CN201616416U - Ceramic high-voltage discharge tube - Google Patents
Ceramic high-voltage discharge tube Download PDFInfo
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- CN201616416U CN201616416U CN2010201251409U CN201020125140U CN201616416U CN 201616416 U CN201616416 U CN 201616416U CN 2010201251409 U CN2010201251409 U CN 2010201251409U CN 201020125140 U CN201020125140 U CN 201020125140U CN 201616416 U CN201616416 U CN 201616416U
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- voltage discharge
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Abstract
The utility model discloses a ceramic high-voltage discharge tube, and is characterized in that: the ceramic high-voltage discharge tube comprises a corrugated ceramic tube (1), a cover cap (2), an electrode (3) and a conductive rod (4). The cover cap (2) is welded with the end surface of the corrugated ceramic tube (1); the conductive rod (4) is fixed on the internal side surface of the cover cap (2); the electrode (3) presents a disc shape and is connected with the conductive rod (4); a nut (5) is installed at the outer side of the cover cap (2); an exhaust nozzle (6) for pumping vacuum is arranged on the cover cap (2) installed on any end of the corrugated ceramic tube (1); the internal cavity of the corrugated ceramic tube (1) is at least provided with one concave ring-shaped step body (7) for extending service life and enhancing strength. The ceramic high-voltage discharge tube has advantages of small volume, long service life and wide application range.
Description
Technical field
The utility model relates to a kind of electric security protector element, especially a kind of be used for fields such as electric power, communication, switchgear be used to prevent that overvoltage from causing the high voltage protective element of equipment or line fault, specifically a kind of ceramic high-voltage discharge tube.
Background technology
As everyone knows, discharge tube is a kind of high voltage protective element that is used in the equipment input.If when the voltage at its two ends exceeded its protection specification value, short circuit phenomenon can appear in its inside, and sponge the high pressure of crossing of input.
Existing discharge tube mainly contains opening gas discharge tube, and the electrical characteristic of its discharge path depends primarily on environmental parameter, thereby the stability of work can not get guaranteeing.In order to improve the job stability of gas discharge tube, present gas discharge tube mostly adopts metallized ceramic insulator and electrode to carry out solder technology, thereby guaranteed the air-tightness of the shell and the discharging gap of sealing-in, this has just created condition for gaseous species and pressure in the optimized choice discharge tube.
The various electrical characteristics of gas discharge tube as dc breakdown voltage, impact flashover voltage, shock-resistant electric current, anti-power current ability and useful life etc., can be adjusted optimization according to the requirement of using system.This adjustment realizes by gaseous species, pressure, electrode coating material composition and interelectrode distance in the change discharge tube often.
Gas discharge tube has two types of two utmost point discharge tubes and three utmost point discharge tubes.The gas discharge tube that has has contact conductor, and what have does not then have a contact conductor.
On structure, gas discharge tube can be regarded as a symmetrical switch with very little electric capacity, it turn-offs in normal working conditions, and its electrode resistance reaches more than the mega-ohms.When surge voltage surpassed the compressive resistance of Circuits System, gas discharge tube was breakdown and the arc discharge phenomenon takes place, because arc voltage is low, only is ten volts of youngsters, thereby can have limited the further rising of surge voltage at short notice.Gas discharge tube utilizes above-mentioned principle to limit surge voltage exactly, and circuit is played the overvoltage protection effect.
Along with superpotential reduction, by the also corresponding minimizing of the electric current of gas discharge tube.Keep the required minimum current value of arc light state when following when electric current drops to, arc discharge stops, and the aura of discharge tube extinguishes.
Gas discharge tube is mainly used to protect the external cable of communication system, traffic signal system, computer data system and various electronic equipments, the safe operation of electronic instrument.Gas discharge tube also is the protection component of the anti-lightning strike and instantaneous overvoltage of circuit.
Characteristics such as gas discharge tube has that current capacity is big, the response time is fast, electric capacity is little, volume is little, cost is low, stable performance and life-span are long; Shortcoming is at every turn after the transient voltage effect, and breakdown voltage property also can change.
According to the knowledge of the applicant, traditional utilize the metal zinc oxide piezo-resistance to absorb superpotential structure to exist volume big, not explosion-proof, problems such as it is big to be affected by the external environment, be not suitable for inflammable, explosive environments and use down, therefore design and develop a kind ofly being applicable to that ceramic discharge tube high pressure, good environmental adaptability is the task of top priority.
Summary of the invention
The purpose of this utility model is that it is little to design a kind of volume at the low problem of existing discharge tube voltage withstand class, can high voltage bearing ceramic high-voltage discharge tube.
The technical solution of the utility model is:
A kind of ceramic high-voltage discharge tube, it is characterized in that it mainly is made up of ripple porcelain tube 1, block 2, electrode 3 and conducting rod 4, block 2 is weldingly connected with the end face of ripple porcelain tube 1, conducting rod 4 is fixed on the medial surface of block 2, electrode 3 is saucer-like configuration and links to each other with conducting rod 4, be provided with installation nut 5 in the outside of block 2, on the block 2 of 1 one or both ends of ripple porcelain tube, be provided with the exhaust nozzle 6 that pump drainage gas is used; In the inner chamber of ripple porcelain tube 1, be provided with the ring-shaped step body 7 of a convex that is used to increase the service life and gains in strength at least.
The waviness width of described ripple porcelain tube 1 outer surface is identical or different, when the width of ripple not simultaneously, between the structural plane of the ripple of adjacent different in width, be provided with a cylinder transition face 8.
The surface coverage of described conducting rod 4 has layers of getter material 9.
Ring-shaped step body 7 places are equipped with radome 10 in the described ripple porcelain tube 1.
The beneficial effects of the utility model:
1, simple in structure, volume is little, and is safe and reliable, can bear the overvoltage height, the spacing of two electrodes in the discharge voltage of ceramic high-voltage discharge tube and the discharge tube, and electrode shape, electrode material, gas componant and pressure etc. are relevant between electrode.The puncture voltage of high-voltage discharge tube is relevant with the waveform that applies voltage, and is very responsive to superpotential climbing speed, and the overvoltage climbing speed is fast more, and overvoltage is high more, and breakdown time is fast more.Discharge tube of the present utility model is under impulsive discharge waveform 1.2/50 μ s: when surge voltage equaled 30.7KV, be 0.99 μ s breakdown time; When surge voltage equaled 27KV, be 1.5 μ s breakdown time; Surge voltage equals 20KV, breakdown times 17 μ s.
2, ceramic high-voltage discharge tube of the present invention can bear very big impulse current, instantaneous shock-resistant electric current big (greater than 10KA).Gas componant is relevant with pressure between shock-resistant current capacity and the electrode of pottery high-voltage discharge tube, and relevant with the caliber of discharge tube, caliber is big more, and shock-resistant electric current is big more.
3, owing to adopt vacuum seal structure, high direct voltage leakage current minimum (leakage current is less than 30 microamperes) when not discharging.
Do not generate heat when 4, discharge tube of the present utility model is worked, be specially adapted to vacuum switch switching overvoltage and atmospheric over voltage protection.
5, discharge tube polarity of the present utility model is not obvious, no residual voltage, no noise, the disruptive discharge in ceramic discharge tube fast of overvoltage energy discharges by discharge tube ground connection, be specially adapted to inflammable, explosive adverse circumstances.
6, ceramic high-voltage discharge tube good seal performance of the present utility model makes discharge voltage stable, is not subjected to the humidity and the effects of air pressure of external environment, and it is less influenced by ambient temperature.
7, discharge tube selfcapacity of the present utility model and inductance are all very little, so protected circuit is not had influence.Not only be applicable to direct current and power frequency high voltage circuit, but also be applicable in the high-frequency high-voltage circuit.
8, discharge tube of the present utility model has adopted the internal projecting ring structural design, so self-healing performance is good, can be repeatedly used, and the velocity of discharge is fast, and resume speed is fast, the repetition rate height, and long service life, easy to use, do not need to safeguard.
9, high-voltage discharge tube of the present utility model can the door of anti-the power frequency high voltage from 0.22kV～35kV, AC (interchange), can anti-high direct voltage from 0.5kV～70kV, DC.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1.
A kind of ceramic high-voltage discharge tube, the ripple porcelain tube 1 that it is mainly made by 95 porcelain, symmetry is installed in the block 2 at ripple porcelain tube 1 two ends respectively, electrode 3 and conducting rod 4 are formed, the block 2 of every end is weldingly connected with the corresponding end face of ripple porcelain tube 1, (end is last conducting rod to conducting rod 4, the other end is following conducting rod) be fixed on the medial surface of corresponding block 2, (end is a top electrode to electrode 3, the other end is a bottom electrode) be saucer-like configuration and link to each other with corresponding conducting rod 4, the surface of conducting rod 4 can be coated with layers of getter material 9, be provided with in each block outside of 2 and be used for the installation nut 5 that links to each other with positive source or ground wire, having at least a block to be provided with the exhaust nozzle 6 that a pump drainage gas is used on 2 on the block 2 at ripple porcelain tube 1 two ends, exhaust nozzle 6 can be blocked behind the pump drainage gas, also can be designed to an exhaust nozzle 6 and be used for one of exhaust and be used to bleed; In the inner chamber of ripple porcelain tube 1, be provided with the ring-shaped step body 7 of a convex that is used to increase the service life and gains in strength at least, a radome 10 preferably be installed at this ring-shaped step place.During concrete enforcement, the waviness width of described ripple porcelain tube 1 outer surface can be identical, also can be different, when the width of ripple not simultaneously, between the structural plane of the ripple of adjacent different in width, be provided with a cylinder transition face 8.
Discharge tube of the present utility model can be used for:
The overvoltage that produces when 1, absorbing the vacuum switch operation, to motor, power transformer etc. are protected.The overvoltage peak value size that produces during the vacuum switch disjunction, the equivalent characteristic impedance of oscillation circuit when the shut off value of contact material and disjunction when being decided by the switching tube disjunction.
2, be used to absorb electric line, communication, the lightning overvoltage on the program circuit and induction overvoltage protection.
3, be used for the wind power station lightning protection, can directly finish protection wind-powered electricity generation unit power circuit (lightning protection of 0A → 1 boundary is at the 400/690V mains side).
4, be used to absorb the overvoltage of operating and cut-offfing generation unexpectedly, High-Voltage Electrical Appliances are protected.
5, be used for radar duplexer.
6, be used for shot-firing circuits such as generator, photoflash lamp.
7, be used for Marx generator and impact high voltage circuit etc.
Operation principle of the present utility model is:
Under normal circumstances, when overvoltage was lower than the discharge tube place value, discharge tube two electrodes were in off-state, have very high insulation property between electrode.When overvoltage is higher than the discharge tube place value, (counts microsecond) fast between discharge tube two electrodes and puncture, and pass through big pulse current with very low internal resistance.The pulse current peak size is decided by the energy storage and the instantaneous peak energy of lightning wave of external circuit.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (4)
1. ceramic high-voltage discharge tube, it is characterized in that it mainly is made up of ripple porcelain tube (1), block (2), electrode (3) and conducting rod (4), block (2) is weldingly connected with the end face of ripple porcelain tube (1), conducting rod (4) is fixed on the medial surface of block (2), electrode (3) is saucer-like configuration and links to each other with conducting rod (4), be provided with installation nut (5) in the outside of block (2), on the block (2) of ripple porcelain tube (a 1) one or both ends, be provided with the exhaust nozzle (6) that pump drainage gas is used; In the inner chamber of ripple porcelain tube (1), be provided with the ring-shaped step body (7) of a convex that is used to increase the service life and gains in strength at least.
2. ceramic high-voltage discharge tube according to claim 1, the waviness width that it is characterized in that described ripple porcelain tube (1) outer surface is identical or different, when the width of ripple not simultaneously, between the structural plane of the ripple of adjacent different in width, be provided with a cylinder transition face (8).
3. ceramic high-voltage discharge tube according to claim 1 is characterized in that the surface coverage of described conducting rod (4) has layers of getter material (9).
4. ceramic high-voltage discharge tube according to claim 1 is characterized in that ring-shaped step body (7) locates to be equipped with radome (10) in the described ripple porcelain tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201251409U CN201616416U (en) | 2010-03-08 | 2010-03-08 | Ceramic high-voltage discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201251409U CN201616416U (en) | 2010-03-08 | 2010-03-08 | Ceramic high-voltage discharge tube |
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| Publication Number | Publication Date |
|---|---|
| CN201616416U true CN201616416U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201251409U Expired - Fee Related CN201616416U (en) | 2010-03-08 | 2010-03-08 | Ceramic high-voltage discharge tube |
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| CN (1) | CN201616416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715944A (en) * | 2013-11-27 | 2014-04-09 | 北京机械设备研究所 | Magnetic flux compression generator employing vacuum insulation |
| CN115318219A (en) * | 2022-10-12 | 2022-11-11 | 常州烯聚新材料科技有限公司 | Needle electrode discharge tube suitable for flash joule heating process and joule heating equipment |
-
2010
- 2010-03-08 CN CN2010201251409U patent/CN201616416U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715944A (en) * | 2013-11-27 | 2014-04-09 | 北京机械设备研究所 | Magnetic flux compression generator employing vacuum insulation |
| CN115318219A (en) * | 2022-10-12 | 2022-11-11 | 常州烯聚新材料科技有限公司 | Needle electrode discharge tube suitable for flash joule heating process and joule heating equipment |
| CN115318219B (en) * | 2022-10-12 | 2023-08-18 | 常州烯聚新材料科技有限公司 | Needle electrode discharge tube suitable for flash Joule heating process and Joule heating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20120308 |