CN215897524U - Air-cooled frequency conversion speed regulation all-in-one machine - Google Patents

Abstract

The utility model provides an air-cooled variable-frequency speed regulation all-in-one machine which comprises a motor, a frequency converter, a wire inlet box and a cooling fan, wherein the frequency converter and the cooling fan are arranged on the top of the motor and are respectively positioned on two sides of a vertical plane where a rotating shaft of the motor is positioned, an air inlet and an air outlet are arranged on a shell of the cooling fan, and the air inlet of the cooling fan is connected with the air outlet of the motor. The air-cooled variable-frequency speed regulation integrated machine realizes high integration of the motor part and the variable-frequency part, improves the space utilization rate, adopts the cooling fan to carry out air-cooled cooling on the motor, can avoid using excessive equipment, has light weight, small occupied area and compact structure, and has the advantages that the size of the motor in the axial direction can be correspondingly reduced when the frequency converter and the cooling fan are positioned at two sides of the vertical plane where the rotating shaft of the motor is positioned, thereby being beneficial to realizing the flat design of the motor and improving the universality on a well cementing truck with limited accommodating space (limited vehicle width).

Description

Air-cooled frequency conversion speed regulation all-in-one machine

Technical Field

The utility model relates to the technical field of motors, in particular to an air-cooled variable-frequency speed regulation all-in-one machine.

Background

Currently, in the oil drilling industry, as a power source for drilling, more and more electric driving devices (generally, a variable frequency speed control all-in-one machine) are required. Aiming at diversification of petroleum equipment and broadening of rotating speed range, higher requirements are put forward for electric driving equipment. In space, the equipment density of an oil drilling area is high, the space is limited, the requirement on the space utilization rate is high, the frequency conversion and speed regulation all-in-one machine is required to be highly integrated, the space occupation is reduced as much as possible, and the requirement on the space utilization rate is higher especially for equipment which needs two or more frequency conversion and speed regulation all-in-one machines to drive together.

Oil field well cementation equipment is frequently used in the oil drilling industry, the oil field well cementation equipment needs to be frequently moved according to the change of the geographic positions of different oil fields, and the well cementation equipment is usually installed on a well cementation vehicle so as to be frequently moved along with the vehicle. Since the cementing truck has limited load carrying capacity and accommodation space (limited vehicle width), the cementing equipment and its electric drive equipment should occupy as little space as possible and have a light weight, avoiding the addition of unnecessary equipment.

In the prior art, the variable-frequency speed regulation all-in-one machine generally uses a water cooling mode to cool a motor part, a water cooling system needs external water supply equipment, and a large number of required parts result in heavy weight, large floor area and low degree of compact structure of the all-in-one machine, the requirements on space and load of a well cementing truck are high, the universality of the equipment is poor, and the number of machines to be prepared is large.

Based on this, need urgently to improve current variable frequency speed governing all-in-one to reduce the space as far as and occupy, thereby improve oilfield equipment commonality, reduce and prepare quick-witted quantity, make equipment utilization energy-conserving, high-efficient.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides an air-cooled variable-frequency speed-regulating all-in-one machine, which solves the problem that the existing variable-frequency speed-regulating all-in-one machine occupies a large space.

In order to solve the technical problems, the utility model adopts the following technical scheme: an air-cooled variable-frequency speed regulation all-in-one machine comprises:

the shell of the motor is provided with an air inlet and an air outlet;

the frequency converter is provided with an explosion-proof shell, and is arranged on the top of the motor and electrically connected with the motor;

the wire inlet box is arranged on the frequency converter and positioned below the frequency converter, and the wire inlet box is electrically connected with the frequency converter;

the cooling fan is arranged on the top of the motor, an air inlet and an air outlet are formed in a shell of the cooling fan, and the air inlet of the cooling fan is connected with the air outlet of the motor;

the frequency converter and the cooling fan are respectively positioned on two sides of a vertical plane where a rotating shaft of the motor is positioned.

The wire inlet box and the frequency converter are positioned on the same side of a vertical plane where a rotating shaft of the motor is positioned.

And the air inlet of the motor is positioned on the bottom plate of the shell of the motor.

The pivot of motor is the hollow structure that both ends run through, wear to be equipped with the shaft coupling in the pivot, the one end department of pivot is equipped with the torque transmission apron, the torque transmission apron with the pivot reaches shaft coupling fixed connection, in order to incite somebody to action the moment of torsion transmission of motor extremely the shaft coupling.

The motor end cover is installed to the other end of pivot, install annular end cover fin rather than coaxial on the front of motor end cover, the end cover fin includes the base plate and establishes fin on the base plate two sides of the face back.

The motor end cover is provided with a plurality of hollow parts distributed along the circumferential direction, a plurality of positions are formed on the heat dissipation fins on the back of the substrate in a one-to-one correspondence mode with the plurality of hollow parts, and the heat dissipation fins on the back of the substrate extend to the back side of the motor end cover through the hollow parts.

And the air outlet of the cooling fan is provided with a protective device.

And a drain hole close to the air outlet of the cooling fan is arranged on the bottom plate of the shell of the cooling fan.

The flameproof shell of the frequency converter comprises at least two parts which are arranged up and down, and the two adjacent parts are detachably connected into a whole.

A water cooling plate is arranged on the frequency converter, and a cooling water channel is formed in the water cooling plate;

forced air cooling Variable Frequency Speed Governing (VFSG) all-in-one still includes the converter radiator, the converter radiator includes:

a heat sink housing;

a container which is disposed in the radiator housing and contains a coolant;

pipelines for circulating cooling liquid and respectively communicated with the cooling water channels in the water-cooling plate;

and the circulating pump is arranged on the pipeline and used for providing power for the circulation of the cooling liquid.

Compared with the prior art, the utility model has the following advantages and positive effects:

1. according to the air-cooled variable-frequency speed-regulating all-in-one machine, the frequency converter is arranged on the top of the motor, and the junction box is arranged on the frequency converter, so that the variable-frequency speed-regulating all-in-one machine is formed, the high integration of the motor part and the variable-frequency part is realized, the space occupation is reduced as much as possible, and the space utilization rate is improved;

2. the air-cooled variable-frequency speed regulation all-in-one machine adopts the air-cooled mode of the cooling fan to cool the motor, and compared with the existing water-cooled mode, the air-cooled variable-frequency speed regulation all-in-one machine can avoid using excessive equipment, so that the air-cooled variable-frequency speed regulation all-in-one machine has the advantages of light weight, small occupied area and compact structure, and when the air-cooled variable-frequency speed regulation all-in-one machine is applied to oil field well cementing equipment, the whole occupied area of the well cementing equipment can be reduced, the loading and loading requirements of a well cementing truck are met, the universality is improved, and the number of spare machines is reduced;

3. according to the air-cooled variable-frequency speed-regulating all-in-one machine, the frequency converter and the cooling fan are respectively positioned on two sides of a vertical plane where a rotating shaft of the motor is positioned, so that the size of the motor in the axial direction can be correspondingly reduced, the motor is favorably designed in a flattened mode, when the air-cooled variable-frequency speed-regulating all-in-one machine is loaded on a well cementation vehicle along with well cementation equipment, the motor is axially parallel to the vehicle width direction of the well cementation vehicle, the size of the motor in the axial direction is reduced, the universality of the air-cooled variable-frequency speed-regulating all-in-one machine on the well cementation vehicle with a limited accommodating space (limited vehicle width) is further improved, and the air-cooled variable-frequency speed-regulating all-in-one machine is particularly suitable for equipment which needs to be driven by a plurality of all-in-one machines together;

4. according to the air-cooled variable-frequency speed regulation all-in-one machine, the size of the motor in the axial direction can be correspondingly reduced, so that the air-cooled heat dissipation air duct is short in flow, and the heat dissipation of the motor is facilitated.

Drawings

FIG. 1 is a perspective view of an air-cooled variable-frequency speed-regulating all-in-one machine of the utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a perspective view of two air-cooled variable-frequency speed-regulating integrated machines of the present invention arranged in parallel along the axial direction of the motor;

FIG. 4 is a perspective view of a cooling fan of the air-cooled variable-frequency speed-regulating all-in-one machine of the utility model;

FIG. 5 is a perspective view of another view angle of the cooling fan of the air-cooled variable-frequency speed-regulating all-in-one machine of the utility model;

FIG. 6 is a schematic sectional view of the air-cooled variable-frequency speed-regulating all-in-one machine of the present invention;

FIG. 7 is a front view of a motor end cover of the air-cooled variable-frequency speed-regulating all-in-one machine of the utility model;

FIG. 8 is a cross-sectional view A-A of FIG. 7;

FIG. 9 is a side view of an end cover cooling fin of the air-cooled variable frequency speed control all-in-one machine of the utility model;

FIG. 10 is a view from the direction B of FIG. 9;

fig. 11 is a view in the direction C of fig. 9.

Reference numerals: 10-a motor; 11-a housing; 12-an air inlet; 13-air outlet; 14-a rotating shaft; 20-a frequency converter; 21-an explosion-proof shell; 30-a wire inlet box; 40-a cooling fan; 41-a housing; 42-air inlet; 43-air outlet; 44-protective plate; 45-water drainage holes; 50-a coupler; 60-torque transmission cover plate; 70-motor end cover; 71-a hollowed-out portion; 72-reinforcing ribs; 80-end cap fins; 81-a substrate; 82-substrate front side heat dissipation fins; 83-substrate backside cooling fins; 90-frequency converter radiator.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and fig. 2, the air-cooled variable-frequency speed-regulating all-in-one machine of the present embodiment includes a motor 10, a frequency converter 20, an inlet box 30, and a cooling fan 40. Wherein, the shell 11 of the motor 10 is provided with an air inlet 12 and an air outlet 13; the frequency converter 20 is provided with an explosion-proof shell 21, and the frequency converter 20 is arranged on the top of the motor 10 and is electrically connected with the motor 10; the wire inlet box 30 is arranged on the frequency converter 20 and is positioned below the frequency converter 20, and the wire inlet box 30 is electrically connected with the frequency converter 20; the cooling fan 40 is arranged on the top of the motor 10, an air inlet 42 and an air outlet 43 are arranged on a shell 41 of the cooling fan 40, and the air inlet 42 of the cooling fan 40 is connected with the air outlet 13 of the motor 10; meanwhile, the inverter 20 and the cooling fan 40 are respectively located at both sides of a vertical plane (a dotted line a in fig. 2 indicates the vertical plane in which the rotating shaft 14 is located) in which the rotating shaft 14 of the motor 10 is located.

Specifically, as shown in fig. 1 and 2, the inverter 20 may be fixed on the top of the motor 10 by screws, and motor leads are introduced from the motor 10 into the inverter 20 through the lead box 30. The inlet box 30 may be fixed to the bottom plate of the inverter 20, and the portion connected therebetween may be sealed by a sealing tape. The cooling fan 40 is used for cooling the motor 10, an air inlet 42 of the cooling fan 40 is in butt joint communication with an air outlet 13 reserved at the top of the motor 10, the cooling fan 40 sucks air during operation, air outside the motor 10 enters the motor 10 through the air inlet 12, passes through a stator part and a rotor part inside the motor 10, and is finally discharged from an air outlet 43 of the cooling fan 40 through the air outlet 13 of the motor 10, so that the purpose of cooling the motor 10 is achieved. Taking the axial direction of the rotating shaft 10 as the front-rear direction as an example of the view shown in fig. 1 and 2, the inverter 20 and the cooling fan 40 are disposed right and left on the top of the motor 10, not front-rear in the axial direction parallel to the rotating shaft 10.

In the air-cooled variable-frequency speed-regulating all-in-one machine, the frequency converter is arranged on the top of the motor, so that the high integration of the motor part and the variable-frequency part is realized, the space occupation is reduced as much as possible, and the space utilization rate is improved; compared with the existing water cooling mode, the motor is cooled by air by the cooling fan, so that the use of excessive equipment can be avoided, the weight is light, the occupied area is small, the structure is compact, when the motor is applied to oil field well cementation equipment, the whole occupied area of the well cementation equipment can be reduced, the loading and loading requirements of a well cementation vehicle are met, the universality is improved, and the number of spare machines is reduced; the frequency converter and the cooling fan are respectively positioned at two sides of a vertical plane where a rotating shaft of the motor is positioned, so that the size of the motor in the axial direction (namely the front and back directions shown in figures 1 and 2) can be correspondingly reduced, the motor flat design is favorably realized, and because the axial direction of the motor is parallel to the vehicle width direction of the well cementation vehicle when the air-cooled variable-frequency speed regulation all-in-one machine is loaded on the well cementation vehicle along with the well cementation equipment, the size (thickness) of the axial direction of the motor is reduced, the universality of the air-cooled variable-frequency speed regulation all-in-one machine on the well cementation vehicle with a limited accommodating space (limited vehicle width) is further improved, and the air-cooled variable-frequency speed regulation all-in-one machine is particularly suitable for equipment needing to be driven by a plurality of all-in-one machines, namely, the state when two air-cooled variable-frequency speed regulation all-in-one machine are arranged in parallel along the axial direction of the motor 10 as shown in figure 3; meanwhile, the size of the motor in the axial direction is correspondingly reduced, so that the air-cooling heat dissipation air duct is short in flow, and the heat dissipation of the motor is facilitated.

Further, the inlet box 30 and the frequency converter 20 are located on the same side of a vertical plane of the rotating shaft 14 of the motor 10, so as to electrically connect the motor 10 and the frequency converter 20. Specifically, in the present embodiment, the junction box 30 is fixed on the bottom plate of the frequency converter 20, and the idle space below the frequency converter 20 is utilized to further improve the space utilization rate.

As shown in fig. 1 and fig. 2, the air inlet 12 of the motor 10 is located on the bottom plate of the housing 11 of the motor 10, and the air outlet 13 thereof is located on the top plate of the housing 11 to be in butt joint communication with the air inlet 42 of the cooling fan 40, so that the hot air rising principle is met, and the heat dissipation effect of the motor 10 is improved.

The cooling fan 40 is preferably an explosion-proof fan to improve the explosion-proof requirement of the all-in-one machine, the orientation of the air outlet 43 is configured to enable the air outlet to be horizontally discharged to improve the smoothness of the air flow, at this time, in order to improve the protection effect on the cooling fan 40, rainwater, dust and the like are prevented from entering the cooling fan 40 from the air outlet 43 as much as possible, referring to fig. 4 and 5, in this embodiment, the air outlet 43 of the cooling fan 40 is provided with a protection device. Specifically, the protection device mainly comprises a protection plate 44, the top end of the protection plate 44 is hinged to the part of the shell 41 at the air outlet 43, and in a non-working state, the protection plate 44 naturally droops to shield the air outlet 43 so as to play a role in rain prevention and dust prevention; when the cooling fan 40 is in operation, the protection plate 44 is opened under the action of the outlet airflow of the air outlet 43, as shown in fig. 4 and 5, so that the outlet airflow flows out normally.

Of course, the protection device may also be a protection louver or a protection net disposed on the air outlet 43, which is not specifically limited in this embodiment.

Furthermore, the bottom plate of the housing 41 of the cooling fan 40 is provided with a water drainage hole 45 close to the air outlet 43, so that when rainwater or other impurities enter the housing 41 from the air outlet 43, the rainwater or other impurities can be discharged from the water drainage hole 45, and the protection effect on the cooling fan 40 is further improved.

In order to further reduce the weight of the whole machine, referring to fig. 6, in this embodiment, the rotating shaft 14 of the motor 10 is a hollow structure with two ends penetrating through, the coupling 50 penetrates through the rotating shaft 14, a torque transmission cover plate 60 is disposed at one end of the rotating shaft 14, the torque transmission cover plate 60 is fixedly connected with the rotating shaft 14 through screws, and meanwhile, the torque transmission cover plate 60 is also fixedly connected with the coupling 50 through screws so as to transmit the torque of the motor 10 to the coupling 50. The hollow rotating shaft 14 is beneficial to reducing the weight of the whole machine, and when the motor 10 works, the rotating shaft 14 rotates to drive the torsion transmission cover plate 60 to rotate, so that the coupling 50 is driven to rotate through the torsion transmission cover plate 60, and further, the speed reducer driving equipment such as oil field well cementation equipment works. The torque is transmitted to the coupler 50 through the torque transmission cover plate 60, the coupler 50 is in transmission connection with the rotating shaft 14 through the torque transmission cover plate 60, the torque output direction of the frequency conversion all-in-one machine can be changed by changing the output direction of the coupler 50, the frequency conversion all-in-one machines are arranged side by side, the same design of the frequency conversion all-in-one machine can be realized by enabling the output directions of the coupler 50 to be consistent, the use requirement can be guaranteed only by changing the final installation mode, the universality of equipment is improved, and the number of standby machines is reduced.

Referring to fig. 2, 7 to 11, the motor end cover 70 is mounted on the other end of the rotating shaft 14, and an annular end cover heat sink 80 is mounted on the front surface of the motor end cover 70 coaxially therewith, the end cover heat sink 80 including a base plate 81 and base plate front surface heat sink fins 82 provided on the front surface of the base plate 81 and base plate rear surface heat sink fins 83 on the rear surface. The motor 10 can be further cooled by installing the end cover heat sink 80 on the motor end cover 70.

Further, a plurality of hollow portions 71 arranged along the circumferential direction are formed on the motor end cover 70, a plurality of positions of the substrate back side heat dissipation fins 83 are arranged in one-to-one correspondence with the plurality of hollow portions 71, and the heat dissipation fins 83 on the back side of the substrate 81 extend to the back side of the motor end cover 70 through the hollow portions 71. The hollow portion 71 plays a role in reducing weight and assisting in heat dissipation, and the substrate back heat dissipation fins 83 extend to the back side of the motor end cover 70 through the hollow portion 71, that is, extend into the motor, so as to further improve the heat dissipation effect on the motor 10. Meanwhile, a plurality of reinforcing ribs 72 are formed on the motor end cover 70 to increase the structural strength thereof.

In this embodiment, as shown in fig. 1 to fig. 3, the partition casing 21 of the frequency converter 20 includes at least two parts disposed up and down, specifically, an upper casing part 21A and a lower casing part 21B, and the two adjacent parts are detachably connected into a whole by a screw or other means. The frequency converter 20 is divided into a plurality of blocks, and only the part needing to be maintained needs to be operated during later maintenance, so that the frequency converter is convenient to install and maintain later.

For cooling converter 20, wind cold variable frequency speed governing all-in-one still includes converter radiator 90 in this embodiment, and converter radiator 90 adopts prior art water-cooling radiator, and it includes radiator shell, holding ware, pipeline and circulating pump, and the holding ware is arranged in the radiator shell and is held the coolant liquid, and the pipeline is used for circulating cooling liquid, and the circulating pump is established on the pipeline, provides power for the circulation of coolant liquid, does not describe to this repeatedly. Be equipped with the water-cooling board on converter 20, seted up the cooling water course in the water-cooling board, the pipeline of converter radiator 90 and the cooling water course intercommunication in the water-cooling board to let in the coolant liquid in the water-cooling board, carry out circulative cooling to converter 20 under the effect of circulating pump.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The utility model provides an air-cooled Variable Frequency Speed Governing (VFSG) all-in-one which characterized in that includes:

the shell of the motor is provided with an air inlet and an air outlet;

the frequency converter is provided with an explosion-proof shell, and is arranged on the top of the motor and electrically connected with the motor;

the wire inlet box is arranged on the frequency converter and positioned below the frequency converter, and the wire inlet box is electrically connected with the frequency converter;

the cooling fan is arranged on the top of the motor, an air inlet and an air outlet are formed in a shell of the cooling fan, and the air inlet of the cooling fan is connected with the air outlet of the motor;

the frequency converter and the cooling fan are respectively positioned on two sides of a vertical plane where a rotating shaft of the motor is positioned.

2. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

the wire inlet box and the frequency converter are positioned on the same side of a vertical plane where a rotating shaft of the motor is positioned.

3. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

and the air inlet of the motor is positioned on the bottom plate of the shell of the motor.

4. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

the pivot of motor is the hollow structure that both ends run through, wear to be equipped with the shaft coupling in the pivot, the one end department of pivot is equipped with the torque transmission apron, the torque transmission apron with the pivot reaches shaft coupling fixed connection, in order to incite somebody to action the moment of torsion transmission of motor extremely the shaft coupling.

5. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 4,

the motor end cover is installed to the other end of pivot, install annular end cover fin rather than coaxial on the front of motor end cover, the end cover fin includes the base plate and establishes fin on the base plate two sides of the face back.

6. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 5,

the motor end cover is provided with a plurality of hollow parts distributed along the circumferential direction, a plurality of positions are formed on the heat dissipation fins on the back of the substrate in a one-to-one correspondence mode with the plurality of hollow parts, and the heat dissipation fins on the back of the substrate extend to the back side of the motor end cover through the hollow parts.

7. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

and the air outlet of the cooling fan is provided with a protective device.

8. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 7,

and a drain hole close to the air outlet of the cooling fan is arranged on the bottom plate of the shell of the cooling fan.

9. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

the flameproof shell of the frequency converter comprises at least two parts which are arranged up and down, and the two adjacent parts are detachably connected into a whole.

10. The air-cooled variable-frequency speed-regulating all-in-one machine as claimed in claim 1,

a water cooling plate is arranged on the frequency converter, and a cooling water channel is formed in the water cooling plate;

forced air cooling Variable Frequency Speed Governing (VFSG) all-in-one still includes the converter radiator, the converter radiator includes:

a heat sink housing;

a container which is disposed in the radiator housing and contains a coolant;

pipelines for circulating cooling liquid and respectively communicated with the cooling water channels in the water-cooling plate;

and the circulating pump is arranged on the pipeline and used for providing power for the circulation of the cooling liquid.

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