CN2430779Y - Start speed breaking device of vacuum breaker - Google Patents
Start speed breaking device of vacuum breaker Download PDFInfo
- Publication number
- CN2430779Y CN2430779Y CN 00239290 CN00239290U CN2430779Y CN 2430779 Y CN2430779 Y CN 2430779Y CN 00239290 CN00239290 CN 00239290 CN 00239290 U CN00239290 U CN 00239290U CN 2430779 Y CN2430779 Y CN 2430779Y
- Authority
- CN
- China
- Prior art keywords
- contact
- base
- fixed
- housing
- conducting rod
- Prior art date
- 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 start speed breaking device of a vacuum breaker. A pressing cover is fixed at the top of a casing with a bolt cushion block. The lower part of the pressing cover is provided with a contact pressure spring, wherein, the lower end of which is fixed on a base for support with a bolt and a spring washer. A conductive rod of a static contact contacts the lower end of the base. A moving contact contacts the static contact through a plane surface. The structure leads the pressure spring and a common roll engaging system to be separated. A start breaking speed can be improved, which leads V< 0 > to be more than 0. The performance for roll engaging and breaking can be improved.
Description
The utility model relates to a kind of contact of vacuum circuit-breaker, especially refers to opening velocity V
0＞0 device belongs to the technical field of breaker open operation mechanism.
Existing vacuum circuit-breaker, the compression spring of its switching-on mechanism all are contained in above the right-hand member of insulating bar, and its moving contact is in the curved end of a shaft-like direct insertion fixed contact, and certain depth is arranged.Dynamic/static contact separates during separating brake, its initial separating rate V
0Little, ability is subjected to it to influence right arc time instability, and these have all influenced the performance and the life-span of vacuum circuit-breaker.
The purpose of this utility model is the starting velocity switching-off device that a kind of vacuum circuit-breaker will be provided, and it can overcome above-mentioned shortcoming.The shape of dynamic/static contact changes the contact on plane into, and the position that compression spring is contained in dynamic/static contact top makes and produces certain contact pressure and improve its performance in addition.
The purpose of this utility model is to realize like this; Gland (6) is fixed in housing (9) top with bolt (7), cushion block (8), a contact pressure spring (1) is put in the gland below, its underpart is fixed in base (12) by bolt (10), spring pad (11) and is supported, the top of base and housing (9) the bottom segment distance δ of being separated by; Housing (9) right side joins with soft connection (2) and base (12) bottom again, and the base lower end contacts with the conducting rod that passes vacuum interrupter (3) (13), and the conducting rod lower end is connected with a fixed contact (4), and moving contact (5) also joins with conducting rod (14).Each contacts with each other dynamic/static contact with a dish type contact plane (14) (18).
Fig. 1. initial switching-off device schematic diagram
Fig. 2. original dynamic/static contact combination schematic diagram
Fig. 3. the dynamic/static contact schematic diagram of planar shaped contact
Fig. 4. the vacuum circuit-breaker schematic diagram
Fig. 5. combined floodgate leverage schematic diagram
Now in conjunction with the accompanying drawings the structure of the starting velocity switching-off device of vacuum circuit-breaker is described in detail:
By Fig. 1, gland (6) is fixed in housing (9) top with bolt (7), cushion block (8), a contact pressure spring (1) is put in gland (6) below, its underpart is fixed in base (12) by a bolt (10), spring pad (11) and is supported, the be separated by spacing of a segment distance δ of the top of base and housing (9) bottom can guarantee the tightness of spring.The right side of this housing (9) joins with soft connection (2) and base (12) bottom again, this base (12) lower end contacts with the conducting rod that passes vacuum interrupter (3) (13), conducting rod (13) lower end connects a fixed contact (4), and moving contact (5) also links to each other with conducting rod (14).Moving contact (5) also contacts with fixed contact (4).
By Fig. 2, the end of original fixed contact (15) becomes song to the inboard and protrudes out, and moving contact (16) is shaft-like, just in time inserts in the fixed contact (14), and dynamic/static contact during separating brake (15) (16) is disconnected from each other, opening velocity V
0＞0.
By Fig. 3, improved moving contact is that moving contact is connected with a dish type contact plane (18) with conducting rod (17), and fixed contact also is connected with a dish type contact plane (19) with conducting rod (20), initial opening velocity V when making separating brake owing to the contact that changes the plane into
0=0, obvious V
0=0 for improving just component velocity is disadvantageous.
By Fig. 4, the insulator of vacuum circuit-breaker (porcelain vase) (21) with] shape support (22) joins, one end of this support is fixed in above the separating brake ancillary chamber (23), wherein tilting one has the auxiliary connecting rod (24) of secondary spring, this connecting rod lower end is connected with rest pad (25), switch spindle (27) is contained on the contiguous block (26), an insulating bar (28) is fixed in the contiguous block bottom, the right-hand member of bar is connected (Fig. 5) with the on/off switch connecting rod, the on/off switch connecting rod is positioned at connecting rod chamber (29), top, connecting rod chamber (29) is connected with brake separating mechanism chamber (30), the housing of contact head compression spring chamber (31) more above, insulator (21) right-hand member is connected with housing (31), and another insulator (32) right-hand member is connected with connecting rod chamber (29), and left end is connected with the support (32) that is fixed in separating brake ancillary chamber (23) right flank.This initial switching-off device just in time is positioned at the position of Fig. 4 label II.
By Fig. 5, moving contact conducting rod (14) below the combined floodgate leverage vacuum interrupter (3) is connected with on/off switch connecting rod (35), this connecting rod (35) is equipped with separating brake main spring (35), and is contained in the slotted hole of insulating bar (28) right-hand member with bearing pin again, and insulating bar (28) left end is hinged with pair bar (25) again; Switch spindle (27) is contained in a pair bar (25) and is connected with pole (26), and these pole (26) one ends are connected with push and pull system (36) again, pays bar (25) top auxiliary connecting rod (24) is housed.
In Fig. 1, the compression spring of contact is by the position of transmission, system normal pressure power spring often is placed in an end (Fig. 5) of insulating bar, vary to position shown in Figure 1, compression spring is not only spun off from the separating brake kinematic system, and remove this contact pressure spring with powerful active force, be approximately 2500～3200N in case keep combined floodgate, make vacuum interrupter (3) move downward δ distance and stop, make moving contact (5) when separating brake main spring (34) spurs, obtain V
0=N
0, this takes often favourable for improving first component velocity.
Compared with prior art, the start speed breaking device of vacuum circuit breaker has following advantages: 1. moving conductive rod contacts with static contact when closing a floodgate, and on move δ apart from (being about 3～4mm), compression pressure Spring produces the contact of certain dynamic/static contact. 2. the contact face is plane contact, the V of initial separating brake0＞0. 3. compression spring is contained in fixed contact conducting rod top, and it separates with the separating brake sports system, favourable and raising Initial opening velocity.
Claims (2)
1. the starting velocity switching-off device of a vacuum circuit-breaker, it is characterized in that: gland (6) is fixed in housing (9) top with bolt (7), cushion block (8), a contact pressure spring (1) is put in the gland below, its underpart is fixed in base (12) by bolt (10), spring pad (11) and is supported, the top of base and housing (9) the bottom segment distance δ of being separated by; Housing (9) right side joins with soft connection (2) and base (12) bottom again, and the base lower end contacts with the conducting rod that passes vacuum interrupter (3) (13), and the conducting rod lower end is connected with a fixed contact (4), and moving contact (5) also joins with conducting rod (14).
2. device according to claim 1 is characterized in that: each contacts with each other dynamic/static contact with a dish type contact plane (14), (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239290 CN2430779Y (en) | 2000-06-20 | 2000-06-20 | Start speed breaking device of vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239290 CN2430779Y (en) | 2000-06-20 | 2000-06-20 | Start speed breaking device of vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2430779Y true CN2430779Y (en) | 2001-05-16 |
Family
ID=33600166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00239290 Expired - Fee Related CN2430779Y (en) | 2000-06-20 | 2000-06-20 | Start speed breaking device of vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2430779Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184795A (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Fast vacuum circuit breaker used for protecting high-power power electronic converter |
| CN101871946B (en) * | 2009-04-21 | 2012-05-30 | 西安秦骊成套电器有限公司 | Testing device of opening-closing speed of high-voltage circuit breaker |
| CN111029182A (en) * | 2019-12-27 | 2020-04-17 | 国网山西省电力公司电力科学研究院 | Method for improving opening speed of breaker model |
| CN111025140A (en) * | 2019-12-27 | 2020-04-17 | 国网山西省电力公司电力科学研究院 | Method for improving opening speed of breaker model based on spring assistance |
-
2000
- 2000-06-20 CN CN 00239290 patent/CN2430779Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871946B (en) * | 2009-04-21 | 2012-05-30 | 西安秦骊成套电器有限公司 | Testing device of opening-closing speed of high-voltage circuit breaker |
| CN102184795A (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Fast vacuum circuit breaker used for protecting high-power power electronic converter |
| CN111029182A (en) * | 2019-12-27 | 2020-04-17 | 国网山西省电力公司电力科学研究院 | Method for improving opening speed of breaker model |
| CN111025140A (en) * | 2019-12-27 | 2020-04-17 | 国网山西省电力公司电力科学研究院 | Method for improving opening speed of breaker model based on spring assistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |