CN202142468U - Three station vacuum switch tube - Google Patents
Three station vacuum switch tube Download PDFInfo
- Publication number
- CN202142468U CN202142468U CN201120263308U CN201120263308U CN202142468U CN 202142468 U CN202142468 U CN 202142468U CN 201120263308 U CN201120263308 U CN 201120263308U CN 201120263308 U CN201120263308 U CN 201120263308U CN 202142468 U CN202142468 U CN 202142468U
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- China
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- contact
- conducting rod
- moving
- vacuum switch
- switch tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a three station vacuum switch tube which includes an insulating housing, a static end conducting rod, a moving end conducting rod, and a grounding flange. The static end conducting rod is connected with a high voltage inlet wire, and an end part of the static end conducting rod is provided with a static contact. The moving end conducting rod is used to connect with a power load, and upper and lower faces of the top of the moving end conducting rod in the vacuum switch tube are provided with a moving insolating contact and a moving grounding contact respectively. The top of a middle part of the grounding flange is provided with a static grounding contact. The top of the moving end conducting rod is provided with a shielding cover which envelops the moving isolating contact and the static contact, and the shielding cover is used for the fracture arc shielding and can move along with the moving end conducting rod. The shielding cover can coat an isolating fracture in the whole course so as to effectively shield the arc effect. Besides, the structure of the shielding cover is simple, and the height of a product can be reduced. The three station vacuum switch tube also adopts an inward retracting middle end cover which is fixed on the lower part of the grounding flange, and the middle end cover can embed a switch frame fixing device into a recess of the middle end cover to better support the grounding flange and prevent the middle end cover and an insulating housing welded seam from being stressed, thus the structure strength of the three station vacuum switch tube is improved, and the reliability and the service lifetime are enhanced.
Description
Technical field
The utility model relates to a kind of vacuum switch tube, and especially a kind of three station vacuum switch tubes that are used to realize protecting electrical power system and switching belong to high voltage electrical apparatus technical field
Background technology
Vacuum switch tube is a kind of electric equipment that is used to control and protect electric power system, its closure through two electrode contacts of control in the vacuum switch tube, separates the pass of realizing circuital current and closes and break off, thereby reach the purpose of control electric power system.Vacuum switch tube is the core parts of vacuum switch; It is through being sealed in the contact control in the vacuum tank, the device of extinguish arcs; With respect to the switching tube that adopts air or SF6 gas as dielectric; Its fracture distance can be dwindled the volume of switching tube, and avoid SF6 gas to environment damage less than 1/10th of air switch.
Two common station vacuum switch tubes can only be realized closing a floodgate and isolation features at present, and the load ground connection as after must will cutting off the power supply then also need connect independent earthed switch.Like this, the volume of whole switch cabinet can be bigger, and cost is also than higher.A kind of three-station vacuum arc extinguish chamber for isolated grounding is disclosed among the Chinese patent document CN101819904A; It is through being provided with the position of three electrode contacts; Utilize fixed contact, moving insulating contact and moving grounding contact to realize three station conversion; Be that fixed contact and moving insulating contact constitute the conversion that first sets of contacts realizes combined floodgate and isolation features, static ground contact and the moving grounding contact synchronous with moving insulating contact constitute the conversion that second sets of contacts realizes isolation and grounding function.This three stations vacuum switch tube can be realized combined floodgate, isolation and grounding function, but the radome of its isolation fracture is placed apart, effectively shielded arc; Install the employing end; There is not supporting construction around the ground connection flange; When float electrode during to grounding electrode motion and final reliable contact, the ground connection flange can bear bigger impulsive force and final pressure, the commissure of sealing ring and insulation shell in the middle of these power can be delivered to; Thereby the sealing of butt welded seam possibly produce harmful effect, influences the useful life of product.
The utility model content
The purpose of the utility model is to provide a kind of three station vacuum switch tubes, and it has the function of combined floodgate, isolation and ground connection, has improved the arc shield effect and the structural strength of vacuum switch tube simultaneously, improves reliability of products height and useful life.
The purpose of the utility model is to realize through following technical scheme:
A kind of three station vacuum switch tubes comprise insulation crust, quiet end conducting rod, moved end conducting rod and ground connection flange, and quiet end conducting rod connects with the high pressure inlet wire, and the end is equipped with fixed contact; The moved end conducting rod is used to connect electrical load, and it is positioned at the inner top upper and lower surface of vacuum switch tube moving insulating contact and moving grounding contact are set respectively; Ground connection flange top is provided with the static ground contact, and conducting rod top, said moved end is equipped with said moving insulating contact and fixed contact are formed the radome of going along with sb. to guard him, and is used for the fracture arc shield and can follows moved end conducting rod motion.
The middle end cap that connects said ground connection flange and insulation crust has interior receipts formula depression, and the installation that is used for switch framework connects.
Said radome is tubular, and its upper surface has inside crimping and is fixed on conducting rod end, moved end.
Said fixed contact, moving insulating contact, moving grounding contact, static ground contact mounting means all adopt soldering to connect.
Said fixed contact, moving insulating contact, moving grounding contact, static ground contact are processed by copper tungsten based alloy or copper chromium alloy.
Said moved end conducting rod passes the middle ground contact, and intermediate space can be born enough voltage requests.
The said three station vacuum switch tubes of the utility model can be realized combined floodgate, isolation and ground connection three station conversion; Radome is fixed on the conducting rod of moved end; The motion of follower ends conducting rod; Whole process is wrapped in isolation fracture, can play good shielded arc effect and simple in structure, can farthest reduce product height; The middle end cap of receipts formula is fixed on ground connection flange bottom in adopting; Can make the switch framework fixture be embedded into middle end cap recess, thereby can well support the ground connection flange, end cap and insulation shell commissure are stressed in the middle of avoiding; Improve its structural strength, improve reliability of products and useful life.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of the said three station vacuum switch tube "on" positions of the utility model;
Fig. 2 is the structural representation of the said three station vacuum switch tube isolations of the utility model;
Fig. 3 is the structural representation of the said three station vacuum switch tube ground states of the utility model.
Among the figure:
1, insulation crust; 2, quiet end conducting rod; 3, fixed contact; 4, moving insulating contact; 5, moving grounding contact; 6, static ground contact; 7, ground connection flange; 8, middle end cap; 9, moved end conducting rod; 10, radome.
Embodiment
Shown in Fig. 1 to 3; Provided the structure chart of a specific embodiment of the said three station vacuum switch tubes of the utility model; Comprise insulation crust 1, quiet end conducting rod 2, moved end conducting rod 9 and ground connection flange 7, quiet end conducting rod 2 connects with the high pressure inlet wire, and the end is equipped with fixed contact 3; Moved end conducting rod 9 is used to connect electrical load, and its top is provided with moving insulating contact 4, and the bottom is provided with moving grounding contact 5; Ground connection flange 7 tops are provided with static ground contact 6, and conducting rod 9 tops, said moved end are equipped with said moving insulating contact 4 is formed the radome 10 of going along with sb. to guard him, and radome 10 is tubular; Its upper surface has inside crimping; The employing stainless steel material is processed, and is used for the fracture arc shield and can follows 9 motions of moved end conducting rod, can whole process be wrapped in isolation fracture; Good shielded arc effect and simple in structure can be played, product height can be farthest reduced.
When moved end conducting rod 9 moves downward when carrying out landing operation; When moving grounding contact 5 reliably contacts with the 6 final formation of static ground contact; The ground connection flange can bear bigger impulsive force and final pressure; The commissure of end cap 8 and insulation crust 1 in the middle of these power can be delivered to, thus the sealing of butt welded seam possibly produce harmful effect.For reducing the impact that mechanism action causes vacuum tube; Receipts formula depression 11 in the middle end cap 8 that connects ground connection flange 7 and insulation crust 1 is provided with; The installation that is used for switch framework connects; Can make the fixture that is provided with on the framework be embedded into depression 11 places of middle end cap 8, thereby can well support the ground connection flange, end cap and insulation shell commissure are stressed in the middle of avoiding.
Fixed contact 3, moving insulating contact 4, moving grounding contact 5, static ground contact 6 mounting meanss all adopt soldering to connect, and are processed by copper tungsten based alloy or copper chromium alloy, and arc ablation resistance and resistance fusion welding can be better.
Moved end conducting rod 9 passes ground connection flange 7, the proof voltage level that standard-required should be able to be born in the gap of itself and ground connection flange 7 endoporus.
During work, as shown in Figure 1, said fixed contact 3 contacts with moving insulating contact 4, realizes closing function, and vacuum switch tube is in "on" position.
As shown in Figure 2, said moved end conducting rod 9 moves downward, and when the moving insulating contact 4 of drive is separated to certain distance with fixed contact 3, realizes isolation features, and vacuum switch tube is in isolation.
As shown in Figure 3, said moved end conducting rod 9 continues to move downward, and when the moving grounding contact 5 of drive contacts with static ground contact 6, has realized grounding function, and vacuum switch tube is in ground state.
The said three station vacuum switch tubes of the utility model have the function of combined floodgate, isolation and ground connection, have improved the arc shield effect and the structural strength of vacuum switch tube simultaneously, have improved reliability of products and useful life.
Claims (6)
1. a station vacuum switch tube comprises insulation crust, quiet end conducting rod, moved end conducting rod and ground connection flange, and quiet end conducting rod connects with the high pressure inlet wire, and the end is equipped with fixed contact; The moved end conducting rod is used to connect electrical load, and it is positioned at the inner top upper and lower surface of vacuum switch tube moving insulating contact and moving grounding contact are set respectively; Ground connection flange top is provided with the static ground contact, it is characterized in that: conducting rod top, said moved end is equipped with said moving insulating contact and fixed contact is formed the radome of going along with sb. to guard him, and is used for the fracture arc shield and can follows moved end conducting rod motion.
2. three station vacuum switch tubes according to claim 1 is characterized in that: the middle end cap that connects said ground connection flange and insulation crust has interior receipts formula depression, and the installation that is used for switch framework connects.
3. any three stations vacuum switch tube according to claim 1 and 2, it is characterized in that: said radome is tubular, and its upper surface has inside crimping and is fixed on conducting rod end, moved end.
4. any three stations vacuum switch tube according to claim 1 and 2 is characterized in that: said fixed contact, moving insulating contact, moving grounding contact, static ground contact mounting means all adopt soldering to connect.
5. any three stations vacuum switch tube according to claim 1 and 2 is characterized in that: said fixed contact, moving insulating contact, moving grounding contact, static ground contact are processed by copper tungsten based alloy or copper chromium alloy.
6. three station vacuum switch tubes according to claim 3 is characterized in that: said moved end conducting rod passes the middle ground contact, and intermediate space can be born enough voltage requests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120263308U CN202142468U (en) | 2011-07-25 | 2011-07-25 | Three station vacuum switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120263308U CN202142468U (en) | 2011-07-25 | 2011-07-25 | Three station vacuum switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202142468U true CN202142468U (en) | 2012-02-08 |
Family
ID=45553514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120263308U Expired - Fee Related CN202142468U (en) | 2011-07-25 | 2011-07-25 | Three station vacuum switch tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202142468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
-
2011
- 2011-07-25 CN CN201120263308U patent/CN202142468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
| CN108133862B (en) * | 2018-01-19 | 2024-03-26 | 西安交通大学 | Interlocking vacuum switch and series compensation type current limiting device and method applied by same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20200725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |