CN109671579B - Brake-separating control method of quick operating mechanism - Google Patents
Brake-separating control method of quick operating mechanism Download PDFInfo
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- CN109671579B CN109671579B CN201710955156.9A CN201710955156A CN109671579B CN 109671579 B CN109671579 B CN 109671579B CN 201710955156 A CN201710955156 A CN 201710955156A CN 109671579 B CN109671579 B CN 109671579B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims abstract description 11
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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Abstract
The invention relates to a brake-separating control method of a quick operating mechanism. The opening control method of the quick operating mechanism comprises the following steps: (1) before the rapid operating mechanism receives a brake opening signal, brake opening energy storage is carried out on the rapid operating mechanism, so that brake opening repulsion force borne by a piston of the rapid operating mechanism is smaller than brake closing suction force borne by the piston; (2) the electromagnetic mechanism of the quick operating mechanism is electrified, the electromagnetic mechanism generates an electromagnetic field with the direction opposite to that of the magnetic field of the permanent magnetic mechanism, the closing suction force borne by the piston is reduced to be smaller than the opening repulsion force borne by the piston, and the piston is quickly opened. The rapid operating mechanism is subjected to brake-separating energy storage, so that the brake-separating repulsive force borne by the piston is only slightly smaller than the brake-closing attractive force borne by the piston, and the piston moves to the brake-separating position only by introducing a small amount of current to the electromagnetic mechanism so that the brake-separating repulsive force borne by the piston is larger than the brake-closing attractive force borne by the piston, so that the electric quantity is saved, and the manufacturing cost of a control circuit of the electromagnetic mechanism is also reduced.
Description
Technical Field
The invention relates to a brake-separating control method of a quick operating mechanism.
Background
The fast operating mechanism is widely applied to the field of direct current switches at present to improve the response speed of a high-voltage switch or a low-voltage switch, so that the current can be divided within a few milliseconds. The existing quick operating mechanism is mainly an electromagnetic operating mechanism or a spring operating mechanism, in the using process of the electromagnetic operating mechanism, a repulsion mechanism needs a large-capacity energy storage power supply, the current required at the moment of switching on and switching off reaches ten thousand amperes, certain impact is caused to a power supply system, and the consumed energy is high.
The utility model discloses an authority bulletin number is CN 204834384U, the china utility model patent that authority bulletin date is 2015.12.02 discloses an operating mechanism and use this operating mechanism's locomotive, embodiment 4 of locomotive provides an operating mechanism, this operating mechanism includes the master cylinder body, be equipped with permanent magnetism suction means in the master cylinder body and with the coaxial piston that sets up of permanent magnetism suction means, still be equipped with electromagnetic mechanism in the master cylinder body, the magnetic field direction that electromagnetic mechanism provided is opposite with the magnetic field direction that permanent magnetism suction means provided, the piston divide into two upper and lower cavities with the master cylinder body, the cavity of top is the separating brake chamber, the cavity of below is the separating brake chamber, it is equipped with separating brake side gas port and closing brake side gas port respectively to correspond on separating brake chamber and the closing brake chamber, the top of piston is equipped with the retaining spring that makes the piston keep the separating brake position. The operating mechanism adopts a combined action mode of a reverse magnetic field of a brake separating magnet and pneumatic tripping to electrify the electromagnetic mechanism when in brake separating, so that the magnetic field of the electromagnetic mechanism counteracts the magnetic field of the permanent magnetic mechanism, the permanent magnetic attraction of the permanent magnetic mechanism received by the piston is rapidly reduced, meanwhile, gas is filled through the air port at the brake separating side, the resultant force of the gas pressure and the retaining spring is the brake separating repulsion force received by the piston, the brake separating repulsion force exceeds the brake closing attraction force received by the piston at the moment, and the piston is rapidly moved to a brake separating position to complete brake separating operation.
Although the brake-separating control method of the operating mechanism can rapidly separate the brake of the operating mechanism, in the using process, when the operating mechanism receives a brake-separating signal, the electromagnetic mechanism is electrified and the air is inflated through the brake-separating side air port, and in order to enable the magnetic field generated by the electromagnetic mechanism to offset the magnetic field generated by the permanent magnetic mechanism so as to ensure that the resultant force of the pressure of the air inflated by the brake-separating side air port and the holding spring exceeds the closing suction force borne by the piston, a larger current needs to be introduced into the electromagnetic mechanism, so that the requirement on the manufacturing cost of a control circuit of the electromagnetic mechanism is higher, and a large amount of electric quantity is consumed.
Disclosure of Invention
The invention aims to provide a brake-separating control method of a quick operation mechanism, which can reduce the current applied to an electromagnetic mechanism.
In order to solve the technical problems, the technical scheme of the opening control method of the quick operating mechanism comprises the following steps:
scheme 1: a brake opening control method of a quick operation mechanism comprises the following steps: (1) before the rapid operating mechanism receives a brake opening signal, brake opening energy storage is carried out on the rapid operating mechanism, so that brake opening repulsion force borne by a piston of the rapid operating mechanism is smaller than brake closing suction force borne by the piston; (2) the electromagnetic mechanism of the quick operating mechanism is electrified, the electromagnetic mechanism generates an electromagnetic field with the direction opposite to that of the magnetic field of the permanent magnetic mechanism, the closing suction force borne by the piston is reduced to be smaller than the opening repulsion force borne by the piston, and the piston is quickly opened.
The technical scheme has the beneficial effects that: the rapid operating mechanism is subjected to brake-separating energy storage, so that the brake-separating repulsive force borne by the piston is only slightly smaller than the brake-closing attractive force borne by the piston, and the piston moves to the brake-separating position only by introducing a small amount of current to the electromagnetic mechanism so that the brake-separating repulsive force borne by the piston is larger than the brake-closing attractive force borne by the piston, so that the electric quantity is saved, and the manufacturing cost of a control circuit of the electromagnetic mechanism is also reduced.
Scheme 2: according to the opening control method of the rapid operating mechanism in the scheme 1, in the step (1), the opening side air port is used for inflating air into the opening cavity to store energy for opening the rapid operating mechanism. The method comprises the steps that opening energy storage is carried out on a quick operating mechanism in an air pressure tripping mode, the pressure of the charged gas is easily controlled by the charging energy storage, and it is determined that opening repulsion force borne by a piston after opening energy storage is smaller than closing suction force borne by the piston.
Scheme 3: according to the opening control method of the rapid operating mechanism in the scheme 2, the opening repulsive force is the resultant force of the elastic force of the retaining spring to the piston and the air pressure of the air in the opening cavity to the piston. The elastic force of the retaining spring and the gas pressure in the opening cavity act on the piston together, so that the piston can have enough pressure to be kept in an opening state while opening repulsive force is provided.
Scheme 4: according to the opening control method of the rapid operating mechanism in any one of the schemes 1 to 3, the closing suction force applied to the piston in the step (1) includes the suction force of the permanent magnet mechanism to the piston. The piston is kept in a closing state by the suction force of the permanent magnetic mechanism to the piston, and the structure is simple and the manufacture is convenient.
Scheme 5: according to the opening control method of the rapid operating mechanism in the scheme 4, the closing suction force applied to the piston further includes the pressure of the gas in the closing cavity to the piston. The piston is kept in a closing state under the combined action of the pressure of the gas in the closing cavity on the piston and the suction force of the permanent magnet mechanism on the piston, so that the volume of the permanent magnet can be reduced, and the process difficulty and the manufacturing cost are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of a quick operating mechanism using a brake opening control method of the quick operating mechanism of the present invention;
fig. 2 is a schematic structural diagram of an embodiment 2 of a fast operating mechanism using the opening control method of the fast operating mechanism of the present invention.
The respective symbols in the figure: 1. an upper end cover; 2. a magnetic conductive ring; 3. a barrel; 4. a piston; 5. a lower end cover; 6. a magnetic yoke; 7. a retention spring; 8. a guide bar; 9. a brake-separating side air port; 10. a permanent magnet; 11. a coil; 12. a brake separating cavity; 13. a closing cavity; 14. closing side air port.
Detailed Description
An embodiment 1 of the fast operating mechanism using the opening control method of the fast operating mechanism of the invention is shown in fig. 1, and comprises a cylinder 3, wherein an upper end cover 1 and a lower end cover 5 are respectively and correspondingly arranged at the upper end and the lower end of the cylinder 3, the axial direction of the cylinder is the opening and closing direction of the fast operating mechanism, a magnetic conductive ring 2 is arranged between the upper end cover 1 and the cylinder 3, a guide rod 8 coaxial with the cylinder 1 is arranged in the cylinder 1, the guide rod 8 can axially move along the cylinder 1, the guide rod 8 is provided with a protruding end exceeding the upper end cover 1, a holding spring 7 is fixedly connected to the protruding end, a piston 4 is fixedly connected to one end of the guide rod 8 positioned in the cylinder 3, the cylinder 1 is separated by the piston 4 into an upper opening cavity 12 and a lower closing cavity 13, the piston 4 can axially move along with the guide rod 8, and the circumferential surface of the piston 4 is in sliding sealing fit with the inner wall of the cylinder 1; the permanent magnet 10 is fixedly connected to the inner wall surface of the magnetic conduction ring 2, the magnetic yoke 6 is further arranged on the inner wall surface of the permanent magnet 10, an opening for the guide rod 8 to move axially is formed in the magnetic yoke 6, the magnetic yoke 6 is provided with a boss extending towards the piston 4 along the axial direction of the guide rod 8, a coil 11 is sleeved on the outer wall of the boss, the permanent magnet mechanism comprises the magnetic conduction ring 2, the permanent magnet 10 and the magnetic yoke 6, and the electromagnetic mechanism comprises the coil 11 and the magnetic yoke 6; the magnetic yoke 6 and the upper end cover 1 are provided with communicated opening side air ports 9, the inner ports of the opening side air ports 9 are positioned on the inner wall of the magnetic yoke 6 facing the opening cavity 12, the corresponding outer ports are positioned on the outer wall of the upper end cover 1, the lower end cover 5 is provided with closing side air ports 14 for communicating the closing cavity 13 with the outside, the inner ports of the closing side air ports are positioned on the inner wall of the lower end cover 5 facing the closing cavity 13, and the corresponding outer ports are positioned on the side wall of the lower end cover 5; the upper end cover 1, the lower end cover 5 and the guide rod 8 are made of non-magnetic conductive materials, and the cylinder 3, the magnetic conductive ring 2, the magnet yoke 6 and the piston 4 are made of magnetic conductive materials. The piston 4 is contacted with the magnetic yoke 6 under the action of the gas pressure in the closing cavity 13 and the suction force of the permanent magnet 10, and the quick operating mechanism is in a closing state; the piston 4 is separated from the magnetic yoke 6 and moves downwards under the action of the gas pressure in the opening cavity 12 and the elastic force of the holding spring 7, and the quick operating mechanism is in an opening state.
In other embodiments of the switching-off control method of the rapid operating mechanism, the closing side air port can be omitted, and the closing suction force borne by the piston is only provided by the suction force of the permanent magnetic mechanism to the piston; the holding spring can be omitted, and the opening repulsive force for keeping the piston of the quick operating mechanism in the opening state is only provided by the gas pressure in the opening cavity; the opening air inlet can be omitted, and the elastic force of the holding spring to the piston is increased by extruding the holding spring to realize opening energy storage of the quick operating mechanism.
Claims (3)
1. A brake-separating control method of a quick operation mechanism is characterized by comprising the following steps: (1) before the rapid operating mechanism receives a brake opening signal, brake opening energy storage is carried out on the rapid operating mechanism, so that brake opening repulsion force borne by a piston of the rapid operating mechanism is smaller than brake closing suction force borne by the piston; (2) electrifying an electromagnetic mechanism of the quick operating mechanism, generating an electromagnetic field with the direction opposite to that of the magnetic field of the permanent magnetic mechanism by the electromagnetic mechanism, reducing the closing suction force borne by the piston to be smaller than the opening repulsion force borne by the piston, and quickly opening the piston; in the step (1), the opening side air port is used for inflating air into the opening cavity to carry out opening energy storage on the quick operating mechanism; the opening repulsion force is the resultant force of the elasticity of the retaining spring to the piston and the air pressure of the air in the opening cavity to the piston.
2. The opening control method of the quick operating mechanism according to claim 1, characterized in that: the closing suction force applied to the piston in the step (1) comprises the suction force of a permanent magnet mechanism to the piston.
3. The opening control method of the quick operating mechanism according to claim 2, characterized in that: the closing suction force applied to the piston also comprises the pressure of the gas in the closing cavity to the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955156.9A CN109671579B (en) | 2017-10-13 | 2017-10-13 | Brake-separating control method of quick operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955156.9A CN109671579B (en) | 2017-10-13 | 2017-10-13 | Brake-separating control method of quick operating mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN109671579A CN109671579A (en) | 2019-04-23 |
| CN109671579B true CN109671579B (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710955156.9A Active CN109671579B (en) | 2017-10-13 | 2017-10-13 | Brake-separating control method of quick operating mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113241267B (en) * | 2021-03-29 | 2023-02-17 | 平高集团有限公司 | Quick opening/closing electromagnetic repulsion mechanism and quick opening/closing switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933134A1 (en) * | 1999-07-19 | 2001-01-25 | Claas Industrietechnik Gmbh | Pressure measuring system |
| CN202473787U (en) * | 2011-12-23 | 2012-10-03 | 河南瑞特电气有限公司 | Novel permanent-magnet driving device |
| CN102903546A (en) * | 2012-10-22 | 2013-01-30 | 中国航天科技集团公司第四研究院第四十一所 | Actuation operation mechanism of fuel type direct force acting high-voltage switch |
| CN204834384U (en) * | 2015-06-30 | 2015-12-02 | 国家电网公司 | Operating mechanism and use locomotive of this operating mechanism |
-
2017
- 2017-10-13 CN CN201710955156.9A patent/CN109671579B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933134A1 (en) * | 1999-07-19 | 2001-01-25 | Claas Industrietechnik Gmbh | Pressure measuring system |
| CN202473787U (en) * | 2011-12-23 | 2012-10-03 | 河南瑞特电气有限公司 | Novel permanent-magnet driving device |
| CN102903546A (en) * | 2012-10-22 | 2013-01-30 | 中国航天科技集团公司第四研究院第四十一所 | Actuation operation mechanism of fuel type direct force acting high-voltage switch |
| CN204834384U (en) * | 2015-06-30 | 2015-12-02 | 国家电网公司 | Operating mechanism and use locomotive of this operating mechanism |
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| CN109671579A (en) | 2019-04-23 |
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