CN201812789U - Vacuum discharging tube - Google Patents
Vacuum discharging tube Download PDFInfo
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- CN201812789U CN201812789U CN2010202841969U CN201020284196U CN201812789U CN 201812789 U CN201812789 U CN 201812789U CN 2010202841969 U CN2010202841969 U CN 2010202841969U CN 201020284196 U CN201020284196 U CN 201020284196U CN 201812789 U CN201812789 U CN 201812789U
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- adjustable electrode
- discharge tube
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Abstract
The utility model provides a vacuum discharging tube, belonging to the technical field of power supply and power distribution and solving the problem of shorter service life of the existing discharging tube. The vacuum discharging tube comprises a body with a cavity; the body is provided with a fixed electrode and an adjustable electrode; one end of the fixed electrode and one end of the adjustable electrode are respectively used as electrode ends to be inserted into the cavity so as to form a discharging gap, and the other end of the fixed electrode and the other end of the adjustable electrode are respectively used as wiring ends to be positioned at the outer sides of the body; and the body is made of insulating material and the inside of the cavity of the body is vacuum. The vacuum discharging tube has the advantages that the service life is long, the application range is wide and larger current and larger voltage can be borne.
Description
Technical field
The utility model belongs to power supply and distribution technique field, relates to a kind of vacuum discharge tube.
Background technology
Discharge tube is a kind of high voltage protective element that is used in the equipment input, when the voltage at its two ends exceeds its protection specification value, the disruptive discharge phenomenon can occur between its internal electrode, sponges the high voltage of input by protection electric capacity etc.When being lower than its protection specification value, the voltage at its two ends can recover state of insulation between internal electrode.
The electrical characteristic of opening discharge tube discharge path depends primarily on environmental parameter, thereby the stability of work can not get guaranteeing.In order to improve the job stability of 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.
At present, modally exactly sparking electrode is inserted in the atmosphere, but when sparking electrode carries out disruptive discharge, Guan the arc extinction performance of interior atmosphere is bad, the spark of discharge generation can be with electrode erosion, thereby influences the useful life of discharge tube.Some are also arranged is to charge into fire-retardant gas in discharge tube, though electrode erosion reduces to some extent, also can only prolong the useful life of discharge tube very limitedly.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing discharge tube, and has proposed a kind of discharge tube that can increase the service life largely.
The purpose of this utility model can realize by following technical proposal: a kind of vacuum discharge tube, comprise a body with cavity, body is provided with fixed electrode and adjustable electrode, one end of described fixed electrode and adjustable electrode all is inserted in the cavity of body as electrode tip and forms discharging gap, the other end all is positioned at the body outside as terminals, body adopts insulating material to make, it is characterized in that, and be vacuum in the cavity of described body.
In above-mentioned a kind of vacuum discharge tube, also be provided with the adjusting device of scalable discharging gap between described adjustable electrode and the body.The size of discharging gap is relevant with the discharge voltage that discharge tube can bear, and discharging gap is big more, and the voltage that can bear is also big more.Can regulate the size of discharging gap by this adjusting device, regulate the discharge voltage of discharge tube with this.
In above-mentioned a kind of vacuum discharge tube, described adjusting device comprises that is used to regulate the regulating part that adjustable electrode inserts the body cavity depth, the regulating part thread bush is connected on the terminals of adjustable electrode, the electrode tip of above-mentioned adjustable electrode can with adjustable electrode move back and forth with this change and the fixed electrode electrode tip between the size of discharging gap, also be provided with hermetically-sealed construction between adjustable electrode and the body.
The electrode tip of fixed electrode is positioned at the adjustable electrode electrode tip to be regulated on the line stretcher in path, when the electrode tip motion of adjustable electrode, can change and the fixed electrode electrode tip between the size of spacing (discharging gap just).Owing to be vacuum state in the cavity of discharge tube, be subjected to the effect of external atmosphere pressure, adjustable electrode has the self-closing power of inserting to the body cavity all the time, and regulating part is also because threaded connection relation is subjected to the adjustable electrode effect to be pressed on the outer surface of body.During adjusting, form by the turn regulating part is regulated, because regulating part is subjected to the active force of adjustable electrode to be pressed on this external surface all the time, can't axial motion, when regulating part and adjustable electrode relatively rotate, adjustable electrode can only be selected axially to move back and forth along it, changes the degree of depth of inserting in the body cavity with this.Because adjustable electrode can move with respect to body, so certainly exists the gap between body and the adjustable electrode, at this time just needs hermetically-sealed construction to seal, guarantee in the process of regulating, to remain vacuum state in the cavity of body.
In above-mentioned a kind of vacuum discharge tube, described hermetically-sealed construction comprises a body that is arranged in the body cavity, described body is tubular and can axially compresses and stretch along it, one end of body is fixedlyed connected with the adjustable electrode circumferential seal, and the other end is fixedlyed connected with the inwall circumferential seal of body cavity.By body the gap between adjustable electrode and the body is sealed.During the adjustable electrode motion, body also is compressed thereupon or stretches, but is remaining gap sealed state.
In above-mentioned a kind of vacuum discharge tube, described body is a corrugated stainless steel tubing.Corrugated stainless steel tubing has certain retractility, and the intensity that it had simultaneously can overcome atmospheric active force again, adjustable electrode is remained on regulate the back state.
In above-mentioned a kind of vacuum discharge tube, the electrode tip of described fixed electrode and adjustable electrode is all spherical in shape.
In above-mentioned a kind of vacuum discharge tube, the electrode tip of described fixed electrode and adjustable electrode all is hemisphere.Spherical or hemispheric electrode tip can guarantee the accuracy of marked voltage of discharge tube, and stability better.
In above-mentioned a kind of vacuum discharge tube, the electrode tip of described fixed electrode and adjustable electrode is all cylindrical.Columniform electrode tube production and processing is comparatively simple.
In above-mentioned a kind of vacuum discharge tube, described body adopts ceramic making to form.
In above-mentioned a kind of vacuum discharge tube, described body adopts glass to be made.
Compared with prior art, this vacuum discharge tube is evacuated intrinsic cavity, makes discharge tube can bear bigger drop-out current, and it can be applied in 3000 volts of above high-tension lines, prolongs its useful life simultaneously.In addition, can also adjust the size of discharging gap after being provided with adjusting device, change its discharge voltage as required, can be applicable to different fields.
Description of drawings
The sectional structure schematic diagram of this vacuum of Fig. 1 discharge tube.
Among the figure, 1, body; 1a, cavity; 2, fixed electrode; 3, adjustable electrode; 3a, the body of rod; 4, electrode tip; 5, terminals; 6, regulating part; 7, body; 8, discharging gap.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1; this vacuum discharge tube comprises a body 1; tool is pumped into the closed cavity 1a of vacuum in the body 1; the upper and lower shaft-like fixed electrode 2 and the adjustable electrode 3 of being respectively equipped with of body 1; the inner end of fixed electrode 2 and adjustable electrode 3 all is inserted in the cavity 1a of body 1 as electrode tip 4; the outer end of two electrodes then all is positioned at body 1 outside as terminals 5, is used for being connected with circuit, the electrical equipment of required protection.Both electrode tips 4 of fixed electrode 2 and adjustable electrode 3 are provided with in opposite directions and form discharging gap 8, and in the present embodiment, the electrode tip 4 of two electrodes all is hemisphere, and adopts alloy material to make.
The terminals 5 of adjustable electrode 3 are positioned at body 1 outside, and the regulating part 6 of the annular that is threaded.Also be provided with a tubular body 7 that is socketed on the adjustable electrode 3 in the cavity 1a, body 7 is between the electrode tip 4 of adjustable electrode 3 and cavity 1a inwall and can axially be compressed and stretch along it, fixedlys connected with cavity 1a inwall circumferential seal with the body of rod 3a of adjustable electrode 3 respectively in the two ends of body 7.In the present embodiment, body 7 can use corrugated stainless steel tubing.
Under the initial condition, atmospheric pressure acts on the adjustable electrode 3, the terminals 5 of adjustable electrode 3 are kept off by regulating part 6, therefore 3 of adjustable electrodes have the trend of a continuation motion in body 1 cavity 1a and can't continue deeply, and this moment, the electrode tip 4 formed discharging gaps 8 of fixed electrode 2 and adjustable electrode 3 kept stablizing.
Because the discharge voltage of discharge tube is relevant with the size of discharging gap 8, when needs are regulated discharge voltage, just need regulate discharging gap 8, at this moment, we can realize by turn regulating part 6.
Clockwise turn regulating part 6, adjustable electrode 3 and regulating part 6 relatively rotate, owing to being subjected to adjustable electrode 3, regulating part 6 is pressed on all the time on body 1 outer surface from the active force that the atmospheric pressure transmission comes, can't axial motion, therefore have to by adjustable electrode 3 outwards motion satisfy and the relatively rotating of regulating part 6.As shown in Figure 1, fixed electrode 2 and adjustable electrode 3 be along same straight line setting, when adjustable electrode 3 during along this rectilinear motion, can change the size of discharging gap 8.When adjustable electrode 3 outwards moved, discharging gap 8 became big, and body 7 is compressed simultaneously.Otherwise when rotating counterclockwise regulating part 6, adjustable electrode 3 moves in cavity 1a, and discharging gap 8 diminishes, and body 7 is stretched simultaneously.Body 7 is no matter be that its two-port is all fixedlyed connected with the inwall circumferential seal of body 1 cavity 1a with the body of rod 3a of adjustable electrode 3, has guaranteed the overall tightness of cavity 1a when stretching or being compressed.
Body 1 can adopt pottery or glass to make in a tubular form, plays support fixation electrode 2, adjustable electrode 3 and insulation.In addition, the electrode tip 4 of fixed electrode 2 and adjustable electrode 3 can also be cylindrical, spherical or other shapes.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. vacuum discharge tube, comprise a body (1) with cavity (1a), body (1) is provided with fixed electrode (2) and adjustable electrode (3), one end of described fixed electrode (2) and adjustable electrode (3) all is inserted in the cavity (1a) of body (1) as electrode tip (4) and forms discharging gap (8), the other end all is positioned at body (1) outside as terminals (5), body (1) adopts insulating material to make, it is characterized in that, be vacuum in the cavity (1a) of described body (1).
2. a kind of vacuum discharge tube according to claim 1 is characterized in that, also is provided with the adjusting device of scalable discharging gap (8) between described adjustable electrode (3) and the body (1).
3. a kind of vacuum discharge tube according to claim 2, it is characterized in that, described adjusting device comprises that is used to regulate the regulating part (6) that adjustable electrode (3) inserts body (1) cavity (1a) degree of depth, regulating part (6) thread bush is connected on the terminals (5) of adjustable electrode (3), the electrode tip (4) of above-mentioned adjustable electrode (3) can with adjustable electrode (3) move back and forth with this change and fixed electrode (2) electrode tip (4) between the size of discharging gap (8), also be provided with hermetically-sealed construction between adjustable electrode (3) and the body (1).
4. a kind of vacuum discharge tube according to claim 3, it is characterized in that, described hermetically-sealed construction comprises a body (7) that is arranged in body (1) cavity (1a), described body (7) is tubular and can axially compresses and stretch along it, one end of body (7) is fixedlyed connected with adjustable electrode (3) circumferential seal, and the other end is fixedlyed connected with the inwall circumferential seal of body (1) cavity (1a).
5. a kind of vacuum discharge tube according to claim 4 is characterized in that, described body (7) is a corrugated stainless steel tubing.
6. according to claim 1 or 2 or 3 or 4 or 5 described a kind of vacuum discharge tubes, it is characterized in that the electrode tip (4) of described fixed electrode (2) and adjustable electrode (3) is all spherical in shape.
7. according to claim 1 or 2 or 3 or 4 or 5 described a kind of vacuum discharge tubes, it is characterized in that the electrode tip (4) of described fixed electrode (2) and adjustable electrode (3) all is hemisphere.
8. according to claim 1 or 2 or 3 or 4 or 5 described a kind of vacuum discharge tubes, it is characterized in that the electrode tip (4) of described fixed electrode (2) and adjustable electrode (3) is all cylindrical.
9. according to claim 1 or 2 or 3 or 4 or 5 described a kind of vacuum discharge tubes, it is characterized in that described body (1) adopts ceramic making to form.
10. according to claim 1 or 2 or 3 or 4 or 5 described a kind of vacuum discharge tubes, it is characterized in that described body (1) adopts glass to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202841969U CN201812789U (en) | 2010-08-06 | 2010-08-06 | Vacuum discharging tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202841969U CN201812789U (en) | 2010-08-06 | 2010-08-06 | Vacuum discharging tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812789U true CN201812789U (en) | 2011-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202841969U Expired - Lifetime CN201812789U (en) | 2010-08-06 | 2010-08-06 | Vacuum discharging tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812789U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894722A (en) * | 2010-08-06 | 2010-11-24 | 蒋贤华 | Vacuum discharge tube |
| CN104393489A (en) * | 2014-11-24 | 2015-03-04 | 南京信息工程大学 | Gas discharge tube with movable electrodes |
| CN106841713A (en) * | 2016-12-30 | 2017-06-13 | 平高集团有限公司 | A kind of very fast transient overvoltage generation device |
| CN108257835A (en) * | 2018-02-07 | 2018-07-06 | 东莞市阿甘半导体有限公司 | A kind of gas-discharge tube and over-pressure safety device |
| CN110556710A (en) * | 2018-05-30 | 2019-12-10 | 平高集团有限公司 | Vacuum discharge tube and lightning arrester using same |
-
2010
- 2010-08-06 CN CN2010202841969U patent/CN201812789U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894722A (en) * | 2010-08-06 | 2010-11-24 | 蒋贤华 | Vacuum discharge tube |
| CN101894722B (en) * | 2010-08-06 | 2014-04-16 | 蒋贤华 | Vacuum discharge tube |
| CN104393489A (en) * | 2014-11-24 | 2015-03-04 | 南京信息工程大学 | Gas discharge tube with movable electrodes |
| CN106841713A (en) * | 2016-12-30 | 2017-06-13 | 平高集团有限公司 | A kind of very fast transient overvoltage generation device |
| CN108257835A (en) * | 2018-02-07 | 2018-07-06 | 东莞市阿甘半导体有限公司 | A kind of gas-discharge tube and over-pressure safety device |
| CN110556710A (en) * | 2018-05-30 | 2019-12-10 | 平高集团有限公司 | Vacuum discharge tube and lightning arrester using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20140416 |
|
| RGAV | Abandon patent right to avoid regrant |