CN114825595B - Power grid shaking prevention device of diamond top press and control method - Google Patents
Power grid shaking prevention device of diamond top press and control method Download PDFInfo
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- CN114825595B CN114825595B CN202210642216.2A CN202210642216A CN114825595B CN 114825595 B CN114825595 B CN 114825595B CN 202210642216 A CN202210642216 A CN 202210642216A CN 114825595 B CN114825595 B CN 114825595B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Abstract
A diamond top press machine anti-power grid shaking device and a control method thereof are provided, the device is additionally provided with an emergency lithium battery power supply in the aspect of power supply of an original diamond top press machine, and an electric shaking monitoring module is additionally arranged, the device monitors shaking signals of a power grid in real time by arranging a power grid shaking signal sensor, and determines whether to switch the power grid power supply of a top press machine control system into the emergency lithium battery power supply according to the change condition of the signals.
Description
Technical Field
The invention relates to the technical field of peripheral power supply equipment of a diamond top press, in particular to a power grid jitter prevention device of the diamond top press and a control method.
Background
The superhard materials industry is concerned with a wide variety of synthetic products such as synthetic diamonds, CBN, compacts and the like.
With the development of industry and the improvement of the living standard of residents, the superhard material synthesized by the diamond top press is widely applied in many fields. In recent years, due to the reduction of the population proportion of the labor force and the continuous increase of the wages of workers, the production cost is indirectly increased, and the economic benefit of enterprises is influenced to a certain extent. Therefore, advanced production equipment is required to improve the production efficiency and reduce the number of employees to reduce the production cost. In order to solve the problems of equipment stability of a synthesis station, reduction of production and maintenance costs, material use costs and the like, a control system of an original diamond synthesis top press needs to be optimally designed, the working stability and reliability are improved, and the synthesis intelligence is realized. Compared with the prior diamond top press, the existing diamond top press has the advantages that sensors for detecting various working conditions of the top press are added for realizing automatic control of the top press, the addition of electric elements such as a controller, a contactor, a frequency converter and a servo driver is omitted for realizing the execution of the automatic control action of the top press, the automatic work of the top press is realized, the automatic control of the diamond synthesis process is realized through the electric elements, and the work efficiency and the quality are far superior to the original manual operation.
The automatic diamond top press utilizes the convenience of electricity and also faces the problems of electricity, the electric power in the work of the top press is from a power grid, so the problems of the power grid bring certain troubles to the top press, the shaking (fluctuation) or instantaneous sudden change of the power grid can cause the automatic top press to be incapable of normally operating, the effective execution of the whole synthesis process is influenced, the shutdown and blasting are caused (the diamond is in a high-temperature and high-pressure state during synthesis and the airtight protection is lost), the quality of the product is unstable, and the like.
Grid vibration causes problems for automated top presses in operation as follows:
1. instability of measurement of parameters
When the power grid shakes, the parameters detected by each execution component are deviated by a sensor in the control system, so that the parameters are inaccurate, an error signal is provided for the control system, the effective execution of a synthesis process cannot be guaranteed, the control accuracy is reduced, the synthesis effect is directly influenced, and the quality of a product is unstable.
2. Unstable control system action execution
When the electric wire netting takes place the shake, the relay in the control system, the contactor, the converter, servo driver, the solenoid valve, executive component such as motor can not guarantee normal work, because the intrinsic reason of part own, take place the shake in-process at the electric wire netting, self can take place the protection, lose the possibility of continuing the executive action, thereby influence the effective execution of later stage synthesis technology, indirectly influence synthetic quality, can cause unusual phenomena such as low pressure high temperature to take place when serious, if can not in time handle, the blasting will take place to serious point, cause the mould such as top hammer of synthetic roof press to take place to damage and blast, cause bigger economic loss, and the production cost and cost of maintenance are improved.
3. The reliability of the control system is reduced, and the service life is greatly reduced
When the power grid shakes, the provided voltage signal contains a large number of harmonic components, and some harmonic components and peak values of the harmonic components can cause fatal damage to electric appliances of the control system, so that the waste of maintenance materials is caused, the operation cost is increased, and the control of the product cost is not facilitated.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a device for preventing the electric network of a diamond top press from shaking and a control method thereof,
the technical scheme of the invention is as follows: the utility model provides a diamond roof press anti-power grid shake device, includes roof press machine control system, gives the electric wire netting and the emergent lithium cell power supply of roof press machine control system power supply which characterized in that: the device is also provided with a power grid jitter monitoring module and a power supply switcher;
the power grid jitter monitoring module comprises a power grid jitter signal sensor connected with a power grid, a signal processor connected with the power grid jitter signal sensor, and a power grid abnormity control module connected with the signal processor; the power grid abnormity control module is respectively connected with an emergency lithium battery power supply and a top press control system through leads;
the emergency lithium battery power supply is connected with the electric jitter monitoring module through a wire to supply power.
The switch is internally provided with a switch control signal receiving module and a switch execution module, and the top pressure control system is internally provided with a switch control signal receiving interface and an electrical protection cancellation module.
Preferably, the top press control system comprises a top press sensor for monitoring the working state of the top press, a programmable controller for controlling the top press to work, and an electrical element which is connected with the programmable controller and executes specific actions, wherein the electrical element comprises but is not limited to a motor driver, a relay, a contactor, an air switch, a frequency converter and a heating control module; the electric protection cancellation module is positioned in the programmable controller.
Preferably, the lithium battery pack in the emergency lithium battery power supply is a circulating water-cooling battery pack, a circulating water pipe for cooling is arranged on the battery pack, the circulating water pipe is connected with a radiator and a fan, and a circulating pump is arranged on the circulating water pipe.
Preferably, the lithium battery in the emergency lithium battery power supply is made of high-temperature-resistant materials.
Preferably, the emergency lithium battery power supply is connected with a power grid through a charging module.
A method for controlling the anti-grid-shaking of the diamond top press by adopting the device comprises the following steps:
a. grid jitter monitoring
The power grid shaking signal sensor monitors shaking signals of a power grid in real time, the shaking signals obtained by the power grid are sent to the signal processor, and the signal processor processes the shaking signals sent by the power grid shaking signal sensor into identifiable input signals;
b. analysis and determination of jitter signals
After the power grid abnormality control module receives the recognizable input signal in the step a, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether the lithium battery power supply needs to be switched, sends a switching signal to the switcher and the top pressure control system if the lithium battery power supply needs to be switched, and continues to execute the step a if the lithium battery power supply does not need to be switched;
c. switch to lithium battery power supply
When the switcher receives the switching signal, the power supply of the power grid of the jacking press control system is switched to the power supply of the emergency lithium battery power supply;
d. cancellation of electrical protection
When the top pressure control system or the programmable controller therein receives the switching signal, the electric protection cancelling module sends an instruction to each electric element to cancel the protection action of each electric element;
e. grid jitter free monitoring
The power grid shaking signal sensor monitors shaking signals of a power grid in real time, the shaking signals obtained by the power grid are sent to the signal processor, and the signal processor processes the shaking signals sent by the power grid shaking signal sensor into identifiable input signals;
f. analysis and determination of a non-jittered signal
After the power grid abnormity control module receives the recognizable input signal in the step e, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether a power grid power supply needs to be switched, sends a switching signal to the switcher and the top pressure control system if the power grid power supply needs to be switched, and continues to execute the step e if the power grid power supply does not need to be switched;
g. switching to mains supply
When the switcher receives the switching signal, the power supply of the emergency lithium battery power supply of the top press machine control system is switched to the power supply of the power grid;
h. cancellation of electrical protection
When the top pressure control system or the programmable controller therein receives the switching signal, the electric protection cancelling module sends an instruction to each electric element to cancel the protection action of each electric element;
and c, circularly executing the steps a to h.
Preferably, the jitter signal is a signal containing harmonic components and voltage fluctuation,
in the step b, the harmonic component and the voltage fluctuation signal are compared with respective preset threshold values at the same time, and if one of the harmonic component and the voltage fluctuation signal exceeds the threshold value, the power grid abnormity control module sends a switching signal;
and e, simultaneously comparing the harmonic component and the voltage fluctuation signal with respective preset threshold values, and when the harmonic component and the voltage fluctuation signal do not exceed the threshold values, sending a switching signal by the power grid abnormity control module.
The invention has the beneficial effects that:
the invention provides a power grid jitter prevention device and a control method for a diamond top press, which are characterized in that an emergency lithium battery power supply is added in the aspect of power supply of the original top press, an electric jitter monitoring module is additionally arranged, a power grid jitter signal sensor is arranged in the device to monitor a jitter signal of a power grid in real time, and whether the power grid power supply of a top press control system is switched to the emergency lithium battery power supply is determined according to the change condition of the signal.
Drawings
Fig. 1 is a schematic diagram of the specific structure of the anti-grid-shaking device of the diamond top press;
fig. 2 is a schematic diagram of a water-cooled lithium battery.
Detailed Description
The following description specifically describes embodiments and applications of the present invention in conjunction with the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, the power grid shaking prevention device for the diamond top press comprises a top press control system, a power grid for supplying power to the top press control system and an emergency lithium battery power supply, and is characterized in that: the device is also provided with a power grid jitter monitoring module and a power supply switcher;
the power grid jitter monitoring module comprises a power grid jitter signal sensor connected with a power grid, a signal processor connected with the power grid jitter signal sensor, and a power grid abnormity control module connected with the signal processor; the power grid abnormity control module is respectively connected with an emergency lithium battery power supply and a top press control system through leads;
the emergency lithium battery power supply is connected with the electric jitter monitoring module through a wire to supply power.
The switch is internally provided with a switch control signal receiving module and a switch execution module, and the top pressure control system is internally provided with a switch control signal receiving interface and an electric protection cancellation module.
The device has increased emergent lithium cell power in the aspect of original roof press power supply to add electronic shake monitoring module, the device is through setting up the shake signal of electric wire netting shake signal sensor real-time supervision electric wire netting, and whether the grid power of roof press control system switches into emergent lithium cell power according to the situation of change of this signal, the device's operation can instantaneously switch roof press control system's power, cause the appearance of various problems to diamond roof press control system when avoiding the electric wire netting shake mentioned in the background art.
Tests show that the lead-acid batteries have a capacitance effect, a large number of lead-acid batteries are arranged near the diamond top press to serve as emergency power supplies, and once the power grid shakes, a large capacitance group formed by the lead-acid batteries has the processes of adsorption charging and discharging on the power grid, so that shaking of the power grid is further aggravated, protection or tripping of superior power grid supply equipment such as phase change and power transformation of a factory can be seriously caused, and the influence is larger.
After comparison, the inventor adopts the lithium battery in the scheme of the invention to overcome the problems of the lead-acid battery, utilizes the balance control characteristic of the lithium battery to prevent the possibility of generating large current during charging adsorption and discharging of the battery when a power grid shakes, and reduces the impact on phase change and power transformation.
The top press control system comprises a top press sensor for monitoring the working state of the top press, a programmable controller for controlling the top press to execute work, and an electrical element which is connected with the programmable controller and executes specific actions, wherein the electrical element comprises but is not limited to a motor driver, a relay, a contactor, an air switch, a frequency converter and a heating control module; the electric protection cancellation module is positioned in the programmable controller.
The lithium battery pack in the emergency lithium battery power supply is a circulating water-cooling battery pack, a circulating water pipe for cooling is arranged on the battery pack, the circulating water pipe is connected with a radiator and a fan, and a circulating pump is arranged on the circulating water pipe, as shown in figure 2, wherein the circulating water pipe is 1-battery pack, 2-circulating water pipe, 3-radiator and 4-fan. Because the diamond roof press can produce the highly compressed environment of high temperature at the during operation, temperature is higher in near diamond roof press and workshop, near the roof press that the lithium cell also can arrange as emergency power supply, and high temperature can cause unfavorable influence to the normal work of lithium cell, consequently sets up circulating pipe and water-cooling radiator on the battery package and can in time eliminate the high temperature problem of here, makes the lithium cell can normally supply power, guarantees the normal work of diamond roof press, guarantees production efficiency and quality. The lithium battery in the emergency lithium battery power supply is made of high-temperature-resistant materials and is also used for improving the stability of the battery during use.
The emergency lithium battery power supply is connected with a power grid through the charging module. When the lithium battery is not used as a power supply, the lithium battery is charged in time through a power grid so as to be used when the power grid shakes next time.
The second embodiment: a power grid shaking prevention control method of a diamond top press adopting the device in the first embodiment comprises the following steps:
a. grid jitter monitoring
The power grid shaking signal sensor monitors shaking signals of a power grid in real time, the shaking signals obtained by the power grid are sent to the signal processor, and the signal processor processes the shaking signals sent by the power grid shaking signal sensor into identifiable input signals;
b. analysis and determination of jitter signals
After the power grid abnormality control module receives the recognizable input signal in the step a, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether the lithium battery power supply needs to be switched, sends a switching signal to the switcher and the top pressure control system if the lithium battery power supply needs to be switched, and continues to execute the step a if the lithium battery power supply does not need to be switched;
c. switching to lithium battery power supply
When the switcher receives the switching signal, the power supply of the power grid of the top press machine control system is switched to the power supply of the emergency lithium battery power supply;
d. cancellation of electrical protection
When the top pressure control system or the programmable controller therein receives the switching signal, the electric protection cancellation module sends an instruction to each electric element to cancel the protection action of each electric element;
e. grid jitter free monitoring
The power grid shaking signal sensor monitors shaking signals of a power grid in real time, the shaking signals obtained by the power grid are sent to the signal processor, and the signal processor processes the shaking signals sent by the power grid shaking signal sensor into identifiable input signals;
f. analysis and determination of a non-jittered signal
After the power grid abnormality control module receives the recognizable input signal in the step e, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether the power grid power supply needs to be switched or not, sends a switching signal to the switcher and the top pressure control system if the power grid power supply needs to be switched, and continues to execute the step e if the power grid power supply does not need to be switched;
g. switching to grid power
When the switcher receives the switching signal, the power supply of the emergency lithium battery power supply of the top press machine control system is switched to the power supply of the power grid;
h. cancellation of electrical protection
When the top pressure control system or the programmable controller therein receives the switching signal, the electric protection cancelling module sends an instruction to each electric element to cancel the protection action of each electric element;
and circularly executing the steps a to h.
In the embodiment, the dither signal contains a harmonic component and a voltage fluctuation signal, the harmonic component and the voltage fluctuation signal are simultaneously compared with respective preset threshold values in the step b, and if one of the harmonic component and the voltage fluctuation signal exceeds the threshold value, the power grid abnormality control module sends a switching signal;
and e, simultaneously comparing the harmonic component and the voltage fluctuation signal with respective preset threshold values, and when the harmonic component and the voltage fluctuation signal do not exceed the threshold values, sending a switching signal by the power grid abnormity control module.
The method can be operated to monitor the power grid shaking signal in real time, and timely switch the control system power supply of the diamond top press to the emergency lithium battery power supply according to the abnormal signal, thereby avoiding various problems caused to the control system of the diamond top press during the shaking of the power grid in the background technology. Meanwhile, when the power grid is normal, the emergency lithium battery power supply can be switched to the power grid power supply from an enterprise.
Claims (6)
1. The utility model provides a diamond roof press anti-power grid shake device, includes roof press machine control system, gives the electric wire netting and the emergent lithium cell power supply of roof press machine control system power supply which characterized in that: the device is also provided with a power grid jitter monitoring module and a power supply switcher; the power grid jitter monitoring module comprises a power grid jitter signal sensor connected with a power grid, a signal processor connected with the power grid jitter signal sensor, and a power grid abnormity control module connected with the signal processor; the power grid abnormity control module is respectively connected with an emergency lithium battery power supply and a top press control system through leads; the emergency lithium battery power supply is connected with the electric jitter monitoring module through a lead to supply power; the switcher is internally provided with a switching control signal receiving module and a switching execution module, and the top press control system is internally provided with a switching control signal receiving interface and an electrical protection cancellation module.
2. The anti-grid-shaking device of the diamond top press machine according to claim 1, characterized in that: the top press control system comprises a top press sensor for monitoring the working state of the top press, a programmable controller for controlling the top press to execute work, and an electrical element which is connected with the programmable controller and executes specific actions, wherein the electrical element comprises but is not limited to a motor driver, a relay, a contactor, an air switch, a frequency converter and a heating control module; the electric protection cancellation module is positioned in the programmable controller.
3. The diamond top press machine grid shaking prevention device according to claim 1, characterized in that: the emergency lithium battery power supply is characterized in that a lithium battery pack in the emergency lithium battery power supply is a circulating water-cooling battery pack, a circulating water pipe used for cooling is arranged on the battery pack, the circulating water pipe is connected with a radiator and a fan, and a circulating pump is arranged on the circulating water pipe.
4. The diamond top press machine grid shaking prevention device according to claim 3, characterized in that: the lithium battery in the emergency lithium battery power supply is made of high-temperature-resistant materials.
5. The diamond top press machine grid shaking prevention device according to claim 1, characterized in that: the emergency lithium battery power supply is connected with a power grid through the charging module.
6. A method for controlling the anti-grid-shaking of a diamond top press by using the device of any one of claims 1-5, the method comprising the steps of:
a, monitoring a grid jitter signal sensor by using grid jitter, monitoring a jitter signal of a grid in real time, sending the jitter signal obtained by the grid to a signal processor, and processing the jitter signal sent by the grid jitter signal sensor into a recognizable input signal by the signal processor;
b. after the jitter signal analysis and power grid abnormity judgment control module receives the recognizable input signal in the step a, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether the lithium battery power supply needs to be switched, sends a switching signal to the switcher and the top press control system if the lithium battery power supply needs to be switched, and continues to execute the step a if the lithium battery power supply does not need to be switched;
c. when the switcher receives the switching signal, the power supply of the power grid of the jacking press control system is switched to the power supply of the emergency lithium battery power supply;
d, electrical protection cancellation, when the top press control system or the programmable controller therein receives the switching signal, the electrical protection cancellation module sends an instruction to each electrical element to cancel the protection action of each electrical element;
monitoring the shaking signal of the power grid in real time by a power grid shaking signal sensor without shaking, sending the shaking signal obtained by the power grid to a signal processor, and processing the shaking signal sent by the power grid shaking signal sensor into a recognizable input signal by the signal processor; analysis and judgment of non-jittering signal
After the power grid abnormality control module receives the recognizable input signal in the step e, the signal processor analyzes the input signal, compares the input signal with a set comparison threshold value, judges whether the power grid power supply needs to be switched or not, sends a switching signal to the switcher and the top press control system if the power grid power supply needs to be switched, and continues to execute the step e if the power grid power supply does not need to be switched;
g, switching to a power grid power supply, and switching the power supply of an emergency lithium battery power supply of the top press control system to the power grid power supply after the switcher receives a switching signal;
h. the electrical protection cancellation module sends an instruction to each electrical element to cancel the protection action of each electrical element when the top press control system or the programmable controller therein receives a switching signal;
circularly executing the steps a to h;
the jitter signal comprises a harmonic component and a voltage fluctuation signal, the harmonic component and the voltage fluctuation signal are compared with respective threshold values preset in advance in the step b, and if one of the harmonic component and the voltage fluctuation signal exceeds the threshold value, the power grid abnormity control module sends a switching signal; and e, simultaneously comparing the harmonic component and the voltage fluctuation signal with respective preset threshold values, and when the harmonic component and the voltage fluctuation signal do not exceed the threshold values, sending a switching signal by the power grid abnormity control module.
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