CN113683057A - High-voltage discharge tube of ozone generator - Google Patents
High-voltage discharge tube of ozone generator Download PDFInfo
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- CN113683057A CN113683057A CN202010433022.2A CN202010433022A CN113683057A CN 113683057 A CN113683057 A CN 113683057A CN 202010433022 A CN202010433022 A CN 202010433022A CN 113683057 A CN113683057 A CN 113683057A
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- tube
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/10—Dischargers used for production of ozone
- C01B2201/14—Concentric/tubular dischargers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/30—Dielectrics used in the electrical dischargers
- C01B2201/34—Composition of the dielectrics
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The invention relates to a high-voltage discharge tube in a tubular high-voltage discharge structure in an ozone generator discharge torch, aiming at solving the technical problem of providing a high-voltage discharge tube which can be used for a single-gap discharge structure, has stable performance and reasonable cost and is convenient to manufacture, and comprises a dielectric tube (1), a central conductor (2) arranged in the dielectric tube and an end structure (3), the gap between the central conductor (2) and the inner side surface of the dielectric tube (1) is filled with particles (4) with conducting capacity, the end structure (3) can seal the particles without leakage and can lead the wiring structure out of the dielectric tube, the tiny conductive particles form a conductor tightly attached to the inner side surface of the dielectric tube by utilizing the fluidity of the tiny conductive particles, an efficient single-gap discharge structure can be formed between the tiny conductive particles and a grounding electrode on the outer side of the dielectric tube during working, and the whole high-voltage discharge tube is simple in structure, reasonable in cost and stable in performance.
Description
Technical Field
The invention relates to a high-voltage discharge tube in a tubular high-voltage discharge structure of an ozone generator discharge tube.
Background
The ozone generator discharge torch is a device for generating ozone by utilizing corona discharge in a high-voltage discharge structure blocked by a dielectric layer, the high-voltage discharge structure blocked by the dielectric layer consists of two conductors, and a dielectric body and a gap between the two conductors, one conductor is grounded while discharging, the other conductor is connected to the high-voltage end of a power supply, and dry air or oxygen passes through the gap to generate ozone. The high-voltage discharge structure has a plurality of specific modes in practical application, a shell-and-tube structure is common, a stainless steel tube is used as a grounding conductor and can also be called a grounding electrode, a dielectric tube with a conductor arranged inside is inserted into the center of the stainless steel tube with a gap, the conductor is connected to the high-voltage end of a high-voltage power supply and is called a high-voltage electrode, a plurality of groups of structures form a part for generating ozone in the ozone generator discharge lamp through a welding assembly process, the dielectric tube with the conductor arranged inside and auxiliary parts are assembled into a whole, namely a high-voltage discharge tube, the usage amount of the high-voltage discharge tube is large, and the structure and the performance of the high-voltage discharge tube are closely related to the cost and the efficiency of the ozone generator discharge lamp and are important parts in the ozone generator discharge lamp.
In the patent publication No. CN108117050A, a high voltage electrode is formed by an epoxy coating with conductive ability coated on the inner wall of a dielectric tube, and the high voltage electrode in the patent publication No. CN203006947U is a stainless steel tube filled with a stainless steel wire mesh brush inside and sleeved with a stainless steel wire mesh sleeve outside. The epoxy coating with electric conductivity in the first patent is attached to the inner wall of the dielectric tube, there is no gap between them, the corona discharge between the epoxy coating as the high voltage electrode and the grounding electrode of the external stainless steel tube only occurs in the gap outside the dielectric tube, it is a well-cooled single-gap discharge structure, its problem is that the epoxy coating has aging tendency under the irradiation of the discharge corona ultraviolet ray, it may peel off after a long time, the brush coating process is complicated, and other types of structures for coating the conductive layer in the dielectric tube have similar problems; the structure of the second patent is that a large amount of corona is generated in the dielectric tube, which is essentially a double-gap discharge structure, ozone carrier gas must flow through the space to utilize the discharge power of the corona, and the structure of the inner and outer gaps of the dielectric tube needs to be adjusted to match the ratio of the gas flow and the power, which not only increases the complexity of the structure, but also causes the poor cooling of the inner gap of the dielectric tube to affect the efficiency of ozone generation.
Disclosure of Invention
The invention aims to provide a high-voltage discharge tube which has stable performance, reasonable cost and convenient manufacture and can be used for a single-gap discharge structure.
The high-voltage discharge tube of the present invention includes a dielectric tube as outer shell, one end of the dielectric tube is in a blocking state, one end of the dielectric tube is made into a closed form by burning, or the other end is in an open state by mechanical blocking of other parts, and the high-voltage discharge tube also includes a central conductor placed in the dielectric tube. The main body of the central conductor is a conductive rod with a transverse dimension smaller than the inner diameter of the dielectric tube and a length equivalent to that of the dielectric tube, and the conductive rod mainly plays a role of conducting electricity and can be a metal wire, a metal wire rod or a metal tube. One end of the dielectric tube is a high-voltage wiring structure, if necessary, the other end of the dielectric tube can be provided with a positioning structure with the dielectric tube, and the middle part of the dielectric tube can also be provided with a positioning structure with the dielectric tube. The wiring structure and the positioning structure can be structures processed on the conducting rod body, and can also be structures formed by assembling and positioning other parts on the conducting rod, and the combined body of the conducting rod, the wiring structure and the positioning structure is a central conductor. The gaps between the central conductor and the inner side of the dielectric tube are filled with conductive particles or the mixture of the conductive particles and the insulating particles, and the conductive particles or the mixture of the conductive particles and the insulating particles are the particles with the conductive capability in the invention. The conductive particles refer to metal particles, particles of a conductive metal compound, semiconductor particles, or a mixture thereof, which are smaller than the size of the gap. An end structure which can seal particles with electric conduction capacity without leakage and can lead out a wiring structure to the outside of the dielectric tube is arranged at the opening of the dielectric tube, and the obtained integral component is the high-voltage discharge tube.
When the high-voltage discharge tube works, high voltage is transmitted to the whole central conductor along the length direction, and then is transmitted to the conductive particles contacted with the inner side surface of the dielectric tube through the contact surface between the central conductor and the conductive particles and the contact surface between the conductive particles, the conductive particles contacted with the inner side surface of the dielectric tube generate corona discharge between the dielectric tube and an external grounding electrode, and a gap between the outer side of the dielectric tube and the grounding electrode is a discharge space for generating ozone. Because the conductive particles are small in size and fill the space within the dielectric tube, corona is likely to occur only in a small number of small gaps between the conductive particles adjacent the inside surface of the dielectric tube, and because these small gaps are extremely small in size compared to the discharge space in which ozone is generated, the power loss due to them is extremely small and does not affect the efficiency of ozone generation in this regard.
Because some conductive particles are expensive, reducing the space that the conductive particles need to fill for a dielectric tube of a certain size reduces the cost of the high-pressure discharge vessel. One structure is to increase the size of the cross section of the central conductor, reduce the interval under the condition of ensuring the smooth filling of the conductive particles, for the dielectric tube with a round section, preferably use a thin-wall metal round tube with a proper diameter as the conductive rod of the central conductor, at this time, the difference value of the radius of the inner cavity of the dielectric tube and the radius of the metal round tube is the average thickness of the interval, the filling amount of the conductive particles can be reduced by reducing the thickness, and the hollow metal tube can also reduce the weight of the whole high-voltage discharge tube; the other structure is that insulating particles which are larger than the conductive particles in size and are cheap are mixed in during filling, and the filling amount of the conductive particles is reduced because the insulating particles occupy certain space. The large-size insulating particles and the inner side of the dielectric tube have only a few point contacts, and the gaps between them are filled with small-size conductive particles, so that the conductive particles still occupy most of the area of the inner side of the dielectric tube, and the area of the whole high-voltage discharge tube for discharging is not affected.
The high-voltage discharge tube of the invention utilizes the fluidity of the tiny conductive particles to form a conductor which is tightly attached to the inner side surface of the dielectric tube, the conductor is not possible to be stripped from the inner side surface of the dielectric tube and is composed of the non-aging materials, the joint structure of the conductor and the inner side surface of the dielectric tube ensures that the dielectric tube does not have substantial discharge and power loss, the high-voltage discharge tube which can be used for a single-gap discharge structure with higher ozone generation efficiency is formed, and the high-voltage discharge tube with stable performance, reasonable cost and simple and reliable structure can be obtained through a simple assembly process in production.
Drawings
FIG. 1 is a structural view of a high voltage discharge tube in the case where a conductive rod of a core conductor of the present invention is a wire
FIG. 2 is a structural diagram of a high voltage discharge tube with a positioning structure at the middle part of the central conductor according to the present invention
FIG. 3 is a structural view of a high voltage discharge tube in which a positioning structure is provided at an end of a core conductor according to the present invention
FIG. 4 is a structural diagram of a high voltage discharge tube in the case where the conductive rod of the center conductor of the present invention is a thin-walled metal tube
FIG. 5 shows a high pressure discharge when the conductive particles filled in the present invention are a mixture of glass beads and conductive particles
Construction of electric tube
Detailed description of the preferred embodiments
Fig. 1 shows a structure of a high voltage discharge tube according to the present invention, in which a dielectric tube 1 is a ceramic round tube, one end of the dielectric tube is made into a closed structure, the other end of the dielectric tube is made into an opening with external threads, a conductive rod 5 is a stainless steel wire, and is welded with a wiring structure 7 into a whole to form a central conductor 2, a gap between the inner side surface of the dielectric tube 1 and the stainless steel wire is large, 80-mesh iron powder can be conveniently filled as particles 4 with conductivity in this example, a fluoroplastic part with internal threads presses a rubber ring 6 against the end surface of the dielectric tube 1 to form an end structure 3, the wiring structure 7 penetrates through the part and is locked by a nut, and external threads can be used for connecting a high voltage wire.
FIG. 2 shows a structure of a high voltage discharge tube of the present invention, in which a dielectric tube 1 is a glass circular tube, one end of the dielectric tube is sintered to form a closed structure, the other end of the dielectric tube is sintered to form an opening with external threads, a conductive rod 5 is a stainless steel rod, a wiring structure 7 with external threads is directly machined at the end of the conductive rod, the machined rod is a central conductor 2 of the present embodiment, two fluorine plastic side-grooved parts are tightly sleeved in the middle of the stainless steel rod to form a positioning structure 8, a relatively uniform gap is maintained between the central conductor 2 and the inner side surface of the dielectric tube 1 for filling, the gap between the dielectric tube 1 and the stainless steel rod is relatively small, 300-mesh ferroferric oxide powder is used as conductive particles 4 in the present embodiment, and the ferroferric oxide powder is filled in the gap between the dielectric tube 1 and the central conductor 2 a small number of times under a suitable vertical vibration filling process, the end structure 3 is the same as in figure 1.
FIG. 3 shows a high-voltage discharge tube structure of the present invention, in which a dielectric tube 1 is a glass circular tube, one end of the dielectric tube is fired into a closed structure, the other end is fired into a tapered opening, a conductive rod 5 is a stainless steel rod, a wiring structure 7 and a positioning structure 8 are directly machined at both ends of the stainless steel rod, the machined rod is a central conductor 2 of the present embodiment, the positioning structure 8 keeps a relatively uniform gap between the central conductor 2 and the inner side of the dielectric tube 1 for easy filling, 200-mesh antimony oxide-doped tin dioxide semiconductor powder is used as the conductive particles 4 in the present embodiment, the semiconductor powder is filled into the gap between the dielectric tube 1 and the central conductor 2 a small number of times under a properly vibrating filling process, two fluoroplastic parts with matching threads compress a rubber ring 6 and are fixed on the tapered structure of the dielectric tube 1 to form an end structure 3 in the present embodiment, the wiring structure 7 and the end structure 3 are sealed by interference fit, and the outer end of the wiring structure 7 has an internal thread structure for connecting a high-voltage wire.
FIG. 4 shows a structure of a high voltage discharge tube according to the present invention, in which a dielectric tube 1 is a glass circular tube, one end of the dielectric tube is fired to be a closed structure, the other end is fired to be a tapered opening, a conductive rod 5 is a stainless steel thin-walled tube, both ends of which are press-fitted with a stainless steel wiring structure 7 and a fluoroplastic positioning structure 8 to constitute a central conductor 2 of the present example, the positioning structure 8 keeps an average thickness of a gap between the central conductor 2 and an inner side surface of the dielectric tube 1 to be 0.7mm, 100-mesh brass powder is used as conductive particles 4 of the present example, the brass powder is filled into the gap between the dielectric tube 1 and the central conductor 2 a small number of times under a filling process with appropriate vertical vibration and lateral deformation, two fluoroplastic parts with mating threads press a rubber ring 6 and are fixed on the tapered structure of the dielectric tube 1 to form an end structure 3 of the present example, the wiring structure 7 and the end structure 3 are sealed by interference fit, and the protruding part of the wiring structure 7 has a thread structure for connection to a high voltage line.
FIG. 5 shows a structure of a high voltage discharge tube of the present invention, in which a dielectric tube 1 is a glass circular tube, one end of the dielectric tube is fired into a closed structure, the other end is fired into a tapered opening, a conductive rod 5 is a stainless steel thin-wall tube, both ends of the conductive rod are press-fitted with a stainless steel wiring structure 7 and a fluoroplastic positioning structure 8 to form a central conductor 2 of the present embodiment, the positioning structure 8 keeps a relatively uniform gap between the central conductor 2 and the inner side of the dielectric tube 1 for easy filling, a glass bead 9 with a particle size of 0.6-1.2mm and a low price is first placed in the gap between the central conductor 2 and the inner side of the dielectric tube 1, then a 300 mesh stainless steel powder 10 is stacked at the tapered opening of the dielectric tube 1 by a filling tool, the stainless steel powder 10 gradually moves downward to fill the gap around the glass bead 9 in a plurality of vertical vibrations, the mixture of the stainless steel powder 10 and the glass beads 9 becomes the particles 4 with the conductive capability in the present example, two fluoroplastic parts with matching threads are locked and fixed on the conical structure of the dielectric tube 1 to form the end structure 3 in the present example, a sealing structure is formed between the sealing line protruded by the fluoroplastic parts and the dielectric tube 1, the wiring structure 7 and the end structure 3 are directly sealed in an interference fit manner, and the protruded part of the wiring structure 7 is a thread structure which can be used for connecting a high-voltage line.
Claims (9)
1. A high-voltage discharge tube for an ozone generator, comprising a dielectric tube (1), a central electrical conductor (2) placed therein, an end structure (3), characterized in that: a gap is left between the central conductor (2) and the inner side surface of the dielectric tube (1), and the gap is filled with particles (4) with electric conductivity.
2. The high pressure discharge tube of claim 1 wherein: the conducting rod (5) in the central conductor (2) is a thin-wall metal tube.
3. A high-pressure discharge tube as claimed in claim 1 or 2, characterized in that: the filled particles (4) with the conductive capacity are metal particles.
4. The high pressure discharge tube of claim 3 wherein: the average thickness of the gap between the central conductor (2) and the inner side of the dielectric tube (1) is less than 1.2 mm.
5. The high pressure discharge tube of claim 3 wherein: the average thickness of the gap between the central conductor (2) and the inner side of the dielectric tube (1) is less than 0.8 mm.
6. A high-pressure discharge tube as claimed in claim 1 or 2, characterized in that: the filled particles (4) with electric conductivity are particles of metal oxide.
7. The high pressure discharge tube of claim 6 wherein: the average thickness of the gap between the central conductor (2) and the inner side of the dielectric tube (1) is less than 1.2 mm.
8. The high pressure discharge tube of claim 6 wherein: the average thickness of the gap between the central conductor (2) and the inner side of the dielectric tube (1) is less than 0.8 mm.
9. A high-pressure discharge tube as claimed in claim 1 or 2, characterized in that: the filled particles (4) with the electric conduction capability are a mixture of metal particles and glass beads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010433022.2A CN113683057A (en) | 2020-05-19 | 2020-05-19 | High-voltage discharge tube of ozone generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010433022.2A CN113683057A (en) | 2020-05-19 | 2020-05-19 | High-voltage discharge tube of ozone generator |
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| Publication Number | Publication Date |
|---|---|
| CN113683057A true CN113683057A (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010433022.2A Pending CN113683057A (en) | 2020-05-19 | 2020-05-19 | High-voltage discharge tube of ozone generator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406988Y (en) * | 1999-10-29 | 2000-11-22 | 王惊 | High concentration ozone generator |
| US20030226751A1 (en) * | 2002-06-11 | 2003-12-11 | Kasten Stephen P. | Corona discharge ozone generator |
| CN1769161A (en) * | 2005-09-20 | 2006-05-10 | 江苏大学 | A discharge tube element for generating ozone |
| CN1907842A (en) * | 2006-08-10 | 2007-02-07 | 中国科学技术大学 | Method and apparatus for generating ozone |
| CN110467157A (en) * | 2019-09-29 | 2019-11-19 | 无锡太然环保科技有限公司 | High concentration low energy consumption ozone generator |
| CN212356541U (en) * | 2020-05-19 | 2021-01-15 | 北京奇清水处理技术有限公司 | High-voltage discharge tube of ozone generator |
-
2020
- 2020-05-19 CN CN202010433022.2A patent/CN113683057A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406988Y (en) * | 1999-10-29 | 2000-11-22 | 王惊 | High concentration ozone generator |
| US20030226751A1 (en) * | 2002-06-11 | 2003-12-11 | Kasten Stephen P. | Corona discharge ozone generator |
| CN1769161A (en) * | 2005-09-20 | 2006-05-10 | 江苏大学 | A discharge tube element for generating ozone |
| CN1907842A (en) * | 2006-08-10 | 2007-02-07 | 中国科学技术大学 | Method and apparatus for generating ozone |
| CN110467157A (en) * | 2019-09-29 | 2019-11-19 | 无锡太然环保科技有限公司 | High concentration low energy consumption ozone generator |
| CN212356541U (en) * | 2020-05-19 | 2021-01-15 | 北京奇清水处理技术有限公司 | High-voltage discharge tube of ozone generator |
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Application publication date: 20211123 |