CN102394170B - Protection device of cylindrical self-healing capacitor with overpressure isolator - Google Patents
Protection device of cylindrical self-healing capacitor with overpressure isolator Download PDFInfo
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- CN102394170B CN102394170B CN 201110180087 CN201110180087A CN102394170B CN 102394170 B CN102394170 B CN 102394170B CN 201110180087 CN201110180087 CN 201110180087 CN 201110180087 A CN201110180087 A CN 201110180087A CN 102394170 B CN102394170 B CN 102394170B
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Abstract
The invention provides a protection device of a cylindrical self-healing capacitor with an overpressure isolator. The protection device comprises an upper fixing member mounted on a cover plate of the capacitor, a lower fixing member mounted below an overpressure isolation groove of the capacitor, and a normally-open contact switch and a normally-closed contact switch having one ends mounted on the upper fixing member and the other ends mounted on the lower fixing member, wherein the switching-on and switching-off of the normally-open contact switch and the normally-closed contact switch change with the relative displacement of the upper fixing member and the lower fixing member. When the overpressure isolation groove of a defective capacitor has an action distance of 3 to 4 mm, the protection device provided by the invention can provide an auxiliary signal to prompt operators on duty, or trigger a fault alarm device, or directly connect a switch control circuit to disconnect the defective capacitor through the switch, thereby preventing the seepage of liquid impregnant or even avoiding the occurrence of a fire due to the breakage of a capacitor casing. In addition, the protection device can detect the damaged capacitor in time so as to avoid the occurrence of serious circuit faults and prevent accident extension.
Description
Technical field
The invention belongs to the category of power equipment coupling capacitor product, relate to a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector.
Background technology
Most cylindrical self healing capacitor all adopts whole overpressure protection device, it is overpressure disconnector, directly break the capacitor lead during protective device action, make the capacitor loop of deactivating, fault actions distance is generally 6-10mm (as depicted in figs. 1 and 2), and its shortcoming is: 1. arc current is excessive in the time of may breaking because of lead-in wire causes capacitor casing to break to make the liquid impregnation agent seepage even catches fire; 2. may also should from the loop, not withdraw from even if capacitor damages because the electric circuit characteristic requirement, but capacitor damages after all, if untimely maintenance or replacing then may make whole circuit more serious fault occur, make fault spread.
In view of above defective, be necessary in fact to provide a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector to solve the problems of the technologies described above.
Summary of the invention
The invention provides a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector; be installed on the capacitor casing; auxiliary signal is provided when fault capacitor excess pressure isolation channel operating distance 3-4mm; with prompting, warning operator; or the triggering accident warning device, or directly access switch control circuit by switch disengagement failure capacitor.
The technical solution adopted in the present invention is: a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector; comprise the upper fixing element that is installed on the capacitor cover plate, the lower fixture that is installed in capacitor excess pressure isolation channel below; and one end be installed in the upper fixing element other end and be installed in normally opened contact switch and normally-closed contact switch on the lower fixture, the disconnection of described normally opened contact switch and normally-closed contact switch and closedly change along with the relative displacement between upper fixing element and the lower fixture.
Described lower fixture is the annulus anchor ear;
Described protective device further includes contactor, and the control coil of this contactor is connected with the normally-closed contact switch;
Described protective device further comprises voice guard, and this voice guard is connected with the normally-closed contact switch;
Described protective device further comprises visual alarm, and this visual alarm is connected with the normally-closed contact switch;
A kind of protective device with the cylindrical self healing capacitor of overpressure disconnector; comprise the upper fixing element that is installed on the capacitor cover plate; be installed in the lower fixture of capacitor excess pressure isolation channel below; and the checkout gear for detection of excess pressure that is mainly formed by normally opened contact switch and normally-closed contact switch; when upper fixing element and lower fixture are positioned at initial position; described normally opened contact switch disconnects; the normally-closed contact switch closure; when capacitor breaks down when making its internal pressure overpressure isolation channel limit value; upper fixing element and lower fixture produce relative displacement; when this displacement reaches 3-4mm; upper fixing element and lower fixture are positioned at the second place; the normally opened contact switch closure, the normally-closed contact switch disconnects.
The protective device of the cylindrical self healing capacitor of band overpressure disconnector of the present invention has the following advantages at least: the present invention installs fixture at capacitor cover plate; fixture under installing below the capacitor excess pressure isolation channel; between upper fixing element and lower fixture, be provided with normally opened contact switch and normally-closed contact switch; when capacitor breaks down when making its internal pressure overpressure isolation channel limit value; upper fixing element and lower fixture produce relative displacement; when this displacement reaches 3-4mm; the normally opened contact switch closure, the normally-closed contact switch disconnects.Thus; protective device of the present invention provides auxiliary signal when fault capacitor excess pressure isolation channel operating distance 3-4mm; with prompting, warning operator, or trigger accident warning device, or directly access switch control circuit by switch disengagement failure capacitor; thereby the phenomenon of having avoided capacitor casing to break and make the liquid impregnation agent seepage even catch fire; in addition, if capacitor is damaged, can in time find; avoid circuit more serious fault to occur, make fault spread.
Description of drawings
Fig. 1 is the capacitor outline drawing of not installing protective device of the present invention, and capacitor is normal condition;
Fig. 2 be do not install protective device of the present invention, capacitor the Fault Isolation groove pulled open the outline drawing of 6-10mm;
Fig. 3 is the capacitor outline drawing of having installed protective device of the present invention, and capacitor is normal condition;
Fig. 4 be installed protective device of the present invention, capacitor the Fault Isolation groove pulled open the outline drawing of 3-4mm;
Fig. 5 is the protection winding diagram that utilizes normally-closed contact access switching single-phase electricity container.
Embodiment
See also shown in Figure 3; the protective device of the cylindrical self healing capacitor of band overpressure disconnector of the present invention is to install fixture 2 at conventional capacitor (shown in Figure 1) cover plate; mounting circular ring anchor ear 3 below excess pressure isolation channel 1; mounting distance control type normally opened contact switch 4 and normally-closed contact switch 5 on upper fixing element 2 and the annulus anchor ear 3, binding post 6 position upper fixing elements 2.
Operation principle: as shown in Figure 4; during capacitor faults; internal pressure increases gradually; when pressure surpasses excess pressure isolation channel 1 limit value; excess pressure isolation channel 1 will be pulled open makes upper fixing element 2 and annulus anchor ear 3 produce relative displacement; when distance reaches 3-4mm; apart from control type normally opened contact switch 4 closures; simultaneously apart from control type normally-closed contact switch 5 open circuits, with the signal of normally opened contact switch 4 and normally-closed contact switch 5 according to circuit requirements access contactor control end; voice guard; fault can be found in visual alarm or device main protection unit within the shortest time; isolated fault.
With reference to Fig. 5, be the protection winding diagram of simple contactor switching single-phase electricity container, wherein, A, B are respectively the electric power incoming line of capacitor, and K1, K2 are the signal input part of switched capacitor, receive to drop into signal.Described contactor control coil is connected with protective device normally-closed contact switch; signal input part K1, K2 by switched capacitor send the input signal, and major loop is connected, when capacitor faults; normally-closed contact is opened; contactor drops into blackout, and contactor coil has a power failure, and contactor is opened; the capacitor power down; be undoubtedly safe and reliablely by contactor disengagement failure capacitor, the normally opened contact of simultaneous faults capacitor is closed, triggers audible-visual annunciator.
The above only is one embodiment of the present invention, it or not whole or unique execution mode, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification of the present invention is claim of the present invention and contains.
Claims (6)
1. protective device with the cylindrical self healing capacitor of overpressure disconnector; it is characterized in that: comprise the upper fixing element (1) that is installed on the capacitor cover plate, the lower fixture (3) that is installed in capacitor excess pressure isolation channel below; and one end be installed in upper fixing element (1) other end and be installed in normally opened contact switch (4) and normally-closed contact switch (5) on the lower fixture (3), the disconnection of described normally opened contact switch (4) and normally-closed contact switch (5) and closedly change along with the relative displacement between upper fixing element (1) and the lower fixture (3).
2. a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector as claimed in claim 1, it is characterized in that: described lower fixture (3) is the annulus anchor ear.
3. a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector as claimed in claim 1, it is characterized in that: described protective device further includes contactor, and the control coil of this contactor is connected with normally-closed contact switch (5).
4. a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector as claimed in claim 1, it is characterized in that: described protective device further comprises voice guard, this voice guard is connected with normally-closed contact switch (5).
5. a kind of protective device with the cylindrical self healing capacitor of overpressure disconnector as claimed in claim 1, it is characterized in that: described protective device further comprises visual alarm, this visual alarm is connected with normally-closed contact switch (5).
6. protective device with the cylindrical self healing capacitor of overpressure disconnector; it is characterized in that: comprise the upper fixing element (1) that is installed on the capacitor cover plate; be installed in the lower fixture (3) of capacitor excess pressure isolation channel below; and the checkout gear for detection of excess pressure that is mainly formed by normally opened contact switch and normally-closed contact switch; when upper fixing element (1) and lower fixture (3) are positioned at initial primary importance; described normally opened contact switch disconnects; the normally-closed contact switch closure; when capacitor breaks down when making its internal pressure overpressure isolation channel limit value; upper fixing element (1) and lower fixture (3) produce relative displacement; when this displacement reaches 3-4mm; upper fixing element (1) and lower fixture (3) are positioned at the second place; normally opened contact switch (4) closure, the normally-closed contact switch disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110180087 CN102394170B (en) | 2011-06-29 | 2011-06-29 | Protection device of cylindrical self-healing capacitor with overpressure isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110180087 CN102394170B (en) | 2011-06-29 | 2011-06-29 | Protection device of cylindrical self-healing capacitor with overpressure isolator |
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| Publication Number | Publication Date |
|---|---|
| CN102394170A CN102394170A (en) | 2012-03-28 |
| CN102394170B true CN102394170B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110180087 Active CN102394170B (en) | 2011-06-29 | 2011-06-29 | Protection device of cylindrical self-healing capacitor with overpressure isolator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440980A (en) * | 2013-08-26 | 2013-12-11 | 铜陵亿亨达电子有限责任公司 | Pulse capacitor with pressure switch |
| CN105161296A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Self-healing low-voltage electric power capacitor |
| CN108037385A (en) * | 2017-11-30 | 2018-05-15 | 安徽开博电容科技有限公司 | A kind of substep test method for self healing capacitor self-healing failure protective value test |
| CN108573810A (en) * | 2018-05-22 | 2018-09-25 | 安徽普和电子有限公司 | A kind of interior explosion-proof capacitor device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2466785Y (en) * | 2001-02-23 | 2001-12-19 | 冯申荣 | Capacitor overpressure protection device |
| CN2911911Y (en) * | 2006-07-11 | 2007-06-13 | 锦州辽西电器成套设备有限公司 | Drying and self-healing capacitor element having double protections |
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2011
- 2011-06-29 CN CN 201110180087 patent/CN102394170B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2466785Y (en) * | 2001-02-23 | 2001-12-19 | 冯申荣 | Capacitor overpressure protection device |
| CN2911911Y (en) * | 2006-07-11 | 2007-06-13 | 锦州辽西电器成套设备有限公司 | Drying and self-healing capacitor element having double protections |
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| Publication number | Publication date |
|---|---|
| CN102394170A (en) | 2012-03-28 |
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