CN110571089B - Disconnecting switch for distribution network protection - Google Patents
Disconnecting switch for distribution network protection Download PDFInfo
- Publication number
- CN110571089B CN110571089B CN201910828681.3A CN201910828681A CN110571089B CN 110571089 B CN110571089 B CN 110571089B CN 201910828681 A CN201910828681 A CN 201910828681A CN 110571089 B CN110571089 B CN 110571089B
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- contact seat
- hole
- distribution network
- movable contact
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
Abstract
The application discloses an isolating switch for distribution network protection, which comprises a base, a connecting rod, and a moving contact and a fixed contact which are arranged on the base, wherein the top end of the moving contact is provided with a moving terminal connecting plate and a moving contact seat, and the side surface of the moving contact seat is provided with a connecting rod through hole; the top end of the static contact is provided with a static terminal connecting plate and a static contact seat, and the side surface of the static contact seat is provided with a connecting rod blind hole; the connecting rod penetrates through the connecting rod through hole and then is inserted into the connecting rod blind hole to be fixed, and the movable contact seat is provided with a self-locking mechanism capable of fixing the connecting rod. According to the application, the connecting rod passes through the connecting rod through hole on the movable contact seat and then is inserted into the connecting rod blind hole on the static contact seat, and the self-locking mechanism fixes the connecting rod, so that the stability of the connection between the static contact seat and the movable contact seat is ensured, and the anti-wind capability of the whole device is improved. Meanwhile, as the movable contact seat is connected with the fixed contact seat through the connecting rod, the contact area is greatly increased, the heat loss can be effectively reduced, and the service life of the whole device is ensured.
Description
Technical Field
The application relates to an isolating switch in the technical field of electricity, in particular to an isolating switch for distribution network protection.
Background
The 10KV isolating switch is used for switching on or isolating a power supply under the condition that a 10KV distribution network line has voltage and no load. Because of the simple structure and convenient operation, the utility model is widely used as a main element in the distribution network circuit, the most common use is currently the HGW9-12 (W)/630 type 10KV isolating switch.
The existing disconnecting switch is connected with the movable contact and the fixed contact through the metal sheet in a clamping manner, the connection mode is stable under the general condition, but in coastal weather, the connection is unstable, particularly the whole device shakes under the action of strong wind, the metal sheet is in continuous shaking contact with the movable contact and the fixed contact, the using effect of the disconnecting switch is affected, and a disconnecting switch for protecting a distribution network with stable connection is needed to be used for solving the problems.
Disclosure of Invention
The application aims to provide an isolating switch for distribution network protection, which improves the stability of connection of a static contact seat and a moving contact seat.
The application solves the technical problems as follows: the isolating switch for the distribution network protection comprises a base, a connecting rod, and a moving contact and a fixed contact which are arranged on the base, wherein a moving terminal connecting plate and a moving contact seat are arranged at the top end of the moving contact, and a connecting rod through hole is formed in the side surface of the moving contact seat; the top end of the static contact is provided with a static terminal connecting plate and a static contact seat, and the side surface of the static contact seat is provided with a connecting rod blind hole; the connecting rod penetrates through the connecting rod through hole and then is inserted into the connecting rod blind hole to be fixed, and the movable contact seat is provided with a self-locking mechanism capable of fixing the connecting rod.
As a further improvement of the technical scheme, the top surface of the movable contact seat is provided with a bayonet lock through hole, the self-locking mechanism is arranged on the top surface of the movable contact seat and comprises a cylinder body with a bottom opening and a lifting plate capable of lifting in the cylinder body, the top surface of the lifting plate is connected with the inner end surface of the cylinder body through a first elastic piece, the bottom surface of the lifting plate is provided with a bayonet lock, the first end of the connecting rod is provided with a bayonet lock hole, and the bayonet lock is inserted into the bayonet lock through hole after penetrating through the bayonet lock through hole.
As a further improvement of the technical scheme, two sliding grooves are formed in the side face of the cylinder body, sliding rods capable of sliding along the sliding grooves are arranged on two sides of the lifting plate, and the sliding rods extend out of the cylinder body.
As a further improvement of the technical scheme, the bayonet lock comprises a rigid pin shaft core, and a damping sleeve is wrapped on the outer side of the pin shaft core.
As a further improvement of the technical scheme, the second end of the connecting rod is provided with at least one locking groove, at least one second elastic piece is arranged in the connecting rod blind hole, and the second elastic piece is matched with the locking groove.
As a further improvement of the technical scheme, the longitudinal section of the locking groove is circular arc, the second elastic piece is a metal circular ring half pipe, and the axial direction of the metal circular ring half pipe is perpendicular to the insertion direction of the connecting rod.
As a further improvement of the technical scheme, at least one static binding post is arranged on the static terminal connecting plate, and at least one movable binding post is arranged on the movable terminal connecting plate.
As a further improvement of the technical scheme, at least two fixing frames are arranged at the lower part of the base, and at least one mounting hole is respectively arranged on each fixing frame.
As a further improvement of the technical scheme, the base is U-shaped groove-shaped, two inner side surfaces of the base are respectively provided with symmetrical sliding rails, and the fixing frames are movably arranged on the sliding rails.
As a further improvement of the technical scheme, a plurality of pin holes are formed in the inner top surface of the base, the longitudinal section of the fixing frame is U-shaped, a longitudinal threaded through hole is formed in the top of the fixing frame, and a screw penetrates through the threaded through hole and then is inserted into the pin holes to be fixed.
The beneficial effects of the application are as follows: according to the application, the connecting rod passes through the connecting rod through hole on the movable contact seat and then is inserted into the connecting rod blind hole on the static contact seat, and the self-locking mechanism fixes the connecting rod, so that the stability of the connection between the static contact seat and the movable contact seat is ensured, and the anti-wind capability of the whole device is improved. Meanwhile, as the movable contact seat is connected with the fixed contact seat through the connecting rod, the contact area is greatly increased, the heat loss can be effectively reduced, and the service life of the whole device is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the application, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic view of a structure in a first embodiment of the present application;
FIG. 2 is a schematic structural view of the self-locking structure of the present application;
FIG. 3 is a cross-sectional view of a bayonet of the present application;
FIG. 4 is a schematic view of a base structure in a second embodiment of the present application;
fig. 5 is a schematic view showing a base structure in the third embodiment of the present application.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present application. It is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present application based on the embodiments of the present application. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation.
Example 1
Referring to fig. 1 to 3, an isolating switch for protecting a distribution network includes: the movable contact comprises a base 1, a connecting rod 11, a movable contact 2 and a fixed contact 3 which are arranged on the base 1, wherein a movable terminal connecting plate 8 and a movable contact seat 10 are arranged at the top end of the movable contact 2, and a connecting rod through hole is formed in the side surface of the movable contact seat 10; the top end of the fixed contact 3 is provided with a fixed terminal connecting plate 4 and a fixed contact seat 6, and the side surface of the fixed contact seat 6 is provided with a connecting rod blind hole 7; the connecting rod 11 penetrates through the connecting rod through hole and then is inserted into the connecting rod blind hole 7 to be fixed, and the movable contact seat 10 is provided with a self-locking mechanism 14 capable of fixing the connecting rod 11. Preferably, the movable contact holder 10 is a circular tube sleeve structure. After passing through the connecting rod through hole on the movable contact seat 10, the connecting rod 11 is inserted into the connecting rod blind hole 7 of the fixed contact seat 6, and the self-locking mechanism 14 fixes the position of the connecting rod 11 at the moment, so that the connecting rod 11 is firmly limited between the fixed contact seat 6 and the movable contact seat 10, thereby effectively ensuring the connection stability of the fixed contact seat 6 and the movable contact seat 10 and improving the wind resistance of the whole device. Meanwhile, as the fixed contact seat 6 and the movable contact seat 10 are connected through the rod, the contact area is greatly increased, the heat loss can be effectively reduced, and the service life of the whole device is prolonged.
Further as a preferred embodiment, the top surface of the movable contact base 10 is provided with a bayonet through hole 13, the self-locking mechanism 14 is mounted on the top surface of the movable contact base 10, the self-locking mechanism 14 comprises a cylinder 141 with a bottom opening and a lifting plate 143 capable of lifting in the cylinder 141, two sliding grooves 142 are arranged on the side surface of the cylinder 141, two sliding rods 144 capable of sliding along the sliding grooves 142 are arranged on two sides of the lifting plate 143, and the sliding rods 144 extend out of the cylinder 141. The top surface of the lifting plate 143 is connected with the inner end surface of the cylinder 141 through a first elastic member 145, and the bottom surface of the lifting plate 143 is provided with a bayonet 146. Preferably, the first elastic member 145 may be a spring. The lifting plate 143 compresses the first elastic member 145 by lifting the slide bar 144 upward, and at this time, the connecting rod 11 can be smoothly penetrated through the connecting rod through hole. The first end of the connecting rod 11 is provided with a clamping hole 12, the second end of the connecting rod 11 is inserted into the static contact seat 6, the sliding rod 144 is released, and the lifting plate 143 enables the clamping pin 146 to penetrate through the clamping pin through hole 13 and then be inserted into the clamping hole 12 to be fixed under the pressure of the spring. The clamping pin 146 is tightly propped against the clamping hole 12 of the connecting rod 11, so that the connecting rod 11 can be tightly contacted with the movable contact base 10.
Further as a preferred embodiment, referring to fig. 3, bayonet 146 includes a rigid pin core 1461, with a shock absorbing sleeve 1462 wrapped around the outside of pin core 1461. Preferably, the damping sleeve 1462 is made of rubber material, so that the impact force of the clamping pin 146 suddenly falling and being inserted into the clamping hole 12 can be effectively reduced by arranging the damping sleeve 1462, fatigue damage caused by continuous collision between the connecting rod 11 and the clamping pin 146 is avoided, and the service lives of the connecting rod 11 and the clamping pin 146 are ensured.
Further as a preferred embodiment, the second end of the connecting rod 11 is provided with at least one locking groove 111, and the connecting rod blind hole 7 is internally provided with at least one second elastic piece 71, and the second elastic piece 71 is matched with the locking groove 111. Preferably, the top surface and the bottom surface of the connecting rod 11 are respectively provided with a locking groove 111, the longitudinal section of the locking groove 111 is arc-shaped, and the depth is less than 3mm; the insertion direction of the locking groove 111 is perpendicular. The second elastic members 71 are metal ring half tubes, the axial direction of the metal ring half tubes is perpendicular to the insertion direction of the connecting rod 11, the metal ring half tubes can be copper parts, the two second elastic members 71 are respectively clamped into the locking grooves 111, and the second elastic members 71 are in interference fit with the locking grooves 111. The second elastic piece 71 is matched with the locking groove 111, so that the second end of the connecting rod 11 can be fixed in the connecting rod blind hole 7 and is not easy to separate; and the tight connection of the connecting rod 11 with the second elastic member 71 ensures the stability of the power transmission.
Further as a preferred embodiment, at least two static binding posts 5 are arranged on the static terminal connecting plate 4, and the two static binding posts 5 are arranged on the left side of the static contact seat 6 in parallel. Correspondingly, two movable binding posts 9 are arranged on the movable terminal connecting plate 8, and the two movable binding posts 9 are arranged on the right side of the movable contact seat 10 in parallel.
Example two
On the basis of the first embodiment, referring to fig. 4, at least two fixing frames 102 are provided at the lower portion of the base 1, and at least one mounting hole 103 is provided on each fixing frame 102. The base 1 is in an inverted U-shaped groove shape, two inner side surfaces of the base 1 are respectively provided with symmetrical sliding rails 101, and the fixing frames 102 are movably arranged on the sliding rails 101. The outside of mount 102 is installed on slide rail 101, through sliding mount 102, can adjust the interval between two mounts 102 wantonly to satisfy different installation environment.
Example III
On the basis of the second embodiment, referring to fig. 5, a plurality of pin holes are formed on the inner top surface of the base 1, the longitudinal section of the fixing frame 102 is in a U shape, and a longitudinal threaded through hole is formed on the top of the fixing frame. After the fixing frame 102 is moved to a proper position, the screw 104 is inserted into the pin hole after penetrating through the threaded through hole, and the screw 104 can be fixed in the fixing frame 102 and the base 1 because the screw 104 is in threaded connection with the threaded through hole on the fixing frame 102.
The working principle of the application is as follows: lifting plate 143 in self-locking mechanism 14 is lifted, connecting rod 11 passes the connecting rod through-hole in movable contact seat 10 to insert in connecting rod blind hole 7, release lifting plate 143 at this moment, first elastic component 145 roof pressure lifting plate 143 descends, bayonet lock 146 inserts in the draw-in hole 12 of connecting rod 11, thereby pin connecting rod 11, firmly inject connecting rod 11 between fixed contact seat 6 and movable contact seat 10, thereby guarantee the stability that fixed contact seat 6 and movable contact seat 10 are connected effectively, improve the anti big wind energy of whole device. In addition, the fixing frames 102 are slid, the distance between the two fixing frames 102 is adjusted, and the relative positions of the fixing frames 102 and the base 1 are fixed through screws, so that the base 1 is installed.
While the preferred embodiments of the present application have been illustrated and described, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (12)
1. An isolating switch for distribution network protection, which is characterized by comprising:
a base (1);
the movable contact (2) is arranged on the base (1), a movable terminal connecting plate (8) and a movable contact seat (10) are arranged at the top end of the movable contact (2), and a connecting rod through hole is formed in the side face of the movable contact seat (10);
the fixed contact (3) is arranged on the base (1), a fixed terminal connecting plate (4) and a fixed contact seat (6) are arranged at the top end of the fixed contact (3), and a connecting rod blind hole (7) is formed in the side face of the fixed contact seat (6);
the connecting rod (11) penetrates through the connecting rod through hole and then is inserted into the connecting rod blind hole (7) to be fixed, and the movable contact seat (10) is provided with a self-locking mechanism (14) capable of fixing the connecting rod (11);
the automatic locking device comprises a movable contact seat (10), wherein a clamping pin through hole (13) is formed in the top surface of the movable contact seat (10), a self-locking mechanism (14) is arranged on the top surface of the movable contact seat (10), the self-locking mechanism (14) comprises a cylinder body (141) with a bottom opening and a lifting plate (143) capable of lifting in the cylinder body (141), the top surface of the lifting plate (143) is connected with the inner end surface of the cylinder body (141) through a first elastic piece (145), the first elastic piece (145) is a spring, a clamping pin (146) is arranged on the bottom surface of the lifting plate (143), a clamping hole (12) is formed in the first end of a connecting rod (11), and the clamping pin (146) penetrates through the clamping pin through hole (13) and then is inserted into the clamping hole (12).
2. The distribution network protection disconnecting switch according to claim 1, wherein: the movable contact seat (10) is of a circular tube sleeve structure.
3. The distribution network protection disconnecting switch according to claim 1, wherein: two sliding grooves (142) are formed in the side face of the cylinder body (141), sliding rods (144) capable of sliding along the sliding grooves (142) are arranged on two sides of the lifting plate (143), and the sliding rods (144) extend out of the cylinder body (141).
4. The distribution network protection disconnecting switch according to claim 1, wherein: the bayonet lock (146) includes rigid round pin axle core (1461), the outside of round pin axle core (1461) parcel has shock attenuation cover (1462).
5. The distribution network protection disconnecting switch according to claim 1, wherein: the second end of the connecting rod (11) is provided with at least one locking groove (111), the connecting rod blind hole (7) is internally provided with at least one second elastic piece (71), and the second elastic piece (71) is matched with the locking groove (111).
6. The distribution network protective disconnect switch of claim 5, wherein: the longitudinal section of the locking groove (111) is circular arc, the second elastic piece (71) is a metal ring half pipe, and the axial direction of the metal ring half pipe is perpendicular to the insertion direction of the connecting rod (11).
7. The distribution network protection disconnecting switch according to claim 1, wherein: the static terminal connecting plate (4) is provided with at least one static binding post (5), and the movable terminal connecting plate (8) is provided with at least one movable binding post (9).
8. The distribution network protection disconnecting switch according to claim 1, wherein: at least two fixing frames (102) are arranged at the lower part of the base (1), and at least one mounting hole (103) is respectively arranged on each fixing frame (102).
9. The distribution network protective barrier switch of claim 8, wherein: the base (1) is U-shaped groove-shaped, two symmetrical sliding rails (101) are respectively arranged on two inner side surfaces of the base (1), and the fixing frames are movably arranged on the sliding rails (101).
10. The distribution network protective barrier switch of claim 9, wherein: the base is characterized in that a plurality of pin holes are formed in the inner top surface of the base (1), the longitudinal section of the fixing frame is U-shaped, a longitudinal threaded through hole is formed in the top of the fixing frame, and a screw (104) penetrates through the threaded through hole and then is inserted into the pin holes to be fixed.
11. The distribution network protective disconnect switch of claim 4, wherein: the damping sleeve (1462) is made of rubber materials.
12. The distribution network protective disconnect switch of claim 6, wherein: the metal ring half pipe is a copper product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828681.3A CN110571089B (en) | 2019-09-03 | 2019-09-03 | Disconnecting switch for distribution network protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828681.3A CN110571089B (en) | 2019-09-03 | 2019-09-03 | Disconnecting switch for distribution network protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110571089A CN110571089A (en) | 2019-12-13 |
| CN110571089B true CN110571089B (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828681.3A Active CN110571089B (en) | 2019-09-03 | 2019-09-03 | Disconnecting switch for distribution network protection |
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| Country | Link |
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| CN (1) | CN110571089B (en) |
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| CN206850304U (en) * | 2017-06-30 | 2018-01-05 | 中国西电电气股份有限公司 | A kind of installation of GIS device main bus-bar slider and provision for disengagement |
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| CN208797191U (en) * | 2018-09-14 | 2019-04-26 | 广州艾博电力设计院有限公司 | A kind of attachment device for preventing cable terminal from overheating |
| CN209087678U (en) * | 2018-10-26 | 2019-07-09 | 武汉倍诺德开关有限公司 | A kind of novel manual disconnecting switch with ground |
| CN210778379U (en) * | 2019-09-03 | 2020-06-16 | 广东艾博电力设计院(集团)有限公司 | Distribution network protection isolating switch |
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| JP2000243193A (en) * | 1999-02-16 | 2000-09-08 | Takaoka Electric Mfg Co Ltd | Lock mechanism of operating device for switch |
| CN201383458Y (en) * | 2009-04-03 | 2010-01-13 | 山东泰开隔离开关有限公司 | Bar-type self-operated conductive structure for high-voltage disconnecting switch |
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| CN208271795U (en) * | 2018-05-09 | 2018-12-21 | 廊坊北熔电气股份有限公司 | A kind of disconnecting switch facilitating installation |
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| CN110571089A (en) | 2019-12-13 |
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Address after: 510062 room 2207, East Tower, No. 753, Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Applicant after: Guangdong Aibo Electric Power Design Institute (Group) Co.,Ltd. Address before: 510062 room 2207, East Tower, No. 753, Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU A&B ELECTRIC POWER DESIGNING INSTITUTE CO.,LTD. |
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