CN114337351A - Friction nanometer power generation voltage enhancement method based on air breakdown effect and application thereof - Google Patents
Friction nanometer power generation voltage enhancement method based on air breakdown effect and application thereof Download PDFInfo
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- CN114337351A CN114337351A CN202111390895.0A CN202111390895A CN114337351A CN 114337351 A CN114337351 A CN 114337351A CN 202111390895 A CN202111390895 A CN 202111390895A CN 114337351 A CN114337351 A CN 114337351A
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Abstract
The invention belongs to the technical field of ionizing radiation, and particularly relates to a pulsed electrical signal enhancement method based on an air breakdown effect and application thereof. A friction nanometer power generation voltage enhancement method based on an air breakdown effect comprises the following steps: (1) forming an electric field by using the friction nano generator as an excitation power supply; (2) two metal electrodes are placed in an electric field, the distance between the two metal electrodes is kept at 2mm, and intensified pulse voltage is formed between the two electrodes. The invention provides a friction nanometer power generation pulse electrical signal enhancement scheme based on an air breakdown effect, and the enhancement of pulse voltage by more than 3 times can be realized at most by controlling the spacing between a positive electrode and a negative electrode. The voltage enhancement realized by the method can be used for increasing the excitation of mercury atoms, generating stronger ultraviolet light, reducing the metabolic activity of microorganisms and realizing the protection of fouling corrosion.
Description
Technical Field
The invention belongs to the technical field of ionizing radiation, and particularly relates to a friction nanometer power generation voltage enhancement method based on an air breakdown effect and application thereof.
Background
The gas in the normal state and isolated from the action of various external ionization factors is completely non-conductive. When a small amount of point particles (ultraviolet rays and cosmic rays) exist in the gas and the applied voltage reaches a certain value, the current suddenly increases sharply, so that the gas loses the insulating property. The phenomenon of a gas changing from an insulating state to a good conducting state is called breakdown. Air is used as an insulating medium, and in a common application scene, the breakdown effect is used as a negative factor and needs to be avoided and avoided.
Under the marine atmospheric environment, pipelines of a coastal factory are seriously corroded, and a biological film can be formed in the pipelines within several hours, so that the pipelines are seriously corroded. The only effective measure for controlling biofouling corrosion is to administer the biocide for a long time, but the use of biocides is increasingly limited due to environmental protection and their inability to perform fully effective functions. In order to realize green development and sustainable development of the ecological society, development of environment-friendly, efficient and spectral sterilization technology is urgently needed. In order to develop the environment-friendly society, researchers continuously research and perfect the ultraviolet sterilization process, and the ultraviolet sterilization gradually becomes the last sterilization process of domestic water plants. However, the current ultraviolet sterilization process determines the short sterilization time, has no continuous sterilization capability and has the problem of the light reactivation of microorganisms. The ultraviolet sterilization device has high power consumption, high equipment maintenance cost and high manufacturing cost, and limits the wide application of the ultraviolet sterilization device. A general ultraviolet ray generator excites mercury atoms in a transparent tube at high voltage, but requires very high voltage and extremely high equipment requirements.
Disclosure of Invention
The invention aims to provide a method for enhancing a pulse electric signal by utilizing an air breakdown effect, and meanwhile, the method is applied to the protection of microbial fouling corrosion to realize an unexpected effect.
In order to achieve the purpose, the invention adopts the technical scheme that: a friction nanometer power generation voltage enhancement method based on an air breakdown effect comprises the following steps:
(1) forming an electric field by using the friction nano generator as an excitation power supply;
(2) two metal electrodes are placed in an electric field, the distance between the two metal electrodes is kept at 2mm, and intensified pulse voltage is formed between the two electrodes.
The invention provides the application of the method, and the method can be used for enhancing the pulse voltage, so that mercury atoms can be excited by the enhanced pulse voltage to generate ultraviolet light.
The invention provides other applications of the friction nanometer power generation voltage enhancement method, and the method can be applied to microbial fouling corrosion protection. By utilizing the enhancement effect of the method on the pulse voltage, the excitation of mercury atoms is increased by means of the enhanced pulse voltage, stronger ultraviolet light is generated, the metabolic activity of microorganisms is reduced, and the protection on the fouling corrosion of the microorganisms is realized.
Further, the invention also provides a method for preventing microbial fouling corrosion based on the air breakdown effect, which comprises the following steps: by adopting the method, the intensified pulse voltage is generated;
the reinforced pulse voltage is used for exciting mercury atoms in the ultraviolet lamp tube to generate ultraviolet light to irradiate microorganisms.
The invention develops a friction nanometer power generation pulse electrical signal enhancement scheme based on the air breakdown effect, and can realize the enhancement of more than 3 times of pulse voltage at most by controlling the spacing between the positive electrode and the negative electrode. The voltage enhancement realized by the method can be used for increasing the excitation of mercury atoms, generating stronger ultraviolet light, reducing the metabolic activity of microorganisms and realizing the protection of fouling corrosion.
Drawings
FIG. 1 is a graph showing the output voltage of a friction nano-generator as a driving power source in an embodiment of the present invention under the air breakdown effect and without the air breakdown effect (in a conventional case);
FIG. 2 is a graph of impedance matching test of the triboelectric nanogenerator under breakdown discharge in an embodiment of the invention;
FIG. 3 is a study of the sterilization performance of the ultraviolet sterilization pipe antifouling device with and without air-striking, penetrating and electric-stimulation;
FIG. 4 is a surface topography of glass slides after static placement with Q235 carbon steel in untreated and treated mixed bacterial solutions.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
(1) the polyethylene terephthalate and the fluorinated ethylene propylene film are selected as friction materials, and the separation of surface charges is realized through the contact separation of the polyethylene terephthalate and the fluorinated ethylene propylene film, so that an electric field is formed.
(2) Two metal electrodes are placed in an electric field, and under the action of the electric field, pulse voltage is formed between the electrodes.
(3) The distance between the two electrodes is controlled to be kept about 2mm, so that the breakdown of air between the electrodes is realized, and the strengthening of an electric field is formed.
As shown in fig. 1, compared with the no-air breakdown effect, in this embodiment, the electric field formed by the air breakdown effect is strengthened, so that the pulse voltage output is increased by more than 3 times, which is as high as 6.9 kV.
The variation trend of the open-circuit voltage of the friction nano-generator under the condition of breakdown discharge is shown in fig. 2, and the open-circuit voltage is increased to about 8.3 kV at the maximum under the condition of air breakdown.
(1) the polyethylene terephthalate and the fluorinated ethylene propylene film are selected as friction materials, and the separation of surface charges is realized through the contact separation of the polyethylene terephthalate and the fluorinated ethylene propylene film, so that an electric field is formed.
(2) Fixing the two metal electrodes and the conductive points of the ultraviolet lamp in the acrylic tube, placing the acrylic tube in the electric field formed in the step (1), gradually reducing the distance between the two electrodes to about 2mm, and exciting mercury atoms in the glass tube by a strong electric field formed by a breakdown phenomenon to generate ultraviolet light.
The ultraviolet light generated by the method of the embodiment is used for bacteriostasis experiments, and as can be seen from fig. 2, the bacteriostasis effect of the ultraviolet light generated by the method of the embodiment is greatly different from that of the ultraviolet light generated by a conventional ultraviolet lamp. After 10 min of sterilization, the present example yieldedThe bacteriostasis rate of the ultraviolet light is 75 percent, and the bacteriostasis rate of the ultraviolet light generated by the conventional ultraviolet lamp is only 44 percent. The number density of the active bacteria of the iron reducing bacteria after the ultraviolet light treatment generated in the example after the sterilization for 60 min is 8 multiplied by 103CFU/ml, significantly lower than the density of UV-treated viable bacteria produced by a conventional UV lamp (2.5X 10)5CFU/ml). In the embodiment, the ultraviolet light generated by the air breakdown phenomenon is utilized to obviously improve the sterilization efficiency.
Embodiment 3 this example provides a method for preventing microbial fouling corrosion based on air breakdown effect, comprising the following steps:
(1) the polyethylene terephthalate and the fluorinated ethylene propylene film are selected as friction materials, and the separation of surface charges is realized through the contact separation of the polyethylene terephthalate and the fluorinated ethylene propylene film, so that an electric field is formed.
(2) Fixing the two metal electrodes and the conductive points of the ultraviolet lamp in the acrylic tube, placing the acrylic tube in the electric field formed in the step (1), gradually reducing the distance between the two electrodes to about 2mm, and exciting mercury atoms in the glass tube by a strong electric field formed by a breakdown phenomenon to generate ultraviolet light.
(3) And irradiating the microorganisms by using the ultraviolet light generated in the step.
The method for carrying out the microbial corrosion fouling protection experiment comprises the following specific steps:
(1) and diluting the bacterial liquid by the culture medium solution. The bacterial liquid is diluted by using the prepared mixed bacteria culture medium in a ratio of 100: 1.
(2) The bacteria liquid without treatment is not contacted with ultraviolet irradiation all the time, and the treated bacteria liquid is irradiated by ultraviolet for 1 h after every 7 h.
(3) 6 glass sheets (12 in total) of 8 mm × 25 mm and 4 metal sheets (8 in total) of 20 mm × 20 mm were placed in each of the untreated diluted bacterial solution and the treated diluted bacterial solution.
(4) The medium was changed every 2 days. According to the sterile culture solution: the culture medium is replaced with the bacterial liquid at the ratio of 10: 1.
(5) Glass sheet: and (4) observing the transmittance of the glass sheets soaked in the untreated bacterial liquid of 0 d, 2 d, 4 d and 8 d and the treated bacterial liquid and observing the surface microorganism adhesion condition by using a fluorescence microscope.
(6) And macroscopically observing the microorganism attachment state of the metal surface. And 8D, using laser confocal shooting to shoot the 3D morphology of the microbial film on the metal surface.
As can be seen from FIG. 4, the thickness of the biofilm formed on the surfaces of the glass sheet and the Q235 carbon steel after being soaked in the bacterial liquid treated by the method of the present embodiment for a certain period of time is significantly smaller than the thickness of the surfaces of the glass sheet and the metal sheet soaked in the untreated bacterial liquid. After the sewage in the pipeline is irradiated by the ultraviolet rays, microorganisms with corrosivity, pathogenicity and the like are killed, the formation of a microbial film is inhibited, and the phenomenon of fouling and corrosion of equipment is inhibited.
Claims (5)
1. A friction nanometer power generation voltage enhancement method based on air breakdown effect is characterized by comprising the following steps:
(1) forming an electric field by using the friction nano generator as an excitation power supply;
(2) two metal electrodes are placed in an electric field, the distance between the two electrodes is kept at 2mm, and intensified pulse voltage is formed between the two electrodes.
2. Use of the method according to claim 1 for the generation of ultraviolet light.
3. A method of generating ultraviolet light based on air breakdown effect, comprising:
(1) forming an electric field by using the friction nano generator as an excitation power supply;
(2) fixing two metal electrodes and conductive points of an ultraviolet lamp in an acrylic tube, and placing the acrylic tube in an electric field; the spacing between the two electrodes was maintained at 2 mm.
4. Use of the method according to claim 1 for the protection against microbial fouling corrosion.
5. A method for preventing microbial fouling corrosion based on air breakdown effect, characterized in that, the method according to claim 1 is adopted to generate intensified pulse voltage;
the reinforced pulse voltage is used for exciting mercury atoms in the ultraviolet lamp tube to generate ultraviolet light to irradiate microorganisms.
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- 2021-11-23 CN CN202111390895.0A patent/CN114337351B/en active Active
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