阅读说明：本技术 一种轴向力电磁平衡装置及测功机装置 (Axial force electromagnetic balancing device and dynamometer device ) 是由 唐智 张兴刚 魏鹏程 黄旭 于 2019-10-14 设计创作，主要内容包括：本发明提供了一种电磁平衡轴向力的测功机装置,包括测功机支架、测功机、轴承体、轴、涡轮箱、柔性轴、轴向力电磁平衡装置、位移传感器,所述轴承体的左右两侧分别连接测功机支架和涡轮箱,所述轴承体的内孔设置位移传感器和电磁阀壳体；轴向力电磁平衡装置包括电磁阀壳体、左线圈、右线圈和铁芯,所述电磁阀壳体内的左右两侧分别固定所述左线圈和右线圈,且所述左线圈和所述右线圈均为中空结构,中空结构内设置所述铁芯,所述铁芯可以相对于所述左线圈和右线圈进行左右移动。本发明解决了涡轮连接高速测功机进行试验时的轴向力平衡问题,不仅可以比较准确地测得涡轮功率,而且不会对测功机转子造成损害,起到保护高速测功机的目的。(The invention provides a dynamometer device for electromagnetically balancing axial force, which comprises a dynamometer support, a dynamometer, a bearing body, a shaft, a turbine box, a flexible shaft, an axial force electromagnetic balancing device and a displacement sensor, wherein the left side and the right side of the bearing body are respectively connected with the dynamometer support and the turbine box, and an inner hole of the bearing body is provided with the displacement sensor and an electromagnetic valve shell; axial force electromagnetic balancing unit includes solenoid valve casing, left coil, right coil and iron core, left and right sides in the solenoid valve casing is fixed respectively left coil and right coil, just left side coil with right coil is hollow structure, sets up in the hollow structure the iron core, the iron core can for left side coil and right coil remove about moving. The invention solves the problem of axial force balance when the turbine is connected with the high-speed dynamometer for testing, not only can accurately measure the power of the turbine, but also can not damage the rotor of the dynamometer, thereby achieving the purpose of protecting the high-speed dynamometer.)

1. The utility model provides an axial force electromagnetic balancing unit which characterized in that: including solenoid valve case (13), left coil (11), right coil (15) and iron core (14), left and right sides in solenoid valve case (13) is fixed respectively left coil (11) and right coil (15), just left side coil (11) with right coil (15) are hollow structure, set up in the hollow structure iron core (14), iron core (14) can for left side coil (11) and right coil (15) remove about.

2. A dynamometer device for electromagnetically balancing axial force is characterized in that: comprises a dynamometer bracket (1), a dynamometer (2), a bearing body (16), a shaft (24), a turbine box, a flexible shaft (6), an axial force electromagnetic balancing device as claimed in claim 1, and a displacement sensor (10),

the left side and the right side of the bearing body (16) are respectively connected with a dynamometer support (1) and a turbine box, and the dynamometer (2) is installed on the left side of the dynamometer support (1); the bearing body (16) is of a revolving body structure, an inner hole is formed in the rotating center, and a displacement sensor (10) and the axial force electromagnetic balancing device are arranged in the inner hole;

the shaft (24) is mounted in an inner hole of the bearing body (16) through a bearing, the left end of the shaft (24) is connected with the iron core (14), and the right end of the shaft is connected with a turbine (25) in the turbine box;

the left end of the iron core (14) is connected with a turbine rotor connector (8), and the left end of the turbine rotor connector (8) is connected with a dynamometer rotor connector (3) connected with the right end of the rotor of the dynamometer (2) through the flexible shaft (6);

displacement sensor (10) are hollow structure, and the downthehole of centre passes turbine rotor connector (8), displacement sensor (10) with be equipped with the clearance between turbine rotor connector (8).

3. The electromechanically balanced axial force dynamometer device of claim 2, wherein: the left end and the right end of the torque sensor (241) are respectively connected with the shaft (24) and the turbine (25); or the left end and the right end of the torque sensor (241) are respectively connected with the iron core (14) and the shaft (24).

4. The electromechanically balanced axial force dynamometer device of claim 2, wherein: the flexible shaft (6) is of a hollow tubular structure, the left end of the flexible shaft is provided with a flexible shaft dynamometer end spline hole (4), and the right end of the flexible shaft dynamometer end spline hole (9); the dynamometer rotor connector (3) is inserted into the flexible shaft dynamometer end splined hole (4), and the turbine rotor connector (8) is inserted into the flexible shaft turbine end splined hole (9).

5. The electromechanically balanced axial force dynamometer device of claim 2, wherein: the dynamometer support (1) is provided with a dynamometer support hole (7), and the dynamometer (2) and the bearing body (16) are respectively installed at the left end and the right end of the dynamometer support hole (7);

a stepped hole (17) is formed in the rotation center of the bearing body (16), a bearing body left flange (12) and a bearing body right flange (21) are respectively arranged at two ends of the bearing body (16), and the bearing body left flange (12) is connected with the dynamometer support (1) through a bearing body left flange screw (5); the bearing body right flange (21) is connected with the turbine box left shell (19) through a bearing body right flange screw (22); the axial force electromagnetic balance device and the displacement sensor (10) are arranged in a left hole of the stepped hole (17);

the turbine box left shell (19) and the turbine box right shell (26) are connected through a turbine box bolt (20) to form a turbine box; a left bearing (18) and a right bearing (23) are arranged in a hole at the right end of the bearing body (16), a shaft (24) penetrates through holes of the left bearing (18) and the right bearing (23), and the right end of the shaft (24) is connected with a turbine (25).

6. The electromechanically balanced axial force dynamometer device of claim 2, wherein: during the test, according to the position signal detected by the displacement sensor (10), the iron core (14) is controlled to be kept at the initial position by controlling the current passing through each of the left coil (11) and the right coil (15).

Technical Field

The invention belongs to the technical field of electromechanics, and particularly relates to an axial force electromagnetic balancing device and a dynamometer device.

Background

The high-speed dynamometer can be used for carrying out a turbine dynamometer test, when a turbine is directly connected with the high-speed dynamometer test, the problem of axial force balance of the turbine needs to be solved, a thrust bearing is added on a turbine shaft in a conventional measure, but the friction power consumption of a turbine bearing system is increased due to the measure, so that the measured turbine power is inaccurate; and if the thrust structure is not added during the turbine test, the axial force of the turbine can cause damage to the dynamometer rotor.

Disclosure of Invention

In view of the above, the present invention is directed to an axial force electromagnetic balancing device and a dynamometer device, so as to solve the deficiencies of the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the invention provides an axial force electromagnetic balancing device which comprises an electromagnetic valve shell, a left coil, a right coil and an iron core, wherein the left coil and the right coil are respectively fixed on the left side and the right side in the electromagnetic valve shell, the left coil and the right coil are both of hollow structures, the iron core is arranged in the hollow structures, and the iron core can move left and right relative to the left coil and the right coil.

Compared with the prior art, the axial force electromagnetic balancing device has the following advantages:

when the device is applied, the left device and the right device are connected through the iron core, and the iron core is controlled to be kept at the initial position, so that the transmission of the axial force generated by the turbine to the dynamometer is eliminated.

The invention provides a dynamometer device for electromagnetically balancing axial force, which comprises a dynamometer bracket, a dynamometer, a bearing body, a shaft, a turbine box, a flexible shaft, the axial force electromagnetic balancing device as described in the claim 1 and a displacement sensor,

the left side and the right side of the bearing body are respectively connected with a dynamometer support and a turbine box, and the dynamometer is installed on the left side of the dynamometer support; the bearing body is of a revolving body structure, an inner hole is formed in the rotating center, and a displacement sensor and an axial force electromagnetic balancing device are arranged in the inner hole;

the shaft is arranged in an inner hole of the bearing body through a bearing, the left end of the shaft is connected with the iron core, and the right end of the shaft is connected with the turbine in the turbine box;

the left end of the iron core is connected with a turbine rotor connector, and the left end of the turbine rotor connector is connected with a dynamometer rotor connector connected with the right end of the dynamometer rotor through the flexible shaft;

the displacement sensor is of a hollow structure, a hole in the middle of the displacement sensor penetrates through the turbine rotor connector, and a gap is formed between the displacement sensor and the turbine rotor connector.

The left end and the right end of the torque sensor are respectively connected with the shaft and the turbine, and the torque sensor is positioned between the right bearing and the turbine; or the left end and the right end of the torque sensor are respectively connected with the iron core and the shaft.

Furthermore, the flexible shaft is of a hollow tubular structure, the left end of the flexible shaft is provided with a spline hole at the end of a flexible shaft dynamometer, and the right end of the flexible shaft is provided with a spline hole at the end of a flexible shaft turbine; the dynamometer rotor connector is inserted into a spline hole at the end of the flexible shaft dynamometer, and the turbine rotor connector is inserted into the spline hole at the end of the flexible shaft turbine.

Further, the dynamometer support is provided with a dynamometer support hole, and the dynamometer and the bearing body are respectively installed at the left end and the right end of the dynamometer support hole; the center of rotation of the bearing body is provided with a stepped hole, two ends of the bearing body are respectively provided with a bearing body left flange and a bearing body right flange, and the bearing body left flange is connected with the dynamometer support through a bearing body left flange screw; the bearing body right flange is connected with the turbine box left shell through a bearing body right flange screw; the axial force electromagnetic balance device and the displacement sensor are arranged in the left hole of the stepped hole; the turbine box left shell and the turbine box right shell are connected through a turbine box bolt to form a turbine box; the bearing is characterized in that a left bearing and a right bearing are arranged in a hole at the right end of the bearing body, a shaft penetrates through holes of the left bearing and the right bearing, and the right end of the shaft is connected with a turbine.

Compared with the prior art, the dynamometer device for electromagnetically balancing axial force has the following advantages:

the invention eliminates the transmission of the axial force generated by the turbine to the dynamometer by controlling the iron core to be kept at the initial position, and solves the problem of axial force balance when the turbine is connected with the high-speed dynamometer for testing. And the power value measured by the high-speed dynamometer can be verified through the measured rotor rotating speed and torque value. The problem of axial force balance when the turbine is connected with the high-speed dynamometer for testing is solved, turbine power can be accurately measured, damage to a dynamometer rotor is avoided, and the purpose of protecting the high-speed dynamometer is achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a dynamometer apparatus for electromagnetically balancing axial force according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a dynamometer apparatus for electromagnetically balancing axial force according to another embodiment of the present invention.

Description of reference numerals:

1-dynamometer support, 2-dynamometer, 3-dynamometer rotor connector, 4-flexible shaft dynamometer machine end spline hole, 5-bearing body left flange screw, 6-flexible shaft, 7-dynamometer support hole, 8-turbine rotor connector, 9-flexible shaft turbine end spline hole, 10-displacement sensor, 11-left coil, 12-bearing body left flange, 13-electromagnetic valve shell, 14-iron core, 15-right coil, 16-bearing body, 17-stepped hole, 18-left bearing, 19-turbine box left shell, 20-turbine box bolt, 21-bearing body right flange, 22-bearing body right flange screw, 23-right bearing, 24-shaft, 241-torque sensor, 25-turbine box, 26-turbine case right housing.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

FIG. 1 and FIG. 2 are sectional views of a dynamometer apparatus for electromagnetically balancing axial force according to the present invention, which includes a dynamometer support 1, a dynamometer 2, a bearing body 16, a shaft 24, a turbine box, a flexible shaft 6, an axial force electromagnetic balancing apparatus, and a displacement sensor 10,

axial force electromagnetic balancing unit includes solenoid valve housing 13, left coil 11, right coil 15 and iron core 14, left and right sides in the solenoid valve housing 13 is fixed respectively left coil 11 and right coil 15, just left side coil 11 with right coil 15 is hollow structure, sets up in the hollow structure iron core 14, iron core 14 can for left side coil 11 and right coil 15 remove about.

The left side and the right side of the bearing body 16 are respectively connected with a dynamometer support 1 and a turbine box, and a dynamometer 2 is arranged on the left side of the dynamometer support 1; the bearing body 16 is a revolving body structure, an inner hole is arranged at the rotating center, and the inner hole is provided with a displacement sensor 10 and an axial force electromagnetic balancing device;

the shaft 24 is mounted in an inner hole of the bearing body 16 through a bearing, the left end of the shaft 24 is connected with the iron core 14, and the right end of the shaft is connected with a turbine 25 in a turbine box;

the left end of the iron core 14 is connected with a turbine rotor connector 8, and the left end of the turbine rotor connector 8 is connected with a dynamometer rotor connector 3 connected with the right end of the rotor of the dynamometer 2 through the flexible shaft 6;

displacement sensor 10 is hollow structure, and the downthehole of centre passes turbine rotor connector 8, displacement sensor 10 with be equipped with the clearance between the turbine rotor connector 8.

The present invention further includes a torque sensor 241, wherein the torque sensor 241 according to an embodiment of the present invention is connected to the shaft 24 and the turbine 25 at left and right ends thereof, respectively, and the torque sensor 241 is located between the right bearing 23 and the turbine 25, as shown in fig. 1. The torque sensor 241 according to another embodiment of the present invention has left and right ends respectively connected to the core 14 and the shaft 24, as shown in fig. 2.

The flexible shaft 6 is of a hollow tubular structure, the left end of the flexible shaft is provided with a flexible shaft dynamometer end spline hole 4, and the right end of the flexible shaft dynamometer end spline hole 9; the dynamometer rotor connector 3 is inserted into the flexible shaft dynamometer end splined hole 4, and the turbine rotor connector 8 is inserted into the flexible shaft turbine end splined hole 9.

The dynamometer support 1 is provided with a dynamometer support hole 7, and the dynamometer 2 and the bearing body 16 are respectively installed at the left end and the right end of the dynamometer support hole 7;

a stepped hole 17 is formed in the rotation center of the bearing body 16, a bearing body left flange 12 and a bearing body right flange 21 are respectively arranged at two ends of the bearing body 16, and the bearing body left flange 12 is connected with the dynamometer support 1 through a bearing body left flange screw 5; the bearing body right flange 21 is connected with the turbine box left shell 19 through a bearing body right flange screw 22; the electromagnetic valve shell 13 and the displacement sensor 10 are arranged in a left hole of the stepped hole 17;

the turbine box left shell 19 and the turbine box right shell 26 are connected through a turbine box bolt 20 to form a turbine box; a left bearing 18 and a right bearing 23 are arranged in a hole at the right end of the bearing body 16, a shaft 24 penetrates through the holes of the left bearing 18 and the right bearing 23, and the right end of the shaft 24 is connected with a turbine 25.

The center of the dynamometer support hole 7, the dynamometer rotor connector 3, the turbine rotor connector 8, the flexible shaft dynamometer end spline hole 4, the flexible shaft turbine end spline hole 9, the flexible shaft 6, the iron core 14, the left bearing 18, the right bearing 23, the shaft 24 and the turbine 25 are coaxial.

During the test, according to the position signal detected by the displacement sensor 10, the iron core 14 can be controlled to be kept at the initial position by independently controlling the current passing through each of the left coil 11 and the right coil 15, and the transmission of the axial force generated by the turbine 25 to the dynamometer 2 is prevented; and the power value measured by the high-speed dynamometer can be verified through the measured rotor rotating speed and torque value.

In the test process, the power value measured by the high-speed dynamometer can be verified through the measured rotor rotating speed and torque values.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.