specific magnetic field, cutting the specific magnetic field by magneto-electric sensor to generate induced electromotive force, generating sine wave variation of output frequency, and transmitting the signal to display instrument by communication line.
Compared with the prior art, the invention has the beneficial effects that: the supercharger rotating speed measuring device is compact in structure, reasonable in design and convenient to detach and install, the round permanent magnet with the U-shaped groove is arranged at the end of the supercharger compressor and is coaxial with the supercharger, the permanent magnet and the supercharger shafting synchronously rotate when the supercharger works, the magneto-electric sensor cuts a specific magnetic field generated by the permanent magnet with the U-shaped groove in the rotating process of the supercharger, a supercharger rotating speed signal is converted into induced electromotive force for signal output, the supercharger impeller is not required to be magnetized, a mounting hole is not required to be machined on a shell outside the supercharger, the structure of the supercharger is not damaged, meanwhile, the operation of the supercharger is not influenced, and the measuring precision of the supercharger rotating speed is greatly improved.
Drawings
FIG. 1 is a schematic view of an assembled cross-section of the present invention;
FIG. 2 is a schematic view in partial cross-section of the present invention;
FIG. 3 is another partial cross-sectional schematic view of the present invention;
Fig. 4 is a schematic view of the permanent magnet structure.
In the figure: 1 booster, 2 permanent magnet, 3U type groove, 4 magneto sensor, 5 communication line, 6 display instrument, 7 reducing pipe, 8 rectangular plate, 9 fixation nut, 10 intake pipe, 11 screw, 13 external screw thread, 14 plane, 15 nut, 16 rectangular boss, 17 internal screw hole, 18 flange.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a supercharger rotating speed measuring device, including supercharger 1, the compressor end of supercharger 1 is connected with reducing pipe 7, reducing pipe 7's one end is connected with intake pipe 10, reducing pipe 7 is conical structure, flange 18 has been welded at reducing pipe 7's both ends, reducing pipe 7 and the compressor end of supercharger 1 and intake pipe 10 pass through screw 11 fixed connection respectively, the installation and the dismantlement of supercharger 1 are convenient for, permanent magnet 2 is installed to supercharger 1's compressor inlet end, permanent magnet 2 and reducing pipe 7 are coaxial setting, permanent magnet 2 comprises middle big cylinder and the thin axle of an organic whole connection at middle big cylinder both ends, the lateral surface of one thin axle is processed and is had external screw thread 13, external screw thread 13 and the nut 15 threaded connection of setting up at supercharger 1's compressor end, the tip of another thin axle is processed and is had U type groove 3, the installation of convenient permanent magnet 2 of external screw thread 13, the middle large cylinder outer side surface is symmetrically processed with a plane 14, a magneto sensor 4 is arranged in the reducer pipe 7, a rectangular plate 8 is arranged in the reducer pipe 7, a rectangular boss 16 is arranged on the rectangular plate 8, an internal threaded hole 17 in threaded connection with the magneto sensor 4 is arranged at the center position of the rectangular boss 16, the magneto sensor 4 passes through the internal threaded hole 17 and is in threaded fixation through a fixed nut 9, the distance between the magneto sensor 4 and the permanent magnet 2 is adjusted through the fixed nut 9, the distance between the magneto sensor 4 and the permanent magnet 2 is Y, the Y range is 0.5-1 mm, the rectangular boss 16 and the permanent magnet 2 are eccentrically arranged, the eccentric distance is X, the X range is 0.1-0.3 mm, the output end of the magneto sensor 4 is connected with a display instrument 6 arranged outside the supercharger 1 through a communication line 5, the supercharger speed measuring device has compact structure and reasonable design, the rotary speed measurement precision of the supercharger 1 can be effectively improved, and meanwhile, the rotary speed measurement precision is convenient to detach and install, so that the use convenience is greatly improved.
Through the rotation of the rotating shaft of the supercharger 1, the permanent magnet 2 with the U-shaped groove 3 arranged at the end of the air compressor rotates along with the rotating shaft, the U-shaped groove 3 cuts magnetic lines of force to generate a specific magnetic field, the magneto sensor 4 cuts the specific magnetic field to generate induced electromotive force, the output frequency of the magneto sensor is changed in a sine wave manner, the frequency of the sine wave represents the measured value of the rotating speed of the supercharger 1, and the communication line 5 transmits signals to the display instrument 6 to display the rotating speed value of the supercharger 1 in real time.
The invention can be conveniently operated, occupies little space when in use, and is convenient to operate and use; the magneto-electric sensor 4 cuts a specific magnetic field to generate induced electromotive force, so that the induced electromotive force is converted into a rotating speed signal to be output, and the accuracy of a measuring result is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a supercharger rotational speed measuring device, includes booster (1), and the compressor end and the reducing pipe (7) of booster (1) are connected, and the one end and the intake pipe (10) of reducing pipe (7) are connected, its characterized in that: the air compressor inlet end of the supercharger (1) is provided with a permanent magnet (2), the permanent magnet (2) and a reducer pipe (7) are coaxially arranged, one end of the permanent magnet (2) is provided with a U-shaped groove (3), the inside of the reducer pipe (7) is provided with a magneto sensor (4), and the output end of the magneto sensor (4) is connected with a display instrument (6) arranged outside the supercharger (1) through a communication line (5);
the permanent magnet (2) consists of a middle large cylinder and thin shafts integrally connected to two ends of the middle large cylinder, wherein an external thread (13) is processed on the outer side surface of one thin shaft, the external thread (13) is in threaded connection with a nut (15) arranged at the tail end of a gas compressor of the supercharger (1), a U-shaped groove (3) is processed on the end part of the other thin shaft, and a plane (14) is symmetrically processed on the outer side surface of the middle large cylinder;
a rectangular plate (8) is arranged in the reducer pipe (7), a rectangular boss (16) is arranged on the rectangular plate (8), an internal threaded hole (17) in threaded connection with the magneto-electric sensor (4) is formed in the center of the rectangular boss (16), and the magneto-electric sensor (4) penetrates through the internal threaded hole (17) and is fixed through a fixing nut (9) in a threaded mode.
2. A supercharger speed measurement device according to claim 1, wherein: the rectangular boss (16) and the permanent magnet (2) are eccentrically arranged, the eccentric distance is X, and the X range is 0.1-0.3 mm.
3. A supercharger speed measurement device according to claim 1, wherein: the distance between the magneto-electric sensor (4) and the permanent magnet (2) is Y, and the range of Y is 0.5-1 mm.
4. A supercharger speed measurement device according to claim 1, wherein: the reducer pipe (7) is of a conical structure, flanges (18) are welded at two ends of the reducer pipe (7), and the reducer pipe (7) is fixedly connected with the compressor end of the supercharger (1) and the air inlet pipe (10) through screws (11) respectively.
5. A test method using the supercharger rotation speed measurement device according to any one of claims 1 to 4, characterized in that: through the rotation of the rotating shaft of the supercharger (1), a permanent magnet (2) with a U-shaped groove (3) arranged at the end of the air compressor rotates along with the rotating shaft, the U-shaped groove (3) cuts magnetic force lines to generate a specific magnetic field, a magneto sensor (4) cuts the specific magnetic field to generate induced electromotive force, the output frequency of the magneto sensor is changed in a sine wave, the frequency of the sine wave represents a measured value of the rotating speed of the supercharger (1), and a communication line (5) transmits signals to a display instrument (6) to display the rotating speed value of the supercharger (1) to be tested in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913823.9A CN111896768B (en) | 2020-09-03 | 2020-09-03 | Supercharger rotation speed measuring device and testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913823.9A CN111896768B (en) | 2020-09-03 | 2020-09-03 | Supercharger rotation speed measuring device and testing method |
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| Publication Number | Publication Date |
|---|---|
| CN111896768A CN111896768A (en) | 2020-11-06 |
| CN111896768B true CN111896768B (en) | 2024-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010913823.9A Active CN111896768B (en) | 2020-09-03 | 2020-09-03 | Supercharger rotation speed measuring device and testing method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212622657U (en) * | 2020-09-03 | 2021-02-26 | 河南柴油机重工有限责任公司 | Turbocharger speed measuring device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2170522Y (en) * | 1993-09-08 | 1994-06-29 | 铁道部大连内燃机车研究所 | Remote-sense magnetoelectric apparatus for measuring revolution speed |
| US20050017709A1 (en) * | 2003-07-25 | 2005-01-27 | Honeywell International Inc. | Magnetoresistive turbocharger compressor wheel speed sensor |
| DE102012200091A1 (en) * | 2012-01-04 | 2013-07-04 | Robert Bosch Gmbh | Sensor device for non-contact detection of a rotational property of a rotatable object |
| CN105510620A (en) * | 2016-01-13 | 2016-04-20 | 河北科技大学 | Measurement device of rotation speed ratio of floating ring bearing |
| CN106645783A (en) * | 2016-12-08 | 2017-05-10 | 中国北方发动机研究所(天津) | System and method for detecting rotation speed of supercharger based on magnetoelectric sensor |
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2020
- 2020-09-03 CN CN202010913823.9A patent/CN111896768B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212622657U (en) * | 2020-09-03 | 2021-02-26 | 河南柴油机重工有限责任公司 | Turbocharger speed measuring device |
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