CN201877351U - Vacuum switching tube - Google Patents
Vacuum switching tube Download PDFInfo
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- CN201877351U CN201877351U CN2010206801867U CN201020680186U CN201877351U CN 201877351 U CN201877351 U CN 201877351U CN 2010206801867 U CN2010206801867 U CN 2010206801867U CN 201020680186 U CN201020680186 U CN 201020680186U CN 201877351 U CN201877351 U CN 201877351U
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- end cover
- switch tube
- vacuum switch
- vacuum
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Abstract
The utility model provides a vacuum switching tube which comprises an insulating casing, an upper end cover and a lower end cover. The upper end cover is arranged at the upper end of the insulating casing in a sealed way; the lower end cover is arranged at the lower end of the insulating casing in a sealed way; and the vacuum switching tube also comprises a fixed conductive base, a first movable conductive rod and a second movable conductive rod. The fixed conductive base comprises at least one connector; the fixed conductive base is fixedly arranged in the insulating casing; the connector penetrates through the insulating casing; and the fixed conductive base is respectively, electrically and fixedly connected with a first fixed contact and a second fixed contact. The first movable conductive rod penetrates through the upper end cover and a first corrugated pipe connected with the inner side of the upper end cover, and is electrically and fixedly connected with the first movable contact arranged in a first vacuum chamber. The second movable conductive rod penetrates through the lower end cover and a second corrugated pipe connected with the inner side of the lower end cover, and is electrically and fixedly connected with the second movable contact arranged in a second vacuum chamber. The vacuum switching tube can realize three-position vacuum switching tube, and improves the multifunctionality.
Description
Technical field
The utility model relates to the vacuum switch structure technology, relates in particular to a kind of vacuum switch tube.
Background technology
Vacuum switch is a kind of electric equipment that is used to control and protect electric power system; its closure by two electrode contacts (hereinafter to be referred as contact) of control in the vacuum switch tube, separate the pass of realizing circuital current and close and disconnect, thereby reach the purpose of control electric power system.Vacuum switch tube is the core parts of vacuum switch, and it is by being sealed in the contact control in the vacuum tank, the device of extinguish arcs.
The structure of at present common vacuum switch tube as shown in Figure 1, conducting rod 34, mobilizable conducting rod 35, fixed contact 36 and mobilizable contact 37 that the body of vacuum switch tube generally comprises insulation crust 31, be arranged on insulation crust two ends metal end 32 31 about, fix.Fixing conducting rod 34 is fixedlyed connected with fixed contact 36, mobilizable conducting rod 35 is fixedlyed connected with mobilizable contact 37, mobilizable contact 37 can move up and down under the drive of mobilizable conducting rod 35, with fixed contact 36 contact or separate, to realize the conducting or the shutoff of switch.Divide according to function, existing vacuum switch tube mainly is divided into circuit breaker vacuum switch tube, on-load switch vacuum switch tube, contactor vacuum switch tube, and function ratio is more single, only can play the effect of electric current of make-and-break load.As the load ground connection after the outage then also being needed to connect independent earthed switch.Like this, the volume of whole switch cabinet can be bigger, and cost is also than higher.
In addition, existing vacuum switch tube can only provide a vacuum fracture.And the proof voltage ability of vacuum fracture is not linear increasing along with the increase of fracture distance.When vacuum fracture distance was increased to a certain degree, its proof voltage ability increased and is not obvious, thereby has limited its use in the high voltage field.
The utility model content
The utility model provides a kind of vacuum switch tube, improves the multifunctionality of vacuum switch tube, or as the fail safe of specific function with vacuum switch tube.
The utility model provides a kind of vacuum switch tube, comprises insulation crust, upper end cover and bottom end cover, and described upper end cover sealing is arranged on the upper end of insulation crust, and described bottom end cover sealing is arranged on the lower end of described insulation crust, also comprises:
Fixing conductive seat, comprise at least one joint, described fixedly conductive seat is fixedly installed in the described insulation crust, the inner space of described insulation crust is separated into first vacuum chamber and second vacuum chamber, described joint passes described insulation crust, and be tightly connected with described insulation crust, described fixedly conductive seat respectively be arranged on described first vacuum chamber in first fixed contact electrically fixedly connected with second fixed contact in being arranged on described second vacuum chamber;
The first movable conducting rod, first bellows that the described first movable conducting rod passes described upper end cover and is connected with described upper end cover inboard, electrically fixedly connected with first movable contact in being arranged on described first vacuum chamber, described first movable contact can with the described first fixed contact closure;
The second movable conducting rod, second bellows that the described second movable conducting rod passes described bottom end cover and is connected with described bottom end cover inboard, electrically fixedly connected with second movable contact in being arranged on described second vacuum chamber, described second movable contact can with the described second fixed contact closure.
Aforesaid vacuum switch tube, wherein,
Described vacuum switch tube is the symmetrical structure with respect to described fixedly conductive seat.
Aforesaid vacuum switch tube also comprises:
Insulation shell radome group comprises two insulation shell radomes, and ring is located in described first vacuum chamber and described second vacuum chamber respectively, and described insulation shell radome is fixedlyed connected with described insulation crust inwall;
Bellows shield cover group comprises two bellows shield covers, is around in the outside of described first bellows and described second bellows respectively.
Aforesaid vacuum switch tube also comprises:
Moved end grading ring group comprises two moved end grading rings, fixedlys connected with the inboard of described upper end cover and bottom end cover respectively;
Quiet end grading ring group comprises two quiet end grading rings, fixedlys connected with the upper and lower surface of described fixedly conductive seat respectively.
Aforesaid vacuum switch tube also comprises:
The fairlead group comprises two fairleads, is embedded respectively between the described first movable conducting rod and described first bellows, and between the described second movable conducting rod and second bellows;
Fairlead retainer ring group comprises two fairlead retainer rings, is located in described fairlead respectively and stretches out the part in the described upper end cover outside and the part that described fairlead stretches out the described upper end cover outside.
Aforesaid vacuum switch tube, wherein,
The junction of described fixedly conductive seat and described insulation crust is provided with the sealing-in transition rings.
As shown from the above technical solution, the vacuum switch tube that the utility model provides, by two movable contacts respectively with two fixed contact cooperatings, combined floodgate, isolation and three functions of ground connection are integrated, improved the multifunctionality of vacuum switch tube.And this vacuum switch tube as circuit breaker with vacuum switch tube, on-load switch with vacuum switch tube or contactor during with vacuum switch tube because the isolation setting of two vacuum chambers; two vacuum fractures are isolated; the voltage endurance capability of vacuum switch tube improves, and has improved the reliability and the operating fail safe of the normal or abnormal current of vacuum switch tube disjunction.
Description of drawings
Fig. 1 is the vacuum switch tube structural representation of prior art;
A kind of vacuum switch tube structural representation that Fig. 2 provides for the utility model embodiment;
Fig. 3 is in the schematic diagram of isolation for the vacuum switch tube of Fig. 2;
Fig. 4 is in the schematic diagram of ground state for the vacuum switch tube of Fig. 2.
Reference numeral:
The 1-insulation crust; The 2-upper end cover; The 3-bottom end cover;
4-is conductive seat fixedly; The 5-first movable conducting rod; The 6-second movable conducting rod;
The 7-joint; 8-first fixed contact; 9-second fixed contact;
10-first bellows; 11-second bellows; 12-first movable contact;
13-second movable contact; 14-insulation shell radome; 15-bellows shield cover;
16-moved end grading ring; The quiet end grading ring of 17-; The 18-fairlead;
19-fairlead retainer ring; 20-sealing-in transition rings; The 31-insulation crust;
The 32-metal end; The conducting rod that 34-is fixing; The mobilizable conducting rod of 35-;
The 36-fixed contact; The mobilizable contact of 37-.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer,, the technical scheme among the utility model embodiment is clearly and completely described below in conjunction with the utility model embodiment.Need to prove that in accompanying drawing or specification, similar or components identical is all used identical Reference numeral.
A kind of vacuum switch tube structural representation that Fig. 2 provides for the utility model embodiment, as shown in Figure 2, this vacuum switch tube comprises insulation crust 1, upper end cover 2 and bottom end cover 3, and upper end cover 2 sealings are arranged on the upper end of insulation crust 1, and bottom end cover 3 sealings are arranged on the lower end of insulation crust 1.The material of insulation crust 1 is specifically as follows pottery or glass, has good insulation performance.This vacuum switch tube also comprises fixedly conductive seat 4, the first movable conducting rod 5 and the second movable conducting rod 6.Fixedly conductive seat 4 comprises at least one joint 7, fixedly conductive seat 4 is fixedly installed in the insulation crust 1, the inner space of insulation crust 1 is separated into first vacuum chamber and second vacuum chamber, joint 7 passes insulation crust 1, and be tightly connected with insulation crust 1, fixedly conductive seat 4 respectively be arranged on first vacuum chamber in first fixed contact 8 electrically fixedly connected with second fixed contact 9 in being arranged on second vacuum chamber.First bellowss 10 that the first movable conducting rod 5 passes upper end cover 2 and is connected with upper end cover 2 inboards, stretch in first vacuum chamber, electrically fixedly connected with first movable contact 12 in being arranged on first vacuum chamber, first movable contact 12 can with first fixed contact, 8 closures, promptly first movable contact 12 and first fixed contact 8 electrically connect.Second bellowss 11 that the second movable conducting rod 6 passes bottom end cover 3 and is connected with bottom end cover 3 inboards, stretch in second vacuum chamber, electrically fixedly connected with second movable contact 13 in being arranged on second vacuum chamber, second movable contact 13 can with second fixed contact, 9 closures, promptly second movable contact 13 and second fixed contact 9 are closed electrically connects.This vacuum switch tube has good sealing property, though the first movable conducting rod 5 and the second movable conducting rod 6 can move up and down, does not destroy the sealing of first vacuum chamber and second vacuum chamber.
In actual application, the first movable conducting rod 5 is connected with the wire inlet unit of power circuit, and fixedly the joint 7 of conductive seat 4 electrically connects second movable conducting rod 6 ground connection with load.Concrete, the first movable conducting rod 5 and the second movable conducting rod 6 can move up and down in the control of operating mechanism.This vacuum switch tube has three operating states: "on" position, isolation and ground state.As shown in Figure 2, first fixed contact 8 that is provided with on fixing first movable contact 12 and the fixing conductive seat 4 on the first movable conducting rod 5 contacts closure, and second fixed contact 9 that is provided with on fixing second movable contact 13 and the fixing conductive seat 4 on the second movable conducting rod 6 separates, be in "on" position for vacuum switch tube this moment, power circuit is an electric, the load operate as normal.Fig. 3 is in the schematic diagram of isolation for the vacuum switch tube of Fig. 2, as shown in Figure 3, first fixed contact 8 that is provided with on fixing first movable contact 12 and the fixing conductive seat 4 on the first movable conducting rod 5 separates, second fixed contact 9 that is provided with on fixing second movable contact 13 and the fixing conductive seat 4 on the second movable conducting rod 6 separates, power circuit and load disconnect, be not electric, this moment, vacuum switch tube was in isolation, had realized the isolation of power circuit and load.Fig. 4 is in the schematic diagram of ground state for the vacuum switch tube of Fig. 2, as shown in Figure 4, first fixed contact 8 that is provided with on fixing first movable contact 12 and the fixing conductive seat 4 on the first movable conducting rod 5 separates, second fixed contact 9 that is provided with on fixing second movable contact 13 and the fixing conductive seat 4 on the second movable conducting rod 6 contacts closure, this moment, vacuum switch tube was in ground state, realize load ground connection, can carry out repair and maintenance load.
This vacuum switch tube also can be used as circuit breaker with vacuum switch tube, on-load switch with vacuum switch tube or contactor vacuum switch tube, be connected in the power circuit by the first movable conducting rod 5 and the second movable conducting rod 6, the first movable conducting rod 5 and the second movable conducting rod 6 are closed with fixing conductive seat 4 contacts simultaneously or separate, and realize the conducting or the shutoff of circuit.Owing to form a vacuum fracture between first movable contact 12 and first fixed contact 8, form another vacuum fracture between second movable contact 13 and second fixed contact 9, two vacuum fractures are in first vacuum chamber and second vacuum chamber of mutual isolation respectively, thereby increase the ability that vacuum switch tube bears voltage, overvoltage is higher when helping solving load of vacuum switch switching capacitance or inductive load, and the problem that vacuum switch tube punctures easily, the fail safe that has improved vacuum switch tube.
The vacuum switch tube that present embodiment provides, setting by two movable contacts, the vacuum switch tube that plays the vacuum switch tube of break-make load effect or the buffer action that electrifies is combined with the vacuum switch tube that plays the grounding function effect, form an overall structure, with combined floodgate, isolation and three kinds of function Trinity of ground connection, improved the multifunctionality of vacuum switch tube.And this vacuum switch tube is during as the vacuum switch tube of simple function, setting by two vacuum chambers, realized the isolation of two vacuum fractures forming by two groups of activities, fixed contacts, the vacuum fracture that two vacuum fractures can be used as series connection is realized high withstand voltage, the fail safe that has improved vacuum switch tube.
In the present embodiment, vacuum switch tube is specifically as follows with respect to the fixing symmetrical structure of conductive seat 4, is convenient to industry and makes and promote.
As shown in Figure 2, in the present embodiment, this vacuum switch tube can also comprise insulation shell radome group and bellows shield cover group.Insulation shell radome group comprises two insulation shell radomes 14, and ring is located in first vacuum chamber and second vacuum chamber respectively, and insulation shell radome 14 is fixedlyed connected with insulation crust 1 inwall.Bellows shield cover group comprises two bellows shield covers 15, is around in the outside of first bellows 10 and second bellows 11 respectively.Concrete, the two ends of insulation shell radome 14 can be inside crimping, fixedly connected with the inwall of insulation shell in the middle part of insulation shell radome 14.Space encloses second movable contact 13 and second fixed contact 9 that space encloses first movable contact 12 that insulation shell radome 14 in first vacuum chamber forms and the insulation shell radome in first fixed contact, 8, the second vacuum chambers 14 form.Radome can prevent that contact from producing a large amount of metal vapors and droplets in the arcing process, pollute the inwall of shell, in order to avoid cause the vacuum degree of insulation crust 1 inner vacuum chamber to reduce or the generation flashover, and radome can absorb a part of arc energy, cool off the electric arc product, help improving medium recovery speed between contact, guarantee the capacity that cut-offs of vacuum switch tube, improved the stability of vacuum switch tube.
In the present embodiment, this vacuum switch tube can also comprise moved end grading ring group and quiet end grading ring group.Moved end grading ring group comprises two moved end grading rings 16, fixedlys connected with the inboard of upper end cover 2 and bottom end cover 3 respectively.Quiet end grading ring group comprises two quiet end grading rings 17, fixedlys connected with the fixing upper and lower surface of conductive seat 4 respectively.Concrete, moved end grading ring 16 and quiet end grading ring 17 homogeneous ends are used for fixing the inside crimping of the other end.By the setting of moved end grading ring 16 and quiet end grading ring 17, further improved the insulating properties of vacuum switch tube.
In the present embodiment, this vacuum switch tube can also comprise fairlead group and fairlead retainer ring group.The fairlead group comprises two fairleads 18, is embedded respectively between the first movable conducting rod 5 and first bellows 10, and between the second movable conducting rod 6 and second bellows 11.Fairlead retainer ring group comprises two fairlead retainer rings 19, is located in fairlead 18 respectively and stretches out the part in upper end cover 2 outsides and the part that fairlead 18 stretches out upper end cover 2 outsides.The material of concrete fairlead 18 can be polytetrafluoroethylene, certain guiding function is played in the motion that is set to movable conducting rod of fairlead 18, and improved the activity-oriented bar in motion process with the sealing of end cap, by the setting of fairlead retainer ring 19, improved the steadiness of fairlead 18.
In the present embodiment, fixedly conductive seat 4 is provided with sealing-in transition rings 20 with the junction of insulation crust 1, and sealing-in transition rings 20 materials are metal, preferably can be stainless steel or oxygenless copper material.By the setting of sealing-in transition rings 20, the fixedly steadiness that is connected and the sealing of conductive seat 4 and insulation crust 1 have been improved.
The vacuum switch tube that the utility model provides, first movable contact 12 that is used for being connected with power circuit, and concrete can being provided with according to the structure of contact terminal of circuit breaker of the structure of first fixed contact 8, promptly can be applicable to the occasion of big electric current, to realize the function of circuit breaker.This vacuum switch tube also can be provided with by the structure of contact terminal of on-load switch with vacuum switch tube, is applicable to the occasion of closing the branch normal current, to realize the function of on-load switch.This vacuum switch tube is applied to vacuum switch, also need to realize the motion of two movable conducting rods by operating mechanism, specifically can control respectively two movable conducting rods respectively by two cover operating mechanisms, also can be by the control of a cover operating mechanism realization to two movable conducting rods.Concrete control procedure can for, operating mechanism has two operating sides and a control end.Two operating sides are connected with the second movable conducting rod 6 with the first movable conducting rod 5 respectively, and control end is controlled two operating sides simultaneously and moved in the same way.The initial condition of supposing vacuum switch tube is a "on" position, the first movable conducting rod 5 moves upward under the control of an operating side of operating mechanism, so that first movable contact 12 separates with first fixed contact 8, and this moment, the second movable conducting rod 6 also moved upward under the control of another operating side of operating mechanism, but second movable contact 13 and second fixed contact 9 still are released state, and this moment, vacuum switch tube was just finished the switching from the "on" position to the isolation.Equally, vacuum switch tube also can be finished the switching from the isolation to the ground state under the control of operating mechanism.Therefore can under the prerequisite that does not increase cost,, realize the multifunctional vacuum switch of three stations by the control of an operating mechanism realization to vacuum switch tube.
The vacuum switch tube that the utility model provides by the setting of two movable contacts, with combined floodgate, isolation and three kinds of function Trinity of ground connection, has improved the multifunctionality of vacuum switch tube.And this vacuum switch tube by the setting of two vacuum chambers, has been realized the isolation of two vacuum fractures during as the vacuum switch tube of simple function, and it is high withstand voltage that two vacuum fractures are realized as the vacuum fracture of series connection, the fail safe that has improved vacuum switch tube.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (6)
1. a vacuum switch tube comprises insulation crust, upper end cover and bottom end cover, and described upper end cover sealing is arranged on the upper end of insulation crust, and described bottom end cover sealing is arranged on the lower end of described insulation crust, it is characterized in that, also comprises:
Fixing conductive seat, comprise at least one joint, described fixedly conductive seat is fixedly installed in the described insulation crust, the inner space of described insulation crust is separated into first vacuum chamber and second vacuum chamber, described joint passes described insulation crust, and be tightly connected with described insulation crust, described fixedly conductive seat respectively be arranged on described first vacuum chamber in first fixed contact electrically fixedly connected with second fixed contact in being arranged on described second vacuum chamber;
The first movable conducting rod, first bellows that the described first movable conducting rod passes described upper end cover and is connected with described upper end cover inboard, electrically fixedly connected with first movable contact in being arranged on described first vacuum chamber, described first movable contact can with the described first fixed contact closure;
The second movable conducting rod, second bellows that the described second movable conducting rod passes described bottom end cover and is connected with described bottom end cover inboard, electrically fixedly connected with second movable contact in being arranged on described second vacuum chamber, described second movable contact can with the described second fixed contact closure.
2. vacuum switch tube according to claim 1 is characterized in that:
Described vacuum switch tube is the symmetrical structure with respect to described fixedly conductive seat.
3. vacuum switch tube according to claim 1 and 2 is characterized in that, also comprises:
Insulation shell radome group comprises two insulation shell radomes, and ring is located in described first vacuum chamber and described second vacuum chamber respectively, and described insulation shell radome is fixedlyed connected with described insulation crust inwall;
Bellows shield cover group comprises two bellows shield covers, is around in the outside of described first bellows and described second bellows respectively.
4. vacuum switch tube according to claim 1 and 2 is characterized in that, also comprises:
Moved end grading ring group comprises two moved end grading rings, fixedlys connected with the inboard of described upper end cover and bottom end cover respectively;
Quiet end grading ring group comprises two quiet end grading rings, fixedlys connected with the upper and lower surface of described fixedly conductive seat respectively.
5. vacuum switch tube according to claim 1 and 2 is characterized in that, also comprises:
The fairlead group comprises two fairleads, is embedded respectively between the described first movable conducting rod and described first bellows, and between the described second movable conducting rod and second bellows;
Fairlead retainer ring group comprises two fairlead retainer rings, is located in described fairlead respectively and stretches out the part in the described upper end cover outside and the part that described fairlead stretches out the described upper end cover outside.
6. vacuum switch tube according to claim 1 and 2 is characterized in that:
The junction of described fixedly conductive seat and described insulation crust is provided with the sealing-in transition rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206801867U CN201877351U (en) | 2010-12-15 | 2010-12-15 | Vacuum switching tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206801867U CN201877351U (en) | 2010-12-15 | 2010-12-15 | Vacuum switching tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877351U true CN201877351U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206801867U Expired - Fee Related CN201877351U (en) | 2010-12-15 | 2010-12-15 | Vacuum switching tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877351U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044375A (en) * | 2010-12-15 | 2011-05-04 | 北京京东方真空电器有限责任公司 | Vacuum switch tube |
| CN102290284A (en) * | 2011-08-04 | 2011-12-21 | 江苏维爱斯电器有限公司 | Novel vacuum switch tube |
| CN102354632A (en) * | 2011-10-20 | 2012-02-15 | 北京华东森源电气有限责任公司 | Vacuum interrupter and vacuum circuit breaker using same |
| CN103035441A (en) * | 2012-12-17 | 2013-04-10 | 大连理工大学 | Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber |
| CN103050328A (en) * | 2012-12-31 | 2013-04-17 | 北京双杰电气股份有限公司 | Solid insulating grounded fixation and encapsulation structure |
| CN103311046A (en) * | 2013-06-09 | 2013-09-18 | 中国西电电气股份有限公司 | Isolation/grounding vacuum arc extinguishing tube |
-
2010
- 2010-12-15 CN CN2010206801867U patent/CN201877351U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044375A (en) * | 2010-12-15 | 2011-05-04 | 北京京东方真空电器有限责任公司 | Vacuum switch tube |
| CN102290284A (en) * | 2011-08-04 | 2011-12-21 | 江苏维爱斯电器有限公司 | Novel vacuum switch tube |
| CN102354632A (en) * | 2011-10-20 | 2012-02-15 | 北京华东森源电气有限责任公司 | Vacuum interrupter and vacuum circuit breaker using same |
| CN103035441A (en) * | 2012-12-17 | 2013-04-10 | 大连理工大学 | Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber |
| CN103050328A (en) * | 2012-12-31 | 2013-04-17 | 北京双杰电气股份有限公司 | Solid insulating grounded fixation and encapsulation structure |
| CN103311046A (en) * | 2013-06-09 | 2013-09-18 | 中国西电电气股份有限公司 | Isolation/grounding vacuum arc extinguishing tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20191215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |