Hollow motor structure

Abstract

The application discloses a hollow motor structure and relates to the technical field of pipeline transportation, which comprises a shell, a stator coil and a rotor. The stator coil is fixed to the inner wall of the shell in a circumferential direction. The rotor is located on the inner side of the stator coil, and the stator coil, the shell and the rotor are coaxially arranged. The rotor comprises a rotor hollow roller and a plurality of permanent magnetic sheets. The rotor hollow roller is a cylindrical hollow structure. The permanent magnetic sheets are fixed to the outer wall of the rotor hollow roller in a circumferential direction at equal intervals. A bearing is arranged between the rotor hollow roller and the shell. A cyclone part is arranged in the rotor hollow roller. The center part of the rotor is left with a certain space, so that the weight and volume of the motor are greatly reduced, which is very advantageous for application scenarios with limited space. The rotor structure is compact, and the rotational inertia is small. Therefore, the response speed, precision and efficiency of the motor are relatively high, and the noise is relatively small.

Description

Technical Field

[0001] This invention relates to the field of pipeline transportation technology, specifically a hollow motor structure. Background Technology

[0002] In daily life, most electrical appliances we use are driven by motors, especially when it comes to pipeline transportation, which requires transmission mechanisms, and motors are an indispensable part of these mechanisms.

[0003] Currently, in the process of transporting fluids in pipelines, impellers are usually built inside the pipeline with the impeller shaft extending to the outside of the pipeline. A motor provides rotational power to the impeller shaft, thereby providing power for transporting the fluid in the pipeline. This power arrangement is relatively complicated, with heavy weight and large space occupation, and the pipeline needs to be bent to meet the requirements. In addition, the rotors of the drive motors and generators are mostly solid structures, and in practical applications, the relevant components can only be placed outside the motor or generator, which is not compact enough and has certain limitations in use.

[0004] Therefore, a hollow motor structure is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hollow motor structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hollow motor structure, comprising a housing, a stator coil, and a rotor, wherein the stator coil is circumferentially fixed to the inner wall of the housing, the rotor is located inside the stator coil, and the stator coil, housing, and rotor are coaxially arranged; the rotor comprises a hollow rotor roller and a plurality of permanent magnet plates; the hollow rotor roller is a cylindrical hollow structure; the permanent magnet plates are equidistantly circumferentially fixed to the outer wall of the hollow rotor roller; and a bearing is installed between the hollow rotor roller and the housing.

[0007] Preferably, a swirling element is installed inside the hollow rotor drum. The swirling element consists of multiple swirling blades, which are welded and fixed to the inner wall of the hollow rotor drum. The multiple swirling blades are arranged in a circular array with the central axis of the hollow rotor drum as the center.

[0008] Preferably, both ends of the housing are fixedly connected to a flange, and the two flanges are arranged symmetrically.

[0009] Preferably, the housing is provided with a backup mechanism, which includes an input pipe and an output pipe on both sides of the housing. A flange is fixedly connected to the side of the input pipe and the output pipe that are close to each other. An impeller is provided inside the hollow rotor drum. A drive shaft is fixedly connected to the middle of the impeller. A bevel gear is fixedly connected to both ends of the drive shaft. A backup motor is provided at the top of both the input pipe and the output pipe. A fixing plate is fixedly connected to the top of each backup motor. A central rotating shaft is provided at the end of each backup motor. The drive shaft passes through the center of the swirling element, and the swirling element is rotatably connected to the drive shaft. Rotating tubes are rotatably connected to both ends of the hollow rotor drum. The bottom ends of the two central rotating shafts extend into the input pipe and the output pipe, respectively. A driven shaft is provided at the bottom end of each central rotating shaft, and the bottom end of each driven shaft extends into the rotating tube. A bevel gear is fixedly connected to the bottom end of each driven shaft, and bevel gears mesh with each other. A switch is installed at the bottom end of each fixing plate.

[0010] Preferably, the housing is provided with an acceleration mechanism, which includes a fixed ring fixed to the inner side of the rotor hollow drum, a connecting ring fixed to the side of the fixed ring near the input pipe, a set of guide vanes fixed to the outer circumferential side of the connecting ring, and a set of inclined guide holes opened on the outer circumferential side of the connecting ring.

[0011] Preferably, the housing is provided with a flow-gathering mechanism, which includes a flow-guiding cone disposed inside the hollow rotor drum. A retaining ring is fixedly connected to the side of the flow-guiding cone near the output pipe, and the outer ring surface of the retaining ring is fixed to the inner side of the hollow rotor drum. A set of flow-gathering holes are circumferentially opened on the surface of the retaining ring. Movable rods are fixedly connected to the top and bottom ends inside the flow-guiding cone, and the ends of the movable rods are rotatably connected to the drive shaft.

[0012] Preferably, each driven shaft has a square opening at its top end, and each central rotating shaft has a locking block fixed to its bottom end, with the locking block located within the square opening.

[0013] Beneficial effects:

[0014] Compared with existing technologies, this hollow motor structure has the following advantages:

[0015] First, the rotor center of this invention has a certain amount of space, which greatly reduces the weight and volume of the motor, which is very advantageous for applications with limited space.

[0016] Second, the rotor structure of this invention is compact and has a small moment of inertia, so the motor has a relatively high response speed, accuracy and efficiency, and relatively low noise.

[0017] Third, in this invention, when the load on the rotor hollow drum and the swirl component is large or cannot meet the fluid power requirements, the backup motor is started for power compensation; and when the rotor hollow drum fails and cannot rotate, the backup motor can be started for emergency handling.

[0018] IV. When used as a generator, this invention can not only generate electricity from the stator coils through the rotation of the hollow rotor drum under the principle of electromagnetic induction, but also, when the water flow is large and there is excess kinetic energy in the fluid flowing through the hollow rotor drum, a standby motor can be started, allowing the standby motor to generate electricity synchronously. The fluid flows into the hollow rotor drum from the input pipe, and under the guidance of the guide vanes on the connecting ring, it enters the guide hole and is then ejected. The ejected fluid hits the impeller, and the impact force generated by the ejection drives the impeller to rotate, increasing the impeller's rotational speed and thus increasing the rotational speed of the central shaft, so that the fluid kinetic energy is fully utilized. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the stator coil structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the rotor structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the shell, input pipe, and output pipe in this invention;

[0024] Figure 6 This is a schematic cross-sectional view of the hollow rotor drum, input pipe, and output pipe in this invention.

[0025] Figure 7 This is a schematic diagram of the backup mechanism in this invention;

[0026] Figure 8 This is a schematic diagram of the acceleration mechanism in this invention;

[0027] Figure 9 For the present invention Figure 7 A magnified view of part A in the diagram;

[0028] Figure 10 This is a schematic diagram of the flow-gathering mechanism in this invention.

[0029] In the diagram: 1. Shell; 2. Rotor; 21. Hollow rotor drum; 22. Permanent magnet; 3. Bearing; 4. Stator coil; 5. Swirl component; 6. Flange 1; 14. Backup mechanism; 140. Input pipe; 141. Output pipe; 142. Flange 2; 143. Impeller; 144. Drive shaft; 145. Bevel gear 1; 146. Backup motor; 147. Fixing plate; 148. Central rotating shaft; 149. Driven shaft; 1490. Bevel gear 2; 1491. Rotating tube; 15. Acceleration mechanism; 151. Fixing ring; 152. Connecting ring; 153. Guide vane; 154. Guide hole; 16. Converging mechanism; 161. Guide cone; 162. Adhesive ring; 163. Converging hole; 164. Movable rod; 17. Square opening; 18. Locking block. Detailed Implementation

[0030] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0031] like Figures 1-10 As shown, a hollow motor structure includes a housing 1, a stator coil 4, and a rotor 2. The stator coil 4 is circumferentially fixed to the inner wall of the housing 1, and the rotor 2 is located inside the stator coil 4. The stator coil 4, housing 1, and rotor 2 are coaxially arranged. The rotor 2 includes a hollow rotor roller 21 and multiple permanent magnet plates 22. The hollow rotor roller 21 is a cylindrical hollow structure. The permanent magnet plates 22 are equidistantly fixed circumferentially to the outer wall of the hollow rotor roller 21. A bearing 3 is installed between the hollow rotor roller 21 and the housing 1. A swirl element 5 is installed inside the hollow rotor roller 21. The swirl element 5 consists of multiple swirl blades, which are welded and fixed to the inner wall of the rotor hollow drum 21. The multiple swirl blades are arranged in a circular array with the central axis of the rotor hollow drum 21 as the center. After the stator coil 4 is energized, an electromagnetic field is generated inside it. The permanent magnet 22 outside the rotor hollow drum 21 is driven by the magnetic force to rotate the rotor hollow drum 21, thereby driving the swirl element 5 to rotate synchronously. This generates a pressure difference at both ends of the rotor hollow drum 21, which can provide power for the conveying of liquid or gas. The rotor of this invention has a certain space in the center, which greatly reduces the weight and volume of the motor. This is very advantageous for applications with limited space. The rotor structure of this invention is compact and has a small moment of inertia. Therefore, the motor has a relatively high response speed, accuracy and efficiency, and low noise.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, flange 6 is fixed to both ends of the housing 1, and the two flanges 6 are arranged symmetrically. The flange 6 is designed for pipeline DC transfer pumps, liquids, and has the same inner diameter as the pipeline diameter, which facilitates connection and fixation with the pipeline.

[0033] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a backup mechanism 14 is provided inside the housing 1. The backup mechanism 14 includes an input pipe 140 and an output pipe 141 located on both sides of the housing 1. A flange 142 is fixedly connected to the side of the input pipe 140 and the output pipe 141 that are close to each other. An impeller 143 is provided inside the rotor hollow drum 21. The impeller 143 is arranged parallel to the swirling element 5. At this time, the swirling element 5 is also an impeller structure. A drive shaft 144 is fixedly connected to the middle of the impeller 143. A bevel gear 145 is fixedly connected to both ends of the drive shaft 144. A backup motor 146 is provided at the top of the input pipe 140 and the output pipe 141. A fixing plate 147 is fixedly connected to the top of the backup motor 146. A central rotating shaft 148 is provided at the end of the backup motor 146. The drive shaft 144 passes through the center of the swirling element 5, and the swirling element 5 is rotatably connected to the drive shaft 144. The two do not affect each other. Both ends of the hollow rotor drum 21 are rotatably connected to rotating tubes 1491, and the bottom ends of the two central rotating shafts 148 extend into the input pipe 140 and the output pipe 141, respectively. Each central rotating shaft 148 has a driven shaft 149 at its bottom end, and the bottom end of each driven shaft 149 extends into the rotating tube 1491. A second bevel gear 1490 is fixedly connected to the bottom end of each driven shaft 149, and a first bevel gear 145 meshes with the second bevel gear 1490. A switch is installed at the bottom end of each fixed plate 147, which controls whether the standby motor 146 starts and engages. The device is connected to the input pipe 140 and the output pipe 141 via flange 6 and flange 142, respectively. Fluid enters through the input pipe 140 and exits through the output pipe 141.

[0034] When the device is used as a generator, the backup motor 146 is used as a backup generator. When there is excess fluid flow kinetic energy, and there is still excess fluid kinetic energy after generating electricity through the rotor hollow drum 21, swirl element 5, and stator coil 4, the backup motor 146 can be activated. After activation, the fluid enters the rotor hollow drum 21 and drives the impeller 143 to rotate. The impeller 143 drives the drive shaft 144 to rotate, and the drive shaft 144 drives the first bevel gear 145 at both ends to rotate. The first bevel gear 145 drives the second bevel gear 1490 to rotate. Since the fixed plate 147 fixes the backup motor 146, the rotating tube 1491 will not rotate regardless of whether the rotor hollow drum 21 rotates. The second bevel gear 1490 drives the driven shaft 149 to rotate, and the driven shaft 149 drives the central rotating shaft 148 to rotate. The central rotating shaft 148 drives the rotor of the backup motor 146 to rotate, thereby making full use of the fluid flow and realizing power generation.

[0035] Furthermore, the housing 1 is equipped with an acceleration mechanism 15. The acceleration mechanism 15 includes a fixed ring 151 fixed to the inner side of the rotor hollow drum 21. A connecting ring 152 is fixed to the side of the fixed ring 151 near the input pipe 140. A set of guide vanes 153 are fixed to the outer circumferential side of the connecting ring 152. A set of inclined guide holes 154 are opened on the outer circumferential side of the connecting ring 152. Fluid flows into the rotor hollow drum 21 from the input pipe 140. Under the guidance of the guide vanes 153 on the connecting ring 152, it enters the guide holes 154 and is then ejected. The ejected fluid will spray onto the... On the impeller 143, the impact force generated by the jet will drive the impeller 143 to rotate, accelerating the rotation speed of the impeller 143, thereby increasing the rotation speed of the central shaft 148 and making the energy utilization efficiency higher. The housing 1 is provided with a flow-concentrating mechanism 16, which includes a flow-concentrating cone 161 provided inside the rotor hollow drum 21. A retaining ring 162 is fixed to the side of the flow-concentrating cone 161 near the output pipe 141, and the outer ring surface of the retaining ring 162 is fixed to the inner side of the rotor hollow drum 21. A set of flow-concentrating holes 163 are circumferentially opened on the surface of the retaining ring 162. The top and bottom of the flow-concentrating cone 161 are located inside the flow-concentrating cone 161. Each end is fixedly connected to a movable rod 164, and the ends of the movable rods 164 are rotatably connected to the drive shaft 144. The fluid is guided by the guide cone 161. A small amount of fluid enters the guide cone 161, while the majority of the fluid is located on the outside of the guide cone 161. As the gap between the outer ring surface of the guide cone 161 and the hollow rotor drum 21 gradually decreases, the amount of fluid gradually increases. At this time, the number of fluids passing through the convergence holes 163 increases, and the speed increases. A large amount of fluid is ejected onto the guide vane 153, and then, guided by the guide vane 153, enters the guide hole 154, thereby cooperating with the acceleration mechanism 15. To further accelerate the impact force of fluid jet on impeller 143 and improve energy utilization efficiency, the top of driven shaft 149 is provided with a square opening 17, and the bottom of central rotating shaft 148 is fixed with a locking block 18, and the locking block 18 is located in the square opening 17. When installing input pipe 140 and output pipe 141, it is necessary to move input pipe 140, output pipe 141 and flange 142 horizontally so that the locking block 18 is inserted into the square opening 17 laterally, so that driven shaft 149 can drive central rotating shaft 148 to rotate through the cooperation of locking block 18 and square opening 17, and is easy to disassemble.

[0036] When used as a motor as a power source, if the hydraulic driving force provided by the rotor hollow drum 21 and the vortex component 5 is insufficient, the backup motor 146 can be started, the central shaft 148 will rotate, and the backup motor 146 will provide hydraulic driving force to compensate, thereby ensuring stable operation of the equipment and having a wider range of applications. In addition, the backup motor 146 can also be activated to provide hydraulic driving force for emergency use in case of main motor failure (i.e., stator coil 4 or rotor 2).

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hollow motor structure, comprising a housing (1), stator coils (4), and a rotor (2), characterized in that: The stator coil (4) is circumferentially fixed to the inner wall of the housing (1). The rotor (2) is located inside the stator coil (4), and the stator coil (4), housing (1), and rotor (2) are coaxially arranged. The rotor (2) includes a rotor hollow roller (21) and multiple permanent magnet plates (22). The rotor hollow roller (21) is a cylindrical hollow structure. The permanent magnet plates (22) are equidistantly fixed to the outer wall of the rotor hollow roller (21). A bearing (3) is installed between the rotor hollow roller (21) and the housing (1). The interior of the housing (1) is equipped with a swirl element (5), which consists of multiple swirl blades. The multiple swirl blades are welded and fixed to the inner wall of the hollow rotor (21), and the multiple swirl blades are arranged in a circular array with the central axis of the hollow rotor (21) as the center. The housing (1) is provided with a backup mechanism (14), which includes an input pipe (140) and an output pipe (141) on both sides of the housing (1). The input pipe (140) and the output pipe (141) are respectively fixed with flanges (142) on the side of the input pipe (140) and the output pipe (141) that are close to each other. The rotor hollow drum (21) is equipped with an impeller (143) inside. A drive shaft (144) is fixedly connected to the middle of the impeller (143). Both ends of the drive shaft (144) are fixedly connected with bevel gears (145). The top of the input pipe (140) and the output pipe (141) are equipped with a spare motor (146). The top of the spare motor (146) is fixedly connected with a fixing plate (147). The end of the spare motor (146) is equipped with a central rotating shaft (148). The drive shaft (144) passes through the center of the swirling element (5), and the swirling element ( 5) Rotary connection with drive shaft (144), both ends of the rotor hollow drum (21) are rotatably connected to rotating tube (1491), and the bottom ends of the two central rotating shafts (148) extend into the input pipe (140) and output pipe (141) respectively. The bottom ends of the central rotating shafts (148) are provided with driven shafts (149), and the bottom ends of the driven shafts (149) extend into the rotating tube (1491). The bottom ends of the driven shafts (149) are fixedly connected with bevel gears (1490), and bevel gears (145) mesh with bevel gears (1490).

2. The hollow motor structure according to claim 1, characterized in that: Both ends of the housing (1) are fixed with flanges (6), and the two flanges (6) are arranged symmetrically.

3. The hollow motor structure according to claim 1, characterized in that: The housing (1) is provided with an acceleration mechanism (15). The acceleration mechanism (15) includes a fixed ring (151) fixed to the inner side of the rotor hollow drum (21). A connecting ring (152) is fixed to the side of the fixed ring (151) near the input pipe (140). A set of guide vanes (153) are fixed to the outer circumferential side of the connecting ring (152). A set of inclined guide holes (154) are opened on the outer circumferential side of the connecting ring (152).

4. The hollow motor structure according to claim 1, characterized in that: The housing (1) is provided with a flow-gathering mechanism (16) inside. The flow-gathering mechanism (16) includes a flow-guiding cone (161) inside the rotor hollow drum (21). A retaining ring (162) is fixedly connected to the side of the flow-guiding cone (161) near the output pipe (141), and the outer ring surface of the retaining ring (162) is fixed to the inner side of the rotor hollow drum (21). A set of flow-gathering holes (163) are circumferentially opened on the surface of the retaining ring (162). Movable rods (164) are fixedly connected to the top and bottom of the flow-guiding cone (161), and the ends of the movable rods (164) are rotatably connected to the transmission shaft (144).

5. A hollow motor structure according to claim 1, characterized in that: The top of each driven shaft (149) is provided with a square opening (17), and the bottom of each central rotating shaft (148) is fixed with a locking block (18), and the locking block (18) is located inside the square opening (17).

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