CN1032469A - Vacuum electric-discharge device - Google Patents
Vacuum electric-discharge device Download PDFInfo
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- CN1032469A CN1032469A CN88106456A CN88106456A CN1032469A CN 1032469 A CN1032469 A CN 1032469A CN 88106456 A CN88106456 A CN 88106456A CN 88106456 A CN88106456 A CN 88106456A CN 1032469 A CN1032469 A CN 1032469A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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Abstract
A kind of vacuum electric-discharge device.Its ceramic insulating container is shaped to tubular by puddling, and the wall thickness that makes tube is when becoming roughly the same, the rivel that on the inside and outside wall of tube, has the wall thickness homogeneous, so that the interior outer face length of tube is longer than the interval of seal, and with the inwall support intermediate cap tube of the bottom of rivel.
Description
The present invention and vacuum circuit-breaker, vacuum lightning arrester, triggered vacuum gap equal vacuum electric discharge device are relevant, particularly relevant with the manufacture method and the structure of ceramic insulating container.
Figure 17 is the side cut away view of the vacuum switch tube of the prior art shown in for example special public clear 59-27050 communique.Among the figure, (81) are ceramic insulating containers, when it constitutes a vacuum tank part, have at electrode (85a), when (85b) disconnects, and high-tension circuit are had the function that insulate.(82) be arranged on banded protuberance on insulating vessel (81) inwall, it mechanically supports metal intermediate cap tube (83) and installed part (84), no matter when electrode disconnects or be closed, all makes intermediate cap tube (83) and two electrode insulations.(84a), (84b) be respectively with electrode (85a), (85b) idiostatic seal, the end (83a) that hermetic seals up insulating vessel (81) respectively is (83b).
Insulating vessel (81), be through the blending alumina powder in the past, the mould method is shaped as cylinder, cut then, high temperature sintering forms, and burns the last layer axle thereafter outside, is applying paste with MO, MN metalikon on the end, carry out sintering again, after this carry out operations such as sintering and make by plating layer of Ni again.
The following describes action, vacuum switch tube is by suitably soldering assembling and thermal exhaust above-mentioned parts to be carried out making after the vacuum seal, when being referred to as to regulate operation, applies high voltage between two electrodes then, to improve the vacuum insulation disintegration voltage.At this moment the voltage that applies is more than specified proof voltage (for example, the vacuum switch tube that 3.3KV uses is AC10KV, and the vacuum switch tube that 36KV uses the is AC70KV) height of vacuum switch tube.
Two interelectrode vacuum insulation disintegration voltages improve gradually, then, proceeding to regulate operation constantly producing under the ruined situation of vacuum insulation between electrode and intermediate cap tube, causing at seal (84a) finally and the external flashover of ceramic insulating container (81) takes place (84b).Since this external flashover, the breakdown sometimes destruction of part of (81a) of ceramic vessel, (81b) or (82).As making the breakdown destruction of ceramic vessel because of regulating operation, become waste product at this work-in-process, and can't regeneration, so the rate of finished products reduction.
In order to prevent the ceramic breakdown one-tenth waste product of vacuum switch tube, must take following means.1. because of must suppressing vacuum insulation between electrode and the intermediate cap tube by bad, vacuum gap between the two must increase, promptly increases the diameter of insulating vessel; 2. because of suppressing the external flashover between seal, must increase interval between the two, promptly increase the total length of insulating vessel; 3. prevent that in the periphery setting of seal electric field that external flashover is used from relaxing ring and regulating; 4. at insulating oil, SF
6Regulate in the gas etc.But these methods, 1 and 2 can cause the maximization of ceramic vessel and the sharp increase of production cost, and 3 and 4 make and regulate complicated operationization.These all methods all are the great barrier harms of producing economically on the vacuum switch.Therefore develop little shape, cheapness and in regulating operation, can not produce the ceramic insulating container that punctures destruction and become the task of top priority.
In addition, above-mentioned insulating vessel also should have following performance requirement.1. the abominable high temperature thermal shocking the when production process of ability soldering, exhaust etc. and cutting-off of short-circuit electric current; 2. edge flashing does not take place in the adjusting operation of carrying out in exhaust and after the exhaust reach the puncture destruction of container extremely; Though 3. because the cut-out repeatedly of electric current makes the insulating vessel inner face adhere to electrode substance, it its insulation property are corrupted to be lower than specified requirement of withstand voltage; 4. for the salinity in the environment for use and dust and make the stained of outer face, still can keep needed insulating requirements; 5. ability is accompanied by electrode opens and closes and produce mechanical shock and vibration etc.
Vacuum switch tube uses on high-tension line when reaching more than 20 years, and dust that internal cause environment for use contains during this and salinity atmosphere can make the outer face of insulating vessel stained, or covers electrode substance because of cutting off repeatedly of electric current makes interior the carrying out along face of insulating vessel.
Therefore, the withstand voltage properties that insulating vessel is possessed when making, the deterioration gradually with the increase of using year number finally can not be born specified voltage.Because the salt damage that typhoon, heavy snow etc. produce is moist or the unusual transient voltage because of being struck by lightning, taking place when circuit opens and closes, make insulating vessel generation external flashover or internal flashover, this becomes cause makes the flash coating of insulating vessel or near the generation of banded protuberance puncture destruction sometimes.This punctures breakoff phenomenon is the deadly defect of vacuum switch tube.
The ceramic insulating container of existing vacuum tube is because of having aforesaid structure, thereby has the shortcoming of the easy breakdown destruction of wall.Though existing pottery tube, therefore be can not get sufficient plus-pressure and is easy to generate pore at thicker banded protuberance because be dry formed so alumina powder jointed frictional force can make the mobile performance variation of powder by the extrusion forming of mould method.When regulating operation, produce the concentrated reason that causes puncturing destruction that becomes of unusual electric field at this pore place.
In addition, the external diameter of the seal (66a) of the existing vacuum switch tube of cause, the external diameter of (66b) and insulating vessel is roughly the same, so the partial discharge to the outer face easily takes place, in case the partial discharge of needle-like takes place from a side of seal, then this partial discharge circuit is short-circuited the outer face of linearity at once, and this is the reason that causes external flashover.
The present invention carries out for addressing the above problem.That the support sector that its purpose is to make the intermediate cap tube does not all have is pore, homogeneous, the pottery tube of thickness homogeneous the time, make it to be difficult for from seal generation partial discharge when regulating operation.Its second purpose is by the outer face at the pottery tube of thickness homogeneous the non-linear shapes part to be set, though when regulating operation for example from seal generation partial discharge, also can stop external flashover effectively.Its 3rd purpose be, by the method for all doing longlyer along the length of face than the interval between seal the length of outer face and vacuum side suppress insulating vessel the outer face and in along the surface leakage electric current of face.Its 4th purpose provide a kind of the operational phase ability when opening and closing mechanical shock and because of the inner face that electrode substance produced outside stained and that cause by the adhesion of salinity stained etc., and with the economic vacuum switch tube of the lightest insulating vessel formation of minimum size.
The objective of the invention is to realize in the following way, (1) ceramic insulating container used of the vacuum electric-discharge device relevant with the present invention is configured as tubular by puddling, and the wall thickness that makes tube makes the longer than the interval between seal along face length of tube when becoming roughly the same; (2) the high-tension vacuum electric-discharge device relevant with the present invention, its insulating vessel becomes the wall thickness homogeneous, has waveform rivel shape so that along face length longer at interval than seal the time with ceramic, supports the intermediate cap letter with the inwall of the bottom of waveform rivel; (3) vacuum electric-discharge device relevant with the present invention insulating vessel is had the roughly the same pottery tube of waveform rivel and wall thickness to constitute by inner face and outside when, interiorly grown than the interval L that is arranged on the pair of metal deposited metal on these pottery tube two ends along the long of face.
Insulating vessel of the present invention, the reason puddling is shaped, little, the good fluidity of alumina powder jointed frictional force.Therefore can obtain not having the homogeneous and the roughly the same pottery tube of wall thickness of local defect such as pore.
In addition, owing to be to adopt to be cast into wall thickness that forming process makes pottery tube uniformly, thus the outer face of tube only not, interior along face also can form than the length of the interval L between seal along face length I, therefore can reduce the surface leakage electric current between seal, suppress the generation of partial discharge.
The high pressure vacuum electric discharge device relevant with the present invention, because of have with the insulating vessel made of pottery wall thickness all even its along the face length waveform rivel longer than the interval between seal, so can suppress seal in the time of the face generation partial discharge of outer, even partial discharge for example takes place, the partial discharge circuit equals top from the waveform rivel towards foreign side, and does not arrive the bottom of the waveform rivel of supporting the intermediate cap tube.
The vacuum electric-discharge device relevant with the present invention, inner face and outside by insulating vessel are provided with the waveform rivel, inside and outside two along face can be longer along face length than the interval that is arranged on the pair of metal deposited metal on the pottery tube both ends, therefore can reduce surface leakage electric current between the pair of metal deposited metal, improve inside and outside the edge flashing voltage on two sides.In addition, roughly the same because of inside and outside waveform rivel is constituted wall thickness, so can make the pore-free defective, quality is even and the insulating vessel of heat shock resistance; When improving its insulation property,, make insulating vessel, thereby make vacuum electric-discharge device more miniaturization and lightweight with the size of minimum, minimum weight for the inner diameter of needed electrode diameter and insulating vessel.
Below in conjunction with accompanying drawing most preferred embodiment of the present invention is further described.
Brief description
Fig. 1 is the cutaway view of the expression embodiment of the invention 1 or 2,
Fig. 2 is the insulating vessel shape perspective view of the special little part of the present invention,
Fig. 3 is the part amplification profile of Fig. 1,
Fig. 4 is the vacuum electric-discharge device cutaway view of the expression embodiment of the invention 3,
Fig. 5 is the vacuum electric-discharge device cutaway view of the expression embodiment of the invention 4,
Fig. 6 is the vacuum electric-discharge device cutaway view of the expression embodiment of the invention 5,
Fig. 7 is the vacuum electric-discharge device cutaway view of the expression embodiment of the invention 6,
Fig. 8 is the bottom of Fig. 7 waveform rivel and the enlarged drawing at top,
Fig. 9 is the graph of a relation of minimum profile curvature radius, the outer wall rivel degree of depth and the angle theta of Fig. 8 waveform rivel,
Figure 10 is the cutaway view of the expression embodiment of the invention 7,
Figure 11 is the cutaway view of the expression embodiment of the invention 8,
Figure 12 is the horizontal front view that separates of waveform rivel,
Figure 13 is the front view of spiral waveform rivel,
Figure 14 to Figure 16 is the cutaway view of several variants of expression embodiment 1,
Figure 17 is the cutaway view of expression prior art.
Below present embodiment will be described with reference to the accompanying drawings.Among Fig. 1, (1) is the aluminium oxide ceramics insulating vessel that is shaped with the slurry casting method, and the wall thickness of its wall is all roughly even in all places of total length.Through littler than the internal diameter of the end (1a) of insulating vessel, (1b), the top of waveform rivel (1d) is bigger than the external diameter of end in the bottom of waveform rivel (1c) minimum.Metal intermediate cap tube (3), installed part (4) are mechanically supported by (1c) portion, and are reached (movably) electrode (5b) electric insulation mutually with (fixing) electrode (5a).(6a), (6b) be seal, be sealed in respectively on (1a), (1b), and idiostatic with electrode (5a), (5b) respectively.
Insulating vessel in the present embodiment is a mud of at first making alumina powder, and again with behind its castable, drying is burnt till in the high temperature furnace of about 1650 ℃ of atmosphere.The average thickness of this insulating vessel is 4.5mm, and with respect to the top of the outside diameter of insulating vessel, dark (1e) of bottom is 11-18mm.Can obtain outer face length 1 according to this structure is 1.3 times for the ratio of the long L in the interval between the seal at insulating vessel two ends.Carry out metallising by the MoMn method on the both ends.
Through required operation, make 20 7.2KV vacuum switch tubes, after the exhaust, row is regulated and is operated when applying the voltage of AC50KV.Regulate in the operation, though the vacuum insulation that takes place between electrode and the intermediate cap tube destroys by other observation clearly, the puncture that insulating vessel does not all take place destroys.In addition by other result of the tests, when the surface leakage electric current of distinguishing insulating vessel reduced significantly, the external flashover voltage ratio between seal improved 1.18-1.2 doubly in the past.
In addition, as the aluminium oxide (AI of slurry casting material system
2O
3) in addition material for example MgO, MnO
2, TiO
2, ZrO
2During for main material, carry out the sealing intensity instability of metallising by the MoMn method, the against vacuum electric discharge device is short-life.
The present invention destroys even for example produce vacuum insulation between electrode and intermediate cap tube in adjusting, also is difficult to take place the puncture destruction of insulating vessel in the support sector of intermediate cap tube.The characteristics that also have the external flashover voltage increases of seal in addition.Their mechanism can be considered as follows.
At first, because be not with mould dry pressing method, but be shaped by the slurry casting of alumina powder, the mutual friction of powder is little, and the flowability of powder increases.Therefore, when the material of the each several part of insulating vessel homogenized, wall thickness is homogenization also.High temperature with regard to 1650 ℃ burns till product, village's material characteristic to the each several part (1a) of its insulating vessel, (1b), (1c), (1d), be that density, fracture resistence force, the remaining ratio of pore etc. compare discussion, its homogenieity of product that the result draws the shaping of slurry casting forming process is good.
Secondly, present embodiment, because of the external flashover voltage of insulating vessel is brought up to former 1.18-1.2 doubly, and before along face length 1 being 1.3 times, so external flashover voltage is for having along face length 1
Relation.The relational expression of this formula and insulator is approximate.Because the external flashover voltage ratio had improved in the past, so can infer in the present embodiment, the exterior section discharge does not take place in regulating operation.But,, can think that also present embodiment is difficult for taking place the puncture destruction of insulating vessel even for example partial discharge has taken place from seal.Its reason is that the partial discharge circuit is the opposing party from a direction of seal to be a straight line, rather than from the top (1d) of waveform rivel towards internal diameter direction.Therefore, the partial discharge circuit can not arrive the bottom of the waveform rivel of supporting the intermediate cap tube.Its result has prevented the wall breakdown destruction on intermediate cap tube support sector next door.
Can recognize in the present embodiment, because of vacuum inside along face length be before 1.3 times, so the electrical endurance after the use of vacuum switch tube begins can be improved significantly.That is, because the electrode metal devaporation that open and close to produce, makes 3 times before being improved to of the inner life-span that produces the switching number of times of insulation till destroyed along face in the insulating vessel inwall.
In embodiment 1, narrated and on the aluminium oxide ceramics tube, had a plurality of waveform rivels, and support the vacuum switch tube of intermediate cap tube with the bottom of rivel, but, they can also be shown in Figure 14,15,16 like that, it is a plurality of that the pleat number that they can constitute the waveform rivel is not limited to, in addition, not the intermediate cap tube, but the vacuum switch tube of single armed cover tube.
Among Figure 14, the support sector of intermediate cap tube (1c) is to the recessed shape of internal side diameter, though its formation is similar to Figure 17, owing to be the pottery tube that slurry casting is shaped, so have homogeneous and the uniform characteristics of wall thickness.Though insulating vessel does not almost have increase along face length and external flashover voltage, it destroys the effect that improves significantly for the puncture of regulating insulating vessel in the operation certainly.
Figure 15 is the profile with vacuum switch tube of single armed metal cap tube (7), before being increased to along face length 1.1 times, the external diameter of seal (6b) before being below 1/2nd, its result has improved external flashover voltage.
Figure 16 is identical with Figure 15, is the side sectional view with vacuum switch tube of single armed cover tube (7), adopts the slurry casting method to make the maximum outside diameter of insulating vessel bigger than end (1a) external diameter (1b), is original 1.1 times along face length.Vacuum switch tube shown in Figure 16, its external flashover voltage and electrical endurance are improved.
In addition, though above said embodiment be that cylinder-shaped ceramic is an example all with insulating vessel, they also can be as shown in Figure 2, it is circular that the otch section of tubular pottery is not limited to, and can be oval, arbitrary shapes such as octangle, hexagon, quadrangle.Especially ellipse and rectangle etc. have the advantages that effectively to utilize insulating space when being used for the vacuum switch tube of 3 phase vacuum cutters.
Present embodiment describes with reference to Fig. 1 and Fig. 3.The structure of present embodiment is roughly the same with embodiment 1 as shown in Figure 1, and its manufacture method is also identical.
Fig. 3 is that amplification view cuts open in the office of Fig. 1.Among the figure, θ is the angle with the face of the face of the parallel axes of insulating vessel (1) and waveform rivel, is 120 degree.
Because the external diameter at the top (1d) of waveform rivel is bigger than the external diameter of end (1a), (1b), has shield effectiveness, can stop the partial discharge that takes place to the outer face from the seal sealing.
More than be that diagonal angle θ is that 120 examples of spending are illustrated, angle θ can also be 90 degree.
The internal diameter of bottom 1c can be littler than end (1a) internal diameter (1b) all in addition.
Fig. 4 is the high pressure vacuum electric discharge device signal longitudinal sectional view of present embodiment, and angle θ is 90 degree.
The structure of Fig. 4 is 1.4 along face length 1 with the ratio of long L at interval, because improved the effect that the inhibition surface current (6B) flows out from seal (6A) and suppressed the effect that seal discharges to the outer face portion, the result improved the effect that prevents the breakdown destruction of insulating vessel (1).
Fig. 5 is the high pressure vacuum electric discharge device longitudinal sectional view of the expression embodiment of the invention 4, is that the rated voltage that is used in a plurality of intermediate cap tubes is the vacuum switch tube of 84KV.
Among Fig. 5, (7A), (7B) be the 2nd intermediate cap tube of pair of metal, be arranged on the periphery of two electrodes (5A), (5B) coaxially, and it is long at interval long less than the interval of two electrodes (5A), (5B), and by bottom (1c) support of insulating vessel.
The 2nd intermediate cap tube (7A), (7B) available suitable method, for example marmem is made, and is inserted into the middle back of insulating vessel (1) by heating, is mounted to as shown in the figure.
Fig. 6 is the high pressure vacuum electric discharge device longitudinal sectional view of the expression embodiment of the invention 5, is to be used in the vacuum switch tube that specified pressure is 120KV.
The wall thickness of wall uniformity roughly on whole length.
(3a), (3b) is formed in the both ends (1a) of insulating vessel (1), the flash coating on (1b), (6a), (6b) be the seal of soldering on flash coating (3a), (3b), by sealing part (6a), (6b) being sealed to vacuum tight in the insulating vessel.(15) be arranged on the corrugated stainless steel tubing of the inner face central portion of seal (6b); (16) be the over cap that is contained in bellows (15) upper end; (17a), (17b) is the electrode bar that runs through seal (6a) and bellows (15); (5a), (5b) be subtend be arranged on (17b) electrode of top ends of electrode bar (17a), electrode (5b) constitutes can pass through electrode bar (17b) and corrugated tube (15) contacts, breaks away from freely with electrode (5a).(9) be arranged in the insulating vessel (1), surround the metal intermediate cap tube of electrode (5a), (5b), the rivel portion that this intermediate cap tube (3) is seized the internal face of insulating vessel (1) on both sides by the arms by metalwork (4) that is located at outside, an end and bulge (9a) to the outside installs.In this case, the inside overhang of rivel portion of the internal face of being seized on both sides by the arms is bigger than the rivel portion of other internal faces.
Present embodiment, insulating vessel (1) are aluminium oxide to be made slurry casting be shaped, and dry back high temperature in 1650 ℃ atmosphere burns till.The thickest of this insulating vessel (1) for example is 4.7mm, the minimum profile curvature radius r of the waveform rivel that the bottom of outer wall (1c) produces for example is 5mm, dark (e) with respect to the bottom (1c) of top (1d) is 12-18mm, and the angle theta of the face of the parallel axes of the face of the line part of waveform rivel and insulating vessel (1) is 60 degree.
Since the waveform rivel (2) of this structure, the pair of metal deposited metal (3a) of the end of insulating vessel (1), the long L=95mm in interval between (3b), interior along face length l
2And outer face length l
1All be l
2=l
1=125mm is along face length multiplication factor α=l
2/ L=l
1/ L=1.32.
Through required operation, make 20 7.2KV vacuum switch tubes, regulate operation behind the after-applied AC50KV voltage of exhaust.In regulating operation, any puncture does not all take place insulating vessel destroys.Thereby learn flash coating (3a) and (3b) between external flashover voltage before bringing up to more than 1.2 times.In addition, because the value of the external flashover voltage of the salinity that carried out of equivalent mist method when stained, compare during with the original long L=95mm in interval and bring up to 1.2 times.
Moreover, by cutting off electric current repeatedly, though electrode substance adhere to gradually in along on the face, and compared in the past, particularly the degradation phenomena of anti-pulse voltage does not almost take place, before the life-span of the failure of current number of times in taking place till the edge flashing can be improved to 3 times.
Inside and outside mask has the roughly ceramic uniformly tube of the wall thickness of waveform rivel (2), the material behavior of the each several part of the line part of the both ends of its insulating vessel (1), top, bottom rivel is a homogeneous, the error of density, fracture resistence force etc. is little, to compare gas hole defect few with the pottery tube of producing with existing mould method, and homogenieity is good.
Secondly, do not have in the existing insulating vessel of waveform rivel in interior outside as have the intermediate cap tube of metal in a vacuum, compare when not having, can produce the low phenomenon of outside edge flashing voltage of atmospheric side, i.e. the backplate effect.
But, present embodiment, external flashover voltage V is for outer face length l
1Have
Relation, this formula is consistent with the relational expression of insulator.Because can ignore the backplate effect, even between flash coating (3a), (3b), produce external flashover, present embodiment, the discharge path of external flashover is the route through (3a)-(1d)-(1d)-(3b), and without the bottom (1c) of intermediate cap tube support sector, destroy so near intermediate cap tube support sector (1c), be difficult for taking place the puncture of insulating vessel (1).
By the existing vacuum switch tube that does not have the insulating vessel of waveform rivel to constitute in interior outside, interior as at insulating vessel along enclosing electrode substance on the face, compared with the reduction of the voltage of anti-AC, the more significantly reduction of anti-pulse voltage.
Cutting off repeatedly of electric current makes the interior of insulating vessel adhere to electrode substance gradually along face though present embodiment also can't be avoided, even it also can cause the low of anti-pulse voltage hardly like this.
In along being stained with electrode substance on the face the low reason of anti-pulse voltage can be thought because big to interior vacuum gap along face from the top ends of intermediate cap tube.Therefore, produced the comparable advantage that shortened significantly in the past of length of intermediate cap tube.
In the present embodiment, though the minimum profile curvature radius r with the waveform rivel is 5mm, the rivel degree of depth (e) of outer wall is 12-18mm, the angle theta of the face of the face of the line part of rivel and insulating vessel axis parallel is that the example of 60 degree describes, but the shape of waveform rivel, not as limit, as long as in the scope of the performance condition that the insulating vessel described in the technical background should possess on can satisfy, make adaptation close small-sized, light-weighted shape can.
Fig. 8 is the bottom (1c) of characteristic waveform rivel of the present invention and the enlarged drawing of top (1d).Though this figure expression is that the least radius r of wall thickness t and the waveform rivel of insulating vessel is an example about equally, words as t＞r, foregoing performance condition 1 and 5 just can't satisfy, because thermal shock and mechanical shock etc. can produce the danger in crack, so must satisfy the relation of t≤r.
The scope that the angle theta of the face of the face of the line part of waveform rivel shown in Figure 8 and the axis parallel of insulating vessel is wished in 45 °≤θ≤90 °.θ＜45 °, defined not too large with α=l/L or l/L with interior outer face length l, l along face length multiplication constant α with the ratio of the long L in the interval of flash coating, thereby can not ignore above-mentioned backplate effect.In addition during θ＞90 °, the slurry casting relatively difficulty that is shaped, aforesaid performance condition and 5 is not being met.
The degree of depth e of the waveform rivel of the outer wall of insulating vessel (1) wishes it is more than 1.5 times of minimum rate radius r of waveform rivel.This be because e＜during 1.5r, θ
2Even value suitably can not ignore the backplate effect.
For making container wall thickness all roughly even, interior at last along face length l in total length
2With outer face length l
1Must improve 10% at least for making outer face flashover voltage about equally, must satisfy l
2≈ l
1The condition of 〉=1.2L.
Fig. 9 is the minimum profile curvature radius r of the described rivel of above-mentioned Fig. 8, the rivel degree of depth e of outer wall, inside and outside along face length l
2, l
1, the correlation figure of the angle theta of the face that the face of the line part of long at interval L of flash coating and waveform rivel is parallel with the axle of insulating vessel (l) etc.But the waveform rivel degree of depth e of outer wall is consistent with each rivel to be example.Among Fig. 9, the value of transverse axis wishes that more than 1.5, the value of the longitudinal axis is wished more than 1.2.
Embodiment 7
The vacuum switch tube of present embodiment is described with reference to Figure 10.Be formed with flash coating (3a), (3b) on the end face of insulating vessel (1), (6b) soldering of tabular ground is on flash coating (3a), (3b) for seal (6a), and metal intermediate cap tube (3) is mounted at one end the seal (6a) with the form of single armed.
Embodiment 8
The vacuum switch tube of present embodiment is described with reference to Figure 11.The end sides of insulating vessel (1) is formed with flash coating (3a), (3b); Seal (6a), (6b) soldering this flash coating (3a) (3b) on; When metal intermediate cap tube (9) utilizes the waveform rivel to be installed in the inside of above-mentioned insulating vessel (1), pair of metal funnel-form intermediate cap tube (12a), (12b) utilize the waveform rivel to be installed in the insulating vessel (1), and the end of its minor diameter is positioned at intermediate cap tube (9).In embodiment 6, though waveform rivel (2) has the top and bottom of a plurality of separation as shown in Figure 12, it also can have only the end general inside and outside one, i.e. spirality as shown in Figure 13.
Though embodiment 6 to 8 is that example is illustrated with the vacuum switch tube, but the insulating vessel that has illustrated function, the performance important document that should possess, on the lightning-arrest pipe of vacuum, vacuum fuse, vacuum trigger equal vacuum electric discharge device, need too, and be applicable to them and can obtain the effect identical with embodiment.
Claims (15)
1, a kind of vacuum electric-discharge device, a pair of and the idiostatic seal of electrode is sealed on the end of ceramic insulating container, its invention is characterised in that above-mentioned ceramic insulating container is tubular, the tube interior all long along face length than the interval between above-mentioned seal along face and outer face.
2, vacuum electric-discharge device as claimed in claim 1, it is further characterized in that above-mentioned ceramic insulating container is main material with the aluminium oxide, is shaped with the slurry casting method.
3, high pressure vacuum electric discharge device as claimed in claim 1 or 2, it is further characterized in that the cut-out section shape of above-mentioned ceramic insulating container can be circle, ellipse, polygonal, square or rectangular.
4, vacuum electric-discharge device as claimed in claim 1, it is further characterized in that the external diameter of above-mentioned ceramic insulating container is bigger than the external diameter of above-mentioned seal.
5, vacuum electric-discharge device as claimed in claim 1 or 2, it is further characterized in that, above-mentioned insulating vessel has the waveform rivel, and makes it along face length longer than the interval between above-mentioned seal the time, supports the intermediate cap tube by the inwall of the bottom of above-mentioned waveform rivel.
6, vacuum electric-discharge device as claimed in claim 5, it is further characterized in that, supports that the minimum diameter of bottom of above-mentioned waveform rivel of above-mentioned intermediate cap tube is littler than the internal diameter of the end of above-mentioned insulating vessel.
7, vacuum electric-discharge device as claimed in claim 5, it advances little being characterised in that, and the external diameter at the top of above-mentioned waveform rivel is bigger than the external diameter of the end of above-mentioned insulating vessel.
8, vacuum electric-discharge device as claimed in claim 5, it is further characterized in that above-mentioned intermediate cap tube is provided with a plurality of.
9, vacuum electric-discharge device as claimed in claim 1 or 2, it is further characterized in that, the both ends of above-mentioned ceramic insulating container are formed with the pair of metal deposited metal, and when this ceramic insulating container is formed by the cylindrical body that has the waveform rivel on inner face and the outside, outer face length and interior all long than the interval of above-mentioned pair of metal deposited metal along face length.
10, as claim 1,2 or 5 described vacuum electric-discharge devices, it is further characterized in that, above-mentioned ceramic insulating container is roughly suitable cylindric of thickness.
11, vacuum electric-discharge device as claimed in claim 9, it is further characterized in that the minimum profile curvature radius (r) of the waveform rivel of above-mentioned insulating vessel is bigger than wall and maximum ga(u)ge (t).
12, vacuum electric-discharge device as claimed in claim 9, it is further characterized in that the angle theta of the face of the face of the line part of waveform rivel and the parallel axes of insulating vessel is in the scope of 45 degree≤θ≤90 degree.
13, vacuum electric-discharge device as claimed in claim 9, it is further characterized in that the degree of depth e of waveform rivel is more than 1.5 times of minimum profile curvature radius (r) of this waveform rivel.
14, vacuum electric-discharge device as claimed in claim 9, it is further characterized in that, and is interior along face length (l
2) and outer face length (l
1) the pass be l
2≈ l
1, and be l with respect to the interval of pair of metal deposited metal long (L)
2≈ l
1〉=1.2L.
15, vacuum electric-discharge device as claimed in claim 9, it is further characterized in that the waveform rivel of the inner face of insulating vessel and outer face is shape in the shape of a spiral.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP246570 | 1987-09-29 | ||
| JP62246570A JPS6489125A (en) | 1987-09-29 | 1987-09-29 | Ceramics insulating container for vacuum discharge device |
| JP246570/87 | 1987-09-29 | ||
| JP62262893A JPH01107429A (en) | 1987-10-20 | 1987-10-20 | High voltage vacuum discharge device |
| JP262893/87 | 1987-10-20 | ||
| JP262893 | 1987-10-20 | ||
| JP307697/87 | 1987-12-07 | ||
| JP30769787A JPH0719516B2 (en) | 1987-12-07 | 1987-12-07 | Vacuum discharge device |
| JP307697 | 1987-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032469A true CN1032469A (en) | 1989-04-19 |
| CN1016121B CN1016121B (en) | 1992-04-01 |
Family
ID=27333488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88106456A Expired CN1016121B (en) | 1987-09-29 | 1988-08-31 | Vacuum electric-discharge device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR910003656B1 (en) |
| CN (1) | CN1016121B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299838A (en) * | 2005-06-28 | 2015-01-21 | 施耐德电器工业公司 | Vacuum bulb for an electrical protection apparatus, such as a switch or a circuit breaker |
| CN108767839A (en) * | 2018-05-29 | 2018-11-06 | 华能国际电力股份有限公司 | Overvoltage protection device |
| CN109690892A (en) * | 2016-08-17 | 2019-04-26 | 通用电气公司 | Gap with the excitation of triple point electron emission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101456740B1 (en) * | 2011-03-31 | 2014-10-31 | 현대중공업 주식회사 | Bellows for gas insulated switchgear |
-
1988
- 1988-08-31 CN CN88106456A patent/CN1016121B/en not_active Expired
- 1988-09-22 KR KR1019880012252A patent/KR910003656B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299838A (en) * | 2005-06-28 | 2015-01-21 | 施耐德电器工业公司 | Vacuum bulb for an electrical protection apparatus, such as a switch or a circuit breaker |
| CN109690892A (en) * | 2016-08-17 | 2019-04-26 | 通用电气公司 | Gap with the excitation of triple point electron emission |
| CN108767839A (en) * | 2018-05-29 | 2018-11-06 | 华能国际电力股份有限公司 | Overvoltage protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR910003656B1 (en) | 1991-06-08 |
| KR890005790A (en) | 1989-05-17 |
| CN1016121B (en) | 1992-04-01 |
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