CN112331518A - Load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post - Google Patents
Load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post Download PDFInfo
- Publication number
- CN112331518A CN112331518A CN202011260953.3A CN202011260953A CN112331518A CN 112331518 A CN112331518 A CN 112331518A CN 202011260953 A CN202011260953 A CN 202011260953A CN 112331518 A CN112331518 A CN 112331518A
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- Prior art keywords
- pgs
- spring
- load switch
- brake
- switch
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 34
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 30
- 238000004146 energy storage Methods 0.000 title claims description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 2
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- 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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
-
- 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
- H01H33/02—Details
- H01H33/42—Driving mechanisms
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, and belongs to the technical field of power generation, power transformation or power distribution. The PGS pole-mounted load switch comprises an elastic operation mechanism and an arc extinguish chamber cross-sliding mechanism which are coaxially mounted on a main shaft, wherein the elastic operation mechanism is connected with a switch-on/switch-off mechanism component through a connecting rod, the elastic operation mechanism is improved aiming at the self characteristic of the existing PGS pole-mounted load switch, an output connecting lever of the elastic operation mechanism is connected with the switch-on/switch-off mechanism component through the connecting rod so as to realize the linkage of the elastic operation mechanism and the main shaft, a switch-off spring is additionally arranged in an active rotation space range, the pre-stored energy of the switch-off spring is realized through the rotation of the main shaft in the switch-on process, the PGS pole-mounted load switch has the capability of rapid switch-.
Description
Technical Field
The invention discloses a quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, and belongs to the technical field of power generation, power transformation or power distribution.
Background
Load switch on the PGS post has can divide and shut, cut off load current and certain overcurrent's ability, and compressed gas blows out electric arc when acting through the divide-shut brake, accomplishes the function of dividing and shutting, adopts SF6 as insulating medium, has actual fracture, can keep apart the distribution lines that breaks down automatically. The switch is provided with an electronic controller with the latest technology, and can realize manual operation, electric operation and remote operation. However, the conventional PGS products have the following disadvantages: (1) the opening and closing speed is slow, the opening and closing mechanism is a spring mechanism, the spring is driven to act by a handle, the action time of each single opening or single closing is more than 1s, and the requirement of quick opening and closing time is not met; (2) the energy storage function is not provided, namely, each single-division single-combination action is a coherent process of energy storage- > energy release- > action, the action is required to be carried out after energy storage, and the efficiency is low; (3) the device has no reclosing capability, and has no reclosing capability because the time of singly separating and singly combining each time is very long, thereby bringing inconvenience to electric power overhaul and fault removal. Aiming at the defects of the conventional PGS, the application aims to abandon the original spring mechanism and adopt the spring operation mechanism with the pre-energy storage function to realize the on-off function of the PGS column switch.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a quick on-off pre-stored energy type sulfur hexafluoride PGS pole upper load switch, the pre-stored energy function of a brake separating spring is realized by modifying the conventional PGS pole upper switch spring operating mechanism, the quick on-off of the PGS pole upper switch is realized, and the technical problems that the traditional PGS pole upper load switch is slow in on-off speed, cannot store energy in advance and does not have a reclosing function are solved.
The invention adopts the following technical scheme for realizing the aim of the invention:
a load switch on a fast on-off pre-stored energy type sulfur hexafluoride PGS column comprises an elastic operation mechanism and an arc extinguish chamber cross-sliding mechanism which are coaxially arranged on a main shaft, wherein the elastic operation mechanism is connected with an on-off mechanism component through a connecting rod;
when a load switch on the PGS column is switched on, the switching-on/off mechanism assembly compresses the spring operation mechanism through the connecting rod to realize pre-stored energy, and the arc extinguish chamber transverse moving mechanism pushes the arc extinguish chamber to move towards the switching-on direction;
when the load switch on the PGS column is opened, the spring operating mechanism releases energy storage and drives the connecting rod to push the opening and closing mechanism component to return to the position before closing, and the arc extinguish chamber transverse moving mechanism pulls the arc extinguish chamber to move towards the opening direction.
Further, in a load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post, the spring operation mechanism includes: the brake separating spring is sleeved on the brake separating spring shaft, one end of the brake separating spring shaft is fixed on the shell, the other end of the brake separating spring shaft is hinged with the brake separating spring connecting lever, the brake separating spring connecting lever is connected with the spindle key groove, the brake separating connecting lever is connected with the spindle key groove, one end of the connecting rod is hinged with the brake separating connecting lever, and the other end of the connecting rod is hinged with the brake separating mechanism component.
Further, in the quick on-off pre-stored energy type sulfur hexafluoride PGS pole load switch, the arc extinguish chamber transverse moving mechanism is a shifting fork arranged on the main shaft, and the head of the shifting fork slides in a groove preset on the arc extinguish chamber body.
Further, in the quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, the arc extinguish chamber is sleeved on the copper guide rod, and the bottom of the copper guide rod is padded with the annular buffer rubber pad.
Further, in the quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, an inflation inlet for flushing SF6 gas is formed in the rear portion of a PGS column upper load switch shell, and an inflation inlet for installing a barometer is formed in the lower portion of the PGS column upper load switch shell.
In the quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, a separating brake spring fixing plate is sleeved on a separating brake spring shaft, and one end of the separating brake spring shaft is arranged on the shell through the separating brake spring fixing plate.
In the fast on-off pre-stored energy sulfur hexafluoride PGS column load switch, the other end of the opening spring shaft is fixed on the opening spring crank arm through a shaft pin, one end of the connecting rod is connected with the on-off crank arm through a pin shaft, and the other end of the connecting rod is connected with the on-off mechanism component through a pin shaft.
In the quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch, the annular buffer rubber gasket is a rubber gasket with the fixed Shore hardness of 45-50 degrees.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) the utility model provides a self characteristics to load switch on current PGS post reforms transform its bullet and operates the mechanism, output connecting lever and the divide-shut brake mechanism subassembly that operate the mechanism through the connecting rod connection bullet are in order to realize the linkage of bullet and operating the mechanism and main shaft, and the separating brake spring has been add in initiative rotation space scope, main shaft rotation through the combined floodgate in-process realizes the pre-stored energy of separating brake spring, load switch and bullet operation mechanism cooperation are good on the PGS post after the improvement, and the deciliter characteristic satisfies the requirement, the separating brake time is within 40ms, the closing time is within 60ms, have the ability of quick deciliter, and have the pre-stored energy function, possess the function of reclosing simultaneously, can accomplish job task and maintenance task better.
(2) In order to avoid the situation of main loop breakdown possibly caused by brake-separating rebounding, the brake-separating buffer rubber pad is arranged at the bottom of the copper guide rod in a padded mode to absorb the redundant energy released by the brake-separating spring, and the requirement of rapid switch-on and switch-off of the switch is met within the safety range of the brake-separating rebounding.
Drawings
Fig. 1 is a cross-sectional view of a main circuit of a load switch on a sulfur hexafluoride PGS column in an open state.
Fig. 2 is an assembly view of a load switch mechanism housing on a sulfur hexafluoride PGS column as disclosed herein.
Fig. 3 is a perspective view of a housing of a sulfur hexafluoride PGS column load switch mechanism as disclosed herein.
Fig. 4 is an assembly view of a load switch primary circuit on a sulfur hexafluoride PGS column as disclosed herein.
Fig. 5 is an assembly view of a load switch opening spring assembly on a sulfur hexafluoride PGS column as disclosed in the present application.
The reference numbers in the figures illustrate: 1. the device comprises a sleeve, 2, a shell, 3, an arc extinguish chamber, 4, a static contact, 5, a main shaft, 6, a mechanism assembly, 7, an aviation plug connector, 8, a switching-off spring shaft, 9, a groove 10, a dynamic seal, 11, a switching-off spring crank arm, 12, a connecting rod, 13, a switching-off crank arm, 14, a switching-off spring, 15, a switching-off buffer rubber pad, 16, a gas pressure gauge, 17, a shifting fork, 18, a copper guide rod, 19, an inflation inlet, 20 and a switching-off spring fixing plate.
Detailed Description
The technical scheme of the invention is explained in detail in the following with reference to the attached drawings.
In order to adapt to an elastic operation mechanism and play the normal working level of the elastic operation mechanism on a load switch body, the transmission scheme of the load switch on a PGS column is redesigned, the elastic operation mechanism of the load switch on the ZW20 series PGS column is taken as a transformation object, aiming at the characteristics of the load switch on the PGS column, an output crank arm of the elastic operation mechanism and a main shaft of the switch body are connected through a connecting rod, a brake separating spring is added at a proper position in the motion range of the main shaft to meet the normal brake separating capacity, and the force of the brake separating spring and the force of the main spring of the elastic operation mechanism are adjustable.
The application discloses load switch on sulfur hexafluoride PGS post is as shown in fig. 1, 4, casing 2's both sides are provided with the sleeve pipe 1 of being connected with copper guide 18 or static contact 4, shift fork 17 passes through the bolt and installs on main shaft 5, explosion chamber 3 cover is established on copper guide 18 and is opened on the explosion chamber 3 body and have the recess 9 that supplies shift fork 17 head to slide, copper guide 18 bottom pad has annular separating brake cushion rubber pad 15, barometer 16 installs the outside at casing 2, this load switch on sulfur hexafluoride PGS post is when separating brake state the major loop as shown in fig. 1.
The application discloses load switch's on sulfur hexafluoride PGS post mechanism's casing assembly drawing is shown in fig. 2 and 5, separating brake spring 14, separating brake spring fixed plate 20 cover is established on separating brake spring axle 8, separating brake spring axle 8's one end is passed through separating brake spring fixed plate 20 and is put on casing 2, separating brake spring axle 8's the other end passes through the pivot pin connection to be fixed on separating brake spring turning arm 11, separating brake spring turning arm 11 and divide-shut turning arm 13 pass through the keyway and connect on main shaft 5, can drive separating brake spring turning arm 11 and divide-shut turning arm 13 and rotate when main shaft 5 rotates promptly. The mechanism component 6 is connected with the connecting rod 12 through a pin shaft, and the connecting rod 12 is connected with the opening and closing crank arm 13 through a pin shaft. When the switch is switched on, the mechanism assembly 6 moves to push the connecting rod 12 to move, the switching-on and switching-off connecting lever 13 moves to drive the spindle 5 to rotate anticlockwise for a certain angle, the switching-off spring connecting lever 11 also rotates anticlockwise at the same time, and the switching-off spring connecting lever 11 enables the switching-off spring 14 to compress and store energy in the process of rotating anticlockwise; when the switch is opened, the opening spring 14 releases energy to push the opening spring connecting lever 11, the opening spring connecting lever 11 drives the main shaft 5 to rotate clockwise, the opening and closing connecting lever 13 drives the connecting rod 12 to move, and the connecting rod 12 pushes the mechanism assembly 6 to return to the position before the switch is closed, which is the opening and closing process.
Tests prove that the series of PGS pole load switches are well matched with the spring operation mechanism at present, the opening and closing characteristics meet the requirements, the opening time is within 40ms, and the closing time is within 60 ms.
In the process of opening the brake, the balance of the force of the main spring is not available, the energy released by the opening spring overcomes the friction force of the motion of the main loop to do work and is converted into the kinetic energy of the opening speed, the excess energy causes the rebound of the opening brake, and when the rebound of the opening brake is too large, the opening distance after the opening brake is possibly instantly reduced, so that the main loop is punctured. In order to solve the problem, the damper function of the load switch on the ZW20 series PGS column is realized by padding an annular opening buffer rubber pad at the bottom of a copper guide rod, through repeated tests and calculation, a rubber gasket with the fixed shore hardness of 45-50 degrees is adopted to absorb the redundant energy generating opening rebound, the opening rebound can reach the theoretical safety range, and the opening and closing requirements can be met through service life test verification.
The state of the main circuit during switching on and off is explained with reference to fig. 1 and 4, and it should be noted that the assembly drawing shown in fig. 2 and the main circuit drawing shown in fig. 1 are a relationship between a front view and a rear view. As shown in fig. 1: in the closing process, the main shaft 5 rotates clockwise, the main shaft 5 drives the shifting fork 17 to move clockwise when rotating, the shifting fork head 17 clamped in the groove 9 of the 3 arc extinguish chamber drives the arc extinguish chamber 3 to move rightwards along the copper guide rod 18, and closing is completed when the arc extinguish chamber 3 is completely contacted with the static contact 4 for a certain distance; in the brake-separating process, the main shaft 5 rotates anticlockwise, the main shaft 5 drives the shifting fork 17 to rotate anticlockwise, the shifting fork head 17 clamped in the groove 9 of the arc extinguish chamber 3 drives the arc extinguish chamber 3 to move leftwards, the arc extinguish chamber 3 can strike the brake-separating buffer rubber pad 15 sleeved at the bottom of the copper guide rod, and residual energy provided by the brake-separating spring 14 after brake-separating operation is completed is absorbed by the brake-separating buffer rubber pad. Because the explosion chamber moves along the copper guide rod in the switching-on and switching-off process, the switching-on and switching-off motion is the direct action type, and compared with the traditional blade type main circuit switching-on and switching-off structure, the direct action type main circuit switching-on and switching-off structure has the advantages of long service life and good stability.
As shown in fig. 3, the load switch on the sulfur hexafluoride PGS column according to the present application is provided with two inflation ports, an inflation port 19 located at the rear of the housing is used for filling SF6 gas during the production process, and an inflation port located at the lower portion of the housing is used for installing the underlying barometer 16. Because the switch is a column switch, the air pressure gauge adopts a large-size air pressure gauge with the dial plate with the outer diameter of 110mm in order to observe and know the air pressure condition in the air box conveniently. If the switch has low air pressure due to failure, the pressure switch transmits an alarm signal to inform a remote place that the low air pressure state is achieved. And at the moment, the low-air-pressure locking device works to lock the opening and closing electromagnet and the main shaft connected with the opening and closing handle so as to achieve the purposes of neither on-site opening and closing operation nor remote operation.
It will be understood that equivalents and modifications may be made thereto by those of ordinary skill in the art based on the technical solution of the present application and the inventive concept thereof, and all such modifications and alterations should fall within the scope of the claims appended hereto.
Claims (8)
1. A quick on-off pre-stored energy type sulfur hexafluoride PGS on-column load switch is characterized by comprising an elastic operation mechanism and an arc extinguish chamber transverse movement mechanism which are coaxially arranged on a main shaft, wherein the elastic operation mechanism is connected with an on-off mechanism component through a connecting rod;
when the load switch on the PGS column is switched on, the switch-on/off mechanism assembly compresses the spring operation mechanism through the connecting rod to realize pre-stored energy, and the arc extinguish chamber transverse moving mechanism pushes the arc extinguish chamber to move towards the switch-on direction;
when the load switch on the PGS column is opened, the spring operation mechanism releases energy storage and drives the connecting rod to push the switching-on/off mechanism component to return to the position before switching-on, and the arc extinguish chamber transverse moving mechanism pulls the arc extinguish chamber to move towards the switching-off direction.
2. The quick on-off pre-stored energy type sulfur hexafluoride PGS pole load switch according to claim 1, wherein the spring operation mechanism comprises: the brake separating device comprises a brake separating spring, a brake separating spring shaft, a brake separating spring connecting lever and a brake separating and combining connecting lever, wherein the brake separating spring is sleeved on the brake separating spring shaft, one end of the brake separating spring shaft is fixed on the shell, the other end of the brake separating spring shaft is hinged with the brake separating spring connecting lever, the brake separating spring connecting lever is connected with a spindle key groove, the brake separating connecting lever is connected with the spindle key groove, one end of a connecting rod is hinged with the brake separating and combining connecting lever, and the other end of the connecting rod is hinged with a brake separating and combining mechanism component.
3. The quick on-off pre-stored energy type sulfur hexafluoride PGS pole load switch according to claim 1, wherein the arc extinguish chamber traversing mechanism is a shifting fork mounted on the main shaft, and the head of the shifting fork slides in a groove preset on the arc extinguish chamber body.
4. The quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch according to claim 1, wherein the arc extinguish chamber is sleeved on the copper guide rod, and an annular cushion rubber pad is padded at the bottom of the copper guide rod.
5. The quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch according to claim 1, wherein a charging port for flushing SF6 gas is formed in the rear portion of the PGS column upper load switch housing, and a charging port for mounting a barometer is formed in the lower portion of the PGS column upper load switch housing.
6. The quick on-off pre-stored energy type sulfur hexafluoride PGS pole load switch according to claim 2, wherein a separating brake spring fixing plate is further sleeved on the separating brake spring shaft, and one end of the separating brake spring shaft is arranged on the shell through the separating brake spring fixing plate.
7. The quick on-off pre-stored energy type sulfur hexafluoride PGS pole load switch according to claim 2, wherein the other end of the opening spring shaft is fixed on the opening spring crank arm through a shaft pin, one end of the connecting rod is connected with the opening and closing crank arm through a pin shaft, and the other end of the connecting rod is connected with the opening and closing mechanism assembly through a pin shaft.
8. The quick on-off pre-stored energy type sulfur hexafluoride PGS column load switch according to claim 4, wherein the annular cushion rubber pad is a rubber gasket with a fixed Shore hardness of 45-50 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260953.3A CN112331518A (en) | 2020-11-12 | 2020-11-12 | Load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260953.3A CN112331518A (en) | 2020-11-12 | 2020-11-12 | Load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112331518A true CN112331518A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011260953.3A Pending CN112331518A (en) | 2020-11-12 | 2020-11-12 | Load switch on quick deciliter pre-energy storage type sulfur hexafluoride PGS post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112331518A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205303311U (en) * | 2016-01-12 | 2016-06-08 | 太原立新电力科技有限公司 | Vacuum circuit breaker |
| CN109326483A (en) * | 2018-12-01 | 2019-02-12 | 宁波鑫鑫鑫寅电气有限公司 | Ac high-voltage SF6 breaker and its permanent-magnet operating mechanism |
| CN110739177A (en) * | 2019-11-22 | 2020-01-31 | 河南领智电气有限公司 | integration isolation vacuum circuit breaker |
-
2020
- 2020-11-12 CN CN202011260953.3A patent/CN112331518A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205303311U (en) * | 2016-01-12 | 2016-06-08 | 太原立新电力科技有限公司 | Vacuum circuit breaker |
| CN109326483A (en) * | 2018-12-01 | 2019-02-12 | 宁波鑫鑫鑫寅电气有限公司 | Ac high-voltage SF6 breaker and its permanent-magnet operating mechanism |
| CN110739177A (en) * | 2019-11-22 | 2020-01-31 | 河南领智电气有限公司 | integration isolation vacuum circuit breaker |
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Application publication date: 20210205 |
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