CN102412070B - Guide and buffer device of moving contact - Google Patents
Guide and buffer device of moving contact Download PDFInfo
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- CN102412070B CN102412070B CN201110208746.8A CN201110208746A CN102412070B CN 102412070 B CN102412070 B CN 102412070B CN 201110208746 A CN201110208746 A CN 201110208746A CN 102412070 B CN102412070 B CN 102412070B
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- piston
- guide
- arcing contact
- moving
- moving arcing
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Abstract
The invention provides a guide and buffer device of a moving contact, comprising a moving arcing contact, a guide cylinder, a check valve, a piston and a guide holder, wherein the guide cylinder is of a round cylinder shape and is fixed in the guide holder; an installing part is concavely arranged on the moving arcing contact, the check valve and the piston are installed on the installing part of the moving arcing contact, the moving arcing contact penetrates through the guide cylinder and the guide holder, the check valve and the piston are positioned in the guide cylinder; a groove is formed on the circumference of the piston, a piston ring is installed in the groove, the piston ring is abutted against the inner wall of the guide cylinder; the piston and the moving arcing contact are fixedly connected, a step hole is concavely formed on one side surface of the piston, the distance between the bottom surface of the step hole and a spacing step of the installing part is greater than the thickness of the check valve; the check valve is of an annular shape, the outer diameter of the check valve is less than the diameter of the step hole; the check valve is installed between the bottom surface of the step hole and the spacing step of the installing part; and a plurality of holes penetrating through the step hole are formed on the piston. The invention not only achieves the buffer effect, but also is favorable for prolonging the service life of a transmission system and an operating mechanism.
Description
[technical field]
The present invention relates to the moving arcing contact telecontrol equipment in gas-insulated high-voltage switchgear assembly.
[background technology]
The structure of generally using in prior art is that moving arcing contact adopts guide ring to realize guiding in motion process, but moving arcing contact is in motion process, and the elliptical gear of generation is larger.Its existing problem is: moving arcing contact is when sub-switching operation, and moving arcing contact is become static from motion state, mainly by operating mechanism and drive system, realizes, and the impulsive force producing like this produces larger impact to the life-span of operating mechanism and drive system.
[summary of the invention]
The guiding and the buffer unit that the object of this invention is to provide a kind of moving contact, when sub-switching operation, reducing moving arcing contact, from motion state, to become speed be the impulsive force in zero process.
To achieve these goals, the present invention adopts following technical scheme:
Guiding and a buffer unit, comprise moving arcing contact, guide cylinder, single-phase valve, piston and guide holder; Described guide cylinder is cylindric, in fixed guide seat; On moving arcing contact, be concaved with installation portion, single-phase valve and piston are installed on the installation portion of moving arcing contact, and moving arcing contact is through guide cylinder and guide holder, and single-phase valve and piston are arranged in guide cylinder; Piston circumference is provided with groove, and piston ring is installed in groove, and piston ring supports the inwall of guide cylinder; Piston is fixedly connected with moving arcing contact, on a side of piston, is concaved with a stepped hole, and the distance between the bottom surface of stepped hole and the limited step of installation portion is greater than the thickness of unidirectional valve; Unidirectional valve is annular, and its external diameter is less than the diameter of stepped hole; Unidirectional valve is installed between the bottom surface of stepped hole and the limited step of installation portion; Piston is provided with some holes of running through stepped hole.
Described guide cylinder is provided with through hole.
Between the inwall of guide holder and guide cylinder, be formed with gap.
Guide holder two ends are separately installed with the first guide ring and the second guide ring, and moving arcing contact passes from the first guide ring and the second guide ring.
Guide holder comprises the first guide holder and the second wire seat, and the first guide holder and the second wire seat pass through bolted.
Described piston ring is comprised of with the guide ring that is set in two O type circle peripheries two O type circles that are installed on trench bottom, and described guide ring supports the inwall of guide cylinder.
Described moving arcing contact comprises the first moving arcing contact and the second moving arcing contact, and the first moving arcing contact is connected at installation portion place screw lock with the second moving arcing contact.
Through hole is strip, and this through hole is near separating brake direction one side.
With respect to prior art, the present invention has the following advantages: adopt the structure of piston to realize guide effect, simultaneously under the compound action of piston, single-phase valve, guide cylinder, guide holder, utilize the speed mode of mitigation of gases pressure decreased within a certain period of time to realize the effect that has realized buffering in motion process, not only reach buffering effect, also helped the useful life of improving drive system and operating mechanism.
[accompanying drawing explanation]
Fig. 1 is the assembly structure figure of apparatus of the present invention ("on" position);
Fig. 2 is the partial enlarged drawing in Fig. 1;
Fig. 3 is the structure chart of guide cylinder of the present invention;
Fig. 4 is Fig. 3 left view;
Fig. 5 is the structure chart of piston of the present invention;
Fig. 6 is that Fig. 5 is along the cutaway view of A-A line;
Fig. 7 is the structure chart of single-phase valve of the present invention;
Schematic diagram when Fig. 8 is apparatus of the present invention combined floodgate, wherein unidirectional valve leans against on limited step 11 under the promotion of gas, and the gas of combined floodgate direction flows to and opens a sluice gate direction through hole 41.
Wherein: 1-moving arcing contact; 2-guide cylinder; The single-phase valve of 3-; 4-piston; 5-guide holder A; 6-guide ring; 7-piston ring; 8-bolt; 9-guide holder; 10-guide ring; 11-limited step; 12-bottom surface; 13-annular bottom surface; 14-enclosed cavity; 15-hole; 16-gap; 17-moving component; 40-stepped hole; 41-hole; 42-groove.
[embodiment]
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Refer to shown in Fig. 1 to Fig. 8, wherein single-phase valve 3 is annular (structure is as Fig. 7), on piston 4, have uniform hole 41 (structure is as Fig. 4), simultaneously single-phase valve 3 in the separating brake direction side of piston 4 along moving arcing contact 1 at the limited step 11 of the installation portion 110 of moving arcing contact 1,12 of the bottom surfaces of piston 4 stepped holes 40 move left and right; Piston ring 7 forms (structure is as Fig. 2) by two O type circles and a guide ring that is set in two O type circle peripheries, be arranged on 42 li of the grooves of piston 4, it not only has guiding and sealing gas function, the effect that can also reduce friction, forms moving component 17 (assembly relation is as Fig. 2) by moving arcing contact 1 single-phase valve 3, piston 4, coaxial being assembled together of piston ring 7; Moving arcing contact 1 comprises the first moving arcing contact 111 and the second moving arcing contact 112, the first moving arcing contact 111 is connected with the second moving arcing contact 112 screw locks, the first moving arcing contact 111 and the second moving arcing contact 112 junctions are concaved with installation portion 110, unidirectional valve 3 and piston 4 are installed to be made, can first unidirectional valve 3 and piston 4 be installed on the second moving arcing contact 112, and then the first moving arcing contact 111 is connected with the second moving arcing contact 112 screw locks, unidirectional valve 3 and piston 4 installations are convenient in design like this.Guide cylinder 2 is arranged on the centre of guide holder 5, guide holder 9, with bolt 8 guide holder 5, guide holder 9 guide cylinder 2 axially on compress, form gap 16 (gap 16 of the outer wall formation of the inwall of guide holder 5, guide holder 9 and guide cylinder 2); Moving arcing contact 1 is through guide cylinder 2, and single-phase valve 3, piston 4 and piston ring 7 are arranged in guide cylinder 2, and the guide ring of piston ring 7 supports the inwall of guide cylinder 2; When single-phase valve 3 and piston 4 are close to completely, the annular bottom surface 13 of the inwall of moving arcing contact 1, single-phase valve 3, piston 4, guide cylinder 2, piston ring 7, guide holder has surrounded enclosed cavity 14 together.Moving arcing contact 1 passes from guide ring 6,10.
The principle of the guiding of moving contact of the present invention and the guiding of buffer unit and buffering:
When closing operation, the gas on piston 4 right sides, by uniform hole 41 on piston 4, forces single-phase valve 3 to move to limited step 11 to separating brake direction (left side), and single-phase valve 3 is opened, because the gas pressure intensity of piston 4 both sides is equal, so only there is guide effect in making process, when sub-switching operation, the gas of piston 4 separating brake sides (left side) acts on single-phase valve 3, force single-phase valve 3 to combined floodgate direction, to move to 12 positions, bottom surface of piston stepped hole 40, single-phase valve 3 is close to completely on piston 4, blocked the hole 41 on piston 4, single-phase valve 3 cuts out, within the unit interval, the volume of enclosed cavity 14 diminishes rapidly, and the interior gas of enclosed cavity 14 by the strip hole 15 on guide cylinder along gap 16 flow out less, the interior pressure of enclosed cavity 14 is just large gradually like this, in combined floodgate direction to single-phase valve 3, piston 4 has a reverse thrust, having reduced moving component 17, from motion state, to become speed be the impulsive force in zero process, thereby played cushioning effect.
Closed check valve and opening in invention, refer to that single-phase valve is annular, on piston, have uniform hole, by moving arcing contact piston and coaxial the assembling up of single-phase valve, single-phase valve is in the separating brake direction side of piston and can under the guiding at pull bar, move left and right, and when closing operation, gas passes through piston hole, force single-phase valve to move to separating brake direction, single-phase valve is opened; When sub-switching operation, the gas of piston separating brake side acts on single-phase valve, forces single-phase valve to be pressed on piston, has blocked the hole on piston, and single-phase valve cuts out.
The gas being closed in the present invention is slowly extruded and is realized cushioning effect by guide cylinder position of opening, its sidewall that refers to guide cylinder separating brake side has strip hole, guide cylinder is arranged in guide holder, guide cylinder coordinates with guide holder closely, the binding face gap of guide cylinder and guide holder is smaller, fewer by gas in unit interval, when sub-switching operation, within the unit interval, the bottom surface of guide holder, piston, the volume of the enclosed cavity that guide cylinder forms diminishes rapidly, and sealing intracavity gas from binding face gap, flow out less, in enclosed cavity, pressure is just large gradually like this, in combined floodgate direction, piston is had to a reverse thrust, having reduced moving arcing contact, from motion state, to become speed be the impulsive force in zero process, thereby played cushioning effect.
Claims (6)
1. the guiding of moving contact and a buffer unit, is characterized in that, comprises moving arcing contact (1), guide cylinder (2), single-phase valve (3), piston (4) and guide holder; Described guide cylinder (2) is cylindric, is fixed in guide holder; On moving arcing contact (1), be concaved with installation portion (110), single-phase valve (3) and piston (4) are installed on the installation portion (110) of moving arcing contact (1), moving arcing contact (1) is through guide cylinder (2) and guide holder, and single-phase valve (3) and piston (4) are arranged in guide cylinder (2); Piston (4) circumference is provided with groove (42), and piston ring (7) is installed in groove (42), and piston ring (7) supports the inwall of guide cylinder (2); Piston (4) is fixedly connected with moving arcing contact (1), on one side of piston (4), be concaved with a stepped hole (40), the distance between the bottom surface (12) of stepped hole (40) and the limited step (11) of installation portion (110) is greater than the thickness of unidirectional valve (3); Unidirectional valve (3) is annular, and its external diameter is less than the diameter of stepped hole (40); Unidirectional valve (3) is installed between the bottom surface (12) of stepped hole (40) and the limited step (11) of installation portion (110); Piston (4) is provided with some holes (41) of running through stepped hole (40); Described guide cylinder (2) is provided with through hole (15); Between the inwall of guide holder and guide cylinder (2), be formed with gap (16); Through hole (15) is near separating brake direction one side;
When closing operation, single-phase valve (3) is opened, and the gas pressure intensity of piston (4) both sides equates, only has guide effect in making process;
When sub-switching operation, single-phase valve (3) cuts out, the interior pressure of enclosed cavity (14) is just large gradually, in combined floodgate direction, single-phase valve (3), piston (4) is had to a reverse thrust, and having reduced moving component (17), from motion state, to become speed be the impulsive force in zero process.
2. the guiding of a kind of moving contact as claimed in claim 1 and buffer unit, it is characterized in that, guide holder two ends are separately installed with the first guide ring (6) and the second guide ring (10), and moving arcing contact (1) passes from the first guide ring (6) and the second guide ring (10).
3. the guiding of a kind of moving contact as claimed in claim 1 and buffer unit, is characterized in that, guide holder comprises the first guide holder (9) and the second wire seat (5), and the first guide holder (9) and the second wire seat (5) are fastening by bolt (8).
4. the guiding of a kind of moving contact as claimed in claim 1 and buffer unit, it is characterized in that, described piston ring (7) is comprised of with the guide ring that is set in two O type circle peripheries two O type circles that are installed on groove (42) bottom, and described guide ring supports the inwall of guide cylinder (2).
5. the guiding of a kind of moving contact as claimed in claim 1 and buffer unit, it is characterized in that, described moving arcing contact (1) comprises the first moving arcing contact (111) and the second moving arcing contact (112), and the first moving arcing contact (111) is located screw lock with the second moving arcing contact (112) at installation portion (110) and is connected.
6. the guiding of a kind of moving contact as claimed in claim 1 and buffer unit, is characterized in that, through hole (15) is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110208746.8A CN102412070B (en) | 2011-07-25 | 2011-07-25 | Guide and buffer device of moving contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110208746.8A CN102412070B (en) | 2011-07-25 | 2011-07-25 | Guide and buffer device of moving contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102412070A CN102412070A (en) | 2012-04-11 |
| CN102412070B true CN102412070B (en) | 2014-01-29 |
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ID=45914102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110208746.8A Active CN102412070B (en) | 2011-07-25 | 2011-07-25 | Guide and buffer device of moving contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102412070B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119282B (en) * | 2017-06-22 | 2021-05-28 | 河南平芝高压开关有限公司 | Contact collision buffer device and sulfur hexafluoride breaker using same |
| CN109273316B (en) * | 2017-07-18 | 2021-08-06 | 平高集团有限公司 | Guide sealing structure and arc extinguish chamber and circuit breaker using same |
| CN107578944B (en) * | 2017-07-24 | 2019-05-14 | 许继集团有限公司 | Disconnecting switch and its moving contact |
| CN110993381B (en) * | 2019-12-16 | 2020-10-23 | 西安交通大学 | Gas buffering structure capable of automatically relieving pressure for electromagnetic repulsion mechanism and working method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639713A (en) * | 1968-12-10 | 1972-02-01 | Westinghouse Electric Corp | Operating mechanism for a circuit interrupter |
| CN1044361A (en) * | 1989-01-17 | 1990-08-01 | 梅兰日兰公司 | Gas-blast circuit breaker |
| CN2747411Y (en) * | 2004-03-10 | 2005-12-21 | 林芳燊 | Oil damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0963423A (en) * | 1995-08-24 | 1997-03-07 | Mitsubishi Electric Corp | Gas insulated switch device |
-
2011
- 2011-07-25 CN CN201110208746.8A patent/CN102412070B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639713A (en) * | 1968-12-10 | 1972-02-01 | Westinghouse Electric Corp | Operating mechanism for a circuit interrupter |
| CN1044361A (en) * | 1989-01-17 | 1990-08-01 | 梅兰日兰公司 | Gas-blast circuit breaker |
| CN2747411Y (en) * | 2004-03-10 | 2005-12-21 | 林芳燊 | Oil damper |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-63423A 1997.03.07 |
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| Publication number | Publication date |
|---|---|
| CN102412070A (en) | 2012-04-11 |
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| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Owner name: CHINA THREE GORGES CORPORATION Effective date: 20130508 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Meng Inventor after: Cheng Li Inventor after: Lv Junling Inventor after: Xu Gang Inventor after: Liu Kun Inventor before: Zhang Meng Inventor before: Cheng Li Inventor before: Lv Junling Inventor before: Xu Gang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG MENG CHENG LI LV JUNLING XU GANG TO: ZHANG MENG CHENG LI LV JUNLING XU GANG LIU KUN |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130508 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Applicant after: China XD Electronic Corporation Applicant after: China Three Gorges Corporation Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Applicant before: China XD Electronic Corporation |
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| C14 | Grant of patent or utility model | ||
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