An uninterruptible emergency power supply device

Abstract

An uninterruptible emergency power supply device includes a flywheel power device, a generator, and a power source connected in sequence, providing an uninterruptible emergency power supply device efficiently, with high quality and safety. Compared with the prior art, the uninterruptible emergency power supply device of the present invention has the following advantages: it completely avoids the environmental pollution problems caused by the use of storage batteries; it operates reliably and will not pose dangers such as explosion and fire; it can be used for power supplies with relatively large power (megawatt level); the equipment has good integrity, and the protection level can reach IP65, and it can be applied to a variety of harsh environments.

Description

Technical Field

[0001] The present invention relates to the field of electricity, and particularly to an uninterruptible emergency power supply device. Background Art

[0002] Electricity is indispensable for industrial and agricultural production and people's daily life. The supply of electricity needs to pass through transmission lines. However, once the transmission lines fail due to some unpredictable factors, power outages may occur. However, there are some places where power cannot be cut off instantly, such as hospitals, banks, automated production factories, network communication facilities, and some military departments, etc. Therefore, there is an "uninterruptible power supply". And the current uninterruptible power supply devices all use storage batteries to supplement energy at the moment of power failure. This method has many defects: the storage battery is large in volume, occupies a large area, and is heavy, especially for high-power power supplies, which is particularly inconvenient. Second, if the storage battery is not properly used and maintained, there is a possibility of short circuit, and then explosion and fire may occur. Third, whether the storage battery is acidic or alkaline, it will pollute the environment. Fourth, its working environment has high requirements, high maintenance costs, and a short service life (3 - 5 years). Summary of the Invention

[0003] Aiming at the above technical problems, the purpose of the present invention is to provide an uninterruptible emergency power supply device that solves the above technical problems.

[0004] To solve the above technical problems, the uninterruptible emergency power supply device of the present invention includes a flywheel power device, a generator, and a power source connected in sequence;

[0005] The flywheel power device includes: a base, the base is a hollow structure; an outer rotor transmission shaft, the outer rotor transmission shaft penetrates through one end of the base; an outer rotor, the outer rotor is arranged inside the base, one end of the outer rotor is connected to the outer rotor transmission shaft, and the other end of the outer rotor is connected to the other end of the base; a flywheel shaft, the flywheel shaft is arranged inside the base, one end of the flywheel shaft is connected to the outer rotor transmission shaft in an eccentric and concentric manner, and the other end of the flywheel shaft is connected to the other end of the outer rotor in an eccentric and concentric manner; a flywheel, the flywheel is arranged on the flywheel shaft, and the flywheel is located inside the outer rotor; an inner and outer rotor coupling degree control mechanism, the inner and outer rotor coupling degree control mechanism is arranged at one end of the base, and the inner and outer rotor coupling degree control mechanism is connected to the outer rotor transmission shaft; an energy replenishment mechanism, the energy replenishment mechanism is arranged at the other end of the base, and the energy replenishment mechanism is connected to the flywheel shaft.

[0006] It is characterized in that the inner and outer rotor coupling degree control mechanism includes:

[0007] A control shell, the control shell is arranged at one end of the base;

[0008] Control the generator rotor, which is arranged inside the control housing and is arranged on the outer rotor transmission shaft;

[0009] Control the generator stator, which is arranged inside the control housing and corresponds to the generator rotor.

[0010] The energy replenishment mechanism includes:

[0011] An energy replenishment housing, which is arranged at the other end of the base;

[0012] An energy replenishment motor rotor, which is arranged inside the energy replenishment housing and is arranged on the flywheel shaft;

[0013] An energy replenishment motor stator, which is arranged inside the energy replenishment housing and corresponds to the energy replenishment motor rotor.

[0014] Bearings are provided between the outer rotor and the flywheel shaft, and between the outer rotor and the base.

[0015] The generator is connected to the power source through an automatic clutch, and the automatic clutch includes:

[0016] A jacket, with a sunken groove on one side of the jacket; a clutch groove, which is arranged on the inner wall of the jacket; a clutch rod, which is arranged in the clutch groove; a core seat, which is arranged in the sunken groove; a core column, which is connected to the core seat;

[0017] The top surface of the clutch groove is an inclined surface, and the included angle a between the inclined surface of the clutch groove and the tangent direction of the outer circle of the core seat is 30 degrees;

[0018] A clutch opening is provided at the bottom surface of the clutch groove, and the size of the clutch opening is smaller than the outer diameter of the clutch rod;

[0019] The number of the clutch grooves is three, and the three clutch grooves are evenly arranged on the inner wall of the jacket;

[0020] A bearing is provided between the core seat and the jacket;

[0021] A key groove is provided on the inner wall of the core column.

[0022] The generator is connected in parallel with a reactor, and the reactor includes:

[0023] Upper yoke; lower yoke, the lower yoke is arranged at an interval from the upper yoke; iron core unit, the iron core unit is arranged between the lower yoke and the upper yoke, and both ends of the iron core unit are respectively connected to the lower yoke and the upper yoke; wherein the iron core unit includes: upper iron core column, one end of the upper iron core column is connected to the upper yoke, and the other end of the upper iron core column extends towards the lower yoke; lower iron core column, one end of the lower iron core column is connected to the lower yoke, and the other end of the lower iron core column extends towards the upper yoke; middle iron core column, the middle iron core column is arranged between the upper iron core column and the lower iron core column; coil, the coil is wrapped outside the upper iron core column, the middle iron core column and the lower iron core column, and the coil is located between the lower yoke and the upper yoke;

[0024] There are air gaps between the upper iron core column and the middle iron core column and between the lower iron core column and the middle iron core column;

[0025] There are cushion blocks arranged in the air gaps;

[0026] The material of the iron core unit is silicon steel, a magnetic conductive material.

[0027] Compared with the prior art, the uninterruptible emergency power supply device of the present invention has the following advantages: it completely avoids the environmental pollution problems brought by the use of storage batteries; it runs reliably and will not have dangers such as explosion and fire; it can be used for power supplies with relatively large power (megawatt level); the equipment has good integrity, and the protection level can reach IP65, and it can be applied to a variety of harsh environments. Description of the Drawings

[0028] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present invention will become more obvious.

[0029] Figure 1 It is a schematic structural diagram of the uninterruptible emergency power supply device of the present invention;

[0030] Figure 2 It is a schematic structural diagram of the flywheel type power equipment in the present invention.

[0031] Figure 3 It is a side sectional view of the automatic clutch device in the present invention;

[0032] Figure 4 It is for Figure 1 the A-A sectional view of;

[0033] Figure 5 It is a schematic structural diagram of the clutch groove in the present invention;

[0034] Figure 6 It is the working schematic of the automatic clutch device in the present invention Figure 1 ;

[0035] Figure 7Schematic diagram of the operation of the automatic clutch device in the present invention Figure 2 ;

[0036] Figure 8 Schematic diagram of the reactor structure in the present invention;

[0037] Figure 9 is Figure 8 A - A cross-sectional view of Specific embodiments

[0038] The uninterruptible emergency power supply device of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] As Figures 1 to 9 shown, the uninterruptible emergency power supply device of the present invention includes a flywheel power device 13, a generator 11, and a power source 14 that are connected in sequence.

[0040] Among them, the flywheel power device 13 uses flywheel energy storage and realizes energy conversion. It mainly consists of a device base 1, an outer rotor 2, an energy storage flywheel 3, a coupled control generator stator 4, a coupled control generator rotor 5, a high-speed (energy replenishment) motor stator 6, a high-speed (energy replenishment) motor rotor 7, a flywheel shaft 8, an outer rotor transmission shaft 12, and bearings 9.

[0041] The flywheel 3 is connected to the high-speed (energy replenishment) motor rotor 7 through the flywheel shaft 8, that is, the high-speed (energy replenishment) motor rotor 7, the flywheel 3, and the flywheel shaft 8 form an integral body. It is supported by bearings 9 at both ends and is placed inside the outer rotor 2. The outer rotor 2 and the outer rotor transmission shaft 12 are connected to the coupled control generator rotor 5 and form an integral body. They are supported by bearings 9 at both ends and are placed inside the device base 1, and can be connected to the generator 11 through a coupling 10. The high-speed (energy replenishment) motor stator 6 and the coupled control generator stator 4 are installed on the device base 1.

[0042] When the device is operating, the flywheel 3 is driven by the high-speed (energy replenishment) motor to make its speed reach about 4000 r / min. Since the flywheel 3 has a large moment of inertia, it stores a large amount of kinetic energy when rotating at high speed. The outer rotor 2 is connected to the generator 11 through a coupling 10, and the generator 11 is connected to the network power supply. When the network is normally powered, the generator 11 operates in the motor state, its speed remains at 1500 r / min (the rated speed of a 4-pole generator), and the rotation direction is the same as that of the flywheel 3. When the network power fails, under the control of the main controller, an electromagnetic coupling force is generated between the outer rotor 2 and the flywheel 3. The kinetic energy stored in the flywheel 3 is released to the generator through the outer rotor 2 (driving the generator rotor to generate electricity).

[0043] The generator 11 is connected to the power source 14 through an automatic clutch 15. The automatic clutch core column 25 of the automatic clutch 15 is connected to the generator shaft, and the outer sleeve 21 is connected to the coupling of the diesel engine through the "coupling hole". At the same time, a bearing 29 is provided between the core seat 26 and the outer sleeve 21, and a keyway 30 is provided on the inner wall of the core column 25.

[0044] The core column 25 and the outer sleeve 21 rotate in the same direction, as shown by n1 and n2 in the figure (n1 represents the rotational speed of the diesel engine; n2 represents the rotational speed of the generator). On the inner wall of the automatic clutch outer sleeve 21, three clutch grooves 23 are circumferentially arranged at 120 degrees, and a clutch rod 24 is placed in each clutch groove 23. The connection between the core seat 26 and the outer sleeve 21 depends on the "clutch rod 24" placed in the "clutch groove 23".

[0045] The core seat 26 is arranged in the sink 22 of the outer sleeve 21. The top surface 27 of the clutch groove 23 has a "clutch groove inclined surface", and this inclined surface forms an angle a less than 30 degrees with the tangent direction of the outer circle of the core seat 26. There is a clutch opening 28 near the inner circular surface of the clutch groove 23, and the maximum dimension of the width of this clutch opening 28 is slightly smaller than the diameter of the clutch rod 24, and it does not affect the free movement of the clutch rod 24 in the clutch groove 23.

[0046] Principle of action: When the rotational speed of the generator is the same as that of the diesel engine, that is, n1 = n2, the automatic clutch core seat 26 and the outer sleeve 21 are in a relatively stationary state. At this time, the clutch rod 24 is in a "free state" in the clutch groove 23. When the rotational speed of the diesel engine is higher than that of the generator, that is, n1 > n2, there is a displacement between the core seat 26 and the outer sleeve 21, which is equivalent to the clutch outer sleeve 21 moving in the clockwise direction. At this time, the clutch rod 24 will be stuck between the top surface 27 of the clutch groove 23 and the outer circular surface of the core seat 26 due to the relative displacement between the two. In this way, the clutch realizes a closed connection.

[0047] When the rotational speed of the diesel engine is lower than that of the generator, that is, n1 < n2, there is also a displacement between the core seat 26 and the outer sleeve 21, which is equivalent to the clutch outer sleeve 21 moving in the counterclockwise direction. In this way, the clutch rod 24 will disengage from the angle formed by the clutch groove 23 and the outer surface of the core seat 26. The core seat 26 and the outer sleeve 21 are separated.

[0048] Influence of gravity: Since the clutch rod 24 has a certain movement space in the clutch groove 23, its position will be affected by gravity. For example, when a clutch groove 23 rotates with the "inclined surface" on top and the clutch rod 24 below, the "clutch effect" of this clutch groove 23 will be affected by gravity, thus affecting the clutch effect. However, because three "clutch grooves 23" are circumferentially arranged at 120 degrees on the circumferential surface, although one of them is affected by gravity, the other two can work normally without being affected.

[0049] The reactor includes an upper yoke 41 and a lower yoke 42 which are arranged at intervals. Between the lower yoke 42 and the upper yoke 41, three core units are connected at intervals. The core unit includes: an upper core column 43, a middle core column 44, and a lower core column 45; one end of the upper core column 43 is connected to the upper yoke 41, and the other end of the upper core column 43 extends towards the lower yoke 42; one end of the lower core column 45 is connected to the lower yoke 42, and the other end of the lower core column 45 extends towards the upper yoke 41; the middle core column 44 is arranged between the upper core column 43 and the lower core column 45. There are air gaps 46 between the upper core column 43 and the middle core column 44 and between the lower core column 45 and the middle core column 44. A spacer 47 is arranged in the air gap 46. The coil 48 is wrapped around the outer sides of the upper core column 43, the middle core column 44, and the lower core column 45 and is located between the lower yoke 42 and the upper yoke 41.

[0050] The reactor is designed with a tap-changing structure, which can facilitate the adjustment of the inductance. It is beneficial to obtain different reactance rates, so as to achieve a better harmonic elimination effect. The reactor is provided with a core (core unit). The upper core column 43, the middle core column 44, and the lower core column 45 of the core unit are made of silicon steel sheets, which are magnetic conductive materials. Its function is to play a role in magnetic conduction. Different from ordinary reactors, there is an air gap 46 between them. Since the magnetic permeability of air is much lower than that of silicon steel sheets, it can change the magnetic conduction performance of the entire magnetic circuit, so that the entire magnetic circuit will not cause too rapid a change in magnetic flux when the current in the coil changes greatly. It can reduce the change in inductance (reactance value) caused by too large a change in current.

[0051] During operation, the reactor is connected in series with the synchronous generator and connected to the power supply line. In the present invention, it is connected in series in the network circuit, and the synchronous motor is connected to the reactor through the tap of the reactor. The circuit is equivalent to a T-type filter circuit.

[0052] In an AC circuit, from the perspective of the phase of current and voltage, if the current leads the voltage, it shows capacitive; if the current lags behind the voltage, it shows inductive. In the circuit, the present invention shows inductive, while the synchronous motor has two operating states: when the synchronous generator absorbs the energy of the power grid and operates as a motor, the motor operates in an over-excited state and shows capacitive; when E0 < U, the motor operates in an under-excited state and shows inductive.

[0053] The power source 14 is connected to the generator through an automatic clutch. The power source 14 includes:

[0054] The power source 14 is selected as a fast-starting diesel engine (starting within 5 - 6 seconds).

[0055] The diesel engine is equipped with a starting battery.

[0056] There is a device equipped with a water temperature heater and an oil temperature heater to ensure that the diesel engine block remains above 45°C.

[0057] There is a device for timing the operation of the lubricating oil of the diesel engine and pressurizing it to ensure that all components in the engine body that need lubrication are lubricated with oil.

[0058] There is a sound insulation device for reducing the noise of the "uninterruptible emergency power supply device" to ensure that the noise in the machine room is below 68 decibels.

[0059] A safe, reliable and stable control system is adopted, including the control of the diesel engine, the control of the flywheel energy storage power generation device, etc.

[0060] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An uninterruptible emergency power supply device, characterized in that, It includes a flywheel power device, a generator and a power source connected in sequence; The flywheel power device includes: a base, the base is of a hollow structure; an outer rotor transmission shaft, the outer rotor transmission shaft penetrates through one end of the base; an outer rotor, the outer rotor is arranged inside the base, one end of the outer rotor is connected to the outer rotor transmission shaft, and the other end of the outer rotor is connected to the other end of the base; a flywheel shaft, the flywheel shaft is arranged inside the base, one end of the flywheel shaft is connected to the outer rotor transmission shaft in an eccentric and concentric manner, and the other end of the flywheel shaft is connected to the other end of the outer rotor in an eccentric and concentric manner; a flywheel, the flywheel is arranged on the flywheel shaft, and the flywheel is located inside the outer rotor; an inner and outer rotor coupling degree control mechanism, the inner and outer rotor coupling degree control mechanism is arranged at one end of the base, and the inner and outer rotor coupling degree control mechanism is connected to the outer rotor transmission shaft; an energy replenishment mechanism, the energy replenishment mechanism is arranged at the other end of the base, and the energy replenishment mechanism is connected to the flywheel shaft; the inner and outer rotor coupling degree control mechanism includes: a control shell, the control shell is arranged at one end of the base; a control generator rotor, the control generator rotor is arranged inside the control shell, and the control generator rotor is arranged on the outer rotor transmission shaft; a control generator stator, the control generator stator is arranged inside the control shell, and the control generator stator corresponds to the control generator rotor; the energy replenishment mechanism includes: an energy replenishment shell, the energy replenishment shell is arranged at the other end of the base; an energy replenishment motor rotor, the energy replenishment motor rotor is arranged inside the energy replenishment shell, and the energy replenishment motor rotor is arranged on the flywheel shaft; an energy replenishment motor stator, the energy replenishment motor stator is arranged inside the energy replenishment shell, and the energy replenishment motor stator corresponds to the energy replenishment motor rotor.

2. The uninterruptible emergency power supply device according to claim 1, wherein, Bearings are provided between the outer rotor and the flywheel shaft and between the outer rotor and the base.

3. The uninterruptible emergency power supply device according to claim 1, characterized in that, The generator is connected to the power source through an automatic clutch, and the automatic clutch includes: a jacket, a sunk groove is provided on one side of the jacket; a clutch groove, the clutch groove is arranged on the inner wall of the jacket; a clutch rod, the clutch rod is arranged in the clutch groove; a core seat, the core seat is arranged in the sunk groove; a core column, the core column is connected to the core seat; The top surface of the clutch groove is an inclined surface, and the included angle a between the inclined surface of the clutch groove and the tangent direction of the outer circle of the core seat is 30 degrees; A clutch opening is provided at the bottom surface of the clutch groove, and the size of the clutch opening is smaller than the outer diameter of the clutch rod; The number of the clutch grooves is three, and the three clutch grooves are evenly arranged on the inner wall of the jacket; A bearing is provided between the core seat and the jacket; A key groove is provided on the inner wall of the core column.

4. The uninterruptible emergency power supply device according to claim 1, characterized in that, The generator is connected in parallel with a reactor, and the reactor includes: Upper yoke; lower yoke, the lower yoke is arranged at an interval from the upper yoke; iron core unit, the iron core unit is arranged between the lower yoke and the upper yoke, and both ends of the iron core unit are respectively connected to the lower yoke and the upper yoke; wherein the iron core unit includes: upper iron core column, one end of the upper iron core column is connected to the upper yoke, and the other end of the upper iron core column extends towards the lower yoke; lower iron core column, one end of the lower iron core column is connected to the lower yoke, and the other end of the lower iron core column extends towards the upper yoke; middle iron core column, the middle iron core column is arranged between the upper iron core column and the lower iron core column; coil, the coil is wrapped outside the upper iron core column, the middle iron core column and the lower iron core column, and the coil is located between the lower yoke and the upper yoke; There are air gaps between the upper iron core column and the middle iron core column and between the lower iron core column and the middle iron core column; There are spacer blocks arranged in the air gaps; The material of the iron core unit is magnetic conductive material silicon steel.

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