Novel frequency conversion explosion-proof motor

Abstract

The utility model discloses a novel frequency conversion explosion-proof motor, and relates to the technical field of explosion-proof motors. The explosion-proof device comprises an explosion-proof shell, a motor assembly, a control panel and a base, the motor assembly is fixed to one end of the inner wall of the explosion-proof shell, a plurality of heat dissipation rings are fixed to the peripheral side of the explosion-proof shell, the distances between the adjacent heat dissipation rings are equal, the control panel is fixed to the upper portion in the explosion-proof shell in a penetrating mode, and the base is arranged below the explosion-proof shell. The explosion-proof motor is provided with the explosion-proof shell, the motor assembly, the control panel and the base, so that the problems that when inert gas in the explosion-proof shell needs to be supplemented cannot be accurately determined when the explosion-proof motor is protected by the inert gas, and heat cannot be dissipated through the explosion-proof shell in time after the motor main body is heated are solved; the explosion-proof motor has the advantages that when inert gas needs to be supplemented in the explosion-proof shell can be conveniently and accurately determined when the explosion-proof motor is protected by the inert gas, and heat can be timely transferred to the explosion-proof shell for heat dissipation after the motor main body is heated.

Description

Technical Field

[0001] The utility model belongs to the technical field related to explosion-proof motors, and particularly relates to a novel variable-frequency explosion-proof motor. Background Technique

[0002] An explosion-proof motor is a type of motor that can be used in flammable and explosive places and does not generate electric sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and natural gas, petrochemical and chemical industries. In addition, they are also widely used in departments such as textiles, metallurgy, urban gas, transportation, grain and oil processing, papermaking, and medicine. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors, and other transmission machinery. However, it still has the following drawbacks in actual use:

[0003] In order to ensure that the motor is separated from the working environment during operation, an external explosion-proof enclosure is used to enclose the motor to ensure explosion-proof performance. At the same time, an inert gas is filled in the explosion-proof enclosure to ensure that the motor and the external operating environment are fully separated. During long-term use, the inert gas inside the explosion-proof motor will slowly leak, resulting in a decline in explosion-proof performance. It only needs to be replenished regularly, and it is impossible to accurately determine when the inert gas in the explosion-proof enclosure needs to be replenished;

[0004] When the explosion-proof motor of the explosion-proof type works, the motor generates heat and needs to be dissipated through the heat dissipation structure on the motor. However, when the explosion-proof motor with an explosion-proof enclosure dissipates heat, the internal heat is transferred to the explosion-proof enclosure relatively slowly, and the heat dissipation efficiency through the explosion-proof enclosure is not high enough, affecting the use performance of the internal motor body. Content of the Utility Model

[0005] The purpose of the utility model is to provide a novel variable-frequency explosion-proof motor. By setting an explosion-proof enclosure, a motor assembly, a control panel, and a base, the problems that when the explosion-proof motor uses inert gas protection, it is impossible to accurately determine when the inert gas in the explosion-proof enclosure needs to be replenished, and the motor body cannot dissipate heat in time through the explosion-proof enclosure after heating are solved.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model relates to a novel variable-frequency explosion-proof motor, which comprises an explosion-proof housing, a motor assembly, a control panel and a base. One end of the inner wall of the explosion-proof housing is fixedly provided with the motor assembly. A plurality of heat dissipation rings are fixedly arranged on the periphery of the explosion-proof housing, and the distance between adjacent heat dissipation rings is equal. The upper part inside the explosion-proof housing is fixedly penetrated with the control panel. A base is arranged below the explosion-proof housing. A fixing port is jointly and penetratingly opened at the upper part outside the explosion-proof housing and the heat dissipation rings. The control panel is fixed in the fixing port. One end of the explosion-proof housing is fixedly communicated with a shaft seal. The motor assembly includes a motor main body, a heat dissipation housing, heat dissipation fins and a driving shaft. The output end of the motor main body is fixedly provided with the driving shaft. The driving shaft is penetrated and inserted into the explosion-proof housing and extends out of the explosion-proof housing. The driving shaft is sleeved in the shaft seal. The motor main body is fixed on the inner wall of the explosion-proof housing. One end of the motor main body far away from the driving shaft is fixedly communicated with the heat dissipation housing. The heat dissipation fins are fixedly arranged in a circumferential array on the periphery of the motor main body and the heat dissipation housing. During operation, the motor assembly is fixed therein by the explosion-proof housing. After the motor assembly is powered on, it generates power to drive the driven equipment. The explosion-proof housing dissipates the heat generated by the motor assembly through the heat dissipation rings. The control panel fixes the air nozzle and the barometer therein. The explosion-proof housing and the motor assembly are supported on the support structure by the base. The explosion-proof housing fixes the control panel through the fixing port. The motor assembly generates power to drive the driving shaft to work through the motor main body. The motor main body and the heat dissipation housing dissipate heat through the heat dissipation fins.

[0008] Further, an air outlet net is fixedly arranged at one end of the heat dissipation housing far away from the motor main body. A micro fan is fixedly arranged on the inner wall of the heat dissipation housing. The heat dissipation housing allows inert gas to enter and exit through the air outlet net, and the micro fan enables the inert gas in the explosion-proof housing to circulate in the heat dissipation housing.

[0009] Further, an air nozzle is fixedly penetrated on one side of the horizontal center line inside the control panel, and a barometer is fixedly penetrated at a position symmetrical to the air nozzle inside the control panel. The control panel is connected with the output end connecting piece of the equipment for filling inert gas through the air nozzle, and the barometer measures the air pressure in the explosion-proof housing.

[0010] Further, four support rods are fixedly arranged in a rectangular array at the top of the base. The support rods are fixedly penetrated in the lower part inside the explosion-proof housing. The tops of all the support rods are fixedly arranged on the periphery of the motor main body, and the support rods are fixedly penetrated in the heat dissipation rings and the heat dissipation fins. The base supports the explosion-proof housing and the motor assembly on the external support structure through the support rods.

[0011] The utility model has the following beneficial effects:

[0012] The utility model solves the problem that when an explosion-proof motor uses inert gas protection, it is impossible to accurately determine when the inert gas in the explosion-proof enclosure needs to be replenished by setting an explosion-proof enclosure, a motor assembly, a control panel and a base. During the working process, observe the barometer, and the barometer shows the air pressure in the explosion-proof enclosure. When the air pressure in the explosion-proof enclosure drops below 1.2 times the standard atmospheric pressure, connect the connector for filling inert gas to the air nozzle, and then immediately fill the inert gas into the explosion-proof enclosure, and fill the air pressure in the explosion-proof enclosure to more than 1.5 times the atmospheric pressure, maintaining the air pressure in the explosion-proof enclosure greater than the atmospheric pressure, so that when working, it is convenient and accurate to determine when the inert gas in the explosion-proof enclosure needs to be replenished.

[0013] The utility model solves the problem that the motor body in the explosion-proof motor cannot be cooled in time through the explosion-proof enclosure by setting an explosion-proof enclosure and a motor assembly. When the micro fan is powered on and working, the inert gas filled in the explosion-proof enclosure circulates through the air outlet net inside the motor assembly and the explosion-proof enclosure, and the heat generated inside the motor body is taken away through the circulation. The motor body and the heat dissipation shell dissipate heat in the inert gas in the explosion-proof enclosure through the heat dissipation fins. At the same time, through the circulation of the inert gas, the heat is transferred to the explosion-proof enclosure and dissipated through the heat dissipation ring on the explosion-proof enclosure. Therefore, after the motor body in the explosion-proof motor generates heat, it can be cooled conveniently and quickly through the explosion-proof enclosure, ensuring the operating state of the motor body. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a three-dimensional sectional view of a partial structure of a new type of variable-frequency explosion-proof motor;

[0016] Figure 2 It is a three-dimensional rear view structure of the explosion-proof enclosure;

[0017] Figure 3 It is a three-dimensional structure diagram of the motor assembly;

[0018] Figure 4 It is a three-dimensional rear view structure of the motor assembly;

[0019] Figure 5 It is a three-dimensional structure diagram of the heat dissipation shell;

[0020] Figure 6 It is a three-dimensional structure diagram of the control panel;

[0021] Figure 7 It is a three-dimensional structure diagram of the base.

[0022] Reference numerals:

[0023] 1. Flameproof enclosure; 101. Heat dissipation ring; 102. Fixing port; 103. Shaft seal; 2. Motor assembly; 201. Motor main body; 202. Heat dissipation housing; 2021. Air outlet net; 2022. Micro fan; 203. Heat dissipation fins; 204. Driving shaft; 3. Control panel; 301. Air nozzle; 302. Barometer; 4. Base; 401. Support rod. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. Specific embodiments

[0025] Please refer to Figure 1-7 , the present utility model is a new type of variable-frequency explosion-proof motor, including a flameproof enclosure 1, a motor assembly 2, a control panel 3 and a base 4. One end of the inner wall of the flameproof enclosure 1 is fixedly provided with the motor assembly 2. The flameproof enclosure 1 fixes the motor assembly 2 therein and fills inert gas inside to prevent the gas in the external environment of the flameproof enclosure 1 from entering. After the motor assembly 2 is powered on, it generates power to drive the working equipment. A plurality of heat dissipation rings 101 are fixedly arranged on the periphery of the flameproof enclosure 1, and the distance between adjacent heat dissipation rings 101 is equal. The heat in the flameproof enclosure 1 is dissipated through the heat dissipation rings 101. A control panel 3 is fixedly penetrated and arranged in the upper part of the flameproof enclosure 1. The air pressure in the flameproof enclosure 1 is controlled through the control panel 3, so that the pressure in the flameproof enclosure 1 is always positive compared with the atmosphere, ensuring the explosion-proof performance of the motor. A base 4 is arranged below the flameproof enclosure 1, and the base 4 supports the flameproof enclosure 1 on the ground.

[0026] Specifically, a fixing port 102 is commonly penetrated and opened in the upper parts of the outer sides of the flameproof enclosure 1 and the heat dissipation ring 101, and the control panel 3 is fixed in the fixing port 102. One end of the flameproof enclosure 1 is fixedly communicated with a shaft seal 103. The control panel 3 is fixed to the flameproof enclosure 1 through the fixing port 102, and the driving shaft 204 at the output end of the motor main body 201 is movably connected therein through the shaft seal 103, closing the gap between the flameproof enclosure 1 and the driving shaft 204.

[0027] Further, the motor assembly 2 includes a motor main body 201, a heat dissipation shell 202, heat dissipation fins 203, and a drive shaft 204. A drive shaft 204 is fixed to the output end of the motor main body 201. The drive shaft 204 is inserted through and extends out of the explosion-proof enclosure 1. The drive shaft 204 is sleeved in the shaft seal 103. The motor main body 201 is fixed to the inner wall of the explosion-proof enclosure 1. A heat dissipation shell 202 is fixedly connected to one end of the motor main body 201 away from the drive shaft 204. Heat dissipation fins 203 are fixedly arranged in a circular array on the circumferences of the motor main body 201 and the heat dissipation shell 202. The motor assembly 2 generates power through the motor main body 201 to drive the drive shaft 204 to rotate. The drive shaft 204 is connected to an external drive device to transmit the power generated by the motor main body 201 to the driven device. The motor main body 201 and the heat dissipation shell 202 dissipate heat in the explosion-proof enclosure 1 through the heat dissipation fins 203.

[0028] Further, an air outlet net 2021 is fixed to one end of the heat dissipation shell 202 away from the motor main body 201. A micro fan 2022 is fixed to the inner wall of the heat dissipation shell 202. When the micro fan 2022 is powered on, the inert gas filled in the explosion-proof enclosure 1 circulates through the air outlet net 2021 in the motor assembly 2 and the explosion-proof enclosure 1 to take away the heat generated in the motor main body 201 through the circulation.

[0029] The operation process of this embodiment is as follows: During operation, the micro fan 2022 and the motor main body 201 are powered on. When the motor main body 201 is powered on, it generates power to drive the drive shaft 204 to rotate. The drive shaft 204 is connected to an external drive device to transmit the power generated by the motor main body 201 to the driven device. When the micro fan 2022 is powered on, the inert gas filled in the explosion-proof enclosure 1 circulates through the air outlet net 2021 in the motor assembly 2 and the explosion-proof enclosure 1 to take away the heat generated in the motor main body 201 through the circulation. The motor main body 201 and the heat dissipation shell 202 dissipate heat in the inert gas in the explosion-proof enclosure 1 through the heat dissipation fins 203. At the same time, through the circulation of the inert gas, the heat is transferred to the explosion-proof enclosure 1 and dissipated through the heat dissipation ring 101 on the explosion-proof enclosure 1. Specific Embodiment

[0030] Please refer to Figure 1 、 2 6, 7. On the basis of the first specific embodiment, a gas nozzle 301 is fixedly inserted through one side of the horizontal center line in the control panel 3, and a barometer 302 is fixedly inserted through the position symmetrical to the gas nozzle 301 in the control panel 3. After the control panel 3 is connected to the output end of the inert gas filling device through the gas nozzle 301, external inert gas can be filled into the explosion-proof enclosure 1, and the barometer 302 measures the air pressure in the explosion-proof enclosure 1.

[0031] Specifically, four support rods 401 are fixedly arranged at the top of the base 4 in a rectangular array. The support rods 401 are fixedly penetrated in the lower part of the flameproof enclosure 1. The tops of all the support rods 401 are fixedly arranged on the periphery of the motor main body 201. Moreover, the support rods 401 are fixedly penetrated in the heat dissipation ring 101 and the heat dissipation fins 203. The base 4 supports the flameproof enclosure 1 and the motor main body 201 thereon through the support rods 401. After inserting the installation bolts into the base 4 and then screwing them into the support structure, the base 4 is installed on the support structure.

[0032] The operation process of this embodiment is as follows: During operation, first, after the base 4 is supported on the support structure and then installed through the installation bolts, the drive shaft 204 is connected to the input shaft of the driven device, and then power can be supplied to start working. During the working process, observe the barometer 302. The barometer 302 shows the air pressure in the flameproof enclosure 1. When the air pressure in the flameproof enclosure 1 drops below 1.2 times the standard atmospheric pressure, connect the connecting piece filled with inert gas to the air nozzle 301, and then fill the inert gas into the flameproof enclosure 1 to fill the air pressure in the flameproof enclosure 1 above 1.5 times the atmospheric pressure, and maintain the air pressure in the flameproof enclosure 1 greater than the atmospheric pressure to ensure that the motor assembly 2 in the flameproof enclosure 1 is fully isolated from the working environment.

[0033] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. 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 can be combined in a suitable manner in any one or more embodiments or examples.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A novel variable frequency explosion-proof motor, comprising a flameproof housing (1), a motor assembly (2), a control panel (3) and a base (4), characterized in that: A motor assembly (2) is fixed to one end of the inner wall of the flameproof housing (1); a plurality of heat dissipation rings (101) are fixed to the periphery of the flameproof housing (1); adjacent heat dissipation rings (101) are spaced at equal intervals; a control panel (3) is fixedly connected to the upper inner portion of the flameproof housing (1); a base (4) is provided below the flameproof housing (1); a fixing opening (102) is provided through the upper outer portions of the flameproof housing (1) and the heat dissipation rings (101); the control panel (3) is fixed to the fixing opening (102); a shaft seal (103) is fixedly connected to one end of the flameproof housing (1); the motor assembly (2) comprises a motor body (20 1), a heat dissipation shell (202), heat dissipation fins (203) and a drive shaft (204), wherein the output end of the motor body (201) is fixed with the drive shaft (204), the drive shaft (204) is inserted through the flameproof shell (1) and extends out of the flameproof shell (1), the drive shaft (204) is sleeved in the shaft seal (103), the motor body (201) is fixed on the inner wall of the flameproof shell (1), one end of the motor body (201) away from the drive shaft (204) is fixedly connected with the heat dissipation shell (202), and the motor body (201) and the heat dissipation shell (202) are fixed with heat dissipation fins (203) in a circular array on the circumference.

2. A new variable frequency explosion-proof motor according to claim 1, characterized in that: An air outlet net (221) is fixed to one end of the heat dissipation shell (202) away from the motor body (201), and a micro fan (222) is fixed to the inner wall of the heat dissipation shell (202).

3. The novel variable frequency explosion-proof motor according to claim 1 is characterized in that: An air nozzle (301) is fixedly passed through one side of the transverse center line of the control panel (3), and an air pressure gauge (302) is fixedly passed through a position symmetrical to the air nozzle (301) in the control panel (3).

4. The novel variable frequency explosion-proof motor according to claim 1 is characterized in that: Four support rods (401) are fixed in a rectangular array on the top of the base (4); the support rods (401) are fixed through the lower part of the flameproof enclosure (1); the top ends of all the support rods (401) are fixed on the peripheral side of the motor body (201); and the support rods (401) are fixed through the heat dissipation ring (101) and the heat dissipation fins (203).

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