Asynchronous direct-drive variable-frequency motor for high-heat-dissipation petroleum drilling machine pump

Abstract

The utility model relates to an asynchronous direct-drive variable-frequency motor for a high-heat-dissipation petroleum drilling machine pump, which relates to the technical field of motors and comprises a motor body, a heat dissipation fan is arranged in one end face of the motor body, the other end of the motor body is an air inlet end, and heat dissipation fins are uniformly distributed at the side end of the motor body in the circumferential direction at intervals. The heat dissipation fins extend in the length direction of the motor body, air channels are formed between the adjacent heat dissipation fins, a circle of heat dissipation air pipes are coaxially arranged at the end, away from the heat dissipation fan, of the motor body, and air blowing holes are formed in the side ends, aligned with the air channels, of the heat dissipation air pipes. The beneficial effects are that high-temperature air on the periphery of the motor body is blown away to ensure that the temperature on the periphery of the motor body does not continuously rise, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to an asynchronous direct-drive variable-frequency electric motor for a high-heat dissipation oil drilling rig pump. Background Art

[0002] Motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e. stator winding) to generate a rotating magnetic field and acts on the rotor (such as a squirrel cage closed aluminum frame) to form a magnetic electromotive force rotation torque. Motors are divided into DC motors and AC motors according to the power supply used.

[0003] During the use of the motor, due to the existence of motor loss, its temperature will continue to rise, and as the temperature rises, its loss will also increase accordingly. Conventional motors have two heat dissipation methods: one is to use a fan at one end to dissipate the hot air inside the motor, and the other is to dissipate heat through the cooling fins of the motor housing. However, the heat dissipated by the cooling fins of the motor housing condenses around the motor, forming a high temperature area. At this time, when the fan is discharging the hot air inside the motor, the temperature of the introduced air will also be high, which is not conducive to the cooling of the motor. Therefore, if the motor cannot be cooled well, it is easy to cause the motor's efficiency to decrease; in serious cases, it may even affect the life of the motor. 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 an asynchronous direct-drive variable frequency motor for a high heat dissipation oil drilling rig pump, which solves the technical problem of poor heat dissipation effect 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] The utility model embodiment provides an asynchronous direct-drive variable-frequency motor for a high-heat dissipation oil drilling rig pump, comprising a motor body, a cooling fan being built into one end face of the motor body, the other end of the motor body being an air inlet end, cooling fins being evenly arranged at intervals in the circumferential direction on the side end of the motor body, the cooling fins extending along the length direction of the motor body, and air ducts being formed between adjacent cooling fins, a circle of cooling air ducts being coaxially arranged on one end of the motor body away from the cooling fan, and air blowing holes being opened on the side ends of the cooling air ducts aligned with each of the air ducts.

[0009] The embodiment of the utility model proposes an asynchronous direct-drive variable-frequency motor for a high-heat dissipation oil drilling rig pump. When the motor is working, the cooling fan works, and air enters along the air inlet end of the motor body and is blown out through the cooling fan, thereby cooling the inside of the motor body. At the same time, the temperature inside the motor body is directly transferred to the external cooling fins. At this time, the cooling air duct blows air into the air duct through the blowing holes, thereby taking away the heat on the cooling fins, thereby achieving double heat dissipation, improving the heat dissipation effect, and extending the service life of the motor.

[0010] Optionally, a heat-conducting ring is coaxially arranged on the outer peripheral side of the motor body away from one end of the heat dissipation air duct, the diameter of the heat-conducting ring close to the end of the heat dissipation air duct is larger than the diameter of the end away from the heat dissipation air duct, and an annular channel for air to pass through is formed between the heat-conducting ring and the motor body, and the heat-conducting ring guides the hot air in the air duct to the end of the heat dissipation fan away from the motor body.

[0011] By arranging a heat-conducting ring at one end of the motor body, an annular channel is formed between the heat-conducting ring and the motor body. When the heat dissipation air duct blows air through the blowing hole, the heat emitted by the heat dissipation fins will be vertically blown into the annular channel inside the heat-conducting ring, and finally blown away from the motor body through the heat dissipation fan, thereby ensuring that the temperature around the motor body will not continue to rise, thereby ensuring the heat dissipation effect.

[0012] Optionally, the heat conductive ring is coaxially rotatably connected to the motor body, and a plurality of cyclone blades are provided on the inner wall of the heat conductive ring. The cyclone blades drive air to circulate along the annular channel as the heat conductive ring rotates.

[0013] By rotating the heat-conducting ring to connect to the motor body and arranging cyclone blades on the inner wall of the heat-conducting ring, when the heat-conducting ring rotates, the cyclone blades can suck the air on the side of its own air inlet end, and then cooperate with the blowing of the heat dissipation air duct to more timely and quickly extract the high-temperature air outside the motor body, thereby improving the heat dissipation effect.

[0014] Optionally, a plurality of support rods are vertically arranged on the peripheral side ends of the motor body, and a rotating ring track coaxial with the motor body is supported at one end of the support rods away from the motor body, the heat conductive ring is rotatably connected to the rotating ring track, and there are two groups of cyclone blades which are respectively located on both sides of the rotating ring track.

[0015] By arranging support rods and rotating ring rails at the lateral ends of the motor body, the heat conductive ring can rotate more smoothly without affecting the air circulation. At the same time, the cyclone blades are divided into two groups and are located on both sides of the rotating ring rail. One group of cyclone blades is located in the area where the cooling fan blows air, so that the heat conductive ring can be driven to rotate by the blowing of the cooling fan, which is more convenient.

[0016] Optionally, wind screen holes are evenly spaced around the outer side ends of the heat dissipation air duct, and the wind screen holes are long and narrow along the surrounding direction of the heat dissipation air duct. A plurality of the wind screen holes blow air outwards to form an air wall that isolates the air inlet end of the motor body.

[0017] By opening a narrow wind screen hole at the outer side end of the heat dissipation air duct, the wind screen hole can blow out an air wall when the heat dissipation air duct blows air. When multiple wind screen holes exhaust air together, an air wall will be formed on the side of the motor body, thereby separating the air inlet end of the motor body from the motor body, ensuring that the air inlet end of the motor body is not affected by the heat emitted by the motor, making the temperature of the air drawn into the motor body lower, thereby further improving the cooling effect.

[0018] Optionally, air inlet pipes are extended outward from both side ends of the heat dissipation air duct, the air inlet pipes are trumpet-shaped, and an exhaust fan is provided at the air inlet end of the air inlet pipe.

[0019] By arranging air inlet pipes at both ends of the heat dissipation air duct and arranging an exhaust fan at one end of the air inlet pipe, the air in the heat dissipation air duct is sucked into the heat dissipation air duct from a position far away from the motor body by the exhaust fan, thereby avoiding the air sucked into the heat dissipation air duct being high-temperature air around the motor body, thereby improving the heat dissipation effect.

[0020] Optionally, the air inlet direction of the exhaust fan is in the same direction as the air inlet end of the motor body.

[0021] By setting the air inlet end of the exhaust fan to be oriented in the same direction as the air inlet end of the motor body, the probability of the air entering the heat dissipation air duct being high-temperature air is further reduced, thereby improving the heat dissipation effect.

[0022] Optionally, a circle of heat insulation pad is provided between the heat dissipation duct and the motor body.

[0023] By setting a circle of heat insulation pads between the heat dissipation duct and the motor body, the heat of the motor body is reduced from being directly transferred to the heat dissipation duct, and the probability of the air temperature blown out of the heat dissipation duct rising is reduced, thereby ensuring the heat dissipation effect.

[0024] Optionally, two support plates are spaced apart at the lower side of the motor body along the length direction of the heat dissipation fins, the two support plates are perpendicular to the side of the motor body, and a base is horizontally arranged at one end of the two support plates away from the motor body.

[0025] By arranging two support plates and a base at the lower end of the motor body, a gap is formed between the two support plates, so that the surrounding side of the motor body can be cooled by the cooling fins, thereby facilitating heat dissipation and further improving heat dissipation efficiency.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the utility model are as follows: the asynchronous direct-drive variable-frequency motor for a high-heat dissipation oil drilling rig pump of the utility model, when the motor is working, the cooling fan is working, air enters along the air inlet end of the motor body and is blown out through the cooling fan, thereby cooling the inside of the motor body, and at the same time, the temperature inside the motor body is directly transferred to the external cooling fins. At this time, the cooling air duct blows air into the air duct through the blowing hole, thereby taking away the heat on the cooling fins, thereby achieving double heat dissipation, improving the heat dissipation effect, and thereby extending the service life of the motor. 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 It is a cross-sectional view of an embodiment of the utility model.

[0030] [Description of Reference Numerals]

[0031] 1. Motor body; 11. Cooling fins; 12. Air duct; 13. Support plate; 14. Base; 2. Cooling fan; 3. Air inlet end; 4. Cooling air duct; 41. Blowing hole; 42. Heat insulation pad; 43. Air inlet duct; 44. Exhaust fan; 45. Wind screen hole; 5. Heat conduction ring; 51. Support rod; 52. Rotating ring track; 53. Annular channel; 54. Cyclone blades. DETAILED DESCRIPTION

[0032] 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.

[0033] The embodiment of the utility model proposes an asynchronous direct-drive variable-frequency motor for a high-heat dissipation oil drilling rig pump. When the motor is working, the cooling fan works, and air enters along the air inlet end of the motor body and is blown out through the cooling fan, thereby cooling the inside of the motor body. At the same time, the temperature inside the motor body is directly transferred to the external cooling fins. At this time, the cooling air duct blows air into the air duct through the blowing holes, thereby taking away the heat on the cooling fins, thereby achieving double heat dissipation, improving the heat dissipation effect, and extending the service life of the motor.

[0034] 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.

[0035] Reference Figure 1 and Figure 2 An asynchronous direct-drive variable-frequency motor for a high-heat dissipation oil drilling rig pump comprises a motor body 1, a cooling fan 2 is built into one end face of the motor body 1, the other end of the motor body 1 is an air inlet end 3, and the side end of the motor body 1 is integrally formed with cooling fins 11 that are evenly spaced in the circumferential direction. The cooling fins 11 extend along the length direction of the motor body 1, and air ducts 12 are formed between adjacent cooling fins 11.

[0036] A circle of heat dissipation duct 4 is coaxially fixed to the end of the motor body 1 away from the heat dissipation fan 2 by bolts, and a blowing hole 41 is formed on the side end of the heat dissipation duct 4 aligned with each air duct 12. The heat dissipation duct 4 blows air into the air duct 12 through the blowing hole 41, thereby taking away the heat on the heat dissipation fins 11, and cooperates with the heat dissipation fan 2 to achieve double heat dissipation and improve the heat dissipation effect.

[0037] A circle of heat insulation pad 42 is sandwiched between the heat dissipation duct 4 and the motor body 1, thereby reducing the direct transfer of heat from the motor body 1 to the heat dissipation duct 4 and reducing the probability of the temperature of the air blown out of the heat dissipation duct 4 rising.

[0038] Air inlet pipes 43 extend outward from both side ends of the heat dissipation air duct 4, and the air inlet pipes 43 are connected to the heat dissipation air duct 4. The air inlet pipes 43 are trumpet-shaped, and an exhaust fan 44 is embedded and fixed in the air inlet end 3 of the air inlet pipe 43. The air inlet direction of the exhaust fan 44 is the same as the air inlet end 3 of the motor body 1. The air in the heat dissipation air duct 4 is sucked in from a position far away from the motor body 1 by the exhaust fan 44, thereby avoiding the air sucked into the heat dissipation air duct 4 being high-temperature air around the motor body 1, so as to improve the heat dissipation effect.

[0039] Wind screen holes 45 are evenly spaced at the circumferential side ends of the heat dissipation air duct 4. The wind screen holes 45 are long and narrow along the circumferential direction of the heat dissipation air duct 4. A plurality of wind screen holes 45 blow air outward to form an air wall that isolates the air inlet end 3 of the motor body 1. When the plurality of wind screen holes 45 discharge air together, an air wall will be formed on the circumferential side of the motor body 1, thereby separating the air inlet end 3 of the motor body 1 from the motor body 1, ensuring that the air inlet end 3 of the motor body 1 is not affected by the heat emitted by the motor.

[0040] The motor body 1 is coaxially rotatably connected with a heat conducting ring 5 on the outer peripheral side away from the end of the heat dissipation air duct 4. A plurality of vertically welded support rods 51 are evenly spaced circumferentially distributed on the circumferential side of the motor body 1. A rotating ring track 52 coaxial with the motor body 1 is supported at one end of the plurality of support rods 51 away from the motor body 1. The heat conducting ring 5 is rotatably sleeved on the rotating ring track 52 through a bearing. The diameter of the end of the heat conducting ring 5 close to the heat dissipation air duct 4 is larger than the diameter of the end away from the heat dissipation air duct 4 and forms a cone barrel. An annular channel 53 for air to pass through is formed between the heat conducting ring 5 and the motor body 1. Two groups of cyclone blades 54 are welded to the inner wall of the heat conducting ring 5. The two groups of cyclone blades 54 are respectively located on both sides of the rotating ring track 52. Each group of cyclone blades 54 includes a plurality of cyclone blades evenly spaced circumferentially distributed on the heat conducting ring 5. The cyclone blades 54 drive air to flow along the annular channel 53 to the end of the heat dissipation fan 2 away from the motor body 1 as the heat conducting ring 5 rotates. The cyclone blades 54 can suck the air on one side of their own air inlet end 3, and then cooperate with the blowing of the heat dissipation air duct 4 to more promptly and quickly extract the high-temperature air on the outside of the motor body 1. At the same time, the cyclone blades 54 are divided into two groups and are located on both sides of the rotating ring track 52. One group of cyclone blades 54 is located in the blowing area of ​​the heat dissipation fan 2, so that the heat conductive ring 5 can be driven to rotate by the blowing of the heat dissipation fan 2, which is more convenient.

[0041] Two support plates 13 are welded at intervals along the length direction of the heat dissipation fins 11 at the lower side of the motor body 1. The two support plates 13 are perpendicular to the side of the motor body 1. A base 14 is welded horizontally at one end of the two support plates 13 away from the motor body 1. A gap is formed between the two support plates 13, so that the surrounding side of the motor body 1 can be cooled by the heat dissipation fins 11 and the heat dissipation duct 4.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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. An asynchronous direct-drive variable frequency motor for a high heat dissipation oil drilling rig pump, characterized in that: The invention comprises a motor body (1), wherein a cooling fan (2) is built into one end surface of the motor body (1), and the other end of the motor body (1) is an air inlet end (3). The side end of the motor body (1) is circumferentially evenly spaced with cooling fins (11), the cooling fins (11) extend along the length direction of the motor body (1), and air ducts (12) are formed between adjacent cooling fins (11). A circle of cooling air ducts (4) is coaxially arranged at one end of the motor body (1) away from the cooling fan (2), and the side end of the cooling air duct (4) is aligned with each of the air ducts (12) and is provided with blowing holes (41).

2. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 1, characterized in that: The motor body (1) is coaxially provided with a heat-conducting ring (5) on the outer peripheral side of an end away from the heat dissipation duct (4); the diameter of the heat-conducting ring (5) at the end close to the heat dissipation duct (4) is larger than the diameter of the end away from the heat dissipation duct (4); an annular channel (53) for air to pass through is formed between the heat-conducting ring (5) and the motor body (1); the heat-conducting ring (5) guides the hot air in the air duct (12) to the end of the heat dissipation fan (2) away from the motor body (1).

3. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling pump according to claim 2, characterized in that: The heat-conducting ring (5) is coaxially rotatably connected to the motor body (1); a plurality of cyclone blades (54) are provided on the inner wall of the heat-conducting ring (5); and the cyclone blades (54) drive air to circulate along the annular channel (53) as the heat-conducting ring (5) rotates.

4. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 3, characterized in that: A plurality of support rods (51) are vertically arranged at the peripheral end of the motor body (1); one end of the plurality of support rods (51) away from the motor body (1) supports a rotating ring track (52) coaxial with the motor body (1); the heat conductive ring (5) is rotatably connected to the rotating ring track (52); and there are two groups of cyclone blades (54) which are respectively located on both sides of the rotating ring track (52).

5. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 1, characterized in that: Wind screen holes (45) are evenly spaced in the circumferential direction at the outer side end of the heat dissipation air duct (4), and the wind screen holes (45) are narrow and long along the circumferential direction of the heat dissipation air duct (4). The plurality of wind screen holes (45) blow air outward to form an air wall that isolates the air inlet end (3) of the motor body (1).

6. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 1, characterized in that: Air inlet pipes (43) are extended outwardly from both side ends of the heat dissipation air duct (4), the air inlet pipe (43) is trumpet-shaped, and an exhaust fan (44) is provided at the air inlet end (3) of the air inlet pipe (43).

7. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling pump according to claim 6, characterized in that: The air inlet direction of the exhaust fan (44) is in the same direction as the air inlet end (3) of the motor body (1).

8. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 1, characterized in that: A circle of heat insulation pad (42) is provided between the heat dissipation duct (4) and the motor body (1).

9. The asynchronous direct-drive variable frequency motor for high heat dissipation oil drilling rig pump according to claim 1, characterized in that: Two support plates (13) are arranged at intervals at the lower side end of the motor body (1) along the length direction of the heat dissipation fins (11); the two support plates (13) are perpendicular to the side ends of the motor body (1); and bases (14) are horizontally arranged at one end of the two support plates (13) away from the motor body (1).

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