Stator winding cooling assembly and angular vibration testing device

Abstract

The utility model discloses a stator winding cooling assembly and an angular vibration testing device, and relates to the field of cooling facilities. The stator winding cooling assembly comprises a cooling piece and an assembling assembly. The cooling piece is suitable for surrounding and abutting against the outer side of a motor stator winding. The cooling piece is provided with an inlet, an outlet and a runner; the assembling assembly comprises an upper plate, an outer sleeve and a lower plate. According to the utility model, the cooling member is limited and installed on the outer side of the motor stator winding through the assembling assembly, the flow channel is spirally wound on the outer wall surface of the motor stator winding so as to be in full contact with the motor stator winding for heat exchange, and the inlets are arranged above the outlets at intervals, so that cooling water can circulate in the flow channel through the gravity of the cooling water; the upper plate, the outer sleeve and the lower plate jointly limit the cooling piece, so that good stability of the overall structure is guaranteed, the cooling effect is good, and the use requirement for reliable cooling of the motor stator winding can be met.

Description

Technical Field

[0001] The utility model relates to the field of cooling facilities, in particular to a stator winding cooling component and an angular vibration testing device. Background Art

[0002] An angular vibration table is a test device used to measure nonlinear and finite self-vibration modes. An angular vibration table can provide multifunctional equipment for modal analysis and system dynamics testing in laboratory and factory environments. It is a vibration device driven by a motor that can meet the requirements of low-frequency and high-precision angle stress testing. An angular vibration table usually uses a brushless DC torque motor. Due to the stator coil winding of the brushless DC torque motor, the coil will generate a lot of heat during operation, causing the motor working environment temperature to continue to rise, which will greatly reduce the test performance of the angular vibration table.

[0003] At present, there are two common ways to reduce the ambient temperature: ventilation cooling and water cooling. If ventilation cooling is used, a wind window needs to be set on the base of the angle vibration table, which will affect the strength of the base; ventilation cooling will bring in dust and water vapor in the air, affecting the internal structure of the angle vibration table and causing damage to the internal precision sensors; if water cooling is used, a water jacket structure is generally used. The inner wall of this structure is thicker, and the cooling water is far away from the motor stator winding, resulting in slow heat transfer and poor cooling effect; the inside of the water jacket is an annular water tank, and the cooling is uneven. Therefore, the above cooling structure has the problem of affecting structural stability, poor cooling effect, and difficulty in meeting usage requirements. Utility Model Content

[0004] In order to solve the technical problems raised by the above background technology, the utility model provides a stator winding cooling assembly, comprising:

[0005] A cooling member is adapted to be arranged around and in contact with the outer side of the motor stator winding; the cooling member is provided with an inlet, an outlet, and a flow channel connecting the inlet and the outlet; the flow channel is arranged on the outer wall surface of the motor stator winding in a spiral manner, and the inlet is arranged above the outlet at intervals;

[0006] An assembly component includes an upper plate, an outer sleeve and a lower plate, wherein the upper plate and the outer sleeve are detachably connected, the lower plate and the outer sleeve are detachably connected, and the outer sleeve is limitedly installed and sleeved on the outside of the cooling element; the cooling element is limitedly arranged between the upper plate and the lower plate along its axial direction.

[0007] Optionally, the cooling element comprises a spiral coil and a fixing layer, wherein the fixing layer is suitable for wrapping and fixing the spiral coil, and the inner cavity of the spiral coil is configured to form the flow channel.

[0008] Optionally, the fixing layer is configured as a heat conducting layer.

[0009] Optionally, the outer sleeve is configured as a cylindrical structure, and the upper plate and the lower plate are configured as annular structures; part of the upper plate is extended in the inner cavity of the outer sleeve to constitute a radial limit between the upper plate and the outer sleeve; part of the lower plate is extended in the inner cavity of the outer sleeve to constitute a radial limit between the lower plate and the outer sleeve.

[0010] Optionally, the assembly component further includes a first connecting member (not shown in the figure) and a second connecting member, wherein the first connecting member is used to connect the upper plate and the outer cover; and the second connecting member is used to connect the lower plate and the outer cover.

[0011] Optionally, the first connecting member and the second connecting member are configured as threaded locking members;

[0012] Any connecting piece penetrates and connects with the outer sleeve along an axial direction parallel to the outer sleeve.

[0013] Optionally, a first connection hole structure corresponding to the first connection piece is provided on the upper plate and the outer sleeve; and a second connection hole structure corresponding to the second connection piece is provided on the lower plate and the outer sleeve.

[0014] Optionally, the outer jacket is configured as a heat insulating jacket.

[0015] Optionally, the assembly component further comprises a pressing ring; the pressing ring is arranged on a side of the lower plate away from the outer sleeve; the pressing ring is suitable for being inserted between the motor stator winding and the lower plate.

[0016] An angular vibration testing device comprises the above-mentioned stator winding cooling assembly and a motor stator winding, wherein the stator winding cooling assembly is arranged around and abuts against the outside of the motor stator winding.

[0017] The technical solution provided by the utility model has the following advantages:

[0018] The stator winding cooling assembly provided by the utility model comprises a cooling member and an assembly assembly, wherein the cooling member is suitable for being arranged around and abutting against the outside of the stator winding of the motor; the cooling member is provided with an inlet, an outlet and a flow channel; the assembly assembly comprises an upper plate, an outer sleeve and a lower plate; the cooling member is limitedly arranged between the upper plate and the lower plate along its axial direction.

[0019] The stator winding cooling component of this structure is installed on the outside of the motor stator winding by assembling the component. The cooling component is provided with an inlet, an outlet and a flow channel. Cooling water is introduced into the inlet. The flow channel is spirally wound on the outer wall surface of the motor stator winding to fully contact and exchange heat with the motor stator winding. The inlet is spaced above the outlet so that the cooling water can flow in the flow channel by its own gravity. The cooling component is limited by the upper plate, the outer sleeve and the lower plate to ensure good stability of the overall structure. The cooling effect is good and can meet the use requirements for reliable cooling of the motor stator winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the spiral coil in the stator winding cooling assembly provided by the utility model;

[0022] Figure 2 A schematic diagram of the partial structure of the stator winding cooling assembly provided by the utility model;

[0023] Figure 3 A schematic diagram of the assembly of the stator winding cooling assembly and the motor stator winding provided by the utility model;

[0024] Description of reference numerals:

[0025] 1-cooling element; 11-spiral coil; 111-inlet; 112-outlet; 113-flow channel;

[0026] 21-upper plate; 22-outer casing; 23-lower plate; 3-pressure ring; 4-motor stator winding. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] This embodiment provides a stator winding cooling assembly, see Figures 1 to 3 , including a cooling member 1 and an assembly component, wherein the cooling member 1 is suitable for being arranged around and abutting against the outside of the motor stator winding 4.

[0033] See also Figure 1 and Figure 2 The cooling element 1 is provided with an inlet 111, an outlet 112 and a flow channel 113 connecting the inlet 111 and the outlet 112; the flow channel 113 is spirally wound on the outer wall surface of the motor stator winding 4, the inlet 111 is suitable for introducing cooling water, the outlet 112 is suitable for discharging the cooling water after heat exchange, and the inlet 111 is spaced above the outlet 112.

[0034] In this embodiment, see Figure 1 and Figure 2 The cooling member 1 includes a spiral coil 11 and a fixing layer (not shown in the figure), the fixing layer is suitable for wrapping the fixed spiral coil 11, and the inner cavity structure of the spiral coil 11 forms a flow channel 113. The fixing layer can be set as a solidified resin layer, after the spiral coil 11 is arranged in a spiral shape through a mold, liquid resin is introduced into the mold, and after the liquid resin is solidified, a fixing layer wrapping the fixed spiral coil 11 is formed.

[0035] In a specific implementation, the spiral coil 11 may be configured as a copper tube. Preferably, the spiral coil 11 is configured as a thin-walled copper tube.

[0036] Furthermore, in order to improve the heat transfer capacity of the cooling element 1 and enable the cooling water to quickly absorb the heat of the motor stator winding 4, the fixed layer is set as a heat conductive layer. The material for making the fixed layer is a resin material with good thermal conductivity. In some embodiments, the fixed layer is set to a material with small thermal deformation.

[0037] In this embodiment, see Figure 1 and Figure 2 The inlet 111 is spaced above the outlet 112, and the flow channel 113 is configured as a spiral descending structure. In the absence of external pressure, the cooling water can flow through the entire coil by gravity.

[0038] In some embodiments, the inlet 111 and the outlet 112 are respectively configured with interfaces, which are connected to the external circulating heat dissipation pipeline structure. The circulating heat dissipation pipeline structure can be configured with a driving pump to drive the circulation of cooling water to implement a heat exchange process of absorbing and releasing heat.

[0039] In this embodiment, see Figure 2 and Figure 3 The assembly component includes an upper plate 21, an outer sleeve 22 and a lower plate 23. The upper plate 21 and the outer sleeve 22 are detachably connected, the lower plate 23 and the outer sleeve 22 are detachably connected, and the outer sleeve 22 is limitedly installed and sleeved on the outside of the cooling element 1; the cooling element 1 is limitedly set between the upper plate 21 and the lower plate 23 along its axial direction.

[0040] In this embodiment, see Figure 2 The outer sleeve 22 is configured as a cylindrical structure, and the upper plate 21 and the lower plate 23 are configured as annular structures; part of the upper plate 21 is extended and disposed in the inner cavity of the outer sleeve 22 to constitute a radial limit between the upper plate 21 and the outer sleeve 22; part of the lower plate 23 is extended and disposed in the inner cavity of the outer sleeve 22 to constitute a radial limit between the lower plate 23 and the outer sleeve 22.

[0041] As an exemplary embodiment, see Figure 2 The upper plate 21 is provided with a flange structure on one side close to the outer sleeve 22, and the flange structure abuts and extends to the inner cavity of the outer sleeve 22, thereby forming a radial limiting method. Of course, the lower plate 23 is provided with a flange structure on one side close to the outer sleeve 22.

[0042] In some embodiments, the assembly component further includes a first connecting member (not shown in the figure) and a second connecting member (not shown in the figure), the first connecting member is used to connect the upper plate 21 and the outer sleeve 22; the second connecting member is used to connect the lower plate 23 and the outer sleeve 22.

[0043] In a specific embodiment, the first connecting member and the second connecting member are configured as thread locking members.

[0044] In a specific embodiment, the first connecting member and the second connecting member can be inserted into the connecting sleeve 22 along an axial direction parallel to the sleeve 22 .

[0045] Further, see Figure 2 The upper plate 21 and the outer sleeve 22 are provided with a first connection hole structure corresponding to the first connection piece; the lower plate 23 and the outer sleeve 22 are provided with a second connection hole structure corresponding to the second connection piece.

[0046] In some embodiments, the outer jacket 22 is configured as a heat-insulating jacket, and the heat of the motor stator winding 4 is shielded by the outer jacket 22, and the heat is absorbed by the cooling element 1 to prevent the heat from affecting other devices.

[0047] In some embodiments, in order to enhance the connection strength and promote the close connection between the stator winding cooling assembly and the motor stator winding 4, see Figure 3 The assembly assembly further includes a pressing ring 3; the pressing ring 3 is arranged on the side of the lower plate 23 away from the outer sleeve 22; the pressing ring 3 is suitable for being inserted and arranged between the motor stator winding 4 and the lower plate 23. The motor stator winding 4 is assembled by the pressing ring 3. An annular protrusion can be designed on the pressing ring 3, and an annular groove can be provided on the motor stator winding 4. The annular protrusion on the pressing ring 3 is inserted into the annular groove of the motor stator winding 4, and the outer side of the annular protrusion on the pressing ring 3 is connected to the inner wall surface of the lower plate 23.

[0048] The stator winding cooling assembly provided in the present embodiment is a cooling member 1 which is limitedly installed on the outside of the motor stator winding 4 by assembling the assembly. The cooling member 1 is provided with an inlet 111, an outlet 112 and a flow channel 113. Cooling water is introduced into the inlet 111. The flow channel 113 is spirally wound on the outer wall surface of the motor stator winding 4 to fully contact and exchange heat with the motor stator winding 4. The inlet 111 is spaced above the outlet 112 so that the cooling water can flow in the flow channel 113 by its own gravity. The cooling member 1 is limited by the upper plate 21, the outer sleeve 22 and the lower plate 23 to ensure good stability of the overall structure. The cooling effect is good and can meet the use requirements for reliable cooling of the motor stator winding 4.

[0049] Compared with ventilation cooling, the cooling structure adopted by the utility model will not damage the platform structure and affect the strength, and will not have dust and water vapor affecting the internal precision components, and the cooling effect is also better. Compared with the traditional cooling water jacket, the cooling structure adopted by the utility model can be closely attached to the stator coil, so that the heating surface is fully covered, and the cooling is faster and more uniform.

[0050] Example 2

[0051] This embodiment provides an angular vibration test device. Figure 3 It includes the stator winding cooling component of embodiment 1 and the motor stator winding 4, and the stator winding cooling component is arranged around and abutting the outer side of the motor stator winding 4.

[0052] In this embodiment, the heat generated or transferred by the motor stator winding 4 during operation is absorbed by the stator winding cooling assembly through heat exchange, so as to reduce the temperature of the motor stator winding 4 and ensure the effective test performance of the angular vibration test device.

[0053] See also Figure 3 The lower plate 23 may be provided with a mounting hole, and the lower plate 23 may be fixed to the base of the angular vibration test device through the mounting hole using fasteners, so that the stator winding cooling assembly and the motor stator winding 4 are integrally mounted on the base of the angular vibration test device.

[0054] The utility model can improve the cooling efficiency without affecting the installation of the motor stator winding 4, so that the motor can always work with a calibrated continuous output torque, thereby improving the performance of the angular vibration test device.

Claims

1. A stator winding cooling assembly, characterized in that: include: A cooling member (1) is adapted to be arranged in a surrounding and abutting relationship with the outside of a motor stator winding (4); the cooling member (1) is provided with an inlet (111), an outlet (112), and a flow channel (113) connecting the inlet (111) and the outlet (112); the flow channel (113) is arranged in a spirally wound manner on the outer wall surface of the motor stator winding (4), and the inlet (111) is arranged above the outlet (112) at intervals; An assembly component comprises an upper plate (21), an outer sleeve (22) and a lower plate (23); the upper plate (21) and the outer sleeve (22) are detachably connected, the lower plate (23) and the outer sleeve (22) are detachably connected, and the outer sleeve (22) is limitedly installed and sleeved on the outside of the cooling element (1); the cooling element (1) is limitedly arranged between the upper plate (21) and the lower plate (23) along its axial direction.

2. The stator winding cooling assembly according to claim 1, characterized in that: The cooling element (1) comprises a spiral coil (11) and a fixing layer, wherein the fixing layer is suitable for wrapping and fixing the spiral coil (11), and the inner cavity structure of the spiral coil (11) forms the flow channel (113).

3. The stator winding cooling assembly according to claim 2, characterized in that: The fixing layer is configured as a heat conducting layer.

4. The stator winding cooling assembly according to claim 1, characterized in that: The outer sleeve (22) is configured as a cylindrical structure, and the upper plate (21) and the lower plate (23) are configured as annular structures; a portion of the upper plate (21) is extended into the inner cavity of the outer sleeve (22) to form a radial limit between the upper plate (21) and the outer sleeve (22); a portion of the lower plate (23) is extended into the inner cavity of the outer sleeve (22) to form a radial limit between the lower plate (23) and the outer sleeve (22).

5. The stator winding cooling assembly according to claim 4, characterized in that: The assembly component further comprises a first connecting member and a second connecting member, wherein the first connecting member is used to connect the upper plate (21) and the outer cover (22); and the second connecting member is used to connect the lower plate (23) and the outer cover (22).

6. The stator winding cooling assembly according to claim 5, characterized in that: The first connecting member and the second connecting member are configured as thread locking members; Any connecting piece is inserted into and connected to the outer sleeve (22) along an axial direction parallel to the outer sleeve (22).

7. The stator winding cooling assembly according to claim 5, characterized in that: The upper plate (21) and the outer sleeve (22) are provided with a first connection hole structure corresponding to the first connection piece; the lower plate (23) and the outer sleeve (22) are provided with a second connection hole structure corresponding to the second connection piece.

8. The stator winding cooling assembly according to claim 4, characterized in that: The outer sleeve (22) is configured as a heat insulating sleeve.

9. The stator winding cooling assembly according to any one of claims 1 to 8, characterized in that: The assembly component further comprises a pressure ring (3); the pressure ring (3) is arranged on a side of the lower plate (23) away from the outer sleeve (22); the pressure ring (3) is suitable for being inserted between the motor stator winding (4) and the lower plate (23).

10. An angular vibration testing device, characterized in that: It comprises a stator winding cooling assembly as claimed in any one of claims 1 to 9 and a motor stator winding (4), wherein the stator winding cooling assembly is arranged in a surrounding and abutting manner on the outside of the motor stator winding (4).

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