WO2024051127A1 - Leveling device having energy recovery function, and method therefor - Google Patents

Abstract

A leveling device having an energy recovery function, comprising a leveler (10) and an energy recovery device. The leveler (10) performs leveling by means of electromagnetic induction heating, and the energy recovery device collects wind energy generated during the operation of the leveler (10) and converts the wind energy into electric energy for use by a movable heating trolley (13). The leveler (10) comprises a variable-frequency power supply (11), a water chilling machine (12) and the movable heating trolley (13). The variable-frequency power supply (11) is mounted above the water chilling machine (12), supplies power needed by the water chilling machine (12) via a first electric wire assembly (31), and transmits power into the movable heating trolley (13) via a second electric wire assembly (33). A coaxial transformer and an electromagnetic induction heating coil are mounted in the movable heating trolley (13), wherein the coaxial transformer is used for reducing a current input by the variable-frequency power supply (11) within a safe voltage range, and the water chilling machine (12) is used for transferring heat in the variable-frequency power supply (11) and the movable heating trolley (13). The energy recovery device comprises a power generation part on the front side of the water chilling machine (12) and a current conversion part on the movable heating trolley (13). Further provided is a leveling method having the energy recovery function. The device can collect and store wind energy generated when the leveler performs leveling, and convert the wind energy into electric energy for use by the movable heating trolley, thereby improving the energy utilization rate.

Description

Leveling device with energy recovery function and method thereof Technical field

The invention belongs to the technical field of welding deformation leveling, and specifically relates to a leveling device with energy recovery function and a method thereof.

Background technique

At present, in shipbuilding and ocean engineering, large structural parts are mainly connected by fusion welding. The uneven local heating of steel by the welding arc will inevitably cause stress and deformation of large structural parts. Therefore, flame correction is commonly used to eliminate stress and strain in large structural parts during the production process. Flame correction takes advantage of the physical properties of metal thermal expansion and contraction. It uses a flame to locally heat the metal. The thermal expansion part is restricted by the surrounding cold metal and cannot deform freely, resulting in compression-plastic deformation. After cooling, the compression-plastic deformation remains, causing local shrinkage. That is, accumulated force is generated in the heated area, so that the deformation of the metal component is corrected. However, flame correction is a difficult task. Improper method mastery and temperature control will also cause new and larger deformations of components. It requires higher experience of the operator, and toxic gases will be produced during the heating process, which is harmful to the environment and The physical health hazards of operating workers are greater. In addition, the labor intensity of water and fire correction is high and the environment is poor, so fewer and fewer people are willing to engage in this industry.

Electromagnetic induction heating technology is a new type of heating technology. It uses the principle of high-frequency electric heating to convert alternating current into high-frequency current to generate a high-frequency magnetic field. When the magnetic field lines in the magnetic field act on the outer shell of the iron container through the insulating plate, the magnetic field lines are Cutting generates a large number of small eddy currents, which causes the iron container to heat itself rapidly, thereby achieving the purpose of heating. This technology has the advantages of cleanness, high efficiency, and easy operation, so it has broad application prospects in the industrial field. However, its market share is not very high. The reason is that during the implementation of this technology, the power is relatively large and the loss is relatively high. High, which is not conducive to achieving the goals of energy conservation and emission reduction.

Chinese patent (202110031588.7) discloses an intelligent mobile electromagnetic induction leveling equipment and method, and Chinese patent (201721653101.4) discloses a mobile heater for an induction heating leveling machine. Both Chinese patents use electric Magnetic induction heating technology performs leveling work on the welding deformation area of the steel plate. It uses the principle of high-frequency electric heating to convert alternating current into high-frequency current and generates a high-frequency magnetic field, thereby generating eddy currents in the welding deformation area of the steel plate, realizing electromagnetic induction heating. Purpose; Chinese patent (202110386221.7) discloses an integrated method for automatic induction leveling of ship plate welding deformation. On the basis of using electromagnetic induction heating to level the ship plate, the AGV car identifies the work area, and then plans the AGV car for electromagnetic induction heating. Leveling route to achieve automatic leveling effect. However, the above technologies are all based on electromagnetic induction technology to achieve automatic leveling, but they cannot overcome the shortcomings of electromagnetic induction heating technology such as high power consumption, large losses and low efficiency.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a leveling device with energy recovery function and a working method thereof. The invention can convert the wind energy generated by the heat dissipation of the chiller into electric energy during the process of leveling the weld, and realize the leveling installation. The purpose of powering the centrally located mobile heating trolley is to improve the energy utilization efficiency of the leveling device.

In order to achieve the above objects, the present invention adopts the following technical solutions.

The invention provides a leveling device with energy recovery function, which includes an electrically connected leveling machine and an energy recovery device; the leveling machine operates on the leveling area through the principle of electromagnetic induction heating, and the energy recovery device collects the energy when the leveling machine is working. The wind energy generated during the process is converted into electrical energy for use by the leveler’s mobile heating trolley;

The leveling machine includes a variable frequency power supply, a water chiller, and a mobile heating trolley; the chiller is connected to the variable frequency power supply through the first water pipe assembly, and the variable frequency power supply is connected to the mobile heating trolley through the second water pipe assembly; the variable frequency power supply is installed on the water chiller. Above, the power required by the water chiller is provided through the first wire assembly, which is used to convert the input current into a high-frequency and high-voltage form, and transmits it to the mobile heating car through the second wire assembly; there is an embedded on-chip system inside the variable frequency power supply. , used to control energy recovery devices, chillers and mobile heating cars; the mobile heating car is equipped with a coaxial transformer and an electromagnetic induction heating coil. The coaxial transformer is used to reduce the input current of the variable frequency power supply to a safe voltage range, and the electromagnetic induction The heating coil performs leveling operations through the principle of electromagnetic induction; the chiller is used to transfer the heat in the variable frequency power supply and the mobile heating car;

The energy recovery device includes a power generation part installed on the front side of the chiller and a current conversion part installed on the mobile heating trolley of the leveler.

Further, the power generation part of the energy recovery device includes a power generation device casing, an impeller, a frame, a speed-increasing gearbox, a brake, and a generator; the impeller is installed on the generator casing through a bearing; the power generation device casing is installed on the frame with " The center position of the "ten" side; the generator is installed inside the casing of the power generation device, and is connected to the impeller through the brake and speed increaser.

Specifically, the current conversion part of the energy recovery device includes a rectifier, a battery, and an inverter; the battery is installed on the mobile heating car of the leveler, and the rectifier and inverter are installed on both sides of the battery. The rectifier adopts a three-phase Y-type connection: the current flows in through terminal a, passes through thyristor vs ₁ , resistor R and thyristor vs ₂ , and flows out from terminal c; it flows in from terminal b, passes through thyristor vs ₃ , resistor R and thyristor vs ₄ , flowing out from terminal c; the current flows in from terminal c, passes through thyristor vs ₅ , resistor R and thyristor vs ₆ , and flows out from terminal b; using double narrow pulse or wide pulse trigger, its phase shift range is 0° to 120° , the maximum conduction angle is 120°.

Specifically, in the described inverter, under pure resistive load, the diodes D ₁ , D ₂ , D ₃ , D ₄ , D ₅ and D ₆ are not conducting; when the switches T ₁ , T ₅ and T ₆ are conducting When R ₁ and R ₃ are connected in parallel, the current flows out from the positive electrode, flows through the resistors R ₁ and R ₃ at the same time, then flows through the resistor R ₂ and the switch T ₆ , and finally flows into the negative electrode; when the switches T ₁ , T ₂ , and T ₆ conduct When turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode. After flowing through the resistor R ₁ , one path passes through the resistor R ₂ and the switch T ₆ , and then flows into the negative electrode. The other path passes through the resistor R ₃ and the switch T ₂ , and then flows into the negative electrode. ; When the switches T ₁ , T ₂ , and T ₃ are turned on, R ₁ and R ₂ are connected in parallel, and the current flows out from the positive electrode and flows through the resistors R ₁ and R ₂ at the same time, then flows through the resistor R ₂ and switch T ₂ , and finally flows into Negative pole; when the switches T ₂ , T ₃ , and T ₄ are turned on, R ₁ and R ₃ are connected in parallel, and the current flows out from the positive pole, flows through the resistor R ₂ , passes through the resistor R ₃ and the switch T ₂ , and then flows into the negative pole. After passing through the resistor R ₁ and the switch T ₄ , it flows into the negative electrode; when the switches T ₃ , T ₄ , and T ₅ are turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode and flows through the resistors R and R ₃ at the same time. It flows through resistor R ₁ and switch T ₄ and finally flows into the negative pole; when switches T ₄ , T ₅ , and T ₆ are turned on, R ₁ and R ₂ are connected in parallel, and the current flows from the positive pole Outflow, after flowing through resistor R ₃ , one path passes through resistor R ₁ and switch T ₄ , and then flows into the negative electrode. The other path passes through resistor R ₂ and switch T ₆ , and then flows into the negative electrode.

Specifically, the variable frequency power supply is packaged separately and placed above the outside of the water chiller.

Furthermore, the embedded system inside the variable frequency power supply controls the charging and discharging processes of the battery of the energy recovery device in the following manner: when the battery of the energy recovery device has sufficient power, it is directly used by the mobile heating car of the leveler. ; When the power is insufficient, the embedded system inside the leveling machine's variable frequency power supply directly supplies power to the leveling machine's mobile heating car.

A leveling method with energy recovery function of the present invention includes the following steps:

Step 1. Connect the power supply, start the leveler, rotate the knob of the variable frequency power supply, and turn on the variable frequency power supply;

Step 2. Press the button on the variable frequency power supply to start the chiller;

Step 3: Push the leveling machine to the area that needs to be worked, start the heating function, and transmit the high-frequency AC current to the variable frequency power supply through the transmission line. After the current is converted by the frequency converter, it is transmitted to the mobile heating car. The mobile heating car is heated by electromagnetic induction. Leveling work based on principles;

Step 4. The chiller starts to work. The temperature emitted by the leveler's variable frequency power supply and mobile heating car is transferred to the refrigerant through water circulation in the evaporator. After the refrigerant releases heat in the condenser, it returns to the evaporator. , complete the refrigerant cycle and the entire heat dissipation process;

Step 5: The energy recovery device begins to collect the wind energy generated by the chiller during the heat dissipation process, converts it into three-phase alternating current through the generator, converts it into direct current through the rectifier, and stores it in the battery;

Step 6. After the weld is leveled, the mobile heating car moves to the next area for leveling work; when the battery power is low, the embedded on-chip system directly supplies power through the frequency conversion power supply to allow the mobile heating car to work normally; when the battery power is low When sufficient, the embedded on-chip system controls the energy recovery device to provide power for the mobile heating car;

Step 7. When the leveling work of the entire area is completed, turn the knob on the variable frequency power supply to disconnect the power supply, shut down the entire device, and drain the water from the chiller.

Compared with the existing technology, the present invention has the following advantages and beneficial effects:

1. A leveling device with energy recovery function of the present invention can collect and store the wind energy generated by the leveling machine during leveling operations, and convert it into electrical energy for use by the mobile heating car, reducing the need for the leveling device to Reduce energy loss during work and improve energy utilization.

2. The present invention adopts an energy recovery device, which can convert the recovered energy into electrical energy and store it in the battery for use by the mobile heating car; when the battery power is insufficient, the frequency conversion power supply can directly supply power to ensure the normal operation of the mobile heating car, thereby ensuring the normal operation of the mobile heating car. Increase the safety and reliability of the leveling device.

3. The energy recovery device used in the present invention has a simple structure, which improves energy utilization and facilitates inspection and maintenance.

4. The present invention places the variable frequency power supply on top of the water chiller, which can prevent the temperature inside the chiller from affecting the variable frequency power supply. Noise, and at the same time, it can also avoid safety hazards caused by water leakage from the chiller to the variable frequency power supply.

5. The energy recovery device of the present invention adopts a cylindrical frame, which can reduce the diffusion direction of wind energy and enhance the utilization efficiency of wind energy.

Description of the drawings

Figure 1 is a schematic structural front view of a leveling device according to an embodiment of the present invention.

Figure 2 is a schematic structural rear view of a leveling device according to an embodiment of the present invention.

Figure 3 is a schematic structural diagram of a chiller according to an embodiment of the present invention.

Figure 4(a), (b), and (c) are schematic structural diagrams of an energy recovery device according to an embodiment of the present invention.

Figure 5 is a schematic diagram of a rectifier according to an embodiment of the present invention.

Figure 6 is a schematic diagram of an inverter according to an embodiment of the present invention.

Figure 7 is a working flow chart of a leveling device with energy recovery function of the present invention.

Among them, leveling machine 10, variable frequency power supply 11, chiller 12, mobile heating car 13, power generation device casing 21, impeller 22, frame 23, bearing 24, speed-increasing gearbox 25, brake 26, generator 27, rectifier 28, Battery 29, inverter 210, first wire assembly 31, first water pipe assembly 32, second wire assembly 33, second water pipe assembly 34.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a leveling device with energy recovery function of the present invention includes a leveling machine 10 and an energy recovery device. The leveler 10 operates on the area to be leveled based on the principle of electromagnetic induction heating. The energy recovery device collects the wind energy generated by the leveler 10 during its operation and converts it into electrical energy for use by the mobile heating trolley 13 of the leveler 10 ; The leveling machine 10 is electrically connected to the energy recovery device. The energy recovery device includes a power generation part installed on the front side of the chiller 12 and a current conversion part installed on the mobile heating car 13 of the leveling machine 10 for collecting water from the chiller. 12 and convert the wind energy generated into electrical energy; as shown in Figure 7, the system working structure block diagram of a leveling device with energy recovery function of the present invention. The embedded system inside the leveling machine variable frequency power supply 11 can not only control the leveling machine 10 to perform leveling work, but also control the charging and discharging processes of the battery 29 of the energy recovery device. When the battery 29 of the energy recovery device has sufficient power, It can be directly used by the mobile heating car 13 of the leveling machine 10. When the power is insufficient, the embedded system inside the leveling machine variable frequency power supply 11 can directly supply power to the mobile heating car 13 of the leveling machine 10; the charging process of the battery 29 It refers to the process in which the energy recovery device converts the recovered energy into electrical energy through the generator 27 and stores the current in the battery 29 through the rectifier 28. The discharge process of the battery 29 refers to the process in which the battery 29 supplies power to the mobile heating car 13 through the inverter 210. process. Its working principle is: the leveling machine 10 performs leveling operations through the principle of electromagnetic induction, in which the chiller 12 cools down the variable frequency power supply 11 and the mobile heating car 13; the energy recovery device recovers the energy generated when the chiller 12 of the leveling machine 10 cools down. Wind energy is converted into electrical energy for use by the mobile heating car 13 of the leveler 10, thereby improving energy utilization efficiency.

As shown in Figure 2, the leveler 10 includes a variable frequency power supply 11, a chiller 12, a mobile heating car 13, a first The electric wire assembly 31, the first water pipe assembly 32, the second electric wire assembly 33, and the second water pipe assembly 34; the chiller 12 is connected to the variable frequency power supply 11 through the first water pipe assembly 31, and the variable frequency power supply 11 is connected to the mobile heating car through the second water pipe assembly 34. 13 are connected to form a loop to cool down the variable frequency power supply 11 and the mobile heating car 13; the variable frequency power supply 11 is installed above the chiller 12 (the variable frequency power supply 11 is packaged separately and placed above the outside of the chiller 12) through the first wire assembly 31 provides the power required by the chiller 12, and is mainly used to convert the input current into a high-frequency and high-voltage form, and transmit it to the mobile heating car 13 through the second wire assembly 33. The variable frequency power supply 11 is equipped with an embedded on-chip system for controlling the energy recovery device, the chiller 12 and the mobile heating car 13 . The mobile heating car 13 is equipped with a coaxial transformer and an electromagnetic induction heating coil. The coaxial transformer is used to reduce the current transmitted from the variable frequency power supply 11 to a safe voltage range. The electromagnetic induction heating coil performs leveling operations based on the principle of electromagnetic induction. Its working principle is: after the three-phase current passes through the variable frequency power supply 11, it is converted into a high-frequency and high-voltage form, and then the high-frequency and high-voltage current is transmitted to the coaxial transformer and electromagnetic induction heating coil in the mobile heating car 13. The coaxial transformer The high-frequency and high-voltage current is converted into a high-frequency and low-voltage current. When the current passes through the electromagnetic induction heating coil, a strong induced current, that is, eddy current will be generated, thereby realizing the leveling operation; the chiller 12 is used to transfer the variable frequency power supply 11 and the mobile heating car 13 of heat.

As shown in Figure 3, the chiller 12 includes three interconnected systems: a refrigerant circulation system, a water circulation system, and an electrical automatic control system. The refrigerant circulation system refers to: the liquid refrigerant in the evaporator absorbs the heat in the water and It begins to evaporate, and eventually the liquid refrigerant completely evaporates into a gaseous state, and is then sucked into the condenser by the compressor. The gaseous refrigerant releases heat through the condenser, condenses into a liquid, and then is throttled by the expansion valve and becomes low-temperature and low-pressure refrigerant before evaporating. The water circulation system refers to the water pump pumping water from the water tank to the equipment that needs to be cooled (mobile heating car 13, etc.). After the water takes away the heat, the temperature rises, and the heat is transferred to the evaporator. After the refrigerant is released, it returns to the tank to complete the water cycle; the electrical automatic control system mainly includes the power supply part and the automatic control part. The power supply part refers to the supply of power to each component in the chiller, and the automatic control part refers to the thermostat, pressure The combination of protection, etc. makes the chiller safer in use.

As shown in Figures 4(a), (b), and (c), an energy recovery device of the present invention includes a power generation part installed on the front side of the chiller 12 and a mobile heating car installed on the leveler 10. 13, the current conversion part and the power generation part are shown in Figure 4(a) and (b), including the power generation device casing 21, impeller 22, frame 23, bearing 24, speed-increasing gearbox 25, brake 26, generator 27, As shown in current conversion part 4(c), it includes a rectifier 28, a battery 29, and an inverter 210. The impeller 22 is installed on the generator casing 21 through the bearing 24 for collecting wind energy; the generator casing 21 is installed at the center of the frame 23 on the side with the "X" shape. The generator 27 is connected to the impeller 22 through the brake 26 and the speed increaser 25 and is used to convert the energy collected by the impeller 22 into electrical energy. The speed increase gearbox 25 can improve the utilization effect of wind energy. The brake 26 is used for emergency braking and protection. The generator 27, the speed-increasing gearbox 25, the brake 26, and the generator 27 are installed inside the power generation device housing 21. The battery 29 is installed on the mobile heating car 13 of the leveling machine 10 for storing electrical energy; the rectifier 28 and the inverter 210 are installed on both sides of the battery 29 for converting the frequency, phase and other physical quantities of the current.

As shown in Figure 5, a schematic circuit diagram of a rectifier 28 of the present invention uses a three-phase Y-shaped connection. The current flows in through terminal a, passes through thyristor vs ₁ , resistor R and thyristor vs ₂ , and flows out from terminal c; the current flows in from terminal b, passes through thyristor vs ₃ , resistor R and thyristor vs ₄ , flowing out from terminal c; current flows in from terminal c, passes through thyristor vs ₅ , resistor R and thyristor vs ₆ , and flows out from terminal b. It is helpful to reduce the harmonics in the transformer magnetic flux and electromotive force. In addition, the rectifier circuit must be triggered with double narrow pulses or wide pulses with a phase shift range of 0° to 120° and a maximum conduction angle of 120°

As shown in Figure 6, the circuit schematic diagram of an inverter 210 of the present invention; under pure resistive load, diodes D ₁ , D ₂ , D ₃ , D ₄ , D ₅ and D ₆ do not conduct; when the switch When T ₁ , T ₅ , and T ₆ are turned on, R ₁ and R ₃ are connected in parallel, and the current flows out from the positive electrode and flows through the resistors R ₁ and R ₃ at the same time, then flows through the resistor R ₂ and the switch T ₆ , and finally flows into the negative electrode; when When switches T ₁ , T ₂ , and T ₆ are turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode. After flowing through the resistor R ₁ , one way passes through the resistor R ₂ and the switch T ₆ , then flows into the negative electrode, and the other way passes through the resistor. After R ₃ and switch T ₂ , it flows into the negative electrode; when the switches T ₁ , T ₂ , and T ₃ are turned on, R ₁ and R ₂ are connected in parallel, and the current flows out from the positive electrode and flows through the resistors R ₁ and R ₂ at the same time, and then flows through Resistor R ₂ and switch T ₂ finally flow into the negative electrode; when switches T ₂ , T ₃ , and T ₄ are turned on, R ₁ and R ₃ are connected in parallel, and the current flows out from the positive electrode, flows through resistor R ₂ , and then passes through resistor R ₃ After switching with switch T ₂ , it flows into the negative electrode, and the other channel flows into the negative electrode after passing through resistor R ₁ and switch T ₄ ; when switches T ₃ , T ₄ , and T ₅ are turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode. At the same time, it flows through resistors R and R ₃ , then flows through resistor R ₁ and switch T ₄ , and finally flows into the negative electrode; when switches T ₄ , T ₅ , and T ₆ are turned on, R ₁ and R ₂ are connected in parallel, and the current flows out from the positive electrode. After flowing through resistor R ₃ , one path passes through resistor R ₁ and switch T ₄ , and then flows into the negative electrode. The other path passes through resistor R ₂ and switch T ₆ , and then flows into the negative electrode. Its working mode is 180-degree conduction mode: the conduction angle of each bridge arm is 120 degrees; the upper and lower bridge arms of the same half bridge conduct electricity, and the conduction angles of each phase differ by 120 degrees; at any moment, three bridge arms conduct electricity simultaneously. Pass, each transformation is performed between the upper and lower bridge arms of the same phase. Therefore, by controlling the switching elements in sequence, the output amplitude can be half of the input voltage. The three-phase output waveforms are the same, except that the output phases differ by 120 degrees. In this way, a three-phase AC power supply can be obtained.

The above-mentioned method of using the leveling device with energy recovery function includes the following steps:

Step 1: Connect the power supply, start the leveler 10, rotate the knob of the variable frequency power supply 11, and turn on the variable frequency power supply 11;

Step 2: Press button 11 on the variable frequency power supply to start the chiller 12;

Step 3: Push the leveler 10 to the area that needs to be worked, start the heating function, and transmit the high-frequency AC current to the variable frequency power supply through the transmission line. After the current is converted by the frequency conversion, it is transmitted to the mobile heating car 13, and the mobile heating car 13 passes Leveling operation is carried out based on the principle of electromagnetic induction heating;

Step 4: The chiller 12 starts to work, and the temperature emitted by the variable frequency power supply 11 of the leveler 10 and the mobile heating car 13 is transferred to the refrigerant through water circulation in the evaporator. After the refrigerant releases heat in the condenser, it returns into the evaporator to complete the refrigerant circulation and the entire heat dissipation process;

Step 5: The energy recovery device begins to collect the wind energy generated during the heat dissipation process of the chiller 12, converts it into three-phase alternating current through the generator 27, converts it into direct current through the rectifier 28, and stores it in the battery 29.

Step 6: After the weld seam is leveled, the mobile heating car 13 moves to the next area for leveling work; at this time, when the battery 29 has low power, the embedded on-chip system directly supplies power through the variable frequency power supply 11, allowing the mobile heating car to 13 works normally; when the battery 29 has sufficient power, the embedded on-chip system controls the energy recovery device to provide power for the mobile heating car 13.

Step 7: When the leveling work of the entire area is completed, rotate the knob on the variable frequency power supply 11, disconnect the power supply, close the entire device, and drain the water in the chiller 12.

In addition, when the wind speed is too high, causing the generator 27 to rotate too fast, or the energy recovery device fails, the embedded system of the brake 26 will cause the brake 26 to brake urgently to avoid damage to parts and cause greater losses. .

Claims (8)

1. A leveling device with energy recovery function, which is characterized by including an electrically connected leveling machine (10) and an energy recovery device; the leveling machine (10) operates on the leveling area through the principle of electromagnetic induction heating, and energy recovery The device collects the wind energy generated by the leveling machine (10) during the working process and converts it into electrical energy for use by the mobile heating car (13) of the leveling machine (10);

   The leveler (10) includes a variable frequency power supply (11), a chiller (12), and a mobile heating car (13); the chiller (12) is connected to the variable frequency power supply (11) through the first water pipe assembly (31) , the variable frequency power supply (11) is connected to the mobile heating car (13) through the second water pipe assembly (34); the variable frequency power supply (11) is installed above the water chiller (12), and provides the water chiller (12) through the first wire assembly (31). 12) The required power supply is used to convert the input current into a high-frequency and high-voltage form and transmit it to the mobile heating car (13) through the second wire assembly (33); the variable frequency power supply (11) is equipped with an embedded on-chip The system is used to control the energy recovery device, the chiller (12) and the mobile heating car (13); the mobile heating car (13) is equipped with a coaxial transformer and an electromagnetic induction heating coil, and the coaxial transformer is used to convert the variable frequency power supply (11 ) input current is reduced to a safe voltage range, and the electromagnetic induction heating coil performs leveling operations through the principle of electromagnetic induction; the chiller (12) is used to transfer the heat from the variable frequency power supply (11) and the mobile heating car (13);

   The energy recovery device includes a power generation part installed on the front side of the chiller (12) and a current conversion part installed on the mobile heating car (13) of the leveler (10).
2. A leveling device with energy recovery function according to claim 1, characterized in that the power generation part of the energy recovery device includes a power generation device shell (21), an impeller (22), a frame (23), Speed-increasing gearbox (25), brake (26), generator (27); the impeller (22) is installed on the generator housing (21) through the bearing (24); the power generation device housing (21) is installed on the frame (23) It has a central position on one side of the "X"; the generator (27) is installed inside the power generation device casing (21), and is connected to the impeller (22) through the brake (26) and the speed increaser (25).
3. A leveling device with energy recovery function according to claim 1, characterized in that the current conversion part of the energy recovery device includes a rectifier (28), a battery (29), and an inverter (210) ; The battery (29) is installed on the mobile heating trolley (13) of the leveling machine (10), and the rectifier (28) and the inverter (210) are installed on both sides of the battery (29).
4. A leveling device with energy recovery function according to claim 3, characterized in that the rectifier (28) adopts a three-phase Y-shaped connection method: the current flows in through the a terminal, and passes through the thyristor vs ₁ and the resistor R and thyristor vs ₂ , flowing out from terminal c; flowing in from terminal b, passing through thyristor vs ₃ , resistor R and thyristor vs ₄ , flowing out from terminal c; current flowing in from terminal c, passing through thyristor vs ₅ , resistor R and thyristor vs ₆ , flows out from terminal b; using double narrow pulse or wide pulse trigger, its phase shift range is 0° to 120°, and the maximum conduction angle is 120°.
5. A leveling device with energy recovery function according to claim 3, characterized in that, in the inverter (210), under pure resistive load, diodes D ₁ , D ₂ , D ₃ , D ₄ , D ₅ and D ₆ are not conductive; when switches T ₁ , T ₅ and T ₆ are turned on, R ₁ and R ₃ are connected in parallel, and the current flows out from the positive electrode, flows through the resistors R ₁ and R ₃ at the same time, and then flows through the resistor R ₂ and switch T ₆ finally flow into the negative electrode; when switches T ₁ , T ₂ , and T ₆ are turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode and flows through the resistor R ₁ . After passing through the resistor R ₂ and the switch T ₆ , it flows into the negative electrode. The other path passes through the resistor R ₃ and the switch T ₂ and flows into the negative electrode. When the switches T ₁ , T ₂ , and T ₃ are turned on, R ₁ and R ₂ are connected in parallel, and the current It flows out from the positive electrode, flows through resistors R ₁ and R ₂ at the same time, then flows through resistor R ₂ and switch T ₂ , and finally flows into the negative electrode; when switches T ₂ , T ₃ , and T ₄ are turned on, R ₁ and R ₃ are connected in parallel, The current flows out from the positive electrode, and after flowing through the resistor R ₂ , one path passes through the resistor R ₃ and the switch T ₂ , and then flows into the negative electrode. The other path passes through the resistor R ₁ and the switch T ₄ , and then flows into the negative electrode; when the switches T ₃ , T ₄ , T ₅ is turned on, R ₂ and R ₃ are connected in parallel, and the current flows out from the positive electrode, flows through the resistors R and R ₃ at the same time, then flows through the resistor R ₁ and the switch T ₄ , and finally flows into the negative electrode; when the switches T ₄ , T ₅ , T When ₆ is turned on, R ₁ and R ₂ are connected in parallel, and the current flows out from the positive electrode. After flowing through the resistor R ₃ , one path passes through the resistor R ₁ and the switch T ₄ , and then flows into the negative electrode. The other path passes through the resistor R ₂ and the switch T ₆ . flows into the negative electrode.
6. A leveling device with energy recovery function according to claim 1, characterized in that the variable frequency power supply (11) is packaged separately and is arranged above and outside the chiller (12).
7. A leveling device with energy recovery function according to claim 1 or 6, characterized in that the embedded system inside the variable frequency power supply (11) controls the battery (29) of the energy recovery device in the following manner The charging process and discharging process: when the battery (29) of the energy recovery device has sufficient power, it is directly used by the mobile heating car (13) of the leveler (10); when the power is insufficient, the leveler's variable frequency power supply (11 ) The embedded system inside directly supplies power to the mobile heating car (13) of the leveler (10).
8. A leveling method with energy recovery function, characterized in that the leveling device according to any one of claims 1 to 7 is used, and the method includes the following steps:

   Step 1. Connect the power supply, start the leveler (10), rotate the knob of the variable frequency power supply (11), and turn on the variable frequency power supply (11);

   Step 2. Press the button (11) on the variable frequency power supply to start the chiller (12);

   Step 3. Push the leveling machine (10) to the area that needs to be worked, start the heating function, and transmit the high-frequency AC current to the variable frequency power supply through the transmission line. After the current is converted by the frequency conversion, it is transmitted to the mobile heating car (13) and moves The heating car (13) performs leveling operations based on the principle of electromagnetic induction heating;

   Step 4. The chiller (12) starts to work, and the temperature emitted by the variable frequency power supply (11) of the leveler (10) and the mobile heating car (13) is transferred to the refrigerant through water circulation in the evaporator. After the heat is released in the condenser, it returns to the evaporator to complete the refrigerant cycle and the entire heat dissipation process;

   Step 5: The energy recovery device begins to collect the wind energy generated during the heat dissipation process of the chiller (12), converts it into three-phase alternating current through the generator (27), converts it into direct current through the rectifier (28), and stores it in the battery (29) ;

   Step 6: After the weld seam is leveled, the mobile heating car (13) moves to the next area for leveling work; when the battery (29) has low power, the embedded on-chip system directly supplies power through the variable frequency power supply (11), allowing The mobile heating car (13) works normally; when the battery (29) has sufficient power, the embedded on-chip system controls the energy recovery device to provide power for the mobile heating car (13);

   Step 7. When the leveling work of the entire area is completed, turn the knob on the variable frequency power supply (11) to disconnect the power, shut down the entire device, and drain the water in the chiller (12).