CN112635239B - Vacuum arc-extinguishing chamber and assembly method thereof - Google Patents
Vacuum arc-extinguishing chamber and assembly method thereof Download PDFInfo
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- CN112635239B CN112635239B CN202011386185.6A CN202011386185A CN112635239B CN 112635239 B CN112635239 B CN 112635239B CN 202011386185 A CN202011386185 A CN 202011386185A CN 112635239 B CN112635239 B CN 112635239B
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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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a vacuum arc-extinguishing chamber and a vacuum arc-extinguishing chamber assembly method, wherein the vacuum arc-extinguishing chamber comprises: an arc extinguishing chamber housing; the static contact structure comprises a static main contact and a static arc contact; the moving contact structure comprises a moving main contact and a moving arc contact; the static contact structure and/or the moving contact structure are/is a composite contact structure, the composite contact structure comprises a movable arc contact, a conductive main contact and a rear-mounted conductor, after the arc extinguishing chamber shell is welded, the rear-mounted conductor and the movable arc contact are assembled in an inserting manner, the rod part of the movable arc contact is inserted into the rear-mounted conductor and is connected with the conductive contact finger in a sliding conductive manner, the rear-mounted conductor and the conductive main contact are assembled together in a split manner, and the rear-mounted conductor is connected with the corresponding conductive main contact in a conductive manner. Because the electric conductor is correspondingly installed after the welding of the arc-extinguishing chamber shell is completed, the high-temperature influence of the arc-extinguishing chamber shell during the welding and the assembly can be reduced, the contact performance of the conductive contact finger in the electric conductor installed at the rear is ensured, the current passing capability is ensured, and the performance of the vacuum arc-extinguishing chamber is improved.
Description
Technical Field
The utility model belongs to the technical field of vacuum switches, and particularly relates to a vacuum arc-extinguishing chamber and a vacuum arc-extinguishing chamber assembly method.
Background
Along with the development of economy, the vacuum circuit breaker gradually replaces the sulfur hexafluoride circuit breaker with the characteristics of environmental friendliness, long service life, no maintenance and the like, and becomes a research hot spot at home and abroad. The difficulty with vacuum interrupters is how to conduct the rated current under normal conditions and to break the fault current under fault conditions.
The utility model discloses a vacuum arc extinguishing chamber in China patent with the publication number of CN2023076740U, which comprises a porcelain shell, wherein the upper end of the porcelain shell is fixedly connected with an upper end main contact through an upper end metal sealing ring, an upper arc contact is movably assembled in the upper end main contact along the up-down direction, an upper corrugated pipe is arranged between the upper arc contact and the upper end main contact to realize sealing, a watchband contact finger is arranged in a through hole of the upper end main contact, and the upper arc contact and the watchband contact finger are assembled in a sliding conductive manner so as to be connected with the upper end main contact in a conductive manner. Because the watchband contact finger is directly arranged between the upper end main contact and the upper arc contact, during assembly, the static contact structure can only be preassembled, then connected with the porcelain shell, and then welded with the porcelain shell, so that the assembly of the arc extinguishing chamber is completed. Because the porcelain shell needs high-temperature integral welding, the high temperature can cause the problem that the contact performance is reduced when a conductive contact point is pre-arranged in the porcelain shell, and the performance of the lead is affected.
Disclosure of Invention
The utility model aims to provide a vacuum arc-extinguishing chamber, which solves the technical problem that the contact performance of the conductive contact finger is easily affected by high welding temperature in the prior art in a mode of firstly installing the conductive contact finger between a main contact and a movable arc contact and then welding an arc-extinguishing chamber shell; meanwhile, the utility model also provides a vacuum arc-extinguishing chamber assembly method.
In order to achieve the above purpose, the technical scheme of the vacuum arc extinguishing chamber provided by the utility model is as follows: a vacuum interrupter, comprising:
an arc extinguishing chamber shell assembled by welding is internally provided with a fixed contact structure above and a moving contact structure below;
the static contact structure comprises a static main contact and a static arc contact which are connected in a conductive manner;
the movable contact structure comprises a movable main contact and a movable arc contact which are connected in a conductive manner;
when the switch is closed, the movable arc contact and the static arc contact are contacted firstly, and the movable main contact and the static main contact are contacted afterwards so as to realize normal through flow;
when the brake is separated, the moving main contact and the static main contact are separated firstly, and the moving arc contact and the static arc contact are separated later to realize normal arc extinction;
the fixed contact structure and/or the moving contact structure are/is a composite contact structure, an arc contact of the composite contact structure is a movable arc contact, a main contact of the composite contact structure is a conductive main contact, and the movable arc contact is movably assembled in the corresponding conductive main contact along the up-down direction;
the composite contact structure also comprises a sealing corrugated pipe, wherein the sealing corrugated pipe extends along the up-down direction, and the sealing corrugated pipe is sleeved outside the movable arc contact so as to apply elastic driving acting force to the movable arc contact and ensure the normal action of the movable arc contact in the switching-on and switching-off process of the vacuum arc extinguishing chamber;
the composite contact structure further comprises a post-loading conductor, the post-loading conductor is spliced and assembled with the movable arc contact after the arc extinguishing chamber shell is welded, the post-loading conductor is fixedly provided with a conductive contact finger, the movable arc contact comprises a rod part, the rod part is inserted into the post-loading conductor and is in sliding conductive connection with the conductive contact finger, the post-loading conductor and the corresponding conductive main contact are fixedly assembled together in a split manner, and the post-loading conductor is in conductive connection with the corresponding conductive main contact.
The beneficial effects are that: in the vacuum arc-extinguishing chamber provided by the utility model, the static contact structure and/or the moving contact structure are/is of a composite contact structure, and the moving arc contact is movably assembled in the conductive main contact along the up-down direction.
As a further improvement, the rear-mounted conductor is a conductive sleeve, and the conductive contact finger is fixedly arranged on the inner wall surface of the conductive sleeve.
The beneficial effects are that: the conductive sleeve is convenient to realize post-assembly, conductive contact fingers are convenient to arrange, and the structure is simple.
As a further improvement, a guide groove is further formed in the inner wall surface of the conductive sleeve, a guide ring is fixedly assembled in the guide groove, and the guide ring is assembled with the rod part of the movable arc contact in a guide sliding manner.
The beneficial effects are that: the guide ring is arranged in the conductive sleeve, so that the guide of the corresponding rod part of the movable arc contact can be realized, and the guide moving performance of the movable arc contact is improved.
When the static contact structure is the composite contact structure, the static arc contact in the static contact structure is a movable arc contact, the static main contact is a conductive main contact, the arc extinguishing chamber shell comprises a porcelain shell and an upper sealing cover, the upper end of the static main contact is fixedly connected with a static end supporting conductor, the static end supporting conductor is fixedly arranged on the upper sealing cover, the static end supporting conductor is sleeve-shaped, two ends of the static end supporting conductor are open, a rod part gap of the static arc contact is inserted into the static end supporting conductor to form a static end assembly gap, the static contact structure further comprises a static end inserting conductor serving as a rear-mounted conductor, the static end inserting conductor is correspondingly inserted into the static end assembly gap and is in conductive connection with the static end supporting conductor, and the static end inserting conductor is fixedly connected with the static end supporting conductor or fixedly connected with the upper sealing cover.
The beneficial effects are that: the static end inserting conductor is used as a rear-mounted conductor of the static contact structure, and is inserted into the static end assembly gap, so that the conductive connection of the static end inserting conductor and the static end supporting conductor is conveniently realized, the whole assembly structure can be optimized, the assembly space is fully utilized, and the miniaturization development of the arc extinguishing chamber is facilitated.
As a further improvement, a static end stop flange is arranged on the periphery of the static end insertion conductor, and the static end stop flange is in stop fit with the static end support conductor or the upper sealing cover and is connected with the static end support conductor or the upper sealing cover in a welding way.
The beneficial effects are that: the fixed assembly of the static end inserted conductor is conveniently realized by utilizing the static end stop flange.
As a further improvement, the sealing corrugated pipe in the static contact structure is a static end corrugated pipe, the static end corrugated pipe is positioned in the static end assembly gap, the upper end of the static end corrugated pipe is fixedly connected with the rod part of the static arc contact, and the lower end of the static end corrugated pipe is fixedly connected with the static main contact.
The beneficial effects are that: the static end corrugated pipe is positioned in the static end assembly gap, so that the assembly mode is convenient to optimize.
When the moving contact structure is the composite contact structure, a moving arc contact in the moving contact structure is a moving arc contact, the moving main contact is a conductive main contact, an arc extinguishing chamber shell comprises a porcelain shell and a lower sealing cover, the lower end of the moving main contact is fixedly connected with a moving conductive rod, the moving conductive rod and the lower sealing cover are assembled in a sealing sliding mode, the moving conductive rod is sleeve-shaped, two ends of the moving conductive rod are open, a moving arc contact gap is inserted into the moving conductive rod to form a moving end assembly gap, the moving contact structure further comprises a moving end insertion conductor serving as a rear-mounted conductor, the moving end insertion conductor is correspondingly inserted into the moving end assembly gap and is in conductive connection with the moving conductive rod, and the moving end insertion conductor is fixedly connected with the moving conductive rod.
The beneficial effects are that: the movable end inserting conductor is used as a rear-mounted conductor of the movable contact structure, and is inserted into the movable end assembly gap, so that the conductive connection between the movable end inserting conductor and the movable conducting rod is conveniently realized, the whole assembly structure can be optimized, the assembly space is fully utilized, and the miniaturized development of the arc extinguishing chamber is facilitated.
As a further improvement, the sealing corrugated pipe in the moving contact structure is a moving end corrugated pipe, the moving end corrugated pipe is positioned in the moving end assembly gap, the upper end of the moving end corrugated pipe is fixedly connected with the moving main contact or the moving conductive rod, and the lower end of the moving end corrugated pipe is fixedly connected with the rod part of the moving arc contact.
The beneficial effects are that: the movable end corrugated pipe is positioned in the movable end assembly gap, so that the assembly mode is convenient to optimize.
As a further improvement, a movable end stop flange is arranged on the periphery of the movable end insertion conductor, and the movable end stop flange is in stop fit with the movable conducting rod and is connected with the movable conducting rod in a welding mode.
The beneficial effects are that: the movable end stop flange is utilized to conveniently realize the fixed assembly of the movable end inserted conductor.
The technical scheme of the vacuum arc-extinguishing chamber assembly method provided by the utility model is as follows: the method for assembling the vacuum arc extinguishing chamber comprises the steps of pre-loading a fixed main contact and a fixed arc contact in a fixed contact structure and a movable main contact and a movable arc contact in a movable contact structure into an arc extinguishing chamber shell, welding and assembling the arc extinguishing chamber shell, and for the fixed contact structure and/or the movable contact structure serving as a composite contact structure, installing a post-installed conductor of the composite contact structure after welding and assembling the arc extinguishing chamber shell, conducting and inserting the post-installed conductor and the movable arc contact of the composite contact structure, and fixedly assembling the post-installed conductor and the conductive main contact of the composite contact structure together in a split manner, wherein the post-installed conductor is in conductive connection with the corresponding conductive main contact.
The beneficial effects are that: according to the assembly method of the vacuum arc extinguishing chamber, the traditional mode of finally welding and assembling the arc extinguishing chamber shell is changed, welding and assembling of the arc extinguishing chamber shell are finished firstly, then the post-mounted conductor of the composite contact structure is in conductive insertion fit with the rod part of the corresponding movable arc contact, and the post-mounted conductor is fixedly assembled with the corresponding conductive main contact, so that the influence of welding high temperature on the conductive contact finger in the post-mounted conductor can be effectively avoided, and the current passing performance of the conductive contact finger can be effectively improved.
For the subject to be protected in this patent, each preferred technical scheme under the same subject can be adopted independently, and under the condition of being capable of combining, two or more preferred technical schemes under the same subject can also be combined arbitrarily, and the combined technical scheme is not described in detail here, and is contained in the description of this patent.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum interrupter provided by the utility model;
fig. 2 is a schematic structural diagram of the vacuum interrupter shown in fig. 1 in a closed state;
fig. 3 is an assembly schematic diagram of the vacuum interrupter of fig. 1 after the welding of the interrupter housing is completed and the post-load electrical conductor is installed.
The names of the corresponding components in the figures are:
1. a static end is inserted into the conductor; 2. a static end contact finger mounting groove; 3. static end conductive contact finger; 4. a stationary end guide groove; 5. an upper cover; 6. a stationary end support conductor; 7. static arc contacts; 71. an upper head; 72. an upper stem portion; 8. a stationary main contact; 81. a tapered outer peripheral surface; 9. a static end baffle ring; 10. a stationary end bellows; 11. a moving arc contact; 111. a lower head; 112. a lower stem portion; 12. a contact shield; 14. a moving main contact; 141. a conical recess; 15. a movable conductive rod; 16. a lower bellows; 17. a lower cover; 18. the moving end is inserted into the conductor; 19. an intermediate housing; 20. a movable end guide groove; 21. a movable end contact finger mounting groove; 22. a movable end stop flange; 23. a stationary end stop flange; 24. a static end assembly gap; 25. a moving end assembly gap; 30. a moving end bellows; 31. a movable end baffle ring.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It is noted that relational terms such as first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises a depicted element.
In the description of the present utility model, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
In the description of the present utility model, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
The present utility model is described in further detail below with reference to examples.
Embodiment 1 of the vacuum interrupter provided by the utility model:
as shown in fig. 1 to 3, in the vacuum interrupter of this embodiment, whether the static contact structure or the moving contact structure is a composite contact structure, the arc contacts thereof are movably assembled in the main contacts, and are also respectively configured with a post-assembled conductor, the post-assembled conductor is assembled with the corresponding arc contacts in a plugging manner, conductive contact fingers are arranged in the post-assembled conductor and are used for sliding and conductive assembly with the corresponding arc contacts, during assembly, the static main contact 8 and the static arc contact 7 in the static contact structure and the moving main contact 14 in the moving contact structure can be preloaded into the housing of the interrupter, then the housing of the interrupter is assembled by welding, and for the static contact structure and the moving contact structure as the composite contact structure, the corresponding post-assembled conductor is assembled after the housing of the interrupter is welded, the post-assembled conductor is electrically connected with the moving arc contact of the composite contact structure, and the post-assembled conductor is fixedly assembled with the conductive main contact of the composite contact structure. Therefore, the conductive contact finger for realizing conductive connection is assembled behind the arc extinguishing chamber shell, so that the influence of welding high temperature on the conductive contact finger when the arc extinguishing chamber shell is welded at high temperature can be effectively avoided.
The structure of the vacuum arc-extinguishing chamber integrally comprises an arc-extinguishing chamber shell, and a fixed contact structure above and a moving contact structure below are correspondingly arranged in the arc-extinguishing chamber shell, wherein the moving contact structure can be driven by an operating mechanism to reciprocate up and down so as to realize the switching-on and switching-off operation of the vacuum arc-extinguishing chamber in cooperation with the fixed contact structure.
The arc extinguishing chamber shell comprises a middle shell 19, an upper sealing cover 5 and a lower sealing cover 17, wherein the middle shell 19 is generally assembled by welding at least two sections of porcelain shells, the upper sealing cover 5 is welded at the upper end of the middle shell 19, and the lower sealing cover 17 is welded at the lower end of the middle shell 19. During specific assembly, the welding connection of the corresponding end sealing cover and the corresponding porcelain shell section can be realized through the corresponding metal sealing ring.
The static contact structure is a composite contact structure and comprises a static main contact 8, a static arc contact 7, a static end supporting conductor 6 and a static end inserting conductor 1.
The static main contact 8 is used as a conductive main contact and is of a sleeve structure, an inner hole of the static main contact 8 is a stepped through hole, the step surface of the stepped through hole is downward, and the stepped through hole comprises an upper small-diameter hole section and a lower large-diameter hole section.
The upper end of the static main contact 8 is fixedly arranged on the upper sealing cover 5 through a static end supporting conductor 6, the static end supporting conductor 6 is welded with the upper sealing cover 5, the lower end of the static end supporting conductor 6 is welded with the static main contact 8, the static end supporting conductor 6 is sleeve-shaped, and two ends are open.
In fact, for convenient positioning assembly, the lower end of the static end supporting conductor 6 is in plug-in fit with the upper end of the static main contact 8, the upper end of the static main contact 8 is provided with a circular groove, the lower end of the static end supporting conductor 6 is provided with a cylindrical bulge, the cylindrical bulge and the circular groove are in fit-in plug-in connection, so that the static main contact 8 and the static end supporting conductor 6 are convenient to be in centering plug-in fit, and welding connection is convenient to be carried out on the lower end and the upper end of the static end supporting conductor.
The static arc contact 7 is used as a movable arc contact and is movably assembled in the static main contact 8 along the up-down direction. The static arc contact 7 is of a T-shaped structure as a whole and comprises an upper head 71 and an upper rod 72, the upper head 71 is used for conducting contact with a corresponding movable arc contact 11 to achieve arc extinguishing operation, the upper rod 72 is located above the upper head 71, the upper head 71 is located in a lower large-diameter hole section of the static main contact 8, the upper rod 72 penetrates through an upper small-diameter hole section of the static main contact 8 and into the static end supporting conductor 6, the upper rod 72 and the static end supporting conductor 6 are in clearance fit to form a static end assembly clearance 24, a static end corrugated pipe 10 is arranged in the static end assembly clearance 24, the static end corrugated pipe 10 is used as a sealing corrugated pipe of the static contact structure, the upper end of the static end corrugated pipe 10 is fixedly connected with the upper rod 72, the lower end of the static end corrugated pipe is fixedly connected with the static main contact 8, in fact, a static end baffle ring 9 is fixedly arranged on the upper rod 72, and the upper end of the static end corrugated pipe 10 is in welded connection with the static end baffle ring 9 to achieve sealing assembly.
For the static contact, the static end inserting conductor 1 is used as a post-mounting conductor, the static end inserting conductor 1 is of a conductive sleeve structure, two ends of the static end inserting conductor 1 are open, the static end inserting conductor 1 is used for being inserted and assembled in a static end assembling gap 24, the static end inserting conductor 1 is matched with the static end supporting conductor 6 in a conductive inserting mode, the upper rod 72 is correspondingly inserted into an inner hole of the static end inserting conductor 1, the inner wall surface of the static end inserting conductor 1 is provided with a static end contact finger mounting groove 2 and a static end guide groove 4, the static end contact finger mounting groove 2 is provided with a static end conductive contact finger 3, and particularly watchband contact fingers can be used.
For convenient fixed assembly, the outer periphery of the static end inserting conductor 1 is provided with a static end stop flange 23, and the static end stop flange 23 is matched with the upper end stop of the static end supporting conductor 6 and is welded with the static end supporting conductor 6.
After the arc extinguishing chamber shell is welded, the static end inserting conductor 1 is inserted into the static end assembling gap 24, the upper rod 72 of the static arc contact 7 is in sliding conductive fit with the static end inserting conductor 1, and the static end inserting conductor 1 is welded with the static end supporting conductor 6. Because the static end conductive contact finger 3 is arranged in the static end insertion conductor 1, the influence of high-temperature welding of the arc extinguishing chamber shell on the static end conductive contact finger 3 can be effectively avoided by matching with the assembly process of later loading.
The moving contact structure is also a composite contact structure and integrally comprises a moving main contact 14, a moving arc contact 11, a moving conductive rod 15 and a moving end inserting conductor 18.
The moving main contact 14 is used as a conductive main contact, and is of a sleeve structure, the moving arc contact 11 is used as a moving arc contact, the moving main contact 14 can be movably assembled in the moving main contact 14 along the up-down direction, the moving main contact 14 is used for being in conductive contact with the fixed main contact 8 to realize through flow, the moving arc contact 11 is used for being in conductive cooperation with the fixed arc contact 7 to realize arc extinguishing operation, the moving arc contact 11 protrudes out of the moving main contact 14 along the direction towards the fixed contact structure, the fixed arc contact 7 protrudes out of the fixed main contact 8 along the direction towards the moving contact structure, the moving arc contact 11 protrudes out of the moving main contact 14 along the direction towards the fixed contact structure, the moving main contact 14 contacts with the fixed arc contact 7 first, the moving main contact 14 contacts with the fixed main contact 8 to realize normal through flow when the vacuum arc extinguishing chamber is closed, and the moving main contact 14 separates from the fixed arc contact 8 first, and the moving arc contact 11 separates from the fixed arc contact 7 to realize normal when the vacuum arc extinguishing chamber is opened.
The upper end of the movable conducting rod 15 is welded with the lower end of the movable main contact 14, and the lower end of the movable conducting rod 15 is used for extending out of the arc extinguishing chamber shell to be in transmission connection with the insulating pull rod of the corresponding operating mechanism. The outer peripheral surface of the movable conducting rod 15 is in sliding sealing fit with the lower sealing cover 17. In order to realize effective sealing, a lower corrugated pipe 16 is sleeved outside the movable conducting rod 15, the upper end of the lower corrugated pipe 16 is welded with the movable main contact 14, and the lower end of the lower corrugated pipe is welded with a lower sealing cover 17. And, the lower bellows 16 applies a return elastic force to the moving main contact 14 to force the moving main contact 14 to move in the opening direction.
In fact, the top of the moving main contact 14 is correspondingly matched with the fixed main contact 8, the fixed main contact 8 is provided with a conical outer peripheral surface 81, the radial dimension of the conical outer peripheral surface 81 gradually decreases from top to bottom, the moving main contact 14 is provided with an upward conical concave part 141, the conical concave part 141 is provided with a conical inner peripheral surface, and when the arc extinguishing chamber is closed, the conical inner peripheral surface is matched with the conical outer peripheral surface 81 in a matched manner, so that normal through flow is realized. The tapered outer circumferential surface 81 and the tapered inner circumferential surface are both tapered surfaces, so that a good electric field effect is obtained.
The top end of the moving main contact 14 comprises a plurality of contact flaps, all of which are uniformly distributed along the circumferential direction at intervals, all of which are matched to form a conical concave part 141, and the inner side surfaces of all of which are matched to form a conical concave surface. The design of the slotting split can enable the movable main contact 14 to have certain elasticity, ensure contact pressure and ensure contact area. Moreover, the coaxiality of the closing centering of the movable contact and the fixed contact can be optimized. In order to improve the peripheral electric field effect of the moving main contact 14, a contact shielding cover 12 is sleeved outside the moving main contact 14.
In this embodiment, the moving arc contact 11 is integrally T-shaped and includes a lower head 111 and a lower rod 112, the lower head 111 is used for electrically contacting with the upper head 71 of the static arc contact 7, the lower rod 112 is assembled in the moving conductive rod 15 in a sliding manner along the up-down direction, the moving conductive rod 15 is of a sleeve structure with two open ends, the lower rod 112 of the moving arc contact 11 is inserted into the moving conductive rod 15 in a gap manner to form a moving end assembling gap 25, a moving end corrugated tube 30 is arranged in the moving end assembling gap 25, the moving end corrugated tube 30 is used as a sealing corrugated tube of the moving contact structure and is used for realizing effective sealing, the moving end corrugated tube 30 is sleeved outside the lower rod 112, the upper end of the moving end corrugated tube is welded with the moving main contact 14, the lower end of the moving end corrugated tube is fixedly connected with the lower rod 112, a moving end baffle ring 31 is arranged outside the lower rod 112 of the moving arc contact 11, and the lower end of the moving end corrugated tube 30 is welded with the moving end baffle ring 31 to realize sealing assembly. When the movable conducting rod 15 brings the movable main contact 14 to switch on or off, elastic acting force is applied to the movable arc contact 11 through the movable end corrugated pipe 30 so as to force the movable arc contact 11 to correspondingly move, and normal action of the movable arc contact 11 in the switching-on or switching-off process of the vacuum arc extinguishing chamber is ensured.
The moving end inserting conductor 18 is used as a rear-mounted conductor of a moving contact structure and is used for assembly after welding of an arc extinguishing chamber shell is completed, the moving end inserting conductor 18 is of a conductive sleeve structure, two ends are open, the moving end inserting conductor 18 is used for being inserted and assembled in a moving end assembly gap 25, the moving end inserting conductor 18 is matched with the moving conductive rod 15 in a conductive insertion mode, the lower rod 112 is correspondingly inserted into an inner hole of the moving end inserting conductor 18, a moving end contact finger mounting groove 21 and a moving end guide groove 20 are formed in the inner wall surface of the moving end inserting conductor 18, a moving end conductive contact finger is arranged in the moving end contact finger mounting groove 21, a watchband contact finger can be adopted for the moving end conductive contact finger, a moving end guide ring is fixedly arranged in the moving end guide groove 20, and when the moving end inserting conductor 18 and the lower rod 112 are inserted, the lower rod 112 is in guide sliding fit with the moving end guide ring and is in sliding conductive connection with the moving end conductive contact finger.
For convenient fixed assembly, a movable end stop flange 22 is arranged on the periphery of the movable end insertion conductor 18, and the movable end stop flange 22 is in stop fit with the movable conductive rod 15 and is in welded connection with the movable conductive rod 15.
The movable end supporting conductor is used as a post-mounting conductor and is electrically and fixedly connected with the movable conducting rod 15, after the arc extinguishing chamber shell is welded, the movable end inserting conductor 18 is inserted into the movable end assembling gap 25, the lower rod part 112 of the movable arc contact 11 is in sliding conductive fit with the movable end inserting conductor 18, and the movable end inserting conductor 18 is welded with the movable conducting rod 15. Because the movable end conductive contact finger is arranged in the movable end insertion conductor 18, and the process of later assembly is added, the influence of high-temperature welding of the arc extinguishing chamber shell on the movable end conductive contact finger is effectively avoided.
During assembly, the static arc contact 7 is sleeved on the static main contact 8, the static end corrugated pipe 10 is sleeved on the upper rod portion 72 of the static arc contact 7, the static end baffle ring 9 is assembled on the upper rod portion 72 in a welding mode, the upper end of the static end corrugated pipe 10 is connected with the static end baffle ring 9 in a welding mode, and the lower end of the static end corrugated pipe is connected with the static main contact 8 in a welding mode. And then, welding and assembling the upper sealing cover 5, the porcelain shell section corresponding to the upper part, the static end supporting conductor 6 and the static main contact 8 together to finish partial preassembly.
The moving arc contact 11 is sleeved on the moving main contact 14, the moving end corrugated pipe 30 is sleeved on the lower rod portion 112 of the moving arc contact 11, the moving end baffle ring 31 is welded and assembled on the lower rod portion 112, the upper end of the moving end corrugated pipe 30 is welded and connected with the moving main contact 14, and the lower end of the moving end corrugated pipe is welded and connected with the moving end baffle ring 31. The upper end of the movable conducting rod 15 is welded with the lower end of the movable main contact 14, the movable conducting rod 15 is sheathed with a lower corrugated pipe 16, the movable conducting rod 15 passes through a lower sealing cover 17 in a sealing way, the upper end of the lower corrugated pipe 16 is welded with the lower end of the movable main contact 14, and the lower end is welded with the lower sealing cover 17. And welding and assembling the lower sealing cover 17 and the corresponding lower porcelain shell section together to finish partial preassembly.
And coaxially welding and assembling the preassembled parts to complete the assembly of the arc extinguishing chamber shell.
As shown in fig. 3, the stationary-end insert conductor 1 is inserted into the stationary-end fitting gap 24, and the stationary-end insert conductor 1 and the stationary-end support conductor 6 are welded together. The moving end insertion conductor 18 is inserted into the moving end fitting gap 25, and the moving end insertion conductor 18 and the moving conductive rod 15 are welded and connected to complete the arc extinguishing chamber fitting.
When the movable arc contact is used, as shown in fig. 2, during closing, the movable conducting rod 15 and the movable end inserting conductor 18 drive the movable main contact 14 to ascend, the lower corrugated pipe 16 stretches, meanwhile, the movable conducting rod 15 drives the movable arc contact 11 to ascend through the movable end corrugated pipe 30, the movable end corrugated pipe 30 stretches, the movable arc contact 11 protrudes out of the movable main contact 14 to be arranged, so that the movable arc contact 11 and the static arc contact 7 are contacted before the movable main contact 14 and the static main contact 8, and the movable conducting rod 15 continues to ascend until the static main contact 8 and the movable main contact 14 are matched in an anastomotic manner, and closing operation is completed. In the contact process of the movable arc contact 11 and the static arc contact 7, the movable arc contact 11 and the static arc contact 7 respectively retreat, and the movable end corrugated pipe 30 and the static end corrugated pipe 10 respectively deform in a compression mode.
When the brake is separated, as shown in fig. 1, the movable conducting rod 15 drives the movable main contact 14 to move downwards, the lower corrugated pipe 16 compresses, the movable main contact 14 and the fixed main contact 8 are separated firstly, at this time, under the action of the movable end corrugated pipe 30 and the fixed end corrugated pipe 10, the fixed arc contact 7 and the movable arc contact 11 are still in a contact state so as to realize contact arc striking, and the movable conducting rod 15 continues to move downwards until the movable arc contact 11 and the fixed arc contact 7 are separated for arc striking and arc extinguishing, so that brake separation operation is realized.
In order to improve the effect of the arc extinguishing chamber, the arc contact of the arc extinguishing chamber can adopt a coil type contact structure no matter in a static contact structure or a moving contact structure.
Example 2 of the vacuum interrupter provided by the utility model:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the fixed contact structure and the moving contact structure are both composite contact structures, each having a movable arc contact, and corresponding post-mounted conductors are respectively configured to reduce the high temperature effect caused by welding and assembling the arc extinguishing chamber housing. In this embodiment, only the static contact structure is made to be a composite contact structure, and the structure thereof may adopt the static contact structure in the vacuum interrupter embodiment 1 described above, which is not described herein in detail. At this time, the moving contact structure can be a moving contact structure in the existing vacuum arc-extinguishing chamber, and further description is omitted here.
Of course, in other embodiments, only the moving contact structure may be a composite contact structure, and the structure thereof may be the moving contact structure in the above-mentioned vacuum arc-extinguishing chamber embodiment 1, which is not described herein in detail, and at this time, the static contact structure may be the static contact structure in the existing vacuum arc-extinguishing chamber, which is not described herein in detail.
Example 3 of the vacuum interrupter provided by the utility model:
the difference between this embodiment and embodiment 1 is that in embodiment 1, no matter the moving contact structure or the static contact structure, the corresponding post-mounted conductor is a conductive sleeve, so that the conductive contact finger and the guide ring are conveniently arranged in the post-mounted conductor, and the post-mounted conductor is also conveniently inserted into the corresponding assembly gap. In this embodiment, the rear-mounted conductive member is a conductive end cap, and the conductive end cap has a central hole, in which a conductive contact finger and a guide ring are disposed, for conductive connection with the rod portion of the corresponding arcing contact.
In fact, for the static contact structure, the conductive end cover may be fixedly connected to the upper end of the static end supporting conductor by a screw or be fixedly connected to the upper cover, and it should be noted that when the conductive end cover is fixedly assembled with the upper cover, it is necessary to ensure the conductive connection between the conductive end cover and the static end supporting conductor. For the movable contact structure, the conductive end cover can be fixedly connected to the lower end of the movable conductive rod through a screw.
Example 4 of the vacuum interrupter provided by the utility model:
the difference between this embodiment and embodiment 1 is that, in embodiment 1, for facilitating the implementation of the fixed assembly, the static end stop flange of the static end insertion conductor is in stop fit with the static end support conductor and is welded connection, and the upper end of the static end bellows is connected with the upper rod portion of the static arc contact, and the lower end is fixedly connected with the static main contact. In this embodiment, the static end stop flange of the static end insert conductor may be in stop engagement with the upper cover and welded to the upper cover. At this time, care should be taken to ensure conductive connection of the stationary end insert conductor and the stationary end support conductor.
In addition, for the static end corrugated pipe, in the embodiment, the static end corrugated pipe can be placed in the large-diameter hole section of the static main contact, the upper end of the static end corrugated pipe is connected with the static main contact in a welding way, and the lower end of the static end corrugated pipe is connected with the upper head of the static arc contact in a welding way.
Example 5 of the vacuum interrupter provided by the utility model:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the upper end of the moving-end bellows is fixedly connected with the moving main contact, and the lower end is fixedly connected with the lower rod portion of the moving arcing contact. In this embodiment, the moving-end bellows 30 may be disposed between the moving main contact and the moving arcing contact, and at this time, the upper end of the moving-end bellows may be fixedly connected to the lower head of the moving arcing contact, and the lower end may be welded to the moving main contact.
The embodiment of the vacuum arc-extinguishing chamber assembly method provided by the utility model comprises the following steps:
when the vacuum arc extinguishing chamber is assembled, a static main contact and a static arc contact in a static contact structure and a moving main contact and a moving arc contact in a moving contact structure are preloaded into an arc extinguishing chamber shell, then the arc extinguishing chamber shell is assembled by welding, for the static contact structure and the moving contact structure which are used as a composite contact structure, a post-mounting conductor of the composite contact structure is installed after the arc extinguishing chamber shell is assembled by welding, the post-mounting conductor is electrically connected with the moving arc contact of the composite contact structure in a plug-in manner, and the post-mounting conductor is fixedly assembled with the conductive main contact of the composite contact structure in a split manner. For specific implementation, reference may be made to the assembly process in the above-mentioned vacuum interrupter embodiment 1, and details are not repeated here.
Of course, if only the fixed contact structure or the moving contact structure is a composite contact structure requiring configuration of the post-installed electrical conductor, the corresponding assembly method of the above-mentioned vacuum interrupter embodiment 1 is referred to when assembling the composite contact structure, and for the contact structure not employing configuration of the post-installed electrical conductor, the assembly method of the existing vacuum interrupter may be referred to for assembly, and will not be described herein.
It should be noted that the above description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A vacuum interrupter, comprising:
an arc extinguishing chamber shell assembled by welding is internally provided with a fixed contact structure above and a moving contact structure below;
the static contact structure comprises a static main contact (8) and a static arc contact (7) which are connected in a conductive manner;
the movable contact structure comprises a movable main contact (14) and a movable arc contact (11) which are connected in a conductive manner;
when the switch is closed, the moving arc contact (11) and the static arc contact (7) are contacted firstly, and the moving main contact (14) and the static main contact (8) are contacted afterwards so as to realize normal through flow;
when the brake is separated, the moving main contact (14) and the static main contact (8) are separated firstly, and the moving arc contact (11) and the static arc contact (7) are separated later to realize normal arc extinction;
the movable contact structure is characterized in that the fixed contact structure and/or the movable contact structure are/is a composite contact structure, an arc contact of the composite contact structure is a movable arc contact, a main contact of the composite contact structure is a conductive main contact, and the movable arc contact is movably assembled in the corresponding conductive main contact along the up-down direction;
the composite contact structure also comprises a sealing corrugated pipe, wherein the sealing corrugated pipe extends along the up-down direction, and the sealing corrugated pipe is sleeved outside the movable arc contact so as to apply elastic driving acting force to the movable arc contact and ensure the normal action of the movable arc contact in the switching-on and switching-off process of the vacuum arc extinguishing chamber;
the composite contact structure further comprises a post-loading conductor, after the arc extinguishing chamber shell is welded, the post-loading conductor is assembled with the movable arc contact in an inserting way, the conductive contact finger is fixedly arranged in the post-loading conductor, the movable arc contact comprises a rod part, the rod part is inserted into the post-loading conductor and is in sliding conductive connection with the conductive contact finger, the post-loading conductor and the corresponding conductive main contact are fixedly assembled together in a split way, and the post-loading conductor is in conductive connection with the corresponding conductive main contact;
the top of the moving main contact is correspondingly matched with the fixed main contact in an inserting way, the fixed main contact is provided with a conical outer peripheral surface, the radial size of the conical outer peripheral surface gradually decreases from top to bottom, the moving main contact is provided with an upward conical concave part, the conical concave part is provided with a conical inner peripheral surface, and the conical inner peripheral surface is matched with the conical outer peripheral surface in an inserting way when the arc extinguishing chamber is closed, so that normal through flow is realized; the top end of the moving main contact comprises a plurality of contact flaps, all the contact flaps are uniformly distributed along the circumferential direction at intervals, all the contact flaps are matched to form a conical concave part, and the inner side surfaces of all the contact flaps are matched to form a conical inner concave surface.
2. The vacuum interrupter of claim 1, wherein the rear-mounted conductor is a conductive sleeve, and the conductive contact fingers are fixedly arranged on an inner wall surface of the conductive sleeve.
3. The vacuum interrupter of claim 2, wherein the inner wall surface of the conductive sleeve is further provided with a guide groove, a guide ring is fixedly assembled in the guide groove, and the guide ring is slidingly assembled with the rod portion of the movable arc contact in a guide manner.
4. A vacuum interrupter according to claim 1, 2 or 3, wherein when the static contact structure is the composite contact structure, the static arc contact (7) in the static contact structure is a movable arc contact, the static main contact (8) is a conductive main contact, the interrupter housing comprises a porcelain shell and an upper sealing cover (5), the upper end of the static main contact (8) is fixedly connected with a static end supporting conductor (6), the static end supporting conductor (6) is fixedly arranged on the upper sealing cover (5), the static end supporting conductor (6) is sleeve-shaped, two ends of the static end supporting conductor (6) are open, a rod part gap of the static arc contact (7) is inserted into the static end supporting conductor (6) to form a static end assembling gap (24), the static contact structure further comprises a static end inserting conductor (1) serving as a rear-mounted conductor, the static end inserting conductor (1) is correspondingly inserted into the static end assembling gap (24) and is in conductive connection with the static end supporting conductor, and the static end inserting conductor (1) is fixedly connected with the static end supporting conductor or the upper sealing cover (5).
5. Vacuum interrupter according to claim 4, characterized in that the outer circumference of the dead-end insert conductor (1) is provided with a dead-end stop flange (23), the dead-end stop flange (23) being in stop fit with the dead-end support conductor (6) or the upper cover (5) and being welded with the dead-end support conductor (6) or the upper cover (5).
6. The vacuum interrupter according to claim 4, wherein the seal bellows in the static contact structure is a static end bellows (10), the static end bellows (10) is located in the static end assembly gap (24), the upper end of the static end bellows (10) is fixedly connected with the rod portion of the static arc contact (7), and the lower end is fixedly connected with the static main contact (8).
7. A vacuum interrupter according to claim 1, 2 or 3, wherein when the moving contact structure is the composite contact structure, the moving arc contact (11) in the moving contact structure is a moving arc contact, the moving main contact (14) is a conducting main contact, the interrupter housing comprises a porcelain shell and a lower sealing cover (17), the lower end of the moving main contact (14) is fixedly connected with a moving conducting rod (15), the moving conducting rod (15) is in a sliding assembly with the lower sealing cover (17), the moving conducting rod (15) is sleeve-shaped, two ends of the moving conducting rod (15) are open, the moving arc contact (11) is inserted into the moving conducting rod (15) in a clearance to form a moving end assembly clearance (25), the moving contact structure further comprises a moving end inserting conductor (18) serving as a rear-mounted conductor, the moving end inserting conductor (18) is correspondingly inserted into the moving end assembly clearance (25) and is in conducting connection with the moving conducting rod (15), and the moving end inserting conductor (18) is fixedly connected with the moving conducting rod (15).
8. The vacuum interrupter according to claim 7, wherein the seal bellows in the moving contact structure is a moving end bellows (30), the moving end bellows (30) is located in the moving end assembly gap (25), the upper end of the moving end bellows (30) is fixedly connected with the moving main contact (14) or the moving conducting rod (15), and the lower end is fixedly connected with the rod portion of the moving arc contact (11).
9. The vacuum interrupter according to claim 7, wherein a moving end stop flange (22) is provided on the outer periphery of the moving end insertion conductor (18), and the moving end stop flange (22) is in stop fit with the moving conductive rod (15) and is welded to the moving conductive rod (15).
10. The assembly method of the vacuum arc extinguishing chamber according to any one of claims 1 to 9, characterized in that the static main contact (8), the static arc contact (7) and the moving main contact (14) and the moving arc contact (11) in the static contact structure are preloaded into the arc extinguishing chamber shell, then the arc extinguishing chamber shell is assembled by welding, and for the static contact structure and/or the moving contact structure as the composite contact structure, after the arc extinguishing chamber shell is assembled by welding, the rear-mounted conductor of the composite contact structure is installed, the rear-mounted conductor is electrically connected with the moving arc contact of the composite contact structure by inserting, and the rear-mounted conductor is fixedly assembled with the conductive main contact of the composite contact structure in a split manner, and is electrically connected with the corresponding conductive main contact.
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| CN202011386185.6A CN112635239B (en) | 2020-12-01 | 2020-12-01 | Vacuum arc-extinguishing chamber and assembly method thereof |
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| CN202011386185.6A CN112635239B (en) | 2020-12-01 | 2020-12-01 | Vacuum arc-extinguishing chamber and assembly method thereof |
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| CN112635239B true CN112635239B (en) | 2023-05-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113223892A (en) * | 2021-05-25 | 2021-08-06 | 上海电器科学研究所（集团）有限公司 | Quick vacuum arc control device that does not have spring |
| CN115172093B (en) * | 2022-09-08 | 2022-11-11 | 宁波天安智能电网科技股份有限公司 | Electromagnetic ejection quick switch device |
| CN117810019B (en) * | 2024-02-28 | 2024-05-10 | 浙江昶科陶瓷新材料有限公司 | Ceramic vacuum circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114337A (en) * | 1991-10-23 | 1993-05-07 | Fuji Electric Co Ltd | Switch |
| CN202307674U (en) * | 2011-10-20 | 2012-07-04 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and vacuum breaker using same |
| CN108242357A (en) * | 2018-03-15 | 2018-07-03 | 南方电网科学研究院有限责任公司 | A kind of vacuum interrupter and dc circuit breaker of the quiet side buffering of band |
| CN108493037A (en) * | 2018-03-02 | 2018-09-04 | 西安交通大学 | A kind of double acting conducting rod and bi-bellow structure for vacuum arc-chutes and working method |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
-
2020
- 2020-12-01 CN CN202011386185.6A patent/CN112635239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114337A (en) * | 1991-10-23 | 1993-05-07 | Fuji Electric Co Ltd | Switch |
| CN202307674U (en) * | 2011-10-20 | 2012-07-04 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and vacuum breaker using same |
| CN108493037A (en) * | 2018-03-02 | 2018-09-04 | 西安交通大学 | A kind of double acting conducting rod and bi-bellow structure for vacuum arc-chutes and working method |
| CN108242357A (en) * | 2018-03-15 | 2018-07-03 | 南方电网科学研究院有限责任公司 | A kind of vacuum interrupter and dc circuit breaker of the quiet side buffering of band |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
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| CN112635239A (en) | 2021-04-09 |
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Inventor after: Zhao Xiaomin Inventor after: Li Xuxu Inventor after: Liu Qing Inventor after: Ma Chaoyang Inventor after: He Chuangwei Inventor after: Xue Congjun Inventor after: Li Xiaozhao Inventor after: Qi Dacui Inventor after: Wang Xiangke Inventor after: Lu Jing Inventor after: Li Zhiyong Inventor after: Wang Jun Inventor after: Zhou Yuegang Inventor after: Liu Wenkui Inventor after: Wang Mingfei Inventor after: Liu Xianbao Inventor after: Pang Sumin Inventor after: Li Xiao Inventor after: Zhang Hang Inventor after: Guan Xin Inventor after: Li Xinwei Inventor after: Zhong Jianying Inventor after: Bi Yinghua Inventor after: Yang Fan Inventor after: Lin Lin Inventor after: Zhao Fangshuai Inventor after: Sun Guanglei Inventor after: Li Yonglin Inventor before: Zhao Xiaomin Inventor before: Li Xuxu Inventor before: Liu Qing Inventor before: Ma Chaoyang Inventor before: He Chuangwei Inventor before: Xue Congjun Inventor before: Li Xiaozhao Inventor before: Qi Dacui Inventor before: Wang Xiangke Inventor before: Lu Jing Inventor before: Li Zhiyong Inventor before: Wang Jun Inventor before: Zhou Yuegang Inventor before: Liu Wenkui Inventor before: Wang Mingfei Inventor before: Liu Xianbao Inventor before: Pang Sumin Inventor before: Li Xiao Inventor before: Zhang Hang Inventor before: Guan Xin Inventor before: Li Xinwei Inventor before: Zhong Jianying Inventor before: Bi Yinghua Inventor before: Yang Fan Inventor before: Lin Lin Inventor before: Zhao Fangshuai Inventor before: Sun Guanglei Inventor before: Li Yonglin |
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