CN220731405U - Medium-voltage quick mechanical switch - Google Patents
Medium-voltage quick mechanical switch Download PDFInfo
- Publication number
- CN220731405U CN220731405U CN202322082364.6U CN202322082364U CN220731405U CN 220731405 U CN220731405 U CN 220731405U CN 202322082364 U CN202322082364 U CN 202322082364U CN 220731405 U CN220731405 U CN 220731405U
- Authority
- CN
- China
- Prior art keywords
- switching
- state
- brake
- iron core
- semi
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 56
- 239000002184 metal Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000003068 static effect Effects 0.000 claims description 21
- 230000003139 buffering effect Effects 0.000 description 7
- 238000005457 optimization Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Abstract
The utility model relates to a medium-voltage quick mechanical switch, which structurally comprises the following components: the device comprises a vacuum arc extinguishing chamber, an insulating pull rod, an electromagnetic repulsion force operating mechanism, a switching-on state/switching-off state retaining device based on semi-permanent magnet materials and a hydraulic reducing buffer device. The electromagnetic repulsion force operating mechanism can enable the switch to be rapidly opened and closed, the closing state/opening state retaining device based on the semi-permanent magnet material can provide stable retaining force at the opening and closing position of the switch, and the hydraulic reducing buffer device provides effective buffer for opening and closing of the switch. When the brake is opened, the electromagnetic repulsion force operating mechanism and the brake-on state/brake-off state maintaining device based on the semi-permanent magnet material act simultaneously, the time for reaching the peak value of the current of the brake-on coil of the electromagnetic repulsion force operating mechanism is longer than the time for reaching the peak value of the current of the brake-on coil of the electromagnetic repulsion force operating mechanism when the brake-on state/brake-off state maintaining device based on the semi-permanent magnet material is opened, so that the semi-permanent magnet material is demagnetized rapidly, and the resistance caused by magnetic attraction to brake opening is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of electrical appliance switches, in particular to the field of flexible direct current switching equipment, and particularly relates to a medium-voltage quick mechanical switch.
Background
Hybrid and mechanical dc circuit breakers are an important development direction of the current dc switching technology, and the main current branch of the dc circuit breaker adopts a fast mechanical switch. Because the direct current breaker is on and off instantly, the gap of the contact of the quick mechanical switch needs to have an opening distance for bearing high-amplitude transient recovery voltage, so the opening performance of the direct current breaker is directly determined by the opening speed of the mechanical switch, and the quick mechanical switch is a key technology for the development of the hybrid and mechanical direct current breaker.
In the existing medium-voltage quick mechanical switch product technology, an electromagnetic repulsion mechanism is adopted as an opening and closing driving device, and a spiral or butterfly spring is adopted as an opening and closing holding device, so that the device has few action parts, small volume and quick acceleration, but when rated current is large, the resistance to be overcome by the electromagnetic repulsion mechanism is increased, and the initial acceleration of opening and closing is not facilitated. The other type is to use an electromagnetic repulsion mechanism as a brake separating driving device and a monostable permanent magnet mechanism as a brake separating driving and brake separating and closing maintaining device, which has the advantages of small brake separating and closing current, relatively simple requirement on an operation power supply and the like, but the elastic collision between the electromagnetic repulsion mechanism and the permanent magnet maintaining mechanism is caused during brake separating, the rebound phenomenon is easily caused, and even brake separating failure is caused under serious conditions.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the medium-voltage quick mechanical switch, which ensures that the holding force time of the holding device is consistent with the response time of the driving force of the electromagnetic repulsion mechanism during opening, can quickly reduce the influence of the reaction force brought by the holding device, reduces the opening time and avoids the occurrence of the rebound phenomenon of opening, thereby realizing the requirements of quick, reliable and stable opening of the medium-voltage direct current breaker.
The utility model is realized by the following technical scheme, and provides a medium-voltage quick mechanical switch, which comprises a main frame, a fixed contact, a moving contact positioned below the fixed contact, an electromagnetic repulsion force operating mechanism and a switching-on state/switching-off state retaining device based on a semi-permanent magnet material, wherein the electromagnetic repulsion force operating mechanism and the switching-on state/switching-off state retaining device based on the semi-permanent magnet material are positioned below the moving contact; the electromagnetic repulsion force operating mechanism comprises a closing part positioned above a closing state/opening state retaining device based on the semi-permanent magnet material and an opening part positioned below the closing state/opening state retaining device based on the semi-permanent magnet material; the switching-on part comprises a switching-on coil and a switching-on metal repulsive force disc matched with the switching-on coil; the brake separating part comprises a brake separating coil and a brake separating metal repulsive disc matched with the brake separating coil; the switching-on state/switching-off state maintaining device based on the semi-permanent magnet material comprises a static iron core fixedly connected with the main frame, and a movable iron core which is positioned below the static iron core and is vertically and slidably connected with the main frame, wherein the static iron core is connected with the movable iron core through a switching-off spring which is vertically arranged, and the opposite side surfaces of the static iron core and the movable iron core are provided with the semi-permanent magnet material with polarity matching; the movable contact is fixedly connected with a movable guide rod through an insulating pull rod, the movable guide rod is in vertical sliding connection with the main frame, the movable guide rod downwards sequentially penetrates through a closing part, a closing state/opening state retaining device based on semi-permanent magnet materials and an opening part, the movable guide rod is fixedly arranged relative to a closing metal repulsive force disc and an opening metal repulsive force disc along the vertical direction, and the movable guide rod is connected with the movable iron core through a contact spring extending along the vertical direction.
According to the medium-voltage quick mechanical switch, the switch can be quickly opened and closed through the electromagnetic repulsion force operating mechanism, and the switching-on state/switching-off state retaining device based on the semi-permanent magnet material can provide stable retaining force at the switching-on and switching-off position of the switch. In the closing position, the closing state/opening state holding device based on the semi-permanent magnet material provides the holding force necessary for closing by using the residual magnetic field of the magnetic memory material, and the holding force is transmitted to the contact of the arc extinguishing chamber through the contact spring. When the brake is opened, the brake opening coil and the brake closing coil of the electromagnetic repulsion force operating mechanism simultaneously pass through, the residual magnetism of the holding mechanism is rapidly removed, and the electromagnetic repulsion force mechanism and the brake opening spring in the holding device provide rapid brake opening operation force. When the brake is released, the brake release position is maintained by a brake release spring in a brake release state/brake release state maintaining device based on a semi-permanent magnet material. When the electromagnetic repulsion operating mechanism is switched on, current in the opposite direction is conducted to a switching-on coil in the electromagnetic repulsion operating mechanism, and the semi-permanent magnet material is magnetized while switching-on operating force is provided, so that the moving and static iron cores move to overcome the resistance of the switching-off spring and the contact spring to conduct attraction.
As an optimization, the hydraulic reducing buffer device is arranged below the motion guide rod. According to the optimization scheme, the hydraulic reducing buffer device is arranged, and when the opening is about to be in place, the hydraulic reducing buffer device is utilized for reducing and buffering, so that effective buffering is provided for opening the switch, and the impact kinetic energy is reduced.
As optimization, a boss above the contact spring is fixedly arranged on the moving guide rod, the contact spring is sleeved on the moving guide rod, the lower end of the contact spring is propped against a fixed plate fixed on the bottom surface of the movable iron core, and the upper end of the contact spring is propped against the bottom surface of the boss. The upper limit of the contact spring is realized by the boss, so that the connection between the motion guide rod and the movable iron core is realized, the structure is simple, the contact spring is prevented from influencing the movement of the movable iron core, and the contact spring is convenient to provide the holding force during closing.
As optimization, the bottom surface of quiet iron core is equipped with the upper groove, the top surface of moving the iron core be equipped with the lower groove that the upper groove is relative, the brake release spring cover is established on the motion guide arm, and the internal diameter of brake release spring is greater than the external diameter of boss, the upper end of brake release spring pushes up the top of upper groove, the lower extreme of brake release spring pushes up to the bottom of lower groove. This optimization scheme is through setting up recess and lower groove, and the installation of the brake spring of being convenient for, and is convenient for reduce quiet iron core and move the distance between the iron core to improve the response timeliness of moving iron core and quiet iron core interact.
As optimization, the boss is positioned in the upper groove, and the lower end of the contact spring is propped against the bottom of the lower groove. The setting of this optimization scheme is convenient for contact spring's installation, is convenient for increase contact spring's length simultaneously, has improved the reliability that the combined floodgate kept.
The scheme also provides a switching-on/off method using the medium-voltage rapid mechanical switch, which comprises the following steps:
1. when the brake is separated, the electromagnetic repulsion force operating mechanism and the brake-on state/brake-off state retaining device based on the semi-permanent magnet material act simultaneously;
an induced current with the opposite direction to the exciting current in the opening coil is generated in the opening metal repulsive force disc of the electromagnetic repulsive force operating mechanism, so that the opening metal repulsive force disc moves towards the direction away from the opening coil, and the moving contact moves away from the fixed contact through the force transmission of the moving guide rod and the insulating pull rod;
a certain pulse current is conducted to a closing coil of the electromagnetic repulsion force operating mechanism, so that the semi-permanent magnet material is demagnetized rapidly, the movable iron core moves downwards under the action of a separating spring, and the contact spring stretches, so that the resistance to downward movement of a moving guide rod is reduced;
when the brake is in place, buffering is carried out by utilizing a hydraulic reducing buffer device;
when the brake is released, the brake release spring is used for maintaining the brake release position;
2. when the electromagnetic repulsion force operating mechanism is switched on, current in the opposite direction is conducted to a switching-on coil in the electromagnetic repulsion force operating mechanism, and when switching-on operating force is provided, the semi-permanent magnet material is magnetized, so that the movable iron core overcomes the resistance of the switching-off spring and the contact spring and moves towards the static iron core to conduct attraction, and meanwhile the switching-on repulsion force disc drives the moving guide rod to move upwards, so that the movable contact is in contact with the static contact;
in the closing position, the closing state/opening state retaining device based on the semi-permanent magnet material provides the retaining force necessary for closing by using the residual magnetic field of the magnetic memory material, and the retaining force is transmitted to the moving guide rod through the contact spring and finally transmitted to the moving contact.
The beneficial effects of the utility model are as follows: by means of the mutual matching of the electromagnetic repulsion force operating mechanism and the switching-on state/switching-off state maintaining device based on the semi-permanent magnetic material, when switching off, the characteristic of rapid demagnetization of the semi-permanent magnetic material is utilized, the resistance of magnetic attraction force to switching off movement during switching off is rapidly reduced, and switching off failure caused by rebound phenomenon occurring during combined action of the electromagnetic repulsion force mechanism and the permanent magnetic mechanism is avoided. When the opening is about to be in place, the hydraulic reducing buffer device is utilized for buffering, so that the kinetic energy of the impact of the switching mechanism is reduced, and the stability and the service life of the switch are improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a medium voltage fast mechanical switch of the present utility model;
FIG. 2 is a schematic diagram of a split gate part structure according to the present utility model;
FIG. 3 is a schematic diagram of the closing portion and the closing/opening state holding device based on semi-permanent magnet material according to the present utility model;
FIG. 4 is a waveform of current in a coil when an electromagnetic repulsion operating mechanism is opened;
FIG. 5 shows the closing coil current of the electromagnetic repulsion force operating mechanism when the switching-on/switching-off state maintaining device is switched off based on the semi-permanent magnet material;
the figure shows:
1. the vacuum interrupter, 2, insulating pull rod, 3, closing part, 3.1, closing coil, 3.2, closing metal repulsion dish, 4, closing state/separating brake state retaining device based on semi permanent magnet material, 4.1, separating brake spring, 4.2, contact spring, 4.3, moving core, 4.4, quiet iron core, 5, separating brake part, 5.1, separating brake coil, 5.2, separating brake metal repulsion dish, 6, hydraulic pressure reducing buffer, 7, motion guide arm, 7.1, boss, 8, moving contact, 9, stationary contact.
Detailed Description
The medium-voltage quick mechanical switch of the scheme has high response speed, high reliability and stability, meets the requirements of a direct-current power distribution system on quick, reliable and stable switching-on and switching-off of the switch equipment, and is described in the following through a specific embodiment for clearly explaining the technical characteristics of the scheme.
The medium-voltage quick mechanical switch shown in fig. 1 comprises a main frame, a fixed contact 9 and a moving contact 8 positioned below the fixed contact 9, wherein the moving contact 8 and the fixed contact 9 are mechanical contacts positioned in a vacuum arc extinguishing chamber 1, and the moving contact is connected to an electromagnetic repulsion force operating mechanism and a closing state/opening state holding device 4 based on a semi-permanent magnet material through an insulating pull rod 2.
The medium-voltage quick mechanical switch of the embodiment further comprises an electromagnetic repulsion force operating mechanism and a switching-on state/switching-off state retaining device 4 which are arranged on the main frame, wherein the electromagnetic repulsion force operating mechanism and the switching-on state/switching-off state retaining device 4 which are based on the semi-permanent magnet material are both positioned below the moving contact.
The electromagnetic repulsion force operating mechanism includes a closing portion 3 located above a closing state/opening state holding device 4 based on a semi-permanent magnet material, and an opening portion 5 located below the closing state/opening state holding device 4 based on a semi-permanent magnet material.
As shown in fig. 3, the closing part 3 comprises a closing coil 3.1 and a closing metal repulsive force disc 3.2 adapted to the closing coil 3.1. As shown in fig. 2, the opening part 5 comprises an opening coil 5.1 and an opening metal repulsive force disc 5.2 matched with the opening coil 5.1. In the working process of the electromagnetic repulsion force operating mechanism, the energy storage capacitor is precharged to a certain voltage, the exciting coil is discharged after the electronic switch of the discharging loop is switched on, the magnetic flux which changes rapidly around the exciting coil generates induction current in the metal disc in the exciting coil, and the induction current is opposite to the direction of the exciting current in the coil, so that the metal repulsion disc in the electromagnetic repulsion force mechanism is pushed to move in the direction away from the brake separating coil, and the rapid brake separating operation is realized.
The switching-on state/switching-off state retaining device 4 based on the semi-permanent magnet material comprises a static iron core 4.4 fixedly connected with a main frame and a movable iron core 4.3 positioned below the static iron core 4.4 and vertically connected with the main frame in a sliding mode, wherein the static iron core 4.4 and the movable iron core 4.3 are connected through a switching-off spring 4.1 vertically arranged, the opposite side faces of the static iron core 4.4 and the movable iron core 4.3 are provided with the semi-permanent magnet material with polarity matching, the switching-off spring 4.1 is compressed when the static iron core and the movable iron core are attracted, and after the semi-permanent magnet material is demagnetized, the movable iron core moves away from the static iron core under the action of the switching-off spring 4.1. The switching-off working process is to apply a certain pulse current to the switching-on coil of the electromagnetic repulsion operating mechanism, so that the semi-permanent magnet material is demagnetized rapidly, and the movable iron core moves downwards under the action of the switching-off spring. According to the current waveform in the coil when the electromagnetic repulsion operating mechanism is switched off shown in fig. 4 and the electromagnetic repulsion operating mechanism switching-on coil current when the switching-on state/switching-off state holding device based on the semi-permanent magnet material is switched off shown in fig. 5, it can be seen that the peak time of the electromagnetic repulsion operating mechanism switching-on coil current reaches 1ms, and the peak time of the electromagnetic repulsion operating mechanism switching-on coil current when the switching-on state/switching-off state holding device based on the semi-permanent magnet material is switched off reaches 0.65ms, so that the demagnetization time of the semi-permanent magnet material is very short, the switching-on process is not influenced, and the resistance caused by the magnetic attraction force to the switching-on during switching-off can be effectively reduced.
The moving contact is fixedly connected with the moving guide rod 7 through the insulating pull rod 2, the moving contact 8, the insulating pull rod 2 and the moving guide rod 7 are coaxially arranged, and the moving guide rod is prevented from being electrified through the insulating pull rod. The motion guide rod is connected with the main frame in a sliding way along the vertical direction, the motion guide rod downwards penetrates through the switching-on part, the switching-on state/switching-off state retaining device based on the semi-permanent magnet material and the switching-off part in sequence, the motion guide rod, the switching-on metal repulsion disc and the switching-off metal repulsion disc are fixedly arranged along the vertical direction, the motion guide rod is connected with the movable iron core through a contact spring 4.2 extending along the vertical direction, and when the switching-on metal repulsion disc and the switching-off metal repulsion disc move up and down, the motion guide rod is driven to move up and down, so that the movable contact moves close to or far away from the fixed contact through the force transmission of the insulation pull rod.
In order to conveniently realize the effect of the contact spring 4.2 on the motion guide rod 7 and realize the closing and keep, a boss 7.1 positioned above the contact spring is fixedly arranged on the motion guide rod, the contact spring 4.2 is sleeved on the motion guide rod, the lower end of the contact spring 4.2 is propped against a fixed plate fixed on the bottom surface of a movable iron core, a through hole for the contact spring to pass through is formed in the movable iron core, the fixed plate is positioned at the lower end of the through hole, and the upper end of the contact spring 4.2 is propped against the bottom surface of the boss 7.1.
The bottom surface of quiet iron core is equipped with the upper groove, the top surface of moving the iron core be equipped with the recess relatively of upper groove, the brake release spring cover is established on the motion guide arm, and the internal diameter of brake release spring is greater than the external diameter of boss, the upper end of brake release spring pushes up the top of upper groove, the lower extreme of brake release spring pushes up to the bottom of lower groove. The boss is located in the upper groove, and the lower end of the contact spring is propped against the bottom fixing plate of the lower groove. The upper groove and the lower groove respectively form a hollow part, the moving guide rod downwards passes through the hollow part of the static iron core, the brake separating spring and the contact spring are arranged on the hollow part of the static iron core and are connected in series with the upper side and the lower side of the boss of the moving guide rod, and the joint part above the brake separating repulsive force disc passes through the hollow part of the brake separating coil of the electromagnetic repulsive force operating mechanism.
In order to reduce the impact during opening, the embodiment further comprises a hydraulic reducing buffer device 6 positioned below the motion guide rod, wherein the hydraulic reducing buffer device 6 is a buffer device capable of adjusting damping and can be adjusted according to the buffering requirement, so that the opening buffer of the switch achieves the optimal effect, the hydraulic reducing buffer device adopts the prior art, and specific structures are not repeated. The working principle of the hydraulic reducing buffer device is as follows: the object acting on it is damped by means of hydraulic (e.g. oil pressure) damping, and this damping is adjustable, slowing the object down to a stop, and dissipating the absorbed energy in the form of thermal energy. And (5) putting the hydraulic reducing buffer device to perform deceleration buffering.
The switching-on/off method performed by using the medium-voltage quick mechanical switch in the embodiment comprises the following steps:
1. when the switch is opened, the electromagnetic repulsion force operating mechanism and the switch-on state/switch-off state maintaining device based on the semi-permanent magnet material act simultaneously, the time for reaching the peak value of the current of the switch-on coil of the electromagnetic repulsion force operating mechanism is longer than the time for reaching the peak value of the current of the switch-on coil of the electromagnetic repulsion force operating mechanism when the switch-on state/switch-off state maintaining device based on the semi-permanent magnet material is opened, so that the semi-permanent magnet material is demagnetized rapidly, the resistance caused by magnetic attraction force to the switch-on is reduced effectively, and the rapidity, the reliability and the stability of the switch-on are ensured;
an induced current with the opposite direction to the exciting current in the opening coil is generated in the opening metal repulsive force disc of the electromagnetic repulsive force operating mechanism, so that the opening metal repulsive force disc moves towards the direction away from the opening coil, and the moving contact moves away from the fixed contact through the force transmission of the moving guide rod and the insulating pull rod;
a certain pulse current is conducted to a closing coil of the electromagnetic repulsion force operating mechanism, so that the semi-permanent magnet material is demagnetized rapidly, the movable iron core moves downwards under the action of a separating spring, and the contact spring stretches, so that the resistance to downward movement of a moving guide rod is reduced;
when the brake is in place, the hydraulic reducing buffer device is utilized for buffering, so that the kinetic energy of the impact of the switch mechanism is reduced, and the stability and the service life of the switch are improved;
when the brake is opened, the brake opening position is maintained by utilizing a brake opening spring in a brake opening state/brake opening state maintaining device based on a semi-permanent magnet material;
2. when the electromagnetic repulsion force operating mechanism is switched on, current in the opposite direction is conducted to a switching-on coil in the electromagnetic repulsion force operating mechanism, and when switching-on operating force is provided, the semi-permanent magnet material is magnetized, so that the movable iron core overcomes the resistance of the switching-off spring and the contact spring and moves towards the static iron core to conduct attraction, and meanwhile the switching-on repulsion force disc drives the moving guide rod to move upwards, so that the movable contact is in contact with the static contact;
in the switching-on position, the switching-on state/switching-off state retaining device based on the semi-permanent magnet material provides the retaining force necessary for switching on by using the residual magnetic field of the magnetic memory material, and the retaining force is transmitted to the motion guide rod through the contact spring and finally transmitted to the moving contact of the arc extinguishing chamber.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (5)
1. The utility model provides a quick mechanical switch of middling pressure, includes main frame, stationary contact to and be located the moving contact of stationary contact below, its characterized in that: the electromagnetic repulsion force operating mechanism and the switching-on state/switching-off state retaining device based on the semi-permanent magnet material are both positioned below the movable contact;
the electromagnetic repulsion force operating mechanism comprises a closing part positioned above a closing state/opening state retaining device based on the semi-permanent magnet material and an opening part positioned below the closing state/opening state retaining device based on the semi-permanent magnet material;
the switching-on part comprises a switching-on coil and a switching-on metal repulsive force disc matched with the switching-on coil;
the brake separating part comprises a brake separating coil and a brake separating metal repulsive disc matched with the brake separating coil;
the switching-on state/switching-off state maintaining device based on the semi-permanent magnet material comprises a static iron core fixedly connected with the main frame, and a movable iron core which is positioned below the static iron core and is in sliding connection with the main frame along the vertical direction, wherein the static iron core is connected with the movable iron core through a switching-off spring arranged along the vertical direction, and the opposite side surfaces of the static iron core and the movable iron core are provided with the semi-permanent magnet material with polarity matching;
the movable contact is fixedly connected with a movable guide rod through an insulating pull rod, the movable guide rod is in vertical sliding connection with the main frame, the movable guide rod downwards sequentially penetrates through a closing part, a closing state/opening state retaining device based on semi-permanent magnet materials and an opening part, the movable guide rod is fixedly arranged relative to a closing metal repulsive force disc and an opening metal repulsive force disc along the vertical direction, and the movable guide rod is connected with the movable iron core through a contact spring extending along the vertical direction.
2. A medium voltage fast mechanical switch according to claim 1, characterized in that: the hydraulic reducing buffer device is positioned below the motion guide rod.
3. A medium voltage fast mechanical switch according to claim 1, characterized in that: the movable iron core is characterized in that a boss positioned above the contact spring is fixedly arranged on the movable guide rod, the contact spring is sleeved on the movable guide rod, the lower end of the contact spring is propped against a fixed plate fixed on the bottom surface of the movable iron core, and the upper end of the contact spring is propped against the bottom surface of the boss.
4. A medium voltage fast mechanical switch according to claim 3, characterized in that: the bottom surface of quiet iron core is equipped with the upper groove, the top surface of moving the iron core be equipped with the lower groove that the upper groove is relative, the brake release spring cover is established on the motion guide arm, and the internal diameter of brake release spring is greater than the external diameter of boss, the upper end of brake release spring pushes up the top of upper groove, the lower extreme of brake release spring pushes up to the bottom of lower groove.
5. A medium voltage fast mechanical switch according to claim 4, characterized in that: the boss is located in the upper groove, and the lower end of the contact spring is propped against the bottom of the lower groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322082364.6U CN220731405U (en) | 2023-08-04 | 2023-08-04 | Medium-voltage quick mechanical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322082364.6U CN220731405U (en) | 2023-08-04 | 2023-08-04 | Medium-voltage quick mechanical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220731405U true CN220731405U (en) | 2024-04-05 |
Family
ID=90494145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322082364.6U Active CN220731405U (en) | 2023-08-04 | 2023-08-04 | Medium-voltage quick mechanical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220731405U (en) |
-
2023
- 2023-08-04 CN CN202322082364.6U patent/CN220731405U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116798804A (en) | Medium-voltage rapid mechanical switch and switching-on and switching-off method | |
| CN201788887U (en) | Direct-acting vacuum breaker equipped with bistable permanent-magnetic operating mechanism | |
| CN110010424B (en) | Quick breaking mechanism based on vortex repulsion principle | |
| CN108933060B (en) | Cascade type long-stroke electromagnetic repulsion mechanism and opening and closing lock catch system | |
| CN113270291B (en) | Shock-resistant quick vacuum switch | |
| US20200075274A1 (en) | High speed switch | |
| CN101203931A (en) | Electromagnetic switching device and operating method | |
| CN101901718A (en) | Direct-acting vacuum circuit breaker with bistable permanent magnet actuators | |
| CN110875162A (en) | Mechanical quick switch based on electromagnetic repulsion mechanism | |
| CN220731405U (en) | Medium-voltage quick mechanical switch | |
| CN113675048A (en) | Permanent magnet and spring bidirectional retaining mechanism | |
| CN218631798U (en) | Switch of direct current breaker and direct current breaker | |
| CN106847606B (en) | A kind of high-voltage circuitbreaker drive part by part permanent-magnet manipulating mechanism and open/close method | |
| CN112951651A (en) | Short-circuit current self-driven quick switch | |
| CN114420513B (en) | Flexible quick breaker driving mechanism | |
| CN110752102A (en) | Bidirectional permanent magnet retaining mechanism | |
| CN113593943A (en) | High-current rapid mechanical switch structure and control method thereof | |
| CN215265988U (en) | Quick switch based on electromagnetic holding device | |
| CN108807097B (en) | Operating mechanism control method, opening and closing drive device and circuit breaker | |
| CN215770986U (en) | Circuit breaker divide-shut brake anti-rebound mechanism | |
| CN214505376U (en) | Circuit that rebounds is prevented in circuit breaker divide-shut brake | |
| CN216773163U (en) | Separating brake buffer device for pole-mounted circuit breaker | |
| CN110112029B (en) | Steep pulse circuit of quick electromagnetic repulsion mechanism | |
| CN116525351B (en) | Short-excitation high-speed vacuum opening and closing device | |
| CN114097054B (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |