阅读说明：本技术 一种用于控制铝电解阳极效应熄灭的装置及其方法 (Device and method for controlling aluminum electrolysis anode effect to be extinguished ) 是由 星占雄 刘锋 杨国文 杨旸 艾胜朋 杨红军 张启胜 康军年 王林 胡志梅 何刚 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种用于控制铝电解阳极效应熄灭的装置及其方法,装置包括有金属管和导入风管,金属管与导入风管连接,导入风管与风源连接；金属管的前段为一段弯曲管,通过该段弯曲管使整个金属管形成可向上翘的结构,并且该段弯曲管为用于伸入电解槽内的部分；至少在弯曲管的表面设有绝缘层；方法为用金属管的弯曲管插入一侧阳极下方,导入空压风,通过空压风吹动电解槽内的铝液和电解质液,使铝液和电解质液沸腾以促使阳极上的气泡逸出,实现阳极效应熄灭。本发明的优点为：装置简单,操作方便,成本低；大幅降低了阳极效应熄灭过程的电流效率损失；无需使用木棒,节省了生产成本,更为节能环保；熄灭阳极效应的时间短,节约了铝电解的电耗。(The invention discloses a device and a method for controlling the aluminum electrolysis anode effect to be extinguished, wherein the device comprises a metal pipe and an air inlet pipe, the metal pipe is connected with the air inlet pipe, and the air inlet pipe is connected with an air source; the front section of the metal pipe is a section of bent pipe, the whole metal pipe is made into a structure which can be tilted upwards through the section of bent pipe, and the section of bent pipe is a part which is used for extending into the electrolytic cell; at least the surface of the bending pipe is provided with an insulating layer; the method is characterized in that a bent pipe of a metal pipe is inserted below an anode on one side, air pressure air is introduced, and aluminum liquid and electrolyte liquid in an electrolytic cell are blown by the air pressure air to boil the aluminum liquid and the electrolyte liquid so as to promote bubbles on the anode to escape, thereby realizing the extinguishing of the anode effect. The invention has the advantages that: the device is simple, the operation is convenient, and the cost is low; the current efficiency loss in the anode effect extinguishing process is greatly reduced; wood bars are not needed, so that the production cost is saved, and the energy is saved and the environment is protected; the time for extinguishing the anode effect is short, and the power consumption of aluminum electrolysis is saved.)

1. A device for controlling the extinction of the anode effect of aluminum electrolysis is characterized in that: the device comprises a metal pipe and an air inlet pipe, wherein the metal pipe is connected with the air inlet pipe, and the air inlet pipe is connected with an air source; the front section of the metal pipe is a section of bent pipe, the whole metal pipe is made into a structure which can be tilted upwards through the section of bent pipe, and the section of bent pipe is a part which is used for extending into the electrolytic cell; an insulating layer is arranged on at least the surface of the bent pipe; the inner hole of the whole bending tube is in a conical hole structure, and the caliber of the air outlet is smaller than the caliber of the rest part of the inner hole of the bending tube.

2. The apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 1, wherein: the rear section of the metal pipe is a section of straight pipe, the section of straight pipe is sleeved with an insulating rubber pipe, and the insulating layer arranged on the surface of the front section of the metal pipe is an insulating coating.

3. The apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 2, wherein: the inner diameter of the straight pipe of the metal pipe is 12-20mm, and the caliber of the air outlet of the bent pipe is 5-12 mm.

4. An apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 3, wherein: the straight pipe and the bent pipe of the metal pipe are of an integral structure, and the front end of the straight pipe and the tail end of the bent pipe are in smooth transition.

5. An apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 3, wherein: the bent pipe of the metal pipe is of an arc-shaped bent structure, the bending degree of the front end of the bent pipe is the largest, and an included angle of 20-45 degrees is formed between the central shaft of the front end of the bent pipe and the central shaft of the straight pipe.

6. The apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 4, wherein: an air quantity control valve is arranged between the metal pipe and the air inlet pipe, and the metal pipe and the air inlet pipe are fixedly connected through the air quantity control valve.

7. The apparatus for controlling the extinction of the anodic effect of aluminum electrolysis according to claim 1, wherein: the metal pipe is a steel pipe; the leading-in air pipe is a flexible rubber pipe.

8. A method for controlling the extinction of the anode effect of aluminum electrolysis is characterized in that: the method applies the device for controlling the extinction of the anode effect of the aluminum electrolysis according to any one of claims 1 to 7, and is realized by the following processes,

s1, introducing dry air pressure air through an air inlet pipe;

s2, when the front section bent pipe of the metal pipe is inserted into the electrolytic cell generating the anode effect, opening the air source equipment to blow in air pressure air;

s3, inserting a metal tube into the lower part of the anode bottom palm on one side of the metal tube from an aluminum outlet of the electrolytic cell, and enabling an air outlet to face the anode bottom palm;

s4, rotating the metal tube in a semi-arc mode, blowing the aluminum liquid and the electrolyte liquid in the electrolytic cell by air pressure wind, boiling the aluminum liquid and the electrolyte liquid to promote bubbles on the anode to escape, and realizing anode effect extinguishing.

9. The method for controlling the extinction of an aluminum electrolytic anode effect according to claim 8, wherein: in step S4, while blowing the molten aluminum and the electrolyte solution in the cell by the air pressure wind, the cell is replenished with alumina by the cell controller or manually, so as to increase the alumina concentration in the electrolyte solution in the electrolytic cell.

10. The method for controlling the extinction of an aluminum electrolytic anode effect according to claim 8, wherein: in step S2, the opening degree of the air volume control valve is adjusted to control the air volume introduced into the metal tube, and the air volume control valve controls the air pressure to gradually increase the air volume to be blown into the liquid just after the metal tube is inserted into the electrolytic bath.

Technical Field

The invention relates to the technical field of aluminum electrolysis, in particular to a device and a method for controlling the extinction of an anode effect of aluminum electrolysis.

Background

The anode effect extinguishing method in the traditional aluminum electrolytic cell production is to use a wood bar to be inserted below an anode 10 of an aluminum outlet 8 of the aluminum electrolytic cell to extinguish the anode effect, as shown in figure 2: when the anode effect of the aluminum electrolytic cell occurs, the wooden rod 9 is manually used, the wooden rod 9 is obliquely inserted into an aluminum outlet 8 at the aluminum outlet end of the electrolytic cell, meanwhile, the automatic control program of the electrolytic cell control machine judges that the anode effect lasts for 20s, the anode effect treatment is automatically started (2 times of large blanking and 2 times of crust breaking), alumina is supplemented into the electrolytic cell, and the concentration of the alumina in the electrolyte is improved. Meanwhile, the wooden rod 9 inserted into the groove is burnt violently, so that local electrolyte liquid and aluminum liquid are promoted to be boiled and intensified, anode gas (bubbles) gathered at the bottom of the anode is forced to escape or break, the resistance of an anode gas film is greatly reduced, the conductivity of the electrolyte is converted into a good state, and the wooden rod 9 is carbonized after being burnt, so that an instant short circuit between the anode 10 and the cathode 11 (aluminum liquid) is formed, the effect voltage is reduced, and the normal working voltage is recovered (the voltage is generally 200-300 mv lower than the normal working voltage when the effect is just extinguished), so that the anode effect is extinguished.

At present, the anode effect of the aluminum electrolytic cell mainly occurs through the following mechanisms: (1) the theory of wettability is that the wettability of carbon anode is improved by electrolyte liquid when the anode effect occursAnd (6) changing. The aluminum oxide is a surface active substance, which can reduce the surface tension of cryolite melt on the carbon material, when the concentration of the aluminum oxide is high, the wetting property of the melt on the carbon material is good, the anode gas can not stay on the anode and can only be separated in the form of small bubbles, so the anode effect is not generated; on the contrary, the anode gas can be gathered on the anode and form large bubbles, and the wettability of the electrolyte to the carbon material is poor, so that the large bubbles are not easy to separate from the anode and are finally connected into a piece to cause the anode effect to occur. (2) The theory of fluoride ion discharge states that the anode effect occurs due to the change of the anode process and the fluoride ion discharge. When the alumina concentration in the electrolyte is reduced to a certain extent, the discharge of oxygen ions is converted into a combined discharge of oxygen ions and fluorine ions, forming an inert, non-wetting Carbon Fluoride (CF)_nAnd the wettability of the electrolyte to the carbon anode is weakened, so that the anode effect is caused. (3) The electrostatic attraction theory says that the change of the charge carried by the anode gas is the reason for the occurrence of the anode effect. In the electrolyte with higher alumina concentration, the bubbles are positively charged, so that the bubbles are repelled by the anode and are separated from the anode in the form of small bubbles; conversely, the bubbles are negatively charged and attracted by the anode, and a bubble layer appears on the anode, resulting in the occurrence of an anode effect. (4) The theory of repulsion of the anode to the electrolyte liquid shows that the molten salt electrolysis process with the anode effect has a common characteristic that gas is separated out on the anode, the electrolyte is partially expelled due to the separation of the anode gas, but normal electrolysis can still be carried out, when the current density of the anode is increased, bubbles on the anode are increased, the anode can repel the electrolyte to a greater extent, when the critical current density is reached, most of the current path is blocked, the electrostatic attraction is generated to be adsorbed on the anode, and the anode effect is generated. However, in any case, the anode gas is collected at the bottom of the anode, and the anode effect is solved by using a wood stick combustion method to promote the anode gas (bubbles) to escape or break.

However, because the anode effect of the aluminum electrolysis cell occurs in the industrial production process, even if the control is better, the anode effect coefficient can reach 0.1-0.3 times/cell/day, and the daily effect number of one 260 cells is about 26-78; each effect is extinguished, 1-2 wood sticks are generally needed, the number of the used wood sticks is large, and the cost of the added production auxiliary materials is high. Secondly, because the wooden stick needs 2 ~ 3 years planting lumber cycle, simultaneously the wooden stick extinguishes the positive pole effect and uses in aluminium electrolytic production after, has permeated fluorine in the useless wooden stick that produces, has formed the "danger waste product" that has certain pollution to the natural environment, handles the cost up to standard through danger waste and is higher, and the effect wooden stick supplier of market is less and less, and the purchase degree of difficulty increases, and aluminium electrolytic production cost rises. Thirdly, when the wooden stick is used for extinguishing the anode effect, the length of the wooden stick is generally 2.5-3.0 meters, the length of the wooden stick inserted into the aluminum electrolytic cell is generally 2.0-2.5 meters, the longer part of the wooden stick burns violently in the electrolyte and the aluminum liquid in the aluminum electrolytic cell, the secondary reaction of aluminum is aggravated in the process of extinguishing the anode effect, the current efficiency of the aluminum electrolytic cell is reduced in a short time directly, the current is consumed without power, the energy consumption of the aluminum electrolytic cell is increased, meanwhile, violent combustion can be generated, therefore, the operator and equipment can be damaged, and great potential safety hazards exist. Finally, when the wooden stick is used for extinguishing the anode effect, the wooden stick can achieve the effect of extinguishing the anode effect only after being burnt for a period of time, the duration time is long (generally 1-3 minutes, even longer), the voltage of the aluminum electrolytic cell is high when the anode effect occurs (the anode effect voltage is generally 8-25 v, even higher), the voltage is 2-6 times of the normal working voltage, and the energy consumption of the aluminum electrolytic cell is increased rapidly during the effect period.

In addition, except that the burning wooden stick is adopted to extinguish the anode effect, the industry also adopts an air stirring mode and a mode of adding an extinguishing agent, the defect of adding the extinguishing agent is similar to that of the burning wooden stick, and mainly the cost is high and the safety is low; air stirring is a more environment-friendly and low-cost mode, but the mode of air stirring is generally realized by arranging a gas injection device at present, the gas injection device is generally directly arranged on electrolytic cell equipment (such as a crust breaking machine head), and the gas injection device is required to be sunk into aluminum liquid along with a bearing mechanism (such as the crust breaking machine head) when in use, and then gas is introduced. The traditional application mode mainly has two defects, namely, the structure is complex, the installation is troublesome, and the cost of the equipment is greatly increased; secondly, the effect is not good enough, because the injection device can only sink into the aluminum liquid at the position close to the anode, and thus only under the side of the anode, the injection device can not enter the position right below the anode, and simultaneously, the injection device can not move flexibly to change the blowing direction and area, so that only one point or a small area can be blown, and the effect of extinguishing the anode effect is severely limited.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a device and a method for controlling the anode effect of aluminum electrolysis to be extinguished, wherein the device has the advantages of simpler structure, convenient operation and lower cost, and can quickly extinguish the anode effect and reduce the energy consumption of aluminum electrolysis.

In order to solve the technical problems, the invention adopts the following technical scheme: a device for controlling the extinction of the anode effect of aluminum electrolysis is characterized in that: the device comprises a metal pipe and an air inlet pipe, wherein the metal pipe is connected with the air inlet pipe, and the air inlet pipe is connected with an air source; the front section of the metal pipe is a section of bent pipe, the whole metal pipe is made into a structure which can be tilted upwards through the section of bent pipe, and the section of bent pipe is a part which is used for extending into the electrolytic cell; an insulating layer is provided at least on the outer surface of the bent tube.

Furthermore, the rear section of the metal pipe is a section of straight pipe, and the section of straight pipe is sleeved with an insulating rubber pipe, so that the insulating rubber pipe is convenient for operators to hold and the control of the operation process is more flexible and convenient; the insulating layer that sets up on the crooked pipe surface in tubular metal resonator anterior segment is insulating coating, through insulating layer with the tubular metal resonator insulation, prevents to cause positive pole and aluminium liquid to take place the short circuit and fuse the steel pipe, plays the protective effect that prevents high temperature melting to the steel pipe simultaneously.

Preferably, the inner diameter of the straight pipe of the metal pipe is 12-20mm, and the caliber of the air outlet of the bent pipe is 5-12 mm; the inner hole of the whole bent pipe is of a conical hole structure, the caliber of the air outlet is smaller than the caliber of the rest part of the inner hole of the bent pipe, for example, the caliber of the air outlet is 10mm, and the calibers of the straight pipe and the inlet at the tail end of the bent pipe are 15 mm. The structure can lead the metal tube to form a conical sharp nozzle, and the nozzle can spray gas with higher speed and pressure according to the aerodynamic principle, thereby improving the effect of blowing the liquid.

Preferably, the straight tube and the curved tube of the metal tube are of an integral structure, and the front end of the straight tube and the tail end of the curved tube are in smooth transition and can be obtained by bending one tube.

Preferably, the curved tube of the metal tube has an arc-shaped curved structure, the curvature of the front end of the curved tube is the largest, and the central axis of the front end of the curved tube forms an included angle of 20-45 degrees with the central axis of the straight tube, for example, the included angle is 30 degrees. Through the bending of the angle, firstly, the operation can be more flexible, and secondly, the bent pipe can form the tilting effect so as to be better aligned below the anode, and simultaneously, a larger area can be controlled in the arc-shaped rotating process so as to blow more liquid.

Furthermore, an air volume control valve is arranged between the metal pipe and the air inlet pipe, and the metal pipe and the air inlet pipe are fixedly connected through the air volume control valve. When in operation, the air volume control valve controls the air volume of the introduced air pressure air, so that the operation is more convenient.

Preferably, the metal pipe is a steel pipe; the guide-in air pipe is a flexible rubber pipe, and the rubber pipe can be flexibly twisted, so that the metal pipe can conveniently rotate. Meanwhile, the steel pipe and the rubber pipe belong to products which are low in cost, wide in application and easy to obtain, and the cost of the device can be further reduced.

A method for controlling the aluminum electrolysis anode effect extinguishing is based on the device for controlling the aluminum electrolysis anode effect extinguishing and is realized by the following processes,

s1, introducing dry air pressure air through an air inlet pipe;

s2, when the front section bent pipe of the metal pipe is inserted into the electrolytic cell generating the anode effect, opening the air source equipment to blow in air pressure air, and preventing liquid from entering the pipe; the opening degree of the air volume control valve is adjusted to control the air volume introduced into the metal pipe, and when the metal pipe is just inserted into the electrolytic cell, air volume control valve controls air pressure to blow into the liquid in a gradually increasing mode, so that the liquid is prevented from being blown to splash outwards when the air pressure is suddenly blown out;

s3, inserting the metal tube into the lower part of the anode on one side of the metal tube from the aluminum outlet of the electrolytic cell to ensure that the air outlet of the bent tube is completely immersed in the aluminum liquid and the air outlet faces the bottom palm of the anode;

s4, rotating the metal tube in a semi-arc mode, blowing the aluminum liquid and the electrolyte liquid in the electrolytic cell by air pressure wind, boiling the aluminum liquid and the electrolyte liquid to promote bubbles on the anode to escape, and realizing anode effect extinguishing.

In step S4, while blowing the aluminum liquid and the electrolyte liquid in the cell by the air pressure wind, the cell is replenished with alumina by the cell controller or manually, so as to increase the alumina concentration of the electrolyte liquid in the electrolytic cell.

The invention realizes the extinguishing of the anode effect by adopting the metal pipe with a special structure and matching with the air pressure wind required by the aluminum electrolysis, and can achieve the following technical effects: compared with the existing air extinguishing mode, the whole device has a simple structure, does not need to be arranged on electrolytic cell equipment, can be used independently, is convenient to operate, and simultaneously adopts dry air pressure air which is required to be used by the electrolytic cell, so that the air source is convenient to access, fewer auxiliary materials of the input spare parts are needed, the installation is convenient, and the cost is low;

secondly, compared with the traditional wood bar extinguishing mode, the secondary reaction loss caused by the wood bar inserted to aluminum can be greatly reduced, the loss of the original aluminum liquid in the extinguishing effect process is greatly reduced, and the current efficiency loss in the anode effect extinguishing process is reduced;

thirdly, wood bars or extinguishing agents are not needed, so that the production cost is greatly saved (the air pressure wind cost is low, and the air volume for extinguishing an anode effect is close to the air volume for one-time crust breaking and blanking of the electrolytic cell); meanwhile, the pollution of the waste effect rod or the extinguishing agent residue to the environment can be greatly reduced, so that the method is more environment-friendly;

fourthly, the time for extinguishing the anode effect is short (after the wood bar is burnt for a period of time, the extinguishing agent needs to react for a period of time to achieve the effect of extinguishing the anode effect, the duration is long), the molten electrolyte liquid and the molten aluminum liquid can be rapidly boiled locally, the effect of extinguishing the anode effect is good, the duration of the anode effect is effectively shortened, and the effect power consumption of the aluminum electrolysis cell is saved.

Drawings

FIG. 1 is a schematic view of a bypass pipe used in the apparatus of the present invention;

fig. 2 is a schematic diagram of a conventional apparatus for extinguishing the anode effect.

In the figure, 1 is an air inlet pipe, 2 is an air volume control valve, 3 is a metal pipe, 31 is an air inlet, 32 is an air outlet, 4 is an insulating coating, 5 is a tank shell, 6 is an impervious material layer, 7 is a heat preservation covering material, 8 is an aluminum outlet, 9 is a wood bar, 10 is an anode, 11 is a cathode, 12 is side carbon, and 13 is an artificial extension leg.

Detailed Description

In this embodiment, referring to fig. 1, the apparatus for controlling the aluminum electrolysis anode effect to extinguish includes a metal tube 3 for introducing air pressure air into the molten electrolyte and aluminum liquid in the electrolysis bath, the metal tube 3 is connected with an air inlet pipe 1, and the air inlet pipe 1 is connected with an air source device (the aluminum electrolysis device itself is provided with, not shown) to provide air pressure air; the metal pipe 3 is connected with the air inlet pipe 1 through an air volume control valve 2 so as to control the volume of the introduced air pressure; the front section of the metal tube 3 is a part for extending into electrolyte liquid and aluminum liquid in the electrolytic cell, the part is a section of bent tube, the outer surface of the bent tube is provided with an insulating layer, the metal tube 3 is insulated by the insulating layer, the steel tube is prevented from being fused by short circuit of the anode and the aluminum liquid, and meanwhile, the protection effect of preventing high-temperature melting is achieved on the steel tube; the tail end of the bent pipe 3 is an air inlet 31, the caliber of the air inlet is larger than that of an air outlet 32 at the front end of the metal pipe 3, and the inner hole of the bent pipe is of a conical hole structure which is gradually reduced from the tail end to the front end.

The part of the rear section of the metal pipe 3 which does not extend into the electrolyte and the aluminum liquid is a section of straight pipe, the section of straight pipe is sleeved with an insulating rubber pipe, and the insulating layer on the outer surface of the bent pipe is an insulating coating 4.

The inner diameter of the straight pipe of the metal pipe is 15mm, the inner diameter of the air outlet at the front end of the bent pipe is 10mm, and the bent pipe and the straight pipe are in smooth transition; the inner hole of the metal pipe 3 is gradually reduced from the front end of the straight pipe to the air outlet of the bent pipe, so that the pressure of air outlet can be improved, and the blowing effect is further improved.

The bent pipe is of an arc-shaped bent structure, the bending degree of the front end of the bent pipe is the largest, and a central shaft at the front end of the bent pipe and a central shaft of the straight pipe form an included angle of 30 degrees, so that the air outlet 32 is easily in a tilted state to be aligned to the lower side of the anode bottom palm.

The metal pipe 3 is a steel pipe, the air inlet pipe 1 is a flexible and twistable rubber pipe, and the steel pipe and the rubber pipe are both products which are low in cost, wide in application and easy to obtain.

A method for controlling the extinguishing of the anode effect of aluminum electrolysis, which applies the device for controlling the extinguishing of the anode effect of aluminum electrolysis, is realized by the following processes,

firstly, dry air pressure is introduced through an air inlet pipe 1, and the opening degree of an air volume control valve 2 is controlled to control the air volume introduced into a metal pipe 3;

secondly, when the bent pipe of the metal pipe 3 is inserted into an electrolytic cell generating an anode effect, the air source control valve 2 is firstly opened to blow in with small air quantity, so that the liquid is prevented from flowing backwards into the pipe, and the liquid is prevented from being blown up and splashed outwards due to the use of large air quantity;

thirdly, slowly inserting the metal pipe 3 into the lower part of the anode at one side from an aluminum outlet of the electrolytic cell, ensuring that the air outlet 32 is inserted into the aluminum liquid in the cell and ensuring that the air outlet 32 faces the bottom palm of the anode;

and finally, rotating the metal pipe 3 in a semi-arc mode to blow the whole anode below by air pressure wind, blowing the aluminum liquid and the electrolyte liquid by the air pressure wind to ensure that the aluminum liquid and the electrolyte liquid are boiled violently, so that bubbles gathered on the anode due to low concentration of aluminum oxide are enabled to escape rapidly, the gas film resistance is reduced, the voltage of the electrolytic cell is reduced rapidly, and the anode effect is extinguished.

When the aluminum liquid and the electrolyte liquid in the cell are blown by air pressure wind, the cell control machine or the manual work is used for supplementing the alumina into the cell, so that the alumina concentration in the cell is rapidly improved.

The cost is saved: because the anode effect of the aluminum electrolytic cell occurs sometimes in the industrial production process, even under the condition of better control, the anode effect coefficient can reach 0.1-0.3 times per cell per day, and the number of the series daily effects of one 260 cells is about 26-78; each effect extinguishment generally needs 1-2 sticks, statistics is started by using the novel method from 6 months, 37 ten thousand effect sticks can be saved in the year, the purchase cost of each effect stick is 1.6 yuan/root, and the production cost can be saved in the year: 37 × 1.6 ═ 59.2 (ten thousand yuan).

And (3) reducing the loss of aluminum liquid: the anode effect of the wooden stick can be extinguished after a period of combustion, and the duration time is generally about 50 seconds. The duration of the new method is about 35 seconds generally, the secondary reaction time of the aluminum is reduced by about 15 seconds, the loss of about 0.5kg of aluminum liquid is reduced according to theoretical calculation, and according to the annual effect of 49140 (78 multiplied by 3 multiplied by 210 is 49140), the loss of the aluminum liquid can be reduced by 24.57 tons, and nearly 30 ten thousand yuan is saved.

The annual environmental protection treatment cost of the waste effect rods is 10 ten thousand yuan, and the new method can save the part of the environmental protection cost expenditure.

After the novel method is used, the duration of the effect is reduced by 15 seconds each effect, 49140 effects in the year can save 38902.5 degrees of the power consumption (49140 multiplied by 15 divided by 60 multiplied by 190 divided by 38902.5 degrees) of the effect, and the cost of the power consumption is saved by 11670.75 yuan (38902.5 multiplied by 0.3 yuan divided by 11670.75 yuan).

The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.