A self-adaptive output adjusting device with high torque and high load impact resistance for a crushing working condition over 10000 hp

Abstract

The application provides a self-adaptive output adjusting device with high torque and high load impact resistance under a crushing condition of more than 10000 hp, which comprises a power supply cabinet, a main control cabinet, a heat exchange unit, a cooling tower part and a short circuit switch, the main control cabinet comprises a signal processor, a man-machine interface, a servo driver, an analog signal sampling unit and an auxiliary machine control loop, and the heat exchange unit comprises a motor and a polar plate transmission member, a cooling circulation pipeline, a temperature sampling device, a liquid level sampling device, a solubility sampling device and a dissolved liquid stirring pump. The application can avoid motor material blockage, buffer the impact from the load, limit the short-time current abnormal fluctuation within the allowable range and prevent the tripping of the upper power supply device.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of motor output adjusting devices, in particular to a high-torque self-adaptive output adjusting device for resisting load impact under a crushing working condition of more than 10000 hp. BACKGROUND

[0002] Conversion of heat loss in the motor: when the motor is directly connected with the driven equipment (not through a shaft coupling, a belt or other transmission, but through a shaft coupling or direct transmission), the shaft power of the equipment is equal to the output power of the motor.

[0003] The rated power of the motor on the motor nameplate is the mechanical power output by the motor shaft, which is a rated value. If you want to know the real-time mechanical power output, it is the active electric power of the motor multiplied by an efficiency (which is the internal loss of the motor).

[0004] Most of the running modes of the wound rotor motor on the market are soft start bypass, and the equipment is in a long-term rated running current state:

[0005] The motor maintains the rated current output, forcibly overloads when the material is blocked, forcibly generates mechanical impact to trigger the peak value of the locked-rotor current, causes the preset protection parameters to act, the shaft coupling is damaged by the stress of the load and the strong blockage of the two ends of the motor, causes production interruption, and under the condition that the mechanical running inertia is insufficient to break the material, the material needs to be processed first, thereby affecting the production efficiency. SUMMARY

[0006] In order to overcome the defects of the prior art, the present application provides a high-torque self-adaptive output adjusting device for resisting load impact under a crushing working condition of more than 10000 hp, to solve the problem of production interruption caused by the stress damage of the shaft coupling by the load and the strong blockage of the two ends of the motor, and under the condition that the mechanical running inertia is insufficient to break the material, the material needs to be processed first, thereby affecting the production efficiency.

[0007] A high-torque self-adaptive output adjusting device for resisting load impact under a crushing working condition of more than 10000 hp, comprising a power cabinet, a main control box, a heat exchange unit, a cooling tower part and a short-circuit switch, wherein the main control box comprises a signal processor, a man-machine interface, a servo driver, an analog signal sampling unit and an auxiliary machine control loop, the heat exchange unit comprises a motor and a polar plate transmission member, a cooling circulation pipeline, a temperature sampling device, a liquid level sampling device, a solubility sampling device and a dissolving liquid stirring pump.

[0008] Preferably, the main control box can control the power cabinet to close and provide power, the heat exchange unit can absorb the energy generated in the load impact process, the cooling tower part can realize heat exchange and dissipation, and can ensure the sustainability of the work of the heat exchange unit, and the short-circuit switch directly shorts the rotor side winding, thereby realizing full-speed operation of the motor.

[0009] Preferably, the main box can control the operation of the whole set of equipment through the signal of the analog signal sampling unit.

[0010] Preferably, the signal processor can sample the measured data fed back by various sensors on site, and the servo driver drives the motor and the polar plate transmission member, which can travel a specified interval in the rotor loop of the crushing host.

[0011] Preferably, the man-machine interface can intuitively feed back the data state of each monitoring link of the whole set of equipment.

[0012] Preferably, the servo driver can track the change rate of the load in real time through the transmission support structure in the heat exchange unit, and complete the goal of resisting load impact.

[0013] Preferably, the analog signal sampling unit, temperature sampling, liquid level sampling and solubility sampling together constitute a closed-loop control loop of signal feedback, which converts various non-electric quantities into digital signals, quantifies specific operation state indicators, and accurately feeds back the basic data required for calculation.

[0014] Preferably, the motor and the polar plate transmission member drag the smooth reciprocating motion of the rotor side series electrolysis polar plate.

[0015] Preferably, the cooling circulation pipeline serves as a carrier for heat dissipation in the heat exchange unit, and can realize the temperature difference energy transmission between the low-temperature circulating water of the cooling tower part and the high-temperature electrolyte in the heat exchange unit.

[0016] Preferably, the solubility sampling unit can realize electrolyte solubility sampling of the equipment during non-working time.

[0017] The beneficial effects of the present application are:

[0018] 1. It can avoid motor jamming, buffer impact from load, and limit short-term current abnormal fluctuation within the allowable range without causing tripping of the upper power supply equipment.

[0019] 2. Utilize the precise positioning and rapid response characteristics of servo drive to realize multiple closed-loop control of current, temperature, speed and heat exchange. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural arrangement drawing of the present application.

[0021] Figure 2 It is the side view of the present application.

[0022] Figure 3 It is the electrical schematic diagram of the present application.

[0023] Figure 4 Electrical schematic diagram of the servo drive of the present application.

[0024] Figure 5 Electrical schematic diagram of the high-voltage switch cabinet of the present application.

[0025] Figure 6 Electrical schematic diagram of the working power supply of the present application.

[0026] In the figure: 1, power cabinet; 2, main control box; 3, heat exchange unit; 4, cooling tower part; 5, short-circuit switch; 6, signal processor; 7, human-machine interface; 8, servo driver; 9, analog signal sampling unit; 10, auxiliary machine control loop; 11, motor and polar plate transmission component; 12, cooling circulation pipeline; 13, temperature sampling; 14, liquid level sampling; 15, solubility sampling; 16, dissolved liquid stirring pump. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below with specific reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure in the specification. The present application can also be implemented or applied in other different specific embodiments, and the details in the specification can be modified or changed in various ways based on different views and applications without departing from the spirit of the present application.

[0028] REFERENCE Figures 1-6 A load impact high-torque self-adaptive output regulating device for crushing working conditions exceeding 10,000 hp, comprising a power cabinet, a main control box, a heat exchange unit, a cooling tower part, and a short-circuit switch. The main control box comprises a signal processor, a human-machine interface, a servo driver, an analog signal sampling unit, and an auxiliary machine control loop. The heat exchange unit comprises a motor and polar plate transmission component, a cooling circulation pipeline, temperature sampling, liquid level sampling, solubility sampling, and a dissolved liquid stirring pump.

[0029] As a preferred embodiment, the main control box can control the power cabinet to close and thus provide power. The heat exchange unit can absorb the energy generated during the load impact process. The cooling tower part can realize heat exchange and dissipation and ensure the sustainability of the heat exchange unit. The short-circuit switch can directly short the rotor side winding under the condition of small load change rate, thereby realizing full-speed operation of the motor.

[0030] As a preferred embodiment, the main control box can control the operation of the entire device by sampling the signals in the field through the analog signal sampling unit and other controlled objects. The resistance value of the rotor of the main motor in the crushing working condition is increased to absorb energy during load impact, ensure that the motor operates within the allowed setting value, and continuously operate without jamming and shutdown.

[0031] As a preferred embodiment, the signal processor can sample the measured data fed back by each sensor on site to provide a basis for the next action of the adjusting device, and through internal program calculation and processing, finally drive the motor and polar plate transmission member by the servo driver, so that the specified interval can be traveled in the rotor loop of the crushing host, the value of the rotor resistance is changed, and the stator loop current is changed, thereby absorbing the changing fluctuation from the load side.

[0032] As a preferred embodiment, the man-machine interface can intuitively feedback the data state of each monitoring link of the whole unit operation, has adaptive adjustment control and short-circuit switch bypass operation modes according to load changes, and the given alarm limit value can be adjusted according to the actual operation characteristics on site.

[0033] As a preferred embodiment, the servo driver can be quickly and accurately positioned through the transmission support structure in the heat exchange unit, the action response is timely, the change rate of the load is tracked in real time, and the goal of resisting load impact is achieved.

[0034] As a preferred embodiment, the analog signal sampling unit, the temperature sampling, the liquid level sampling and the solubility sampling together constitute a closed-loop control loop of signal feedback, various non-electric quantities are converted into digital signals, the specific operation state indicators are quantified, and the basic data required for calculation is accurately fed back.

[0035] As a preferred embodiment, the motor and polar plate transmission member drag the smooth reciprocating motion of the rotor side series electrolytic polar plate, realize accurate and dynamic adjustment of the resistance between the polar plates, and efficiently and quickly follow the change of the load to output mechanical transmission.

[0036] As a preferred embodiment, the cooling circulation pipeline serves as a carrier for heat dissipation in the heat exchange unit, and can realize the temperature difference energy transmission between the low-temperature circulating water of the cooling tower part and the high-temperature electrolyte in the heat exchange unit.

[0037] As a preferred embodiment, the solubility sampling unit can realize electrolyte solubility sampling of the device during non-working time, when the solubility is too low, the electrolyte in the heat exchange unit is uniformly stirred by the dissolving liquid stirring pump to ensure the resistance value between the rotors when the motor is running.

[0038] When the present application is used, the speed regulation action analysis and research of the crusher load in the process of using the load impact resistance adjusting device, data deduction, heat generation and dissipation calculation in the running mode. Track the use effect of the load impact resistance adjusting device cooling circulation system, ensure that the system runs in a stable state, and form a closed-loop correction for design basis.

[0039] The present application is based on the theoretical starting time of the super-power crusher load motor and the heat generated by completing a complete starting process to calculate the capacity requirement of the equipment.

[0040] The present application is a new electrical structure design form; reduces the loss and maintenance cycle of electrolyte and cooling medium;

[0041] The present application adopts the transmission mechanism form and positioning brake technology of the industrial control frontier to realize accurate and rapid response control of starting function effect;

[0042] The present application realizes the centralized control of power supply, auxiliary transmission and cooling circulation complete equipment according to the comprehensive analysis of the application status of similar products at home and abroad, and simplifies the operation and reduces the cost compared with the existing product mode;

[0043] The present application utilizes the precise positioning and rapid response characteristics of servo drive to realize multiple closed-loop control of current, temperature, speed and heat exchange;

[0044] The present application adopts the circular plate structure of multi-layer conductive section, which can effectively increase the engagement area of the plate in the same volume, reduce the current density per unit size, prolong the service life of the plate, and the heat accumulation and dissipation efficiency in the current coupling process is higher;

[0045] The present application will use anticorrosive insulating paint to directly install the plate heat exchange unit for energy transmission in the electrolyte for heat exchange, so that the temperature difference of the two media is higher, the energy exchange rate is faster, and the circulation and stability performance of the complete equipment is more timely than the traditional way;

[0046] The present application will use the structure form of chain horizontal dragging plate, which can effectively compress the plate stroke, reduce the mechanical transmission space, correspondingly increase the height of heat exchange, reduce the required area of heat exchange, and further compress the volume of the complete equipment;

[0047] Under the premise of the whole set of equipment ready, through the operation of the man-machine interface on the main control box, set the data in line with the expected action value. After starting, the power cabinet closes to provide energy for the whole set of equipment, when working in bypass mode, the bypass switch is directly short-circuited, and the full-speed operation of the motor can be realized. When working in the mode of resisting load impact, the rotor of the motor works in the condition of not being fully short-circuited, in the case of large load impact of broken working condition, the data fed back to the processor by the current, speed and other sensor elements are quickly calculated to determine the direction of the running plate, and an immediate response is made through the servo motor drive to ensure that the load change can be effectively and timely responded, so that the motor works in a low-speed state, the current value of the motor stator side is reduced, and large current fluctuation is avoided, which causes the action trigger of the upper protection equipment, and then leads to the stop of the whole set of equipment, which needs to be started again. When running in a low-speed state, the rotor of the motor can provide greater mechanical torque, and the transition effect of the broken working condition of the material blocking and locked rotor is better;

[0048] The running of the whole set of equipment is in the intended direction, and the energy dissipation unit takes away the energy generated by the motor rotor in the process of not short-circuiting the plate; the transmission unit realizes the adjustment of the motor speed, and then realizes the adaptation of the transition impact load; the signal sampling unit collects real-time field data to provide closed-loop correction feedback for the operation of the equipment.

[0049] It should be noted that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and do not have technical significance to limit the implementation conditions of the present application, so any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the present application can produce, should still fall within the scope covered by the disclosed technical content of the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present specification are only for the convenience of clear understanding of the description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the implementation scope of the present application.

[0050] The above detailed description of the present application is made in combination with the embodiments of the drawings, and those skilled in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the present application, and the present application will be protected within the scope defined by the appended claims.

Claims

1. A high-torque adaptive output adjustment device with load resistance under crushing conditions exceeding 10000hp, characterized in that: It comprises a power cabinet (1), a main control box (2), a heat exchange unit (3), a cooling tower part (4), and a short-circuit switch (5). The main control box (2) comprises a signal processor (6), a man-machine interface (7), a servo driver (8), an analog signal sampling unit (9), and an auxiliary machine control loop (10). The heat exchange unit (3) comprises a motor and polar plate transmission member (11), a cooling circulation pipeline (12), a temperature sampling (13), a liquid level sampling (14), a solubility sampling (15), and a dissolved liquid stirring pump (16). The main control box (2) can control the power cabinet (1) to close and provide power, the heat exchange unit (3) can absorb the energy generated during the load impact process, the cooling tower part (4) can realize heat exchange and dissipation, and ensure the sustainability of the heat exchange unit (3), and the short-circuit switch (5) directly shorts the rotor side winding, thereby realizing full-speed operation of the motor. The signal processor (6) can sample the measured data fed back by various sensors on site, the servo driver (8) drives the motor and polar plate transmission member (11), which can travel a specified distance in the rotor circuit of the crushing host, change the value of the rotor resistance, and thereby change the stator circuit current to absorb the changing fluctuations from the load side. The servo driver (8) can track the load change rate in real time through the transmission support structure in the heat exchange unit (3), and achieve the goal of resisting load impact. The solubility sampling (15) unit can realize electrolyte solubility sampling of the equipment during non-working time. When the solubility is too low, the electrolyte in the heat exchange unit is uniformly stirred by the dissolved liquid stirring pump to ensure the resistance value between the rotors during motor operation.

2. The self-adaptive output regulating device for anti-load impact of crushing working condition over 10,000 hp, according to claim 1, characterized in that: The main control box (2) can control the operation of the entire set of equipment through the signals of the analog signal sampling unit (9).

3. The self-adaptive output regulating device of high moment of force against load impact under crushing working condition of more than 10,000 hp according to claim 2, characterized in that: The man-machine interface (7) can intuitively feedback the data state of each monitoring link of the entire unit operation.

4. The self-adaptive output regulating device of high moment of force against load impact under crushing working condition of over 10,000 hp according to claim 3, characterized in that: The analog signal sampling unit (9), temperature sampling (13), liquid level sampling (14), and solubility sampling (15) together constitute a closed-loop control loop for signal feedback, which converts various non-electric quantities into digital signals, quantifies specific operation state indicators, and accurately feedbacks the basic data required for calculation.

5. The self-adaptive output regulating device of high moment of force against load impact of crushing working condition over 10000 hp according to claim 4, characterized in that: The motor and polar plate transmission member (11) drag the smooth reciprocating motion of the rotor side series electrolytic polar plate.

6. The self-adaptive output regulating device of high moment of force against load impact under crushing working condition of more than 10,000 hp according to claim 5, characterized in that: The cooling circulation pipeline (12) serves as a carrier for heat dissipation in the heat exchange unit (3), and can realize the temperature difference energy transfer between the low-temperature circulating water in the cooling tower part (4) and the high-temperature electrolyte in the heat exchange unit (3).

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