CN113571376B - Double-action arc extinguishing chamber - Google Patents
Double-action arc extinguishing chamber Download PDFInfo
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- CN113571376B CN113571376B CN202110693639.2A CN202110693639A CN113571376B CN 113571376 B CN113571376 B CN 113571376B CN 202110693639 A CN202110693639 A CN 202110693639A CN 113571376 B CN113571376 B CN 113571376B
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- 230000003068 static effect Effects 0.000 claims abstract description 66
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000872 buffer Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 16
- 239000010720 hydraulic oil Substances 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000002955 isolation Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
- H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
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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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
Landscapes
- Circuit Breakers (AREA)
Abstract
The application relates to a double-acting arc extinguishing chamber. The double-acting type arc extinguishing chamber comprises a double-acting hydraulic cylinder and a movable end assembly, wherein the movable end assembly comprises a gas pressing chamber for forming the gas pressing type arc extinguishing chamber or an expansion chamber for forming the self-acting type arc extinguishing chamber; the double-acting hydraulic cylinder comprises a cylinder body, and an inner cavity and an outer cavity are arranged on the cylinder body; the inner cavity and the outer cavity are respectively provided with an inner piston and an outer piston, the inner piston and the outer piston both comprise a stopper body and a rod body, and the rod body comprises a first rod body and a second rod body with the same diameter; one of the cylinder body, the inner piston and the outer piston is fixed at the static end assembly, and the other two are respectively connected with the dynamic end assembly and the static arc contact in a transmission way; the two axial ends of the double-acting hydraulic cylinder are respectively provided with a throttling channel, and the throttling channels are used for communicating the corresponding ends of the inner cavity and the outer cavity, so that the inner piston is linked with the outer plug rod body and buffers the movable end assembly. The double-acting structure can meet double acting of the compressed air type arc extinguishing chamber or the self-energy type arc extinguishing chamber in a high-voltage class and strong impact working condition.
Description
Technical Field
The application relates to a double-acting arc extinguishing chamber.
Background
The arc extinguishing chamber is a core part of the high-voltage switch breaker, and has decisive influence on the breaking performance, reliability, operation work, economy and the like of the breaker. At present, single-action and double-action arc-extinguishing chamber structures are commonly used at home and abroad, and a single-action arc-extinguishing chamber moving end is driven by a driving mechanism to move so as to finish the opening and closing process; the double-acting arc-extinguishing chamber not only moves the movable end, but also part of parts of the fixed end of the arc-extinguishing chamber can move. The double-acting type arc extinguishing chamber has the advantages that the movement speed of the moving arc extinguishing chamber can be improved, the fracture dynamic electric field distribution is optimized, the operation work of the circuit breaker is reduced, the reliability and stability of the product are improved, and the product cost is reduced through the relative movement mode of the moving end and the moving end. Therefore, the double-acting arc extinguishing chamber is widely applied to engineering in the field of high-voltage switches.
The existing double-acting structure at home and abroad generally adopts a mechanical structure to connect the movable end and the static end of the arc extinguishing chamber, the mechanical structure is driven by the movable end, and the mechanical structure drives the static end to realize bidirectional movement. There are two common double-acting structures. Firstly, adopt the double acting construction of shift fork, this kind of structure is in order to realize moving the matching of quiet end velocity of motion, and the part is many, the structure is complicated, has the jamming risk, and the action is unstable. Secondly, the double-acting structure of the long connecting rod is adopted, the structure is simple, but the problem of vibration deformation of the long connecting rod in movement is obvious, and the long connecting rod is not beneficial to being applied to products with higher speed and stronger impact.
In particular, for the structure of the pneumatic arc-extinguishing chamber, the pneumatic arc-extinguishing chamber is a mature arc-extinguishing chamber structure, but the structure of the traditional pneumatic arc-extinguishing chamber generally adopts a single-acting structure, and the reason is that the pneumatic arc-extinguishing chamber is generally applied to ultra-high voltage and ultra-high voltage grades, and for ultra-high voltage and ultra-high voltage power grids, the rated voltage grade of products is higher, the rated breaking current is larger, the arc-extinguishing chamber is required to have larger air blowing capacity and higher breaking speed, in order to meet the requirement of breaking capacity, only the opening and closing speed is improved, the improvement of the speed inevitably leads to the increase of operation work, and the increase of the operation work can generate a series of problems such as cost improvement, vibration increase, stability reduction and the like. In addition, in the opening and closing movement of the air-compressing arc extinguish chamber, because the speed is high, the overshoot vibration of parts is obvious, not only is the redundancy of operation work caused, but also the redundancy of mechanical design strength is brought.
In addition, the self-energy arc-extinguishing chamber is also a mature arc-extinguishing chamber structure, and the expansion chamber can realize gas expansion in the arc-extinguishing process to play a role in arc blowing. However, the self-energy arc-extinguishing chamber has a structure similar to that of the gas-compression arc-extinguishing chamber, and has strong impact during the action, and the problem of obvious overshoot vibration is also caused.
Disclosure of Invention
The application aims to provide a double-acting type arc extinguishing chamber, which can realize double acting of a gas-compressing type arc extinguishing chamber or a self-energy type arc extinguishing chamber and solve the problem that the gas-compressing type arc extinguishing chamber or the self-energy type arc extinguishing chamber has obvious overshoot vibration.
The application adopts the following technical scheme:
a dual-type arc chute comprising:
the static end assembly comprises a static arc contact, and the static arc contact is arranged in a guiding way along the front-back direction;
the movable end assembly is used for moving back and forth under the drive of the operating mechanism to realize switching on and off, and comprises a gas pressing chamber for forming a gas pressing type arc extinguishing chamber or an expansion chamber for forming a self-energy arc extinguishing chamber;
further comprises:
the double-acting hydraulic cylinder comprises a cylinder body, wherein an inner cavity and an outer cavity are formed in the cylinder body:
the inner cavity is a cylindrical cavity, an inner piston is arranged in the inner cavity, the inner piston comprises an inner stopper body, the inner stopper body is arranged in the inner cavity in a guiding way, a first inner stopper body and a second inner stopper body are respectively arranged on two axial sides of the inner stopper body, the diameters of the first inner stopper body and the second inner stopper body are equal, and the first inner stopper body and the second inner stopper body respectively extend out of corresponding ends of the inner cavity;
the outer piston comprises an outer stopper body, the outer stopper body is assembled in the outer chamber in a guiding way, the two axial sides of the outer stopper body are respectively provided with a first outer stopper body and a second outer stopper body, the diameters of the first outer stopper body and the second outer stopper body are equal, and the outer stopper bodies extend out of the corresponding ends of the outer chamber respectively;
one of the cylinder body, the inner piston and the outer piston is fixed at the static end assembly, and the other two are respectively connected with the movable end assembly and the static arc contact in a transmission way;
the two axial ends of the double-acting hydraulic cylinder are respectively provided with a throttling channel, and the throttling channels are used for communicating the corresponding ends of the inner cavity and the outer cavity, so that the moving end assembly is linked with the static arc contact, and the movement of the moving end assembly is buffered.
The beneficial effects are that: by adopting the technical scheme, through setting up double acting hydraulic cylinder to fix one of them in quiet end subassembly department of cylinder body, interior piston and outer piston, the other two respectively with moving end subassembly and quiet arc contact transmission are connected, can realize the linkage of outer piston and interior piston through the throttle passageway, and then realize the linkage of moving end subassembly and quiet arc contact, thereby reduce the required operating work of explosion chamber, guarantee the divide-shut brake speed, compared with the fork structure double acting construction and the long connecting rod double acting construction among the prior art, spare part is few, difficult clamping stagnation, can not produce the vibration deformation, simultaneously, hydraulic oil can produce a mild resistance through the throttle passageway when the explosion chamber divide-shut brake, play the cushioning effect to the overshoot of explosion chamber, reduced operation impact strength, thereby can satisfy the quick on-off demand of air compressing type explosion chamber or self-energy type explosion chamber better.
As a preferred technical scheme: the outer chamber is an annular chamber and is circumferentially arranged on the radial outer side of the inner chamber.
The beneficial effects are that: by adopting the technical scheme, the structure is simple, and the radial size of the cylinder body is reduced.
As a preferred technical scheme: an isolation cylinder body is arranged in the cylinder body and used for isolating the outer cavity; the isolating cylinder body is provided with a radial through hole, and the cavity communication channel is formed by the radial through hole.
The beneficial effects are that: by adopting the technical scheme, the structure is simple, the manufacturing is convenient, the number of parts is reduced, and the reliability is good.
As a preferred technical scheme: the double-acting arc extinguishing chamber also comprises a static end shielding cylinder which is fixed on a cylinder body, an inner piston or an outer piston which are connected with the static arc contact.
The beneficial effects are that: by adopting the technical scheme, the moving process of the static end shielding cylinder and the static arc contact is matched with the closing process, so that the function of optimizing a fracture electric field can be realized, the shielding performance is good, and the opening performance is improved.
As a preferred technical scheme: and one end of the static end shielding cylinder, which is close to the movable end assembly, corresponds to the foremost end of the static arc contact.
The beneficial effects are that: by adopting the technical scheme, a good shielding effect can be ensured.
As a preferred technical scheme: the static end shielding cylinder is fixed at one end, far away from the movable end assembly, of the cylinder body, the inner piston or the outer piston, which is connected with the static arc contact.
The beneficial effects are that: by adopting the technical scheme, the static end shielding cylinder is convenient to connect and manufacture.
As a preferred technical scheme: and more than two outer stopper rods are arranged on any side of the outer stopper body in the axial direction, and the outer stopper rods on each side are uniformly distributed along the circumferential direction.
The beneficial effects are that: by adopting the technical scheme, the stress uniformity is guaranteed, and the reliability is further improved.
As a preferred technical scheme: the movable end assembly comprises a large nozzle, a connecting cylinder is arranged at the front end of the large nozzle, and the connecting cylinder and the static arc contact are coaxially arranged;
one end of the connecting cylinder is fixed on the large nozzle, the other end of the connecting cylinder is provided with a sealing plate, and the static arc contact penetrates through the sealing plate; the outer peripheral surface of the connecting cylinder is provided with an air flow hole for restricting the flow direction and the flow rate of the air flow;
the movable end component is in transmission connection with the corresponding cylinder body, the inner piston or the outer piston of the double-acting hydraulic cylinder through a connecting cylinder.
The beneficial effects are that: the connecting cylinder has two functions, firstly, the rigidity of the connecting structure is improved, because the high-voltage switch breaker has high moving speed and strong impact, and the rigidity is not high Yi Wanqu when the long rod bears strong impact and is deformed when being connected with the hydraulic cylinder by the rod piece, the length of the rod piece can be reduced by using one connecting cylinder, and the rigidity of a transmission system is improved; secondly, restricting the air flow, the air flow coming out from the big nozzle can blow to the direction of the hydraulic cylinder, the air flow hole is opened on the connecting cylinder, the position and the size of the air flow hole can be set differently according to the strength of the opening and closing air flow of the arc extinguishing chamber, thus a space is formed, the flow direction and the flow rate of the air flow are restricted, the opening and closing capacity of the arc extinguishing chamber is directly related to the air flow parameters in the nozzle, and therefore, the restriction on the air flow is very important.
As a preferred technical scheme: the cylinder body of the double-acting hydraulic cylinder is fixed, and the outer piston and the inner piston are respectively connected with the movable end assembly and the static arc contact.
The beneficial effects are that: by adopting the technical scheme, the cylinder body is convenient to fix, and the outer piston and the inner piston are also convenient to be connected with the movable end assembly and the static arc contact respectively.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of a double-acting arc extinguishing chamber in a closed state;
FIG. 2 is a schematic view of the structure of FIG. 1 in a brake-off state;
FIG. 3 is a schematic diagram illustrating a comparison of the opening and closing states in FIG. 1;
fig. 4 is a schematic structural diagram of embodiment 9 of the double-acting arc extinguishing chamber in the opening state.
The names of the corresponding components in the figures are: 11. a stationary end assembly; 12. static arc contacts; 13. a static end shielding cylinder; 14. an end connection plate; 21. a moving end assembly; 22. an insulating pull rod; 23. a moving main contact; 24. a large nozzle; 25. a connecting cylinder; 26. a sealing plate; 27. a moving arc contact; 28. a pressure cylinder; 29. a plenum chamber; 210. a pull rod connecting seat; 31. a double-acting hydraulic cylinder; 32. an outer cylinder; 33. an isolation cylinder; 34. an inner chamber; 35. an outer chamber; 36. an inner piston; 37. an outer piston; 38. a throttle passage; 41. a stationary end assembly; 42. static arc contacts; 43. a stationary main contact; 51. a moving end assembly; 52. an insulating pull rod; 53. a moving main contact; 54. a large nozzle; 55. a small nozzle; 57. a moving arc contact; 58. a self-energy arc extinguishing chamber plenum chamber; 59. an expansion chamber; 61. a double-acting hydraulic cylinder.
Detailed Description
The present application 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 application more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the application, i.e., the embodiments described are merely some, but not all, of the embodiments of the application. The components of the embodiments of the present application 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 application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. 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 application.
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 application, 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 application can be understood by those skilled in the art in specific cases.
In the description of the present application, 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 application can be understood by those skilled in the art in specific cases.
The present application is described in further detail below with reference to examples.
Example 1 of double-acting arc extinguishing chamber in the present application:
as shown in fig. 1, 2 and 3, the double-acting arc extinguishing chamber is a gas-compressing arc extinguishing chamber, and comprises a static end assembly 11, a moving end assembly 21 and a double-acting hydraulic cylinder 31. The static end assembly 11 comprises a static arc contact 12, and the static arc contact 12 is arranged in a guiding way along the front-back direction; the movable end assembly 21 comprises an insulating pull rod 22, a movable main contact 23, a large nozzle 24, a movable arc contact 27 and a connecting cylinder 25, and further comprises a pressure cylinder structure, wherein the pressure cylinder structure is the same as the prior art, the pressure cylinder structure comprises a pressure cylinder 28, the pressure cylinder 28 is used for forming a pressure chamber 29, a pull rod connecting seat 210 is arranged in the pressure cylinder 28, the pull rod connecting seat 210 is fixedly connected with the insulating pull rod 22, a gas channel is arranged on the pull rod connecting seat 210, and gas in the pressure chamber 29 is discharged. The movable end assembly 21 is in transmission connection with the operating mechanism through an insulating pull rod 22 and is used for driving the movable end assembly 21 to move back and forth under the drive of the operating mechanism so as to realize opening and closing.
The double-acting hydraulic cylinder 31 comprises a cylinder body which is fixed on the static end assembly and comprises an outer cylinder body 32 and an isolating cylinder body 33, wherein the outer cylinder body 32 and the isolating cylinder body 33 are coaxially arranged, and the diameter of the isolating cylinder body 33 is smaller than that of the outer cylinder body 32. The space inside the isolation cylinder 33 forms an inner chamber 34, the annular space between the outer cylinder 32 and the isolation cylinder 33 forms an outer chamber 35, and the isolation cylinder 33 is isolated between the inner chamber 34 and the outer chamber 35.
The inner chamber 34 is a cylindrical chamber within which is disposed an inner piston 36; the inner piston 36 comprises an inner stopper body, the inner stopper body is arranged in the inner chamber 34 in a guiding way, a first inner stopper body and a second inner stopper body are respectively arranged at two axial sides of the inner stopper body, the first inner stopper body is close to the movable end assembly 21, and the second inner stopper body is far away from the movable end assembly 21. The first and second inner stopper rods are of equal diameter and extend from respective ends of the inner chamber 34; the first inner stopper rod body is fixed with a static arc contact 12.
The outer chamber 35 is an annular chamber, and surrounds the outer side of the inner chamber 34, and an outer piston 37 is arranged in the outer chamber 35. The outer piston 37 comprises an outer stopper body, which is an annular stopper body, and is assembled in the outer chamber 35 in a guiding manner, wherein a first outer stopper body and a second outer stopper body are respectively arranged on two axial sides of the outer stopper body, the first outer stopper body is close to the movable end assembly 21, and the second outer stopper body is far away from the movable end assembly 21. The first and second outer stopper rods are of equal diameter and extend from the respective ends of the outer chamber 35. In order to ensure uniform stress, two outer stopper rods are arranged on two axial sides of the outer piston 37, and the two outer stopper rods on each side are uniformly distributed along the circumferential direction. One end of the connecting cylinder 25 is fixed on the large nozzle 24, the other end is provided with a sealing plate 26, the static arc contact 12 passes through the sealing plate 26, and the sealing plate 26 is fixedly connected with the outer plug rod body, so that the movable end assembly 21 is in transmission connection with the outer plug rod body through the connecting cylinder 25. The outer peripheral surface of the connection tube 25 is provided with air flow holes (omitted in the drawing) for restricting the flow direction and flow rate of the air flow.
Of course, as is common knowledge, for a piston, the stopper and the rod of the piston must be in sliding sealing engagement with the corresponding parts of the cylinder.
The inner chamber 34 and the outer chamber 35 are filled with hydraulic oil, the two axial ends of the isolation cylinder 33 are respectively provided with a radial through hole, the radial through holes form a throttling channel 38, and the throttling channel 38 is used for communicating the corresponding ends of the inner chamber 34 and the outer chamber 35, so that the inner piston 36 and the outer plug rod body are linked, the hydraulic oil can be damped, throttling is formed, and the motion of the moving end assembly is buffered. By adjusting the diameter of the throttle passage 38, the flow resistance of the hydraulic oil can also be adjusted, which plays a role in adjusting the damping. Of course, whether the throttle channel 38 can play a damping role is related to the drift diameter of the throttle channel 38 and the movement speed of the piston, and in the present application, the throttle channel 38 is matched with the design action speed of the arc extinguishing chamber, so that the damping role can be played.
The double-acting arc extinguishing chamber further comprises a static end shielding cylinder 13, one end of the static end shielding cylinder 13, which is close to the moving end assembly 21, corresponds to the forefront end of the static arc contact 12, and one end, which is far away from the moving end assembly 21, is provided with an end connecting plate 14, and is fixed on the inner piston 36 through the end connecting plate 14. In order to realize the fixation of the cylinder body, a slot can be arranged on the side wall of the static end shielding cylinder for the fixed connection structure to pass through.
In the present application, the total amount of hydraulic oil is unchanged, that is, the volume of hydraulic oil flowing out of the inner chamber 34 is equal to the volume of hydraulic oil flowing in of the outer chamber 35, and the volume of hydraulic oil flowing out of the outer chamber 35 is equal to the volume of hydraulic oil flowing in of the inner chamber 34. The following relationship exists:
as can be seen from the above, the values of phi A, phi B, phi C, phi D and phi E can be adjusted to adjust L 1 And L is equal to 2 The purpose of adjusting the motion stroke proportion of the moving end and the static end is realized.
When the insulating pull rod 22 performs closing motion, under the pushing of the outer plug body, the outer plug body of the outer piston 37 pushes hydraulic oil to flow through the radial through hole on the left side in the figure, the hydraulic oil drives the inner plug body of the inner piston 36 to move, and then the static arc contact 12 and the static end shielding cylinder 13 are driven to move towards the movable end assembly 21 through the inner plug body, and the moving process of the static end shielding cylinder 13 and the static arc contact 12 is matched with the designed closing process, so that the function of optimizing a fracture electric field can be achieved. When the insulating pull rod 22 performs the opening movement, the movement process is opposite to the closing movement process, and the movement process of the static end shielding cylinder 13 and the static arc contact 12 is matched with the designed opening movement process, so that the function of optimizing the fracture electric field can be achieved.
The hydraulic double-acting structure is adopted, the static end component of the arc extinguish chamber is driven by the moving end component of the arc extinguish chamber, the power required by the movement of the static end is small, the relative movement speed can be effectively improved under the condition that the movement speed of the moving end is unchanged, meanwhile, the hydraulic double-acting structure is simple and reliable, the high impact can be borne, and the buffer effect can be realized. In the opening and closing process of the arc extinguishing chamber, the electric field distribution of the fracture has great influence on the opening and closing performance of the arc extinguishing chamber, is an important index for judging arc re-burning in the opening and closing process, and is an important index for judging pre-breakdown in the closing process, so that the application has important significance for optimizing the electric field of the fracture. And by adjusting parameters such as the diameter of an inner cavity and an outer cavity of the double-acting hydraulic cylinder, the diameter of an outer plug rod body and the like, the stroke proportion of the movable end assembly and the static end assembly can be effectively adjusted.
Example 2 of double-acting arc extinguishing chamber in the present application:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the radial through hole is provided on the isolation cylinder 33, the throttle passage 38 is formed by the radial through hole, and in this embodiment, the communicating holes are provided on the end surfaces of the inner chamber 34 and the outer chamber 35, and the inner chamber 34 and the outer chamber 35 are communicated by a pipe connected between the two communicating holes.
Example 3 of double-acting arc extinguishing chamber in the present application:
this embodiment is different from embodiment 1 in that in embodiment 1, the partition cylinder 33 directly partitions the inner chamber 34 and the outer chamber 35, whereas in this embodiment, an annular cavity is provided between the inner chamber 34 and the outer chamber 35.
Example 4 of double-acting arc extinguishing chamber in the present application:
the present embodiment is different from embodiment 1 in that in embodiment 1, the double-acting arc extinguishing chamber further includes a stationary shielding cylinder 13, and in this embodiment, the stationary assembly 11 is not provided with the stationary shielding cylinder 13.
Example 5 of double-acting arc extinguishing chamber in the present application:
the present embodiment is different from embodiment 1 in that in embodiment 1, the stationary shielding cylinder 13 is fixed at an end of the inner piston 36 away from the moving end assembly 21, whereas in this embodiment, the stationary shielding cylinder 13 is fixed at an end of the inner piston 36 near the moving end assembly 21.
Example 6 of double-acting arc extinguishing chamber in the present application:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the moving end assembly 21 includes a large nozzle 24, a connecting cylinder 25 is disposed at the front end of the large nozzle 24, and the connecting cylinder 25 is coaxially disposed with the static arc contact 12. In this embodiment, the large nozzle 24 is provided with a rod connecting seat, and the outer stopper rod is directly fixed on the rod connecting seat.
Example 7 of double-acting arc extinguishing chamber in the present application:
this embodiment differs from embodiment 1 in that in embodiment 1, the outer chamber 35 is an annular chamber, and is circumferentially disposed radially outwardly of the inner chamber 34. In the present embodiment, the outer chamber 35 is a cylindrical structure, and is disposed independently of the inner chamber 34, and two outer chambers 35 are disposed on two radial sides of the inner chamber 34. Of course, in other embodiments, it is also possible to provide a cylindrical outer chamber 35 on only one radial side of the inner chamber 34.
Example 8 of double-acting arc extinguishing chamber in the present application:
this embodiment differs from embodiment 1 in that in embodiment 1, the cylinder body of the double-acting hydraulic cylinder 31 is fixed, and the outer piston 37 and the inner piston 36 are connected to the movable end assembly 21 and the stationary arcing contact 12, respectively. In this embodiment, the inner piston 36 of the double acting hydraulic cylinder 31 is fixed, and the outer piston 37 and the cylinder body are connected to the moving end assembly 21 and the static arcing contact 12, respectively. Of course, in other embodiments, the outer piston 37 of the double acting hydraulic cylinder 31 may be fixed, while the cylinder body and inner piston 36 are connected to the moving end assembly 21 and the stationary arcing contact 12, respectively.
Example 9 of double-acting arc extinguishing chamber in the present application:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the double-acting arc extinguishing chamber is a gas-compressing arc extinguishing chamber, while in this embodiment, the double-acting arc extinguishing chamber is a self-energy arc extinguishing chamber, and the static end shielding cylinder 13 is not provided; specifically, as shown in fig. 4, the self-energy arc extinguishing chamber comprises a static end assembly 41, a movable end assembly 51 and a double-acting hydraulic cylinder 61, wherein the static end assembly 41 comprises a static arc contact 42 and a static main contact 43, the static arc contact 42 is arranged in a guiding way along the front-back direction, and the static main contact 43 is fixed on the cylinder body of the double-acting hydraulic cylinder 61; the moving end assembly 51 includes an insulating tie rod 52, a moving main contact 53, a large nozzle 54, a moving arc contact 57, a self-extinguishing chamber plenum 58, and an expansion chamber 59. The moving end assembly 51 of the above-described type is a conventional art, and the air flow can be heated and ejected from the expansion chamber during operation, and the specific structure thereof will not be described here. The structure of the double-acting hydraulic cylinder 61 is the same as that in the embodiment.
The above description is only a preferred embodiment of the present application, and the patent protection scope of the present application is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present application should be included in the protection scope of the present application.
Claims (9)
1. A dual-type arc chute comprising:
the static end assembly (11), the static end assembly (11) comprises a static arc contact (12), and the static arc contact (12) is arranged in a guiding way along the front-back direction;
the movable end assembly (21) is used for moving back and forth under the drive of the operating mechanism to realize opening and closing, and comprises a gas pressing chamber (29) used for forming a gas pressing type arc extinguishing chamber;
characterized by further comprising:
double-acting hydraulic cylinder (31), including the cylinder body, be equipped with interior cavity (34) and outer cavity (35) on the cylinder body:
the inner cavity (34) is a cylindrical cavity, an inner piston (36) is arranged in the inner cavity, the inner piston (36) comprises an inner stopper body, the inner stopper body is arranged in the inner cavity (34) in a guiding way, a first inner stopper body and a second inner stopper body are respectively arranged at two axial sides of the inner stopper body, the diameters of the first inner stopper body and the second inner stopper body are equal, and the first inner stopper body and the second inner stopper body respectively extend out of corresponding ends of the inner cavity (34);
the outer cavity (35) is arranged at the radial outer side of the inner cavity (34), an outer piston (37) is arranged in the outer cavity, the outer piston (37) comprises an outer stopper body, the outer stopper body is assembled in the outer cavity (35) in a guiding way, a first outer stopper body and a second outer stopper body are respectively arranged at two axial sides of the outer stopper body, the diameters of the first outer stopper body and the second outer stopper body are equal, and the outer stopper bodies extend out of corresponding ends of the outer cavity (35) respectively;
one of the cylinder body, the inner piston (36) and the outer piston (37) is fixed at the static end assembly (11), and the other two are respectively connected with the movable end assembly (21) and the static arc contact (12) in a transmission way;
the two axial ends of the double-acting hydraulic cylinder (31) are respectively provided with a throttling channel (38), and the throttling channels (38) are used for communicating the corresponding ends of the inner chamber (34) and the outer chamber (35) so that the moving end assembly (21) is linked with the static arc contact (12) and the movement of the moving end assembly (21) is buffered.
2. A double acting arc chute according to claim 1, characterized in that the outer chamber (35) is an annular chamber, circumferentially arranged radially outside the inner chamber (34).
3. A double-acting arc extinguishing chamber according to claim 2, characterized in that an isolating cylinder (33) is provided in the cylinder, the isolating cylinder (33) being adapted to isolate the outer chamber (35); the isolating cylinder body (33) is provided with a radial through hole, and the throttling passage (38) is formed by the radial through hole.
4. A double-acting arc chute according to claim 1 or 2 or 3, characterized in that the double-acting arc chute further comprises a stationary end shield cylinder (13), said stationary end shield cylinder (13) being fixed to a cylinder, an inner piston (36) or an outer piston (37) connected to the stationary arcing contact (12).
5. A double-acting arc chute according to claim 4, characterized in that the end of the stationary end shield cylinder (13) near the moving end assembly (21) corresponds to the foremost end of the stationary arcing contact (12).
6. A double-acting arc chute according to claim 4, characterized in that the stationary end shield cylinder (13) is fixed at the end of the cylinder, inner piston (36) or outer piston (37) connected to the stationary arcing contact (12) remote from the moving end assembly (21).
7. A double-acting arc extinguishing chamber according to claim 1, 2 or 3, characterized in that more than two outer stopper bodies are arranged on either side of the outer stopper body in the axial direction, and the outer stopper bodies on each side are evenly distributed along the circumferential direction.
8. A double-acting arc extinguishing chamber according to claim 1, 2 or 3, characterized in that the moving end assembly (21) comprises a large nozzle (24), the front end of the large nozzle (24) is provided with a connecting cylinder (25), and the connecting cylinder (25) and the static arc contact (12) are coaxially arranged;
one end of the connecting cylinder (25) is fixed on the large nozzle (24), the other end is provided with a sealing plate (26), and the static arc contact (12) passes through the sealing plate (26); the outer peripheral surface of the connecting cylinder (25) is provided with an airflow hole for restricting the flow direction and the flow rate of the airflow;
the movable end assembly (21) is in transmission connection with a corresponding cylinder body, an inner piston (36) or an outer piston (37) of the double-acting hydraulic cylinder (31) through a connecting cylinder (25).
9. A double-acting arc extinguishing chamber according to claim 1 or 2 or 3, characterized in that the cylinder body of the double-acting hydraulic cylinder (31) is fixed, and the outer piston (37) and the inner piston (36) are connected with the moving end assembly (21) and the static arc contact (12), respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020114488020 | 2020-12-09 | ||
| CN202011448802.0A CN112713054A (en) | 2020-12-09 | 2020-12-09 | Pneumatic arc extinguish chamber capable of moving in two directions |
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| CN113571376A CN113571376A (en) | 2021-10-29 |
| CN113571376B true CN113571376B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011448802.0A Pending CN112713054A (en) | 2020-12-09 | 2020-12-09 | Pneumatic arc extinguish chamber capable of moving in two directions |
| CN202110693639.2A Active CN113571376B (en) | 2020-12-09 | 2021-06-22 | Double-action arc extinguishing chamber |
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| CN202011448802.0A Pending CN112713054A (en) | 2020-12-09 | 2020-12-09 | Pneumatic arc extinguish chamber capable of moving in two directions |
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| CN113175463A (en) * | 2021-04-30 | 2021-07-27 | 萨驰智能装备股份有限公司 | Integrated hydraulic system and tire vulcanizer |
| CN114420481A (en) * | 2022-01-06 | 2022-04-29 | 平高集团有限公司 | Isolating switch with arc extinguishing structure and moving contact component of isolating switch |
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| CN102820162A (en) * | 2012-08-14 | 2012-12-12 | 河南平高电气股份有限公司 | Double-acting high-voltage sulfur hexafluoride circuit breaker and double-acting transmission device thereof |
| CN103531410A (en) * | 2012-07-04 | 2014-01-22 | 乐星湖开电气（湖北）有限公司 | Self-driven arc extinguishing chamber for double acting type high voltage SF6 breaker |
| CN104715965A (en) * | 2015-01-26 | 2015-06-17 | 山东泰开高压开关有限公司 | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2892851B1 (en) * | 2005-11-03 | 2013-12-06 | Areva T & D Sa | CURRENT CURRENT CHAMBER WITH DOUBLE COMPRESSION CHAMBER |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103531410A (en) * | 2012-07-04 | 2014-01-22 | 乐星湖开电气（湖北）有限公司 | Self-driven arc extinguishing chamber for double acting type high voltage SF6 breaker |
| CN102820162A (en) * | 2012-08-14 | 2012-12-12 | 河南平高电气股份有限公司 | Double-acting high-voltage sulfur hexafluoride circuit breaker and double-acting transmission device thereof |
| CN104715965A (en) * | 2015-01-26 | 2015-06-17 | 山东泰开高压开关有限公司 | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
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| CN113571376A (en) | 2021-10-29 |
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