A new rolling mill kinetic energy recovery device

Abstract

The utility model discloses a novel mill kinetic energy recovery device relates to kinetic energy recovery technical field, the utility model discloses a flywheel energy storage mechanism and stepless speed changer, flywheel energy storage mechanism includes vacuum chamber, and the vacuum chamber is equipped with the rotor and two stators of forming axial flux, and the rotor includes the mandrel, and the mandrel is integrally connected with the flywheel, and the flywheel both sides edge all are fixed with permanent magnet, and two stators symmetrical setting are in the permanent magnet outside of flywheel both sides. The utility model discloses a flywheel and permanent magnet combination instead of motor rotor, and can constitute axial flux's permanent magnet motor with two stators cooperation, compared with the combination of the flywheel and motor, both need not the shaft coupling connection, and have the advantage that compactness is stronger, response speed promotion and efficiency promotion, is applicable to the use under the rolling mill environment, through the flywheel and recycles the kinetic energy of the idle running of rolling mill to utilize, can reduce the waste of rolling mill cost, realizes the purpose of reducing cost and increasing benefit.

Description

Technical Field

[0001] This utility model belongs to the field of kinetic energy recovery technology, and in particular relates to a novel rolling mill kinetic energy recovery device. Background Technology

[0002] During the operation of a roughing mill, the ratio of steel-passing time to no-load time is approximately three to two, with no-load time accounting for 40% of the stroke time. Due to the large energy consumption during start-stop operation, repeated start-stop cycles are not advisable. Therefore, the motor continues to operate during no-load operation, generating a significant amount of kinetic energy. If this kinetic energy can be effectively recovered and utilized, it can not only save energy and reduce production costs but also minimize environmental impact.

[0003] There are many specific measures for kinetic energy recovery, such as power generation recovery, hydraulic recovery, compressed air recovery, inertial kinetic energy recovery, thermal energy recovery, and frictional energy recovery. However, for kinetic energy recovery of roughing mills, due to the extremely harsh environment and limited installation methods, the installation materials need to be resistant to high temperatures and humidity. Therefore, only the kinetic energy recovery of mechanical flywheels can meet the installation and usage requirements.

[0004] For flywheel energy storage and recovery, the current structure generally consists of a motor / generator and a flywheel system installed in a vacuum chamber. The mechanical connection between the two will suffer some losses, and the overall volume is relatively large, making it unsuitable for conditions with limited space and installation environment. Summary of the Invention

[0005] The purpose of this invention is to provide a novel rolling mill kinetic energy recovery device. It replaces the rotor of the motor with a combination of a flywheel and a permanent magnet, which, together with two stators, can form a permanent magnet motor with axial magnetic flux. Compared with the existing flywheel and motor combination, the two do not require a coupling connection and have the advantages of being more compact, having a faster response speed, and improved efficiency. It is suitable for use in rolling mill environments. By recovering and utilizing the kinetic energy of the rolling mill during idling through the flywheel, it can reduce the waste of rolling mill costs and achieve the goal of cost reduction and efficiency improvement.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a novel rolling mill energy recovery device, including a flywheel energy storage mechanism and a continuously variable transmission;

[0008] The flywheel energy storage mechanism includes a vacuum chamber, in which a rotor and two stators are provided to form an axial magnetic flux;

[0009] The rotor includes a spindle, on which a flywheel is integrally connected, and permanent magnets are fixed on both sides of the flywheel;

[0010] The two stators are symmetrically arranged on the outside of the permanent magnets on both sides of the flywheel;

[0011] One end of the mandrel passes through the vacuum chamber and is connected to the input shaft of the continuously variable transmission (CVT). The output shaft of the CVT is connected to the drive shaft of the rolling mill via a transmission chain.

[0012] The flywheel has a slot on its circumferential side, and several through openings extending into the slot are provided on both sides of the flywheel edge. Several internal pin holes are provided in the slot.

[0013] The permanent magnet has a ring-shaped structure. Several round rods are fixed on one surface of the permanent magnet. The round rods pass through several through-holes respectively. The area of ​​the round rods located in the slot is provided with a necking groove.

[0014] A rotating sleeve is rotatably connected in the slot. Both sides of the rotating sleeve are provided with relief grooves that cooperate with the round rod. Several limiting edges are provided in the relief grooves. Several external pin holes are opened on the circumferential side of the rotating sleeve.

[0015] When the external pin holes and the internal pin holes are concentric, fastening pins are provided in the internal pin holes and the external pin holes, and the limiting edges are respectively locked in the necking grooves of the round rods.

[0016] Furthermore, the vacuum chamber is provided with a wiring terminal on the outside, and a wiring mechanism connecting the wiring segment and the stator is provided inside the vacuum chamber.

[0017] Furthermore, a capacitor or electrical equipment is connected to the terminal.

[0018] Furthermore, the flywheel has several through holes and several inner pin holes that are misaligned.

[0019] Furthermore, friction wheels are provided at the output end of the continuously variable transmission and the drive shaft end of the rolling mill, and the transmission chain is arranged on the two friction wheels, and the transmission chain is a multi-row chain.

[0020] Furthermore, both sides of the flywheel are provided with transition sections for connecting the spindle, and the permanent magnet is sleeved on the transition sections.

[0021] This utility model has the following beneficial effects:

[0022] 1. This utility model replaces the rotor of the motor with a combination of flywheel and permanent magnet. When combined with two stators, it can form a permanent magnet motor with axial magnetic flux. Compared with the existing combination of flywheel and motor, the two do not need to be connected by a coupling. It has the advantages of strong compactness, improved response speed and efficiency. It is suitable for use in the rolling mill environment. By recovering and utilizing the kinetic energy of the rolling mill during idling, the flywheel can reduce the waste of rolling mill costs and achieve the purpose of cost reduction and efficiency improvement.

[0023] 2. This utility model designs a novel fixing method for connecting flywheels and permanent magnets, which facilitates connection while ensuring connection stability and balance, meeting the challenges of high-speed flywheel rotation. At the same time, it does not affect the strength and quality of permanent magnets (permanent magnets have high hardness but are brittle and have low tensile strength; direct connection with fasteners may lead to cracking or chipping). Compared with existing connection methods (adhesive fixing, carbon fiber strap reinforcement, built-in slot fixing, and sheath reinforcement), it solves the problems of inapplicability, difficulty in operation, and poor fastening.

[0024] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a novel rolling mill energy recovery device according to the present invention;

[0027] Figure 2 Here is an exploded view of the rotor structure;

[0028] Figure 3 This is a schematic diagram of the structure after one-quarter of the rotor has been removed;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Continuously variable transmission, 2-Vacuum chamber, 3-Rotor, 4-Stator, 5-Permanent magnet, 6-Transmission chain, 7-Friction wheel, 301-Mandrel, 302-Flywheel, 303-Slotted, 304-Through, 305-Inner pin hole, 306-Spindle, 307-Relief groove, 308-Limiting edge, 309-Outer pin hole, 310-Transition section, 501-Round rod, 502-Necked groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-3 As shown, this utility model is a novel rolling mill energy recovery device, including a flywheel energy storage mechanism and a continuously variable transmission 1;

[0033] The flywheel energy storage mechanism includes a vacuum chamber 2, inside which is a rotor 3 that forms axial magnetic flux and two stators 4;

[0034] The rotor 3 includes a spindle 301, a flywheel 302 integrally connected to the spindle 301, permanent magnets 5 fixed on both sides of the flywheel 302, and a magnetic levitation bearing is used at the connection position between the spindle 301 and the vacuum chamber 2.

[0035] Two stators 4 are symmetrically arranged on the outside of the permanent magnets 5 on both sides of the flywheel 302;

[0036] One end of the mandrel 301 passes through the vacuum chamber 2 and is connected to the input shaft of the continuously variable transmission 1. The output shaft of the continuously variable transmission 1 is connected to the drive shaft of the rolling mill through the transmission chain 6.

[0037] The flywheel 302 has a slot 303 on its periphery, and several through openings 304 extending to the slot 303 are provided on both sides of the flywheel 302. Several internal pin holes 305 are provided in the slot 303.

[0038] The permanent magnet 5 has a ring-shaped structure. Several round rods 501 are fixed on one surface of the permanent magnet 5. The round rods 501 pass through several through holes 304 respectively. The area of ​​the round rods 501 located in the slot 303 is provided with a necking groove 502.

[0039] A rotating sleeve 306 is rotatably connected inside the slot 303. Both sides of the rotating sleeve 306 are provided with relief grooves 307 that cooperate with the round rod 501. Several limiting edges 308 are provided in the relief grooves 307. Several external pin holes 309 are opened on the circumferential side of the rotating sleeve 306.

[0040] When a number of outer pin holes 309 and a number of inner pin holes 305 are concentric, fastening pins are provided in the inner pin holes 305 and the outer pin holes 309, and a number of limiting edges 308 are respectively stuck in the necking grooves 502 of a number of round rods 501.

[0041] The vacuum chamber 2 has a wiring terminal on the outside and a wiring mechanism connecting the wiring segment and the stator 4 inside the vacuum chamber 2.

[0042] The terminals are connected to capacitors or electrical equipment.

[0043] Among them, such as Figure 2-3 As shown, several through holes 304 and several inner pin holes 305 on the flywheel 302 are staggered.

[0044] Among them, such as Figure 1As shown, friction wheels 7 are provided at the output end of the continuously variable transmission 1 and the drive shaft end of the rolling mill. The transmission chain 6 is set on the two friction wheels 7 and consists of multiple rows of chains.

[0045] Among them, such as Figure 2-3 As shown, both sides of the flywheel 302 are provided with transition sections 310 that connect to the spindle 301. The permanent magnet 5 is fitted on the transition section 310. The design of the transition section 310 facilitates the installation and positioning of the permanent magnet 5, and at the same time enables the permanent magnet 5 to resist a certain centrifugal force.

[0046] During the installation of the permanent magnet 5 and the flywheel 302, the permanent magnet 5 and the flywheel 302 are first pre-fixed by adhesive.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel mill kinetic energy recovery device characterized by: Including flywheel energy storage mechanism and continuously variable transmission (CVT) (1); The flywheel energy storage mechanism includes a vacuum chamber (2), which contains a rotor (3) that forms an axial magnetic flux and two stators (4). The rotor (3) includes a spindle (301), on which a flywheel (302) is integrally connected, and permanent magnets (5) are fixed on both sides of the flywheel (302). The two stators (4) are symmetrically arranged on the outside of the permanent magnets (5) on both sides of the flywheel (302); One end of the mandrel (301) passes through the vacuum chamber (2) and is connected to the input shaft of the continuously variable transmission (1). The output shaft of the continuously variable transmission (1) is connected to the drive shaft of the rolling mill through the transmission chain (6). The flywheel (302) has a slot (303) on its peripheral side, and several through openings (304) extending to the slot (303) are provided at both sides of the flywheel (302). Several internal pin holes (305) are provided in the slot (303). The permanent magnet (5) has a ring-shaped structure. Several round rods (501) are fixed on one surface of the permanent magnet (5). Several round rods (501) pass through several through holes (304). The area of ​​the round rod (501) located in the slot (303) is provided with a necking groove (502). A rotating sleeve (306) is rotatably connected in the slot (303). Both sides of the rotating sleeve (306) are provided with relief grooves (307) that cooperate with the round rod (501). Several limiting edges (308) are provided in the relief grooves (307). Several external pin holes (309) are opened on the circumferential side of the rotating sleeve (306). When the external pin holes (309) and the internal pin holes (305) are concentric, fastening pins are provided in the internal pin holes (305) and the external pin holes (309), and the limiting edges (308) are respectively locked in the necking grooves (502) of the round rods (501).

2. A novel mill kinetic energy recovery device according to claim 1, characterized in that, The vacuum chamber (2) is provided with a wiring terminal on the outside and a wiring mechanism for connecting the wiring segment and the stator (4) is provided inside the vacuum chamber (2).

3. A novel mill kinetic energy recovery device as claimed in claim 2, wherein, A capacitor or electrical equipment is connected to the terminal.

4. A novel mill kinetic energy recovery device as claimed in claim 1, wherein, The flywheel (302) has several openings (304) and several inner pin holes (305) that are misaligned.

5. A novel mill kinetic energy recovery device as claimed in claim 1, wherein, The continuously variable transmission (1) and the drive shaft of the rolling mill are both provided with friction wheels (7), and the transmission chain (6) is set on the two friction wheels (7). The transmission chain (6) is a multi-row chain.

6. A novel mill kinetic energy recovery device as claimed in claim 1, wherein, The flywheel (302) has a transition section (310) on both sides connecting the spindle (301), and the permanent magnet (5) is sleeved on the transition section (310).

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