CN218160149U - Vacuum arc extinguish chamber - Google Patents
Vacuum arc extinguish chamber Download PDFInfo
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- CN218160149U CN218160149U CN202222596258.5U CN202222596258U CN218160149U CN 218160149 U CN218160149 U CN 218160149U CN 202222596258 U CN202222596258 U CN 202222596258U CN 218160149 U CN218160149 U CN 218160149U
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- vacuum interrupter
- conducting rod
- insulating shell
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Abstract
The utility model relates to the technical field of switches, a vacuum interrupter is specifically disclosed. The vacuum arc extinguish chamber comprises a movable conducting rod, a static conducting rod, a first insulating shell, a second insulating shell, a shielding cylinder and a first shielding cover; the first insulating shell is sleeved outside the movable conducting rod, the second insulating shell is sleeved outside the static conducting rod, two ends of the shielding cylinder are respectively connected with the first insulating shell and the second insulating shell, and the first contact and the second contact are both arranged in the shielding cylinder; meanwhile, the first shielding cover is respectively arranged at the first insulating shell and the second insulating shell and connected to one end of the shielding cylinder. The utility model discloses well exerted shielding cylinder structure does benefit to the rapid cooling after vacuum interrupter opens and shuts to satisfy the recovery demand of high frequency cut-off medium, and first shield cover is used for sheltering from first insulation housing and second insulation housing's inner wall along the second direction, thereby guarantees first insulation housing and second insulation housing's insulating nature, improves vacuum interrupter's electric life.
Description
Technical Field
The utility model relates to the technical field of switches, concretely relates to vacuum interrupter.
Background
The vacuum arc extinguish chamber, also known as a vacuum switch tube, is a core component of a medium-high voltage power switch, and has the main functions of quickly extinguishing an arc and inhibiting current after a medium-high voltage circuit is cut off a power supply through excellent insulation property of vacuum in the tube, so that accidents and accidents are avoided. The vacuum circuit breaker is used as an environment-friendly and green electric power product and is more and more widely applied to a power grid, and the vacuum arc extinguish chamber is a core element of the vacuum circuit breaker.
The vehicle-mounted switch for high-speed rails and subways and the switch in a special application occasion have long electric service life requirements on the vacuum arc-extinguishing chamber, but the electric service life of the vacuum arc-extinguishing chamber in the prior art is only hundreds of times, the number of times of full-capacity on-off is only dozens of times, and the requirements of long electric service life and high-frequency on-off cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vacuum interrupter to solve among the prior art vacuum interrupter electric life-span only be several hundred, full capacity cut-off number of times only is dozens of times, can't satisfy the problem that long electric life-span, high frequency cut-off required.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a vacuum arc extinguish chamber, include:
the device comprises a movable conductive rod and a static conductive rod, wherein a first contact is arranged at the end part of the movable conductive rod, a second contact is arranged at the end part of the static conductive rod, and the first contact and the second contact can be mutually closed or mutually separated along a first direction;
the first insulating shell is sleeved outside the movable conducting rod;
the second insulating shell is sleeved outside the static conductive rod;
a shielding cylinder, wherein two ends of the shielding cylinder are respectively connected with the first insulating shell and the second insulating shell, and the first contact and the second contact are both arranged in the shielding cylinder;
and the first shielding cover is respectively arranged at one end of the first insulating shell and one end of the second insulating shell connected to the shielding cylinder and used for shielding the inner walls of the first insulating shell and the second insulating shell along a second direction.
As an alternative to the vacuum interrupter, a first opening is provided between the first shielding can and the first insulating housing, and the first opening is opened toward an end away from the first contact along the first direction; a second opening is formed between the first shield case and the second insulating housing, and the second opening is opened toward an end away from the second contact along the first direction.
As an alternative to the vacuum interrupter, a free end of the first shield case connected to the first insulating housing is inclined toward the movable conductive rod; the free end of the first shield shell connected to the second insulating housing is inclined toward the direction close to the static conductive rod.
As an alternative of the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber further comprises a second shielding case, and the second shielding case is arranged at the other end of the second insulating shell; the opening between the second shielding cover and the second insulating housing is arranged in the second opening and is opposite to the second opening.
As an alternative of the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber further comprises a third shielding case, and the third shielding case is arranged at the other end of the first insulating shell; the opening between the third shielding cover and the first insulating housing is arranged in the first opening and is opposite to the first opening.
As an alternative solution of the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber further includes a movable cover plate, a static cover plate and a bellows, the movable cover plate is connected to one end of the first insulating housing away from the shielding cylinder, and the movable conducting rod is slidably disposed on the movable cover plate along the first direction; the static cover plate is connected to one end, far away from the shielding cylinder, of the second insulating shell, and the static conductive rod penetrates through the static cover plate along the first direction; the corrugated pipe is sleeved on the movable conducting rod, one end of the corrugated pipe is connected to the movable cover plate, and the other end of the corrugated pipe is connected to the movable conducting rod.
As an alternative to the vacuum interrupter, the bellows is disposed in the movable cover plate.
As an alternative solution of the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber further includes a guide sleeve, the guide sleeve is connected to one end of the movable cover plate away from the first insulating housing, and the movable conducting rod is slidably inserted into the guide sleeve along a first direction; the guide sleeve is used for limiting the movable conducting rod to rotate along the circumferential direction.
As an alternative of the vacuum interrupter, the first insulating housing is extended toward the movable cover plate.
The utility model has the advantages that:
the vacuum arc extinguish chamber comprises a movable conducting rod, a static conducting rod, a first insulating shell, a second insulating shell, a shielding cylinder and a first shielding cover. The end part of the movable conducting rod is provided with a first contact, the end part of the static conducting rod is provided with a second contact, and the first contact and the second contact can be mutually closed or mutually separated along a first direction, so that the closing and the breaking of the vacuum arc-extinguishing chamber are realized. The first insulating shell is sleeved on the movable conducting rod, the second insulating shell is sleeved on the static conducting rod, two ends of the shielding cylinder are connected with the first insulating shell and the second insulating shell respectively, and the first contact and the second contact are arranged in the shielding cylinder, so that most of metal steam and cut-off splashed objects are absorbed by the shielding cylinder in the cut-off process of the first contact and the second contact, charged particles are prevented from returning to a contact gap, the possibility of restriking is reduced, and the exposed shielding cylinder structure is favorable for rapid cooling of the vacuum arc extinguish chamber after the vacuum arc extinguish chamber is cut off, so that the recovery requirement of a high-frequency cut-off medium is met. Simultaneously, first insulating casing and second insulating casing are located respectively to first shield cover and are connected in the one end of a shield section of thick bamboo for along the inner wall that the second direction sheltered from first insulating casing and second insulating casing, prevent with this that first insulating casing and second insulating casing from adsorbing metal steam, effectively shelter from electric arc, thereby guarantee first insulating casing and second insulating casing's insulating nature, improve vacuum interrupter's electric life.
Drawings
Fig. 1 is a schematic structural diagram of a first vacuum interrupter provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second vacuum interrupter provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third vacuum interrupter provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fourth vacuum interrupter provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fifth vacuum interrupter according to an embodiment of the present invention.
In the figure:
100. a vacuum arc-extinguishing chamber; 101. a movable conductive rod; 101a, a first contact; 102. a static conductive rod; 102a, a second contact; 103. a first insulating housing; 104. a second insulating housing; 105. a shielding cylinder; 106. a first shield case; 106a, a first opening; 106b, a second opening; 107. a second shield case; 108. a third shield case; 109. a movable cover plate; 110. a stationary cover plate; 111. a bellows; 112. and a guide sleeve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
The present embodiment provides a vacuum interrupter which can rapidly extinguish an arc and suppress a current after a medium-high voltage circuit is powered off by excellent insulation in a tube, thereby avoiding an accident or an accident.
As shown in fig. 1 to 5, the vacuum interrupter 100 includes a movable conductive rod 101, a stationary conductive rod 102, a first insulating housing 103, a second insulating housing 104, a shielding cylinder 105, and a first shielding cover 106. The end of the moving conductive rod 101 is provided with a first contact 101a, the end of the static conductive rod 102 is provided with a second contact 102a, and the first contact 101a and the second contact 102a can be mutually closed or mutually separated along a first direction (i.e. the X direction in the drawing), so that the closing and the breaking of the vacuum interrupter 100 are realized.
The first insulating housing 103 is sleeved outside the movable conducting rod 101, the second insulating housing 104 is sleeved outside the static conducting rod 102, two ends of the shielding cylinder 105 are respectively connected with the first insulating housing 103 and the second insulating housing 104, and the first contact 101a and the second contact 102a are both arranged in the shielding cylinder 105, so that most of metal steam and cut-off splashed objects are absorbed by the shielding cylinder 105 in the cut-off process of the first contact 101a and the second contact 102a, the charged particles are prevented from returning to a contact gap, the possibility of re-ignition is reduced, and the exposed shielding cylinder 105 structure is beneficial to rapidly cooling the vacuum arc-extinguishing chamber 100 after being cut off, so as to meet the recovery requirement of a high-frequency cut-off medium. Meanwhile, the first shielding cover 106 is respectively arranged at one end of the first insulating housing 103 and one end of the second insulating housing 104 connected to the shielding cylinder 105, and is used for shielding the inner walls of the first insulating housing 103 and the second insulating housing 104 along the second direction (i.e., the Y direction in the drawing), so as to prevent the first insulating housing 103 and the second insulating housing 104 from adsorbing the metal vapor, and effectively shield the electric arc, thereby ensuring the insulation property of the first insulating housing 103 and the second insulating housing 104, and improving the electrical life of the vacuum arc extinguish chamber 100. Wherein the first direction and the second direction are arranged perpendicular to each other.
As shown in fig. 1 and fig. 2, a first opening 106a is provided between the first shielding cover 106 and the first insulating housing 103, the first opening 106a is opened toward an end away from the first contact 101a along the first direction, a second opening 106b is provided between the first shielding cover 106 and the second insulating housing 104, and the second opening 106b is opened toward an end away from the second contact 102a along the first direction, so as to ensure that a potential difference is sequentially formed among the movable conducting rod 101, the first shielding cover 106 and the static conducting rod 102, improve distribution of an electric field and capacitance in the vacuum interrupter 100, and facilitate miniaturization of the insulating housing of the vacuum interrupter 100. Meanwhile, the first opening 106a is opened towards one end far away from the first contact 101a along the first direction, and the second opening 106b is opened towards one end far away from the second contact 102a along the first direction, so that the metal vapor and the switching splash can be prevented from directly passing through the first opening 106a and the second opening 106b and splashing on the insulating shell.
Further, the free end of the first shield 106 connected to the first insulating housing 103 is inclined toward the direction close to the movable conductive rod 101, and the free end of the first shield 106 connected to the second insulating housing 104 is inclined toward the direction close to the stationary conductive rod 102, so that the shielding angle for shielding the first insulating housing 103 and the second insulating housing 104 is enlarged by the inclined first shield 106, and the first insulating housing 103 and the second insulating housing 104 are further prevented from adsorbing the metal vapor.
As shown in fig. 3, the vacuum interrupter 100 further includes a second shielding cover 107, the second shielding cover 107 is disposed at the other end of the second insulating housing 104, an opening between the second shielding cover 107 and the second insulating housing 104 is disposed in the second opening 106b, and is disposed opposite to the second opening 106b, so that after the second shielding cover 107 is added, the second insulating housing 104 can be shielded jointly by the first shielding cover 106 and the second shielding cover 107, so as to enhance shielding of metal vapor and arc. The first shield 106 and the second shield 107 extend along a first direction.
As shown in fig. 4, the vacuum interrupter 100 further includes a third shielding case 108, the third shielding case 108 is disposed at the other end of the first insulating housing 103, and an opening between the third shielding case 108 and the first insulating housing 103 is disposed in the first opening 106a and is disposed opposite to the first opening 106a, so that after the third shielding case 108 is added, the first insulating housing 103 can be shielded jointly by the first shielding case 106 and the third shielding case 108, so as to enhance shielding of metal vapor and arc. The first shield 106 and the third shield 108 extend along a first direction.
Further, the vacuum interrupter 100 further includes a movable cover plate 109, a static cover plate 110, and a bellows 111, the movable cover plate 109 is connected to one end of the first insulating housing 103 away from the shielding cylinder 105, and the movable conducting rod 101 slides along the first direction and penetrates through the movable cover plate 109, meanwhile, the static cover plate 110 is connected to one end of the second insulating housing 104 away from the shielding cylinder 105, and the static conducting rod 102 penetrates through the static cover plate 110 along the first direction, and then the first contact 101a and the second contact 102a can be closed and separated by sliding the movable conducting rod 101 along the first direction and fixing the static conducting rod 102. The bellows 111 is sleeved on the movable conductive rod 101, one end of the bellows 111 is connected to the movable cover plate 109, and the other end of the bellows 111 is connected to the movable conductive rod 101.
Further, the vacuum interrupter 100 further includes a guide sleeve 112, the guide sleeve 112 is connected to one end of the movable cover plate 109 far away from the first insulating housing 103, the movable conducting rod 101 is slidably disposed through the guide sleeve 112 along the first direction, so as to ensure that the movable conducting rod 101 moves along the axis of the vacuum interrupter, and meanwhile, the guide sleeve 112 is used for limiting the movable conducting rod 101 to rotate along the circumferential direction, so as to prevent the movable conducting rod 101 from driving the bellows 111 to rotate, thereby causing damage to the bellows 111.
As shown in fig. 2 and 5, the bellows 111 is disposed in the movable cover 109, so that the first shielding cover 106 does not interfere with the bellows 111, so that the vacuum interrupter 100 is suitable for different sizes of bellows 111, and the first insulating housing 103 does not need to be sleeved outside the bellows 111, further contributing to miniaturization of the insulating housing of the vacuum interrupter 100.
As shown in fig. 1 and 3, the first insulating housing 103 is extended toward the movable cover 109, so that the first insulating housing 103 is extended to improve the internal insulating capability of the first insulating housing 103. Specifically, the bellows 111 can be provided inside the first insulating housing 103.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A vacuum interrupter, comprising:
the device comprises a movable conducting rod (101) and a static conducting rod (102), wherein a first contact (101 a) is arranged at the end part of the movable conducting rod (101), a second contact (102 a) is arranged at the end part of the static conducting rod (102), and the first contact (101 a) and the second contact (102 a) can be mutually closed or separated along a first direction;
the first insulating shell (103), the first insulating shell (103) is sleeved outside the movable conducting rod (101);
the second insulating shell (104), the second insulating shell (104) is sleeved outside the static conductive rod (102);
the two ends of the shielding cylinder (105) are respectively connected with the first insulating shell (103) and the second insulating shell (104), and the first contact (101 a) and the second contact (102 a) are arranged in the shielding cylinder (105);
the first shielding cover (106) is arranged at one end of the shielding cylinder (105), and the first shielding cover (106) is respectively arranged at the first insulating shell (103) and the second insulating shell (104) and used for shielding the inner walls of the first insulating shell (103) and the second insulating shell (104) along a second direction.
2. Vacuum interrupter according to claim 1, characterized in that between the first shielding cage (106) and the first insulating housing (103) there is a first opening (106 a), the first opening (106 a) opening in the first direction towards the end away from the first contact (101 a); a second opening (106 b) is formed between the first shielding cover (106) and the second insulating shell (104), and the second opening (106 b) is opened towards one end far away from the second contact (102 a) along the first direction.
3. Vacuum interrupter according to claim 2, characterized in that the free end of the first shielding cage (106) connected to the first insulating housing (103) is inclined towards the direction of approach of the moving conducting rod (101); the free end of the first shield (106) connected to the second insulating housing (104) is inclined toward the direction approaching the static conductive bar (102).
4. The vacuum interrupter according to claim 2, characterized in that the vacuum interrupter (100) further comprises a second shielding cage (107), the second shielding cage (107) being provided at the other end of the second insulating housing (104); an opening between the second shielding case (107) and the second insulating housing (104) is provided in the second opening (106 b), and is disposed opposite to the second opening (106 b).
5. The vacuum interrupter according to claim 2, characterized in that the vacuum interrupter (100) further comprises a third shielding cage (108), the third shielding cage (108) being provided at the other end of the first insulating housing (103); an opening between the third shielding case (108) and the first insulating housing (103) is disposed in the first opening (106 a), and is disposed opposite to the first opening (106 a).
6. The vacuum interrupter according to any one of claims 1 to 5, characterized in that the vacuum interrupter (100) further comprises a movable cover plate (109), a fixed cover plate (110), and a bellows (111), wherein the movable cover plate (109) is connected to an end of the first insulating housing (103) away from the shielding cylinder (105), and the movable conducting rod (101) is slidably disposed on the movable cover plate (109) along the first direction; the static cover plate (110) is connected to one end, far away from the shielding cylinder (105), of the second insulating shell (104), and the static conductive rod (102) penetrates through the static cover plate (110) along the first direction; the corrugated pipe (111) is sleeved on the movable conducting rod (101), one end of the corrugated pipe (111) is connected to the movable cover plate (109), and the other end of the corrugated pipe (111) is connected to the movable conducting rod (101).
7. Vacuum interrupter according to claim 6, characterized in that the bellows (111) is arranged in the moving cover plate (109).
8. The vacuum interrupter according to claim 6, characterized in that the vacuum interrupter (100) further comprises a guide sleeve (112), the guide sleeve (112) is connected to an end of the movable cover plate (109) far away from the first insulating housing (103), and the movable conducting rod (101) is slidably disposed through the guide sleeve (112) along a first direction; the guide sleeve (112) is used for limiting the movable conducting rod (101) to rotate along the circumferential direction.
9. Vacuum interrupter according to claim 6, characterized in that the first insulating housing (103) is elongated towards the direction of the moving cover plate (109).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222596258.5U CN218160149U (en) | 2022-09-29 | 2022-09-29 | Vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222596258.5U CN218160149U (en) | 2022-09-29 | 2022-09-29 | Vacuum arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218160149U true CN218160149U (en) | 2022-12-27 |
Family
ID=84564084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222596258.5U Active CN218160149U (en) | 2022-09-29 | 2022-09-29 | Vacuum arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218160149U (en) |
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2022
- 2022-09-29 CN CN202222596258.5U patent/CN218160149U/en active Active
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