阅读说明：本技术 一种增压器转速测量装置及测试方法 (Supercharger rotating speed measuring device and method ) 是由 丁艳 姬仕强 姜洪羽 孙红军 郭志刚 吴亚龙 于 2020-09-03 设计创作，主要内容包括：本发明公开了一种增压器转速测量装置及测试方法,包括增压器,增压器的压气机端与变径管连接,变径管的一端与进气管连接,所述增压器的压气机进口端安装有永磁体,永磁体与变径管为同轴设置,永磁体的一端开有U型槽,变径管内部设有磁电传感器,磁电传感器的输出端通过通讯线与设置在增压器外部的显示仪表连接,本增压器转速测量装置及测试方法不破坏增压器本身的结构,拆装方便、能实现特殊用途涡轮增压器转速的精确测量,大大提高转速的测量精度。(The invention discloses a supercharger rotating speed measuring device and a supercharger rotating speed 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 installed at an inlet end of a 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 magnetoelectric sensor is arranged inside the reducer pipe, and an output end of the magnetoelectric sensor is connected with a display instrument arranged outside the supercharger through a communication wire.)

1. The utility model provides a booster 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 intake pipe (10) of reducing pipe (7) are connected its characterized in that: permanent magnet (2) are installed to the compressor entrance point of booster (1), and permanent magnet (2) and reducing pipe (7) are coaxial setting, and open the one end of permanent magnet (2) has U type groove (3), and reducing pipe (7) are inside to be equipped with magnetoelectric sensor (4), and the output of magnetoelectric sensor (4) passes through communication line (5) and is connected at outside display instrument (6) of booster (1).

2. A supercharger rotation speed measuring apparatus according to claim 1, wherein: the permanent magnet (2) comprises middle big cylinder and the thin axle of an organic whole connection at middle big cylinder both ends, and the lateral surface processing of one of them thin axle has external screw thread (13), and external screw thread (13) and nut (15) threaded connection who sets up at the compressor of booster (1) end, and the tip processing of another thin axle has U type groove (3), and middle big cylinder lateral surface symmetry processing has plane (14).

3. A supercharger rotation speed measuring apparatus according to claim 1, wherein: be provided with rectangular plate (8) in reducing pipe (7), be provided with rectangle boss (16) on rectangular plate (8), the central point of rectangle boss (16) puts and opens internal thread hole (17) that have with magnetoelectric sensor (4) threaded connection, and magnetoelectric sensor (4) pass internal thread hole (17) and pass through fixation nut (9) threaded fixation.

4. A supercharger rotation speed measuring apparatus according to claim 3, 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.

5. The supercharger rotating speed measuring device and the supercharger rotating speed testing method according to claim 1, wherein the supercharger rotating speed measuring device comprises: the distance between the magnetoelectric sensor (4) and the permanent magnet (2) is Y, and the Y range is 0.5-1 mm.

6. A supercharger rotation speed measuring apparatus according to claim 1, wherein: the variable-diameter pipe (7) is of a conical structure, flanges (18) are welded at two ends of the variable-diameter pipe (7), and the variable-diameter pipe (7) is fixedly connected with a compressor end and an air inlet pipe (10) of the supercharger (1) through screws (11) respectively.

7. A test method using the supercharger rotation speed measuring apparatus according to any one of claims 1 to 6, characterized in that: the rotating shaft of the supercharger (1) rotates, the permanent magnet (2) arranged at the end of the air compressor and provided with the U-shaped groove (3) rotates along with the rotating shaft, the U-shaped groove (3) cuts magnetic lines to generate a specific magnetic field, the magnetoelectric sensor (4) cuts the specific magnetic field to generate induced electromotive force, the output frequency of the magnetoelectric sensor is changed by sine waves, the frequency of the sine waves represents the measured value of the rotating speed of the supercharger (1), the communication line (5) transmits signals to the display instrument (6), and the rotating speed value of the supercharger (1) to be measured is displayed in real time.

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 testing method.

Background

The supercharger is used as a key part of an air inlet system of a diesel engine, the performance of the supercharger directly influences the air inlet amount, the output power and the heat 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.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a supercharger rotating speed measuring device and a supercharger rotating speed testing method, which have the advantages that the structure of the supercharger is not damaged, the dismounting is convenient, the accurate measurement of the rotating speed of the turbocharger with special purposes can be realized, the rotating speed measuring precision is greatly improved, and the problems in the background art can be effectively solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a booster rotational speed measuring device, includes the booster, and the compressor end and the reducing union coupling of booster, the one end and the intake-tube connection of reducing pipe, the permanent magnet is installed to the compressor entrance point of booster, and the permanent magnet is coaxial setting with the reducing pipe, and open the one end of permanent magnet has U type groove, and the inside magnetoelectric sensor that is equipped with of reducing pipe, magnetoelectric sensor's output pass through the communication line and are connected at the outside display instrument of booster.

As a preferred technical scheme of the invention, the permanent magnet consists of a middle large cylinder and thin shafts integrally connected to two ends of the middle large cylinder, wherein an external thread is processed on the outer side surface of one thin shaft and is in threaded connection with a nut arranged at the tail end of a gas compressor of the supercharger, a U-shaped groove is processed on the end part of the other thin shaft, and a plane is symmetrically processed on the outer side surface of the middle large cylinder.

As a preferred 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 magnetoelectric sensor is formed in the center of the rectangular boss, and the magnetoelectric sensor penetrates through the internal threaded hole and is fixed through a fixing nut in a threaded manner.

As a preferred technical scheme of the invention, the rectangular boss and the permanent magnet are eccentrically arranged, the eccentric distance is X, and the X range is 0.1-0.3 mm.

As a preferred technical scheme of the invention, the distance between the magnetoelectric sensor and the permanent magnet is Y, and the Y range is 0.5-1 mm.

As a preferred 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 a compressor end and an air inlet pipe of the supercharger through screws respectively.

A rotating shaft of a supercharger rotates, a permanent magnet with a U-shaped groove arranged at the end of a gas compressor rotates along with the rotating shaft, the U-shaped groove cuts magnetic lines to generate a specific magnetic field, a magnetoelectric sensor cuts the specific magnetic field to generate induced electromotive force, the output frequency of the magnetoelectric sensor changes in a sine wave mode, the frequency of the sine wave represents the measured value of the rotating speed of the supercharger, and a communication line transmits signals to a display instrument to display the rotating speed value of the supercharger to be measured in real time.

Compared with the prior art, the invention has the beneficial effects that: this booster rotational speed measuring device compact structure, reasonable in design, convenient to detach and installation, through install at booster compressor end and the coaxial circular permanent magnet that has U type groove of booster, the booster during operation, permanent magnet and booster shafting synchronous revolution, the magnetoelectric sensor cuts the specific magnetic field that has the permanent magnet production in U type groove at the rotatory in-process of booster, turn into induced electromotive force with booster rotational speed signal, be used for signal output, need not magnetize the booster impeller, need not process the mounting hole on booster outside casing, do not destroy the structure of booster itself, do not influence the operation of booster simultaneously, the measurement accuracy of booster rotational speed has been improved greatly.

Drawings

FIG. 1 is a schematic sectional view of the assembly of the present invention;

FIG. 2 is a schematic partial cross-sectional view of the present invention;

FIG. 3 is another schematic partial cross-sectional view of the present invention;

fig. 4 is a schematic diagram of a permanent magnet structure.

In the figure: the device comprises a supercharger 1, a permanent magnet 2, a 3U-shaped groove, a magnetoelectric sensor 4, a communication wire 5, a display instrument 6, a reducer pipe 7, a rectangular plate 8, a fixing nut 9, an air inlet pipe 10, a screw 11, an external thread 13, a plane 14, a nut 15, a rectangular boss 16, an internal thread hole 17 and a flange 18.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a supercharger rotating speed measuring device comprises a supercharger 1, wherein a compressor end of the supercharger 1 is connected with a reducer pipe 7, one end of the reducer pipe 7 is connected with an air inlet pipe 10, the reducer pipe 7 is of a conical structure, flanges 18 are welded at two ends of the reducer pipe 7, the reducer pipe 7 is fixedly connected with the compressor end and the air inlet pipe 10 of the supercharger 1 through screws 11 respectively, the supercharger 1 is convenient to mount and dismount, a permanent magnet 2 is mounted at an air compressor inlet end of the supercharger 1, the permanent magnet 2 and the reducer pipe 7 are coaxially arranged, the permanent magnet 2 consists of a middle large cylinder and thin shafts integrally connected at two ends of the middle large cylinder, external threads 13 are machined on the outer side surface of one thin shaft, the external threads 13 are in threaded connection with nuts 15 arranged at the tail end of the compressor of the supercharger 1, U-shaped grooves 3 are machined at the end part of the other thin shaft, and the installation of the permanent magnets, the outer side surface of the middle large cylinder is symmetrically processed with a plane 14, a magnetoelectric sensor 4 is arranged inside a reducer pipe 7, a rectangular plate 8 is arranged inside the reducer pipe 7, a rectangular boss 16 is arranged on the rectangular plate 8, an inner threaded hole 17 in threaded connection with the magnetoelectric sensor 4 is formed in the central position of the rectangular boss 16, the magnetoelectric sensor 4 penetrates the inner threaded hole 17 and is fixed by a fixing nut 9 through threads, the distance between the magnetoelectric sensor 4 and a permanent magnet 2 is adjusted through the fixing nut 9, the distance between the magnetoelectric 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 magnetoelectric sensor 4 is connected with a display instrument 6 arranged outside a supercharger 1 through a communication wire 5, the supercharger rotating speed measuring device is compact in structure and, convenient to detach and installation can effectual improvement booster 1's rotational speed measurement accuracy, and convenient to detach and installation have greatly improved the convenience in use simultaneously.

The rotating shaft of the supercharger 1 rotates, 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 to generate a specific magnetic field, the magnetoelectric sensor 4 cuts the specific magnetic field to further generate induced electromotive force, the output frequency of the induced electromotive force is changed in a sine wave mode, the frequency of the sine wave represents the measured value of the rotating speed of the supercharger 1, the communication wire 5 transmits signals to the display instrument 6, and the rotating speed value of the supercharger 1 to be measured is displayed in real time.

The invention can be operated conveniently, occupies less space when in use and is convenient to operate and use; the magnetoelectric sensor 4 is used for cutting a specific magnetic field to generate induced electromotive force, and then the induced electromotive force is converted into a rotating speed signal to be output, so that the precision of a measuring result is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.