Cooling device for permanent-magnet direct-drive synchronous variable-frequency motor of drilling pump
By setting a cooling base and cooling sleeve outside the motor, using cooling pipes and converging pipe loops, combined with thermal fan and water mist spray heads, the problem of unsafe motor cooling is solved, and efficient and safe motor cooling is achieved.
Patent Information
- Application Number
- CN202420817958.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing motor cooling device is prone to affect the strength of the motor housing, and the cooling method is unsafe, making it difficult to effectively reduce the motor temperature.
Design a cooling device for permanent magnet direct drive synchronous frequency converter motor of drilling pump. By setting a cooling base and cooling sleeve outside the motor, the cooling pipe and the convergence pipe form a loop, combining a thermal fan and a water mist spray head, the cooling liquid is achieved. Cool down, thereby reducing the motor temperature.
This device does not require modification of the motor, which is safer and more convenient, can effectively reduce the motor temperature, improve cooling efficiency, and is suitable for different models of motors.
Smart Images
Figure CN222192012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric motors, in particular to a cooling device for a permanent magnet direct-driven synchronous variable frequency electric motor of a drilling pump. Background Art
[0002] As a driving tool that can be used in many industries, electric motors are widely used. Electric motors are mainly composed of a front cover, a rear cover, and a stator and a rotor arranged inside the motor base. When the electric motor is working, a fan is usually used to cool it. The effect of using a fan alone to cool the motor is not obvious, and the motor is prone to burn out.
[0003] Existing motor cooling devices all modify the motor housing so that coolant flows in the motor housing and cools the coolant, thereby cooling the motor. However, this cooling method will affect the strength of the motor housing and is very unsafe. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a cooling device for a permanent magnet direct-drive synchronous variable frequency motor of a drilling pump, which solves the technical problem of unsafe cooling of the motor.
[0006] (II) Technical solution
[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0008] An embodiment of the utility model provides a cooling device for a permanent magnet direct-drive synchronous variable frequency motor of a drilling pump, comprising a cooling base for fixing the motor and a cooling sleeve arranged at the upper end of the cooling base and covering the outer side of the motor, a serpentine cooling pipe for the flow of coolant is provided in the cooling sleeve, a converging pipe connected to the cooling pipe is provided inside the cooling base, the cooling pipe and the converging pipe form a loop, and a cooling component for cooling the coolant in the converging pipe is provided on the cooling base.
[0009] The utility model embodiment proposes a cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump. A cooling base and a cooling sleeve are arranged on the outside of the motor. The heat generated by the motor when working is transferred outward along the outer casing. Cooling liquid flows in the cooling pipe inside the cooling sleeve, so that the temperature of the cooling sleeve is reduced, thereby absorbing the heat on the motor casing. The coolant forms a loop in the cooling pipe and the converging pipe. When the coolant flows to the converging pipe, it is cooled by the cooling component, thereby ensuring that the coolant in the cooling pipe can continuously cool the cooling sleeve, thereby continuously cooling the motor. This solution does not require modification of the motor, but only needs to be installed on the outside of the motor, which is more convenient and safer, and different cooling devices can be installed according to different motors, which is more convenient.
[0010] Optionally, a through hole is horizontally opened in the middle of the cooling base, the converging pipe is spirally arranged in the through hole, and the cooling component includes heat-conducting fans arranged at the openings at both ends of the through hole. The two heat-conducting fans have the same blowing direction and drive the air to flow rapidly in the through hole.
[0011] By opening a through hole in the middle of the cooling base, the converging pipe is arranged in a spiral shape in the through hole, and then two heat-conducting fans are used to drive the air to circulate quickly in the through hole, thereby cooling the coolant in the converging pipe. This solution has a simple structure and is easy to maintain.
[0012] Optionally, the cross-section of the converging pipe is waist-shaped.
[0013] By setting the cross-section of the converging pipe to be waist-shaped, the coolant can transfer heat to the surface of the converging pipe more quickly when flowing in the converging pipe. At the same time, the fast-flowing air can also take away the heat from the surface of the converging pipe more quickly, thereby accelerating the heat dissipation efficiency.
[0014] Optionally, the cooling base is provided with a water mist nozzle at the air inlet end of the through hole for spraying water mist into the through hole.
[0015] By arranging a water mist nozzle at the air inlet end of the through hole, after the water mist nozzle sprays water mist into the through hole, as the air flows rapidly, the water mist will evaporate when passing through the converging pipe, thereby taking away the heat on the surface of the converging pipe, thereby accelerating the heat dissipation efficiency.
[0016] Optionally, the water mist nozzles are provided in plurality and are circumferentially evenly spaced within the through hole, the water outlet ends of the water mist nozzles are inclined toward the axis of the through hole, the cooling base is provided with a circle of annular holes coaxial with the through hole at the air inlet end of the through hole, the plurality of water mist nozzles are connected to the annular holes, and the side end of the cooling base is provided with a water inlet hole connected to the annular hole.
[0017] By connecting the external water source to the water inlet, the water can flow along the water inlet to the annular hole, and then be transmitted to each water mist nozzle through the annular hole, and finally sprayed out by the water mist nozzle. This solution enables the water mist nozzle to spray water continuously, thereby achieving continuous cooling.
[0018] Optionally, the cooling sleeve is detachably connected to the cooling base.
[0019] By detachably connecting the cooling sleeve to the cooling base, the motor and the cooling base can be installed first, and then the cooling sleeve can be installed during installation, which is more convenient.
[0020] Optionally, the upper end of the cooling base is provided with two mounting holes respectively connected to the openings at both ends of the converging pipe, and the lower end of the cooling sleeve is provided with two mounting plugs respectively connected to the openings at both ends of the cooling pipe, and the mounting plugs are sealed and inserted into the mounting holes.
[0021] By opening a mounting hole on the cooling base, the mounting plug at the lower end of the cooling sleeve can be directly inserted into the mounting hole, thereby connecting the converging pipe and the cooling pipe to form a loop. This solution makes the installation and disassembly of the cooling sleeve and the cooling base more convenient.
[0022] Optionally, a layer of thermal conductive silicone grease is provided on the inner wall of the cooling sleeve and adheres to the outer surface of the motor.
[0023] By arranging thermal conductive silicone grease on the inner wall of the cooling sleeve, the thermal conductive silicone grease is made to adhere to the outer surface of the motor, so that the heat of the motor when working can be transferred to the cooling sleeve more quickly, thereby cooling the motor and accelerating the cooling efficiency.
[0024] Optionally, the cooling sleeve is provided with a filter at the air inlet end of the motor.
[0025] When the motor is working, the fan inside it will also work, thereby sucking in external air to cool itself. When the fan works for a long time, impurities in the air will enter the motor, resulting in reduced cooling efficiency. In this solution, a filter is set at one end of the cooling sleeve so that the air entering the motor is first filtered through the filter, thereby reducing the entry of impurities to ensure the cooling efficiency of the motor itself.
[0026] (III) Beneficial effects
[0027] The beneficial effects of the utility model are as follows: the cooling device of the permanent magnet direct-drive synchronous variable frequency motor of the drilling pump of the utility model arranges a cooling base and a cooling sleeve on the outside of the motor. The heat generated by the motor when working is transferred outward along the outer shell, and the coolant flows in the cooling pipe inside the cooling sleeve, so that the temperature of the cooling sleeve is reduced, thereby absorbing the heat on the motor shell, and the coolant forms a loop in the cooling pipe and the converging pipe. When the coolant flows to the converging pipe, it is cooled by the cooling component, thereby ensuring that the coolant in the cooling pipe can continuously cool the cooling sleeve, thereby continuously cooling the motor. This solution does not require modification of the motor, but only needs to be installed on the outside of the motor, which is more convenient and safer, and different cooling devices can be installed according to different motors, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;
[0029] Figure 2 A cross-sectional view of an embodiment of the utility model;
[0030] Figure 3 It is a partial explosion schematic diagram of an embodiment of the utility model.
[0031] [Description of Reference Numerals]
[0032] 1. Cooling base; 11. Through hole; 12. Converging pipe; 13. Mounting socket; 14. Ring hole; 15. Water inlet hole; 2. Cooling sleeve; 21. Cooling pipe; 22. Mounting plug; 23. Thermal grease; 24. Filter; 3. Cooling component; 31. Thermal fan; 32. Water mist nozzle. DETAILED DESCRIPTION
[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.
[0034] The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump proposed in the embodiment of the utility model arranges a cooling base and a cooling sleeve on the outside of the motor. The heat generated by the motor when working is transferred outward along the outer casing. Cooling liquid flows in the cooling pipe inside the cooling sleeve, so that the temperature of the cooling sleeve is reduced, thereby absorbing the heat on the motor casing. The cooling liquid forms a loop in the cooling pipe and the converging pipe. When the cooling liquid flows to the converging pipe, it is cooled by the cooling component, thereby ensuring that the coolant in the cooling pipe can continuously cool the cooling sleeve, thereby continuously cooling the motor. This solution does not require modification of the motor, but only needs to be installed on the outside of the motor, which is more convenient and safer, and different cooling devices can be installed according to different motors, which is more convenient.
[0035] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0036] Reference Figure 1 and Figure 2 A cooling device for a permanent magnet direct-drive synchronous variable frequency motor of a drilling pump comprises a cooling base 1 for fixing the motor and a cooling sleeve 2 which is detachably connected to the upper end of the cooling base 1 and covers the outer side of the motor.
[0037] See also Figure 2 and Figure 3 A serpentine cooling pipe 21 is provided in the cooling sleeve 2 for the flow of coolant. A through hole 11 is horizontally provided in the middle of the cooling base 1. A spiral converging pipe 12 is provided in the through hole 11 of the cooling base 1. A cooling component 3 for cooling the coolant in the converging pipe 12 is provided on the cooling base 1.
[0038] Two mounting sockets 13 are provided at the upper end of the cooling base 1 and are respectively connected to the openings at both ends of the converging pipe 12. The other ends of the two mounting sockets 13 are respectively connected to the two ends of the converging pipe 12. Two mounting plugs 22 are welded at the lower end of the cooling sleeve 2 and are respectively connected to the openings at both ends of the cooling pipe 21. The mounting plugs 22 are sealed and inserted into the mounting sockets 13, so that the cooling pipe 21 and the converging pipe 12 form a loop.
[0039] The cooling assembly 3 includes heat-conducting fans 31 fixed to the openings at both ends of the through hole 11 by bolts. The two heat-conducting fans 31 have the same blowing direction and drive the air to flow rapidly in the through hole 11, thereby cooling the coolant in the converging pipe 12.
[0040] The cross section of the converging pipe 12 is waist-shaped, so that the coolant can transfer heat to the surface of the converging pipe 12 more quickly when flowing in the converging pipe 12, and the fast-flowing air can also take away the heat from the surface of the converging pipe 12 more quickly, thereby accelerating the heat dissipation efficiency.
[0041] A water mist nozzle 32 for spraying water mist into the through hole 11 is fixed by bolts at the air inlet end of the through hole 11 of the cooling base 1. A plurality of water mist nozzles 32 are arranged and are evenly spaced circumferentially distributed in the through hole 11. The water outlet end of the water mist nozzle 32 is inclined toward the axis of the through hole 11. A circle of annular holes 14 coaxial with the through hole 11 is provided at the air inlet end of the through hole 11 of the cooling base 1. The plurality of water mist nozzles 32 are connected to the annular holes 14. A water inlet hole 15 connected to the annular hole 14 is provided at the side end of the cooling base 1. By connecting the external water source to the water inlet hole 15, the water flow can flow along the water inlet hole 15 to the annular hole 14, and then be transmitted to each water mist nozzle 32 through the annular hole 14, and finally be sprayed out by the water mist nozzle 32. After the water mist nozzle 32 sprays the water mist into the through hole 11, as the air flows rapidly, the water mist will evaporate when passing through the converging pipe 12, thereby taking away the heat on the surface of the converging pipe 12, thereby accelerating the heat dissipation efficiency.
[0042] See also Figure 1 A layer of thermal conductive silicone grease 23 is bonded to the inner wall of the cooling sleeve 2 and adhered to the outer surface of the motor. The thermal conductive silicone grease 23 can transfer the heat of the motor during operation to the cooling sleeve 2 more quickly, thereby cooling the motor and accelerating the cooling efficiency.
[0043] See also Figure 2 and Figure 3 The cooling sleeve 2 is fixed with a filter screen 24 at the air inlet end of the motor by bolts. The air entering the motor is first filtered by the filter screen 24, thereby reducing the entry of impurities to ensure the cooling efficiency of the motor itself.
[0044] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0046] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.
[0047] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A cooling device for a permanent magnet direct-drive synchronous variable frequency motor of a drilling pump, characterized in that: The invention comprises a cooling base (1) for fixing the motor and a cooling sleeve (2) arranged at the upper end of the cooling base (1) and covering the outer side of the motor, wherein a serpentine cooling pipe (21) is provided in the cooling sleeve (2) for the flow of cooling liquid, a converging pipe (12) connected to the cooling pipe (21) is provided inside the cooling base (1), the cooling pipe (21) and the converging pipe (12) form a loop, and a cooling assembly (3) for cooling the cooling liquid in the converging pipe (12) is provided on the cooling base (1).
2. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 1, characterized in that: A through hole (11) is horizontally opened in the middle of the cooling base (1), the converging pipe (12) is spirally arranged in the through hole (11), and the cooling component (3) includes heat-conducting fans (31) arranged at the openings at both ends of the through hole (11), and the two heat-conducting fans (31) have the same blowing direction and drive the air to flow rapidly in the through hole (11).
3. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 2, characterized in that: The cross section of the converging pipe (12) is waist-shaped.
4. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 2, characterized in that: The cooling base (1) is provided with a water mist nozzle (32) at the air inlet end of the through hole (11) for spraying water mist into the through hole (11).
5. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 4, characterized in that: The water mist nozzles (32) are provided in plurality and are evenly spaced circumferentially distributed in the through hole (11); the water outlet end of the water mist nozzle (32) is inclined toward the axis of the through hole (11); the cooling base (1) is provided with a circle of annular holes (14) coaxial with the through hole (11) at the air inlet end of the through hole (11); the plurality of water mist nozzles (32) are connected to the annular holes (14); and the side end of the cooling base (1) is provided with a water inlet hole (15) connected to the annular hole (14).
6. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 1, characterized in that: The cooling sleeve (2) is detachably connected to the cooling base (1).
7. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 6, characterized in that: The upper end of the cooling base (1) is provided with two mounting holes (13) which are respectively connected to the openings at both ends of the converging pipe (12); the lower end of the cooling sleeve (2) is provided with two mounting plugs (22) which are respectively connected to the openings at both ends of the cooling pipe (21); the mounting plugs (22) are sealed and inserted into the mounting holes (13).
8. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 1, characterized in that: The inner wall of the cooling sleeve (2) is provided with a layer of heat-conducting silicone grease (23) which adheres to the outer surface of the motor.
9. The cooling device for a permanent magnet direct-drive synchronous variable frequency motor for a drilling pump according to claim 1, characterized in that: The cooling sleeve (2) is provided with a filter screen (24) at the air inlet end of the motor.