CN201789288U - Composite lightning arrester - Google Patents
Composite lightning arrester Download PDFInfo
- Publication number
- CN201789288U CN201789288U CN2010202842232U CN201020284223U CN201789288U CN 201789288 U CN201789288 U CN 201789288U CN 2010202842232 U CN2010202842232 U CN 2010202842232U CN 201020284223 U CN201020284223 U CN 201020284223U CN 201789288 U CN201789288 U CN 201789288U
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- lightning arrester
- electrode
- discharge tube
- combined type
- adjustable
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Abstract
The utility model provides a composite lightning arrester, which belongs to the technical fields of power supply and distribution, solves the problems that the traditional discharge tube type lightning arrester has short service life and instable discharge characteristics, and comprises a lightning arrester body and a discharge tube, wherein one end of the lightning arrester body is connected with the discharge tube, and the other end of the lightning arrester body is grounded; and the discharge tube is a vacuum discharge tube. The composite lightning arrester has the advantages of long service life, stable discharge characteristics and wide range of application, and is convenient for maintenance.
Description
Technical field
The utility model belongs to power supply and distribution technique field, relates to a kind of lightning arrester, relates in particular to a kind of combined type lightning arrester.
Background technology
Lightning arrester is a kind of equipment that is used to protect substation equipment to exempt from the lightning surge attack and causes damage.When the lightning surge of transformer station is imported on road along the line above the protection of arrester level into; the lightning arrester in parallel with circuit at first discharges; with the introducing the earth of lightning current through good conductor safety; utilize lightning arrester to make the lightning voltage amplitude limitation below horizontal, electric equipment is protected at the lightning impulse that protected equipment allowed.
Lightning arrester in the market mainly comprises gap-like lightning arrester, discharge tubing lightning arrester, piezo-resistance class lightning arrester, suppresses multiple lightning arresters such as diode-like lightning arrester and carborundum class lightning arrester.Wherein, discharge tubing lightning arrester is compared to the lightning arrester of other types, under the less situation of volume, still kept stronger through-current capability, discharge tube inside on such lightning arrester has been full of inert gas, the purpose that can gas breakdown when the voltage in the circuit surpasses limit value reaches discharge, the application of discharge tube on lightning arrester make such lightning arrester, and leakage current is little and do not have electric arc and spurt in use.But, because of the discharge mode of discharge tube by gas discharge, so when work, can't guarantee definitely not have spark to spray from pressure releasing hole, and the appearance of this phenomenon can badly influence the useful life of discharge tube, in addition, flash-over characteristic in the discharging gap of air type discharge pipe is comparatively unstable, causes discharge tube to damage easily.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed the combined type lightning arrester that a kind of flash-over characteristic is stable and useful life is long.
The purpose of this utility model can realize by following technical proposal: a kind of combined type lightning arrester, comprise lightning arrester body and discharge tube, described lightning arrester body one end is connected other end ground connection with discharge tube, it is characterized in that described discharge tube is a vacuum discharge tube.
During installation; the other end of vacuum discharge tube with respect to lightning arrester body is connected in the circuit or appliance circuit that needs protection; when the voltage in the circuit does not surpass limit value; keep off-state in the vacuum discharge tube; there is not electric current on the lightning arrester body; when the voltage in the circuit surpasses limit value; disruptive discharge in the vacuum discharge tube; electric current enters among the earth by the lightning arrester body that is connected with vacuum discharge tube; after discharge finishes; voltage disconnects in the vacuum discharge tube, and lightning arrester body recovers normal condition.
In above-mentioned a kind of combined type lightning arrester, described discharge tube comprises a body with vacuum 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, and the terminals of adjustable electrode or fixed electrode are connected with lightning arrester body.
In above-mentioned a kind of combined type lightning arrester, between described discharge tube and the lightning arrester body for being threaded.When discharge tube or lightning arrester body maintenance, both can be separated, both can be connected once more after maintenance or replacing are finished.
In above-mentioned a kind of combined type lightning arrester, also be provided with the adjusting device of scalable discharging gap between described adjustable electrode and the body.Discharge tube begins that the discharge voltage value of disruptive discharge is relevant with its inner discharging gap, and the gap is big more, and the discharge voltage value is big more, and regulating discharging gap by adjusting device is the discharge voltage value that the scalable discharge tube can allow.
In above-mentioned a kind of combined type lightning arrester, 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 movement tendency that inserts 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, can only axially move back and forth along it by adjustable electrode, change 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 combined type lightning arrester, 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, and is remaining gap sealed state.
In above-mentioned a kind of combined type lightning arrester, 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 combined type lightning arrester, the electrode tip of described fixed electrode and adjustable electrode is all spherical in shape, hemisphere or cylindrical.
In above-mentioned a kind of combined type lightning arrester, described body adopts ceramic making to form.
In above-mentioned a kind of combined type lightning arrester, described body adopts glass to be made.
Compared with prior art, this combined type lightning arrester has the following advantages:
1, the discharge tube in this combined type lightning arrester adopts vacuum discharge tube; state is evacuated in this discharge tube; there is not spark in pressure releasing hole, to spray when making its work; each parts in the discharge tube have been protected; prolonged its useful life; in addition, the flash-over characteristic of vacuum discharge tube is comparatively stable, and is not fragile.
2, the discharging gap of the discharge tube in this combined type lightning arrester can be regulated by regulating part, thereby changes the discharge voltage that discharge tube can bear, and makes the combined type lightning arrester of same specification can be applied to multiple different place, and applicability is stronger.
3, between the discharge tube in this combined type lightning arrester and the lightning arrester body for being threaded, make easy accessibility between the two, and when both one of during damage, can change accordingly or keep in repair, reduced maintenance time, reduced maintenance cost.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of this combined type lightning arrester.
Among the figure, 1, lightning arrester body; 11, go up terminals; 12, following terminals; 2, discharge tube; 21, body; 21a, cavity; 22, fixed electrode; 23, adjustable electrode; 24, the body of rod; 25, electrode tip; 26, terminals; 27, discharging gap; 28, regulating part; 29, body.
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, a kind of combined type lightning arrester comprises the discharge tube 2 of being located at the upper end and the lightning arrester body 1 that is connected in discharge tube 2 belows.In the present embodiment, discharge tube 2 is a vacuum discharge tube 2, and lightning arrester body 1 is a zinc oxide arrester, and zinc oxide arrester comprises last terminals 11 that are connected in its upper end and the following terminals 12 that are connected in its lower end, last terminals 11 are connected with vacuum discharge tube 2, following terminals 12 ground connection.
The terminals 26 of adjustable electrode 23 are positioned at the downside of body 21, and the regulating part 28 of the annular that is threaded.Also be provided with a tubular body 29 that is socketed on the adjustable electrode 23 in the cavity 21a, body 29 is between the electrode tip 25 of adjustable electrode 23 and cavity 21a inwall and can axially be compressed or stretch along it, fixedlys connected with cavity 21a inwall circumferential seal with the body of rod 24 of adjustable electrode 23 respectively in the two ends of body 29.In the present embodiment, body 29 is a corrugated stainless steel tubing.
When the discharging gap 27 of discharge tube 2 is determined, owing to be vacuum state in the cavity 21a of discharge tube 2, atmospheric pressure acts on the terminals 26 of adjustable electrode 23, the regulating part 28 that the terminals 26 of adjustable electrode 23 are subjected to be threaded with it hinders, only have a trend of moving and can't move in body 21 cavity 21a, this moment, both electrode tip 25 formed discharging gaps 27 of fixed electrode 22 and adjustable electrode 23 kept stable.
When clockwise rotating regulating part 28, adjustable electrode 23 and regulating part 28 relatively rotate, owing to being subjected to adjustable electrode 23, regulating part 28 is pressed on all the time on body 21 lower surfaces from the active force that the atmospheric pressure transmission comes, can't axial motion, therefore by adjustable electrode 23 outwards motion satisfy and the relatively rotating of 28 of regulating parts.Because of fixed electrode 22 and adjustable electrode 23 along same straight line setting, when adjustable electrode 23 during, can change the size of discharging gap 27 along its axial motion.Adjustable electrode 23 outwards moves, and discharging gap 27 becomes big, and body 29 is compressed simultaneously.Otherwise when rotating counterclockwise regulating part 28, adjustable electrode 23 moves in cavity 21a, and discharging gap 27 diminishes, and body 29 is stretched simultaneously.Body 29 is no matter be that its two-port is all fixedlyed connected with the inwall circumferential seal of body 21 cavity 21a with the body of rod 24 of adjustable electrode 23, has guaranteed the overall tightness of cavity 21a when stretching or being compressed.
In addition; protection at some shunt circuits; can be with this combined type lightning arrester as a protection utmost point; form star by several protection utmost points and constitute alternate protective device; protect the utmost point as phase ground protective device by one; with alternate protective device and protective device series connection mutually, and be connected on each branch line of shunt circuit, be used to protect this circuit.The body 21 of discharge tube 2 can be in a tubular form, and adopt pottery or glass to make, and plays support fixation electrode 22, adjustable electrode 23 and insulate.In addition, the electrode tip 25 of fixed electrode 22 and adjustable electrode 23 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. a combined type lightning arrester comprises lightning arrester body (1) and discharge tube (2), and described lightning arrester body (1) one end is connected with discharge tube (2), and other end ground connection is characterized in that, described discharge tube (2) is a vacuum discharge tube.
2. a kind of combined type lightning arrester according to claim 1, it is characterized in that, described discharge tube (2) comprises a body (21) with vacuum cavity (21a), body (21) is provided with fixed electrode (22) and adjustable electrode (23), one end of described fixed electrode (22) and adjustable electrode (23) all is inserted in the cavity (21a) of body (21) as electrode tip (25) and forms discharging gap (27), the other end all is positioned at body (21) outside as terminals (26), body (21) adopts insulating material to make, and the terminals (26) of adjustable electrode (23) or fixed electrode (22) are connected with lightning arrester body (1).
3. a kind of combined type lightning arrester according to claim 1 and 2 is characterized in that, between described discharge tube (2) and the lightning arrester body (1) for being threaded.
4. a kind of combined type lightning arrester according to claim 2 is characterized in that, also is provided with the adjusting device of scalable discharging gap (27) between described adjustable electrode (23) and the body (21).
5. a kind of combined type lightning arrester according to claim 4, it is characterized in that, described adjusting device comprises that is used to regulate the regulating part (28) that adjustable electrode (23) inserts body (21) cavity (21a) degree of depth, regulating part (28) thread bush is connected on the terminals (26) of adjustable electrode (23), the electrode tip (25) of above-mentioned adjustable electrode (23) can with adjustable electrode (23) move back and forth with this change and fixed electrode (22) electrode tip (25) between the size of discharging gap (27), also be provided with hermetically-sealed construction between adjustable electrode (23) and the body (21).
6. a kind of combined type lightning arrester according to claim 5, it is characterized in that, described hermetically-sealed construction comprises a body (29) that is arranged in body (21) cavity (21a), described body (29) is tubular and can axially compresses and stretch along it, one end of body (29) is fixedlyed connected with adjustable electrode (23) circumferential seal, and the other end is fixedlyed connected with the inwall circumferential seal of body (21) cavity (21a).
7. a kind of combined type lightning arrester according to claim 6 is characterized in that described body (29) is a corrugated stainless steel tubing.
8. according to claim 2 or 4 or 5 or 6 or 7 described a kind of combined type lightning arresters, it is characterized in that all spherical in shape, the hemisphere or cylindrical of electrode tip (25) of described fixed electrode (22) and adjustable electrode (23).
9. according to claim 2 or 4 or 5 or 6 or 7 described a kind of combined type lightning arresters, it is characterized in that described body (21) adopts ceramic making to form.
10. according to claim 2 or 4 or 5 or 6 or 7 described a kind of combined type lightning arresters, it is characterized in that described body (21) adopts glass to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202842232U CN201789288U (en) | 2010-08-06 | 2010-08-06 | Composite lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202842232U CN201789288U (en) | 2010-08-06 | 2010-08-06 | Composite lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789288U true CN201789288U (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202842232U Expired - Fee Related CN201789288U (en) | 2010-08-06 | 2010-08-06 | Composite lightning arrester |
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| CN (1) | CN201789288U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319756A (en) * | 2014-11-11 | 2015-01-28 | 苏州九云丰电子科技有限公司 | Novel gap lightning protection device |
| CN108281885A (en) * | 2017-12-07 | 2018-07-13 | 武汉水院电气有限责任公司 | The low pressure termination electrode of transmission line of electricity gap arrester |
| CN108521077A (en) * | 2018-04-11 | 2018-09-11 | 固力发电气有限公司 | A kind of Penetrative lightning arrester |
| CN108683080A (en) * | 2018-06-08 | 2018-10-19 | 贵州电网有限责任公司 | A kind of new gas arc extinguishing arrester |
| CN109283442A (en) * | 2018-11-06 | 2019-01-29 | 云南电网有限责任公司红河供电局 | A kind of string benefit spark gap impact test apparatus |
| CN109887693A (en) * | 2019-04-02 | 2019-06-14 | 泰州学院 | A kind of variable in-line gap composite insulating metal oxide lightning arrester |
| CN112071534A (en) * | 2020-09-03 | 2020-12-11 | 合肥众甫工业技术有限公司 | Overvoltage protector based on corrugated pipe buffering assembly |
-
2010
- 2010-08-06 CN CN2010202842232U patent/CN201789288U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319756A (en) * | 2014-11-11 | 2015-01-28 | 苏州九云丰电子科技有限公司 | Novel gap lightning protection device |
| CN104319756B (en) * | 2014-11-11 | 2017-05-24 | 苏州九云丰电子科技有限公司 | Novel gap lightning protection device |
| CN108281885A (en) * | 2017-12-07 | 2018-07-13 | 武汉水院电气有限责任公司 | The low pressure termination electrode of transmission line of electricity gap arrester |
| CN108521077A (en) * | 2018-04-11 | 2018-09-11 | 固力发电气有限公司 | A kind of Penetrative lightning arrester |
| CN108683080A (en) * | 2018-06-08 | 2018-10-19 | 贵州电网有限责任公司 | A kind of new gas arc extinguishing arrester |
| CN109283442A (en) * | 2018-11-06 | 2019-01-29 | 云南电网有限责任公司红河供电局 | A kind of string benefit spark gap impact test apparatus |
| CN109887693A (en) * | 2019-04-02 | 2019-06-14 | 泰州学院 | A kind of variable in-line gap composite insulating metal oxide lightning arrester |
| CN112071534A (en) * | 2020-09-03 | 2020-12-11 | 合肥众甫工业技术有限公司 | Overvoltage protector based on corrugated pipe buffering assembly |
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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: 20110406 Termination date: 20130806 |