CN110112021B - Magnetic switch capable of adjusting arc extinguishing grid sheet interval - Google Patents
Magnetic switch capable of adjusting arc extinguishing grid sheet interval Download PDFInfo
- Publication number
- CN110112021B CN110112021B CN201910390741.8A CN201910390741A CN110112021B CN 110112021 B CN110112021 B CN 110112021B CN 201910390741 A CN201910390741 A CN 201910390741A CN 110112021 B CN110112021 B CN 110112021B
- Authority
- CN
- China
- Prior art keywords
- arc extinguishing
- arc
- spring
- adjusting
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003068 static effect Effects 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 239000010705 motor oil Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 17
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a magnetic switch capable of adjusting the spacing between arc-extinguishing grid plates, relates to the technical field of magnetic switches, and solves the technical problems that the magnetic switch in the prior art has limited and restricted use if the spacing between the arc-extinguishing grid plates and voltage and current are not matched and the arc-extinguishing effect is greatly reduced. The device comprises a shell with an opening at the upper end and an arc extinguishing cover matched with the opening end of the shell; the arc extinguishing cover is movably connected to the open end of the shell; a magnetic control switch device is arranged in the shell, and an arc extinguishing device is arranged on the arc extinguishing cover; the arc extinguishing device comprises a plurality of arc extinguishing grid pieces arranged on the inner side of the arc extinguishing cover, and the distance between the adjacent arc extinguishing grid pieces is adjusted through the distance adjusting device. The invention enlarges the application range of the magnetic switch and can achieve good arc extinguishing effect under a plurality of voltage and current.
Description
Technical Field
The invention relates to a magnetic switch, in particular to a magnetic switch capable of adjusting the distance between arc extinguishing grid pieces.
Background
The magnetic switch is a line switch device controlled by a magnetic field signal, and is also called a magnetic control switch.
Most of the magnetic control switches in the prior art are the combination of an electromagnet and a switch, and the working principle is that after a coil is electrified, electromagnetic force is generated, so that a movable iron core moves to push a switch contact to be connected, the structure is complex, and the failure rate is high; meanwhile, due to a special distribution curve of a magnetic field, the closing speed is reduced in the process that the iron core moves far away from the electromagnet, a large amount of electric arcs are generated, switch contacts are easily burnt at high temperature, the safety of workers is endangered, and the transmission of the switch in the closing and separating processes is not stable enough due to the distribution nonuniformity of magnetic field force.
The arc extinguishing grid is one of the basic methods for extinguishing electric arcs, and is generally made of steel sheets. In an alternating-current low-voltage switching device, when an electric arc is generated between contacts, the electric arc is pulled into an arc extinguishing grid under the action of contraction force of magnetic force lines, and a long arc is divided into a plurality of sections of short arcs; when the alternating current passes through zero, all the short arcs are extinguished at the same time, the initial dielectric strength of 150-250V appears immediately near the cathode of each short arc due to the near-cathode effect, and as long as the sum of the initial dielectric strengths of all the short arcs connected in series is greater than the applied voltage between the contacts, the arcs are not reignited any more, and the arc extinguishing grid pieces are mainly applied to circuit breakers and switches.
The arc extinguishing chamber that constitutes by the arc extinguishing bars piece among the prior art all is the slot of bars piece grafting in arc extinguishing chamber or switch cover inside, this interval that just causes the arc extinguishing bars piece is fixed can not adjust again, and the arc extinguishing effect of such arc extinguishing device can reach best arc extinguishing effect only under specific voltage current condition, this use that just leads to being applied to this kind of arc extinguishing chamber or magnetic switch has received limit and restraint, if the interval between the arc extinguishing bars piece and voltage current mismatch arc extinguishing effect can reduce by a wide margin.
The applicant has found that the prior art has at least the following technical problems:
1. in the magnetic switch in the prior art, if the distance between arc extinguishing grid pieces and the voltage and current are not matched, the arc extinguishing effect is greatly reduced, and the use of the magnetic switch is limited and restricted;
2. in the magnetic switch in the prior art, the closing speed is reduced in the process that the iron core moves away from the electromagnet, and a large amount of electric arcs can be generated;
3. the magnetic switch in the prior art has complex structure and high failure rate
4. The magnetic switch in the prior art is not smooth enough in transmission in the closing and separating processes.
Disclosure of Invention
The invention aims to provide a magnetic switch capable of adjusting the distance between arc-extinguishing grid plates, and aims to solve the technical problems that in the prior art, if the distance between the arc-extinguishing grid plates and the voltage and current are not matched, the arc-extinguishing effect is greatly reduced, and the use of the magnetic switch is limited and restricted. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a magnetic switch capable of adjusting the spacing between arc-extinguishing grid pieces, which comprises a shell with an opening at the upper end and an arc-extinguishing cover matched with the opening end of the shell; the arc extinguishing cover is movably connected to the open end of the shell; a magnetic control switch device is arranged in the shell, and an arc extinguishing device is arranged on the arc extinguishing cover;
the magnetic control switch device comprises a movable contact, a fixed contact and a permanent magnet which are sequentially arranged in a shell, wherein the movable contact and the fixed contact are respectively connected with a connecting terminal extending out of the shell; the static contact is arranged at a position opposite to the movable contact, and the permanent magnet is arranged at a position corresponding to the static contact through a height adjustable mechanism; when the height of the permanent magnet is adjusted to be aligned with the position of the static contact through the height adjustable mechanism, the movable contact is attracted to move to the direction close to the static contact to be contacted with the static contact, and the magnetic control switch device is closed; when the height of the permanent magnet is adjusted to be staggered with the position of the static contact through the height adjustable mechanism, the movable contact moves towards the direction far away from the static contact, and the magnetic control switch device is switched off;
the arc extinguishing device comprises a plurality of arc extinguishing grid pieces arranged on the inner side of the arc extinguishing cover, and the distance between the adjacent arc extinguishing grid pieces is adjusted through the distance adjusting device.
Optionally or preferably, the distance adjusting device comprises an adjusting shaft, a spring baffle, a second spring and a plurality of adjusting blocks arranged between adjacent arc extinguishing grid pieces; wherein,
each adjusting block is fixedly connected with the arc extinguishing cover; the adjusting block comprises an installation plate and step blocks arranged on two sides of the installation plate; the mounting plate is parallel to the arc extinguishing grid sheet; each step block is at least provided with two step planes which are vertical to the horizontal plane and are in a step shape, and a sliding guide inclined plane is arranged between every two adjacent step planes;
the spring baffle is fixedly connected to the inner side of the arc extinguishing cover, and the spring baffle is parallel to the arc extinguishing grid sheet;
each arc extinguishing grid piece and each adjusting block are sleeved on the adjusting shaft, and one end of the adjusting shaft sequentially penetrates through the spring baffle and the arc extinguishing cover and extends out of the outer side of the arc extinguishing cover;
each arc extinguishing grid sheet is fixedly connected with the adjusting shaft;
the positions of the adjusting block, the spring baffle and the arc extinguishing cover corresponding to the installation adjusting shaft are all provided with matched vertical guide grooves, and the positions of the vertical guide grooves correspond to the positions of the stepped blocks; the adjusting shaft sequentially penetrates through the adjusting block, the spring baffle and the vertical guide groove on the arc extinguishing cover and extends out of the outer side of the arc extinguishing cover;
the spring is sleeved on the adjusting shaft, and the spring is located between the spring baffle and the arc extinguishing grid piece close to the spring baffle and is in a compressed state.
Alternatively or preferably, the step blocks on two sides of the mounting plate are arranged in a staggered mode.
Alternatively or preferably, each of the step blocks has four step planes.
Optionally or preferably, each adjusting block is connected to the arc extinguishing cover through a fixed shaft; the top of each mounting plate is provided with a connecting lug, and each connecting lug is provided with a mounting hole; the fixed shaft penetrates through the mounting holes in the mounting plate connecting lugs in sequence, and two ends of the fixed shaft are connected with the arc extinguishing covers respectively.
Optionally or preferably, the movable contact comprises a cylindrical body with an open end and a contact head, the contact head is connected to the open end of the cylindrical body, a cavity is formed between the contact head and the cylindrical body, and viscous liquid is filled in the cavity;
the movable contact is connected to the inner side of the shell through a plunger device;
the plunger device comprises a first spring, a rod body, a first connecting part positioned at one end of the rod body and a second connecting part positioned at the other end of the rod body; the connecting part is connected to the shell; the cylindrical body is sleeved on the rod body in a sliding manner, and the cylindrical body is connected with the rod body in a sealing manner; the second connecting part is connected with the inner wall of the cylindrical body in a sliding and sealing manner, and divides the cavity into two cavities with variable volumes; the second connecting part is provided with a circulation hole for viscous liquid to pass through;
the spring is sleeved on the rod body positioned in the cylindrical body, when the height of the permanent magnet is adjusted to be aligned with the position of the static contact through the height adjustable mechanism, the elastic force of the spring I is smaller than the magnetic force, the movable contact is attracted under the action of the magnetic force to move towards the direction close to the static contact to be contacted with the static contact, and the magnetic control switch device is closed; when the height of the permanent magnet is adjusted to be staggered with the position of the static contact through the height adjusting mechanism, and the elastic force of the first spring is larger than the magnetic force, the movable contact moves towards the direction far away from the static contact under the action of the elastic force of the first spring, and the magnetic control switch device is switched off.
Optionally or preferably, a rubber sheet is further arranged on one side of the second connecting part far away from the first connecting part, and the rubber sheet can cover at least half of the circulation hole.
Alternatively or preferably, the contact head is movably connected to the open end of the barrel.
Alternatively or preferably, the viscous liquid is engine oil.
Optionally or preferably, the height-adjustable mechanism comprises a mounting frame and an elastic pressing structure arranged on the mounting frame, and a pressing end of the elastic pressing structure extends out of the outer side of the arc extinguishing cover; the permanent magnet is installed on the mounting frame.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
(1) according to the magnetic switch capable of adjusting the arc-extinguishing grid piece spacing, the spacing between adjacent arc-extinguishing grid pieces in the arc-extinguishing device can be adjusted through the spacing adjusting device, different spacings between adjacent arc-extinguishing grid pieces can correspond to different voltage and current applications and can achieve the best arc-extinguishing effect, the spacing between adjacent arc-extinguishing grid pieces and the arc-extinguishing effect caused by voltage and current mismatching can be greatly reduced, and the application range of the magnetic switch is expanded;
(2) according to the magnetic switch capable of adjusting the arc extinguishing grid piece spacing, the height adjustable mechanism controls the permanent magnet of the fixed contact to move up and down, so that the relative distance between the permanent magnet and the movable contact of the movable contact is changed, the attraction of the permanent magnet to the movable contact is changed, and the movable contact moves left and right under the action of the spring and the permanent magnet to realize the opening and closing of the switch; the movable contact can be quickly attracted under the action of the magnet, the closing time of the switch is shortened, and the generation of electric arcs can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an external structural view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is a schematic view showing the internal structure of the arc-extinguishing cover in the embodiment of the present invention;
FIG. 4 is a schematic diagram of a connection structure of an arc chute and an adjusting block in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a conditioning block in an embodiment of the present invention;
FIG. 6 is a top view of an adjustment block in an embodiment of the present invention;
FIG. 7 is a diagram showing the effect of the adjustment block being inserted in a staggered manner and the state of the arc extinguishing grid plate abutting against the lowest step plane of the adjustment block in the embodiment of the present invention;
FIG. 8 is a schematic view of the mounting positions of the moving and stationary contacts in an implementation of the invention;
FIG. 9 is a schematic view showing the installation positions of the moving contact, the stationary contact and the permanent magnet in the implementation of the invention;
FIG. 10 is a schematic illustration of the construction of a plug assembly in the practice of the invention;
FIG. 11 is a schematic view of another angled configuration of a plug assembly in the practice of the invention;
fig. 12 is a schematic illustration of the filling of a viscous liquid in the practice of the invention.
In the figure: 1. a housing; 2. an arc extinguishing cover; 3. moving the contact; 301. a cylindrical body; 302. a contact head; 4. a stationary contact; 5. a permanent magnet; 6. a wiring terminal; 7. arc extinguishing grid pieces; 8. an adjustment shaft; 9. a spring baffle; 10. a second spring; 11. an adjusting block; 1101. mounting a plate; 1102. a step block; 11021. a step plane; 11022. a sliding guide slope; 1103. a connecting lug; 12. a vertical guide groove; 13. an adjustment handle; 14. flow aperture 1401, aperture one; 1402. a second hole; 1403. a third hole; 15. a viscous liquid; 16. a rubber sheet; 17. pressing the shaft; 18. a chute cap; 19. a turntable; 20. a third spring; 21. a guide post; 22. a limiting cylinder; 23. a fixed shaft; 24. a grid baffle; 25. a plunger device; 2501. a first spring; 2502. a rod body; 2503. a first connecting part; 2504. a second connecting part; 27. a mounting frame; 28. a cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1-12:
the invention provides a magnetic switch capable of adjusting the distance between arc extinguishing grid pieces 7, which comprises a shell 1 with an opening at the upper end and an arc extinguishing cover 2 matched with the opening end of the shell 1; the arc extinguishing cover 2 is movably connected with the open end of the shell 1; a magnetic control switch device is arranged in the shell 1, and an arc extinguishing device is arranged on the arc extinguishing cover 2;
the magnetic control switch device comprises a movable contact 3, a fixed contact 4 and a permanent magnet 5 which are sequentially arranged in a shell 1, wherein the movable contact 3 and the fixed contact 4 are respectively connected with a wiring terminal 6 extending out of the shell 1; the static contact 4 is arranged at a position right opposite to the movable contact 3, and the permanent magnet 5 is arranged at a position corresponding to the static contact 4 through a height adjustable mechanism; when the height of the permanent magnet 5 is adjusted to be aligned with the position of the static contact 4 through the height adjustable mechanism, the movable contact 3 is attracted to move towards the direction close to the static contact 4 to be contacted with the static contact 4, and the magnetic control switch device is closed; when the height of the permanent magnet 5 is adjusted to be staggered with the position of the static contact 4 through the height adjustable mechanism, the movable contact 3 moves towards the direction far away from the static contact 4, and the magnetic control switch device is switched off;
the arc extinguishing device comprises a plurality of arc extinguishing grid pieces 7 arranged on the inner side of the arc extinguishing cover 2, and the distance between the adjacent arc extinguishing grid pieces 7 is adjusted through a distance adjusting device.
According to the magnetic switch capable of adjusting the distance between the arc-extinguishing grid plates 7, the distance between the adjacent arc-extinguishing grid plates 7 in the arc-extinguishing device can be adjusted through the distance adjusting device, different distances between the adjacent arc-extinguishing grid plates 7 can correspond to different voltage and current applications and can achieve the best arc-extinguishing effect, the arc-extinguishing effect caused by mismatching of the distance between the adjacent arc-extinguishing grid plates 7 and the voltage and current can be greatly reduced, and the application range of the magnetic switch is expanded; according to the magnetic switch capable of adjusting the distance between the arc extinguishing grid pieces 7, the height adjustable mechanism controls the permanent magnet 5 of the fixed contact 4 to move up and down, so that the relative distance between the permanent magnet 5 and the movable contact 3 of the movable contact 3 is changed, the attraction of the permanent magnet 5 to the movable contact 3 is changed, and the movable contact 3 moves left and right under the action of the spring and the permanent magnet 5 to realize the opening and closing of the switch; the movable contact 3 can be quickly attracted under the action of the magnet, the closing time of the switch is shortened, and the generation of electric arcs can be reduced.
As an optional embodiment, the distance adjusting device comprises an adjusting shaft 8, a spring baffle 9, a second spring 10 and a plurality of adjusting blocks 11 arranged between adjacent arc chute pieces 7; wherein,
each adjusting block 11 is fixedly connected with the arc extinguishing cover 2; the adjusting block 11 comprises a mounting plate 1101 and step blocks 1102 arranged on two sides of the mounting plate 1101; the mounting plate 1101 is parallel to the arc extinguishing grid 7; each step block 1102 is at least provided with two step planes 11021 which are vertical to the horizontal plane and are in a step shape, and a sliding guide inclined plane 11022 is arranged between every two adjacent step planes 11021;
the spring baffle 9 is fixedly connected to the inner side of the arc extinguishing cover 2, and the spring baffle 9 is parallel to the arc extinguishing grid sheet 7;
each arc extinguishing grid plate 7 and each adjusting block 11 are sleeved on the adjusting shaft 8, and one end of the adjusting shaft 8 sequentially penetrates through the spring baffle 9 and the arc extinguishing cover 2 and extends out of the arc extinguishing cover 2;
each arc extinguishing grid 7 is fixedly connected with the adjusting shaft 8;
the arc extinguishing grid plate comprises a spring baffle plate 9, a grid plate baffle plate 24 and a grid plate baffle plate 24, wherein the grid plate baffle plate 24 is arranged on one side of the arc extinguishing grid plate 7, which is far away from the spring baffle plate 9, and the grid plate baffle plate 24 is used for fixing an adjusting block 11 and the grid plate baffle plate 24;
the positions of the grid baffle plate 24, the adjusting block 11, the spring baffle plate 9 and the arc extinguishing cover 2 corresponding to the installation adjusting shaft 8 are all provided with matched vertical guide grooves 12, and the positions of the vertical guide grooves 12 correspond to the positions of the step blocks 1102; the adjusting shaft 8 sequentially penetrates through the grid baffle plate 24, the adjusting block 11, the spring baffle plate 9 and the vertical guide groove 12 on the arc extinguishing cover 2 and extends out of the outer side of the arc extinguishing cover 2;
the second spring 10 is sleeved on the adjusting shaft 8, and the second spring 10 is located between the spring baffle 9 and the arc extinguishing grid plate 7 close to the spring baffle 9 and is in a compressed state. Of course, both ends of the adjusting shaft 8 may extend out of the outer side of the arc extinguishing cover 2, and the distance between the arc extinguishing grid pieces 7 may be adjusted by the two ends of the adjusting shaft 8.
As an alternative embodiment, an end of the adjusting shaft 8 extending out of the arc extinguishing cover 2 is sleeved with an adjusting handle 13.
In the using process, the arc extinguishing grid piece 7 can be moved up and down along the step plane 11021 of the step block 1102 by moving the adjusting handle 13; the sliding guide inclined plane 11022 is arranged, so that the arc extinguishing grid 7 can be conveniently switched between two adjacent stepped planes 11021; the second spring 10 can enable all the arc-extinguishing grid plates 7 to be always attached to the step plane 11021 of the corresponding adjusting block 11, and the step block 1102 on the adjusting block 11 is provided with at least two step planes 11021 vertical to the horizontal plane, namely, at least two gaps can be formed between the adjacent arc-extinguishing grid plates 7; during adjustment, due to the action of the second spring 10, two adjacent arc-extinguishing grid plates 7 are attached to and pressed on the stepped plane 11021 of the same adjusting block 11, and due to the fact that the stepped plane 11021 is arranged in a stepped mode, the distance between two adjacent arc-extinguishing grid plates 7 can be adjusted; the arc-extinguishing grid pieces 7 move downwards and simultaneously cling to step planes with different heights to reduce the distance between the two arc-extinguishing grid pieces 7; the sliding guide ramp 11022 ensures that the arc chute 7 can move upwards excessively and upwards when moving upwards. When the adjusting handle 13 is pulled, the adjusting shaft 8 will move along the grid baffle 24, the adjusting block 11, the spring baffle 9 and the vertical guide groove 12 on the arc-extinguishing cover 2 until the arc-extinguishing grid 7 reaches the required position of the step plane 11021. In order to facilitate the adjustment of the distance between the arc-extinguishing grid pieces 7 by the adjusting handle 13, the length of the adjusting handle 13 can be set to be smaller, so that the arc-extinguishing grid pieces 7 can be conveniently grasped by hands to be conveniently adjusted; the two ends of the adjusting shaft 8 can be set to extend out of the outer side of the arc extinguishing cover 2 (the setting position of the adjusting shaft 8 needs to be wound around the pressing shaft 17), the two ends of the adjusting shaft 8 extending out of the arc extinguishing cover 2 are sleeved with the adjusting handles 13, and then the distance between the arc extinguishing grid pieces 7 is adjusted through the adjusting handles 13 at the two ends.
As an alternative embodiment, the stepped blocks 1102 on both sides of the mounting plate 1101 are arranged in a staggered manner; the distance between the arc extinguishing grid pieces 7 can be adjusted more conveniently, and the shifting of the adjusting handle 13 is smoother.
As an alternative embodiment, each of the step blocks 1102 has four step planes 11021. Namely, the four adjacent arc-extinguishing grid pieces 7 have four intervals, so that the magnetic switch can be used under four different voltage currents and has a good arc-extinguishing effect, and the application range of the magnetic switch is expanded; of course, more stepped planes 11021 may be provided as desired.
As an alternative embodiment, each adjusting block 11 is connected to the arc extinguishing cover 2 through a fixed shaft 23; the top of each mounting plate 1101 is provided with a connecting lug 1103, and each connecting lug 1103 is provided with a mounting hole; the fixing shaft 23 sequentially passes through the mounting holes of the connecting lugs 1103 of each mounting plate 1101, and both ends of the fixing shaft 23 are respectively connected with the arc extinguishing cover 2.
As an alternative embodiment, the housing 1 and the arc extinguishing cover 2 are connected by bolts. Specifically, a mounting hole may be formed in a position of the housing 1 corresponding to the arc extinguishing cover 2, and the housing and the arc extinguishing cover are connected by a bolt (not shown in the drawings); and the joint of the arc-extinguishing cover 2 and the shell 1 can be sealed by adding a sealing strip or sealing glue.
As an alternative embodiment, the moving contact 3 includes a cylinder 301 with an open end and a contact head 302, the contact head 302 is connected to the open end of the cylinder 301, a cavity is formed between the contact head 302 and the cylinder 301, and the cavity is filled with the viscous liquid 15;
the moving contact 3 is connected to the inner side of the shell 1 through a plunger device 25;
the plunger device 25 comprises a first spring 2501, a rod 2502, a first connecting part 2503 positioned at one end of the rod 2502 and a second connecting part 2504 positioned at the other end of the rod 2502; the first connecting part 2503 is connected to the shell 1; the cylindrical body 301 is slidably sleeved on the rod body 2502, and the cylindrical body 301 is hermetically connected with the rod body 2502; the second connecting part 2504 is connected with the inner wall of the cylindrical body 301 in a sliding and sealing mode, and divides the cavity into two cavities 28 with variable volumes; the second connecting part 2504 is provided with a flow hole 14 for the viscous liquid 15 to pass through;
the first spring 2501 is sleeved on the rod body 2502 positioned in the cylindrical body 301, when the height of the permanent magnet 5 is adjusted to be aligned with the position of the static contact 4 through the height adjustable mechanism, the elastic force of the first spring 2501 is smaller than the magnetic force, the movable contact 3 is attracted under the action of the magnetic force to move towards the direction close to the static contact 4 to be contacted with the static contact 4, and the magnetic control switch device is closed; when the height of the permanent magnet 5 is adjusted to be staggered with the position of the static contact 4 through the height adjusting mechanism, and the elastic force of the first spring 2501 is larger than the magnetic force, the movable contact 3 moves towards the direction far away from the static contact 4 under the action of the elastic force of the first spring 2501, and the magnetic control switch device is switched off.
The connection mode of the movable contact 3 and one of the connecting terminals 6 is as follows: one of the terminals 6 is electrically connected to the plunger device 25, and is electrically connected to the movable contact 3 through the plunger device 25.
As an alternative embodiment, the first connecting portion 2503 is bolted to the inner wall of the housing 1 (not shown in the drawings).
In an alternative embodiment, the side of the second connecting portion 2504 away from the first connecting portion 2503 is further provided with a rubber sheet 16, and the rubber sheet 16 can cover at least half of the flow through hole 14.
As an alternative embodiment, the second connecting part 2504 is a circular plate shape matched with the cylindrical body 301, and a plurality of flow holes 14 are formed in the second connecting part 2504;
as an optional embodiment, the flow hole 14 comprises a first hole 1401, a second hole 1402 and a third hole 1403, and the first hole 1401, the second hole 1402 and the third hole 1403 are all round holes;
the circle centers of the first holes 1401 are all located on a circle which takes the circle center of the second connecting part 2504 as the circle center and takes r1 as the radius;
the circle centers of the second holes 1402 are all located on a circle which takes the circle center of the second connecting portion 2504 as the circle center and takes r2 as the radius;
the circle centers of the third holes 1403 are all located on a circle which takes the circle center of the second connecting part 2504 as the circle center and takes r3 as the radius;
r1 < R2 < R3 < R (R is the radius of the connecting part II 2504);
of course, the shape and the position of the first hole 1401, the second hole 1402, and the third hole 1403 are not limited to those disclosed in the present invention, and may be any shape such as an elliptical hole, a rectangular hole, or the like, as long as it functions to allow the viscous liquid 15 to pass therethrough.
As an alternative embodiment, the rubber sheet 16 covers both holes one 1401 and two 1402 (i.e. covering 2/3 the flow-through holes 14); the middle part of the rubber sheet 16 is fixed on the second connecting part 2504.
When the permanent magnet 5 moves to a position opposite to the static contact 4, the magnetic force is larger than the elastic force of the first spring 2501, the movable contact 3 is attracted and contacted with the static contact 4, the movable contact 3 moves to the right side under the action of the magnetic force, the engine oil is extruded to move to the cavity on the right side, and the engine oil impacts the rubber sheet 16 to deform so that all the holes I1401, II 1402 and III 1403 are penetrated by the engine oil; after the elastic push switch permanent magnet 5 is pushed to move downwards, the elastic force of the first spring 2501 is larger than the magnetic force, the movable contact 3 moves leftwards, and the rubber slide is supported by the plane of the second connecting part 2504 at the back and cannot be deformed, and only the oil in the third hole 1403 can pass through. In the switch closing stage, because the contact with the static electrode needs to be quickly realized, three circulation holes 14 for oil to pass through are arranged in a hole I1401, a hole II 1402 and a hole III 1403, the quick closing of the magnetic switch is enhanced by the circulation holes 14, the switch closing period is shortened, and the generation of electric arcs can be reduced. When the switch is disconnected, only three 1403 circles of circulation holes 14 are formed, reciprocating motion can be performed due to the fact that the elastic force of the first spring 2501 is not stable constant force, a circle of circulation holes 14 can play a certain damping effect, the circulation holes are enabled to stably transmit and directly stop at the end point without performing reciprocating motion, mistaken contact can be avoided, and reliability and safety of the magnetic switch are improved.
As an alternative embodiment, the contact head 302 is articulated to the open end of the cylinder 301. When the contact head 302 is burnt out by electric arc generated in the use process of the magnetic switch, the contact head 302 can be replaced, so that the whole magnetic switch is prevented from being damaged, and the cost can be saved by replacing the whole magnetic switch.
As an alternative embodiment, the contact head 302 is threaded into the open end of the barrel 301.
As an alternative embodiment, the viscous liquid 15 is oil. Of course, the viscous liquid 15 is not limited to the engine oil disclosed in the present invention, and may be other non-conductive viscous liquids 15.
As an alternative embodiment, the height-adjustable mechanism comprises a mounting frame 27 and an elastic pressing structure arranged on the mounting frame 27, and a pressing end of the elastic pressing structure extends out of the outer side of the arc extinguishing cover 2; the permanent magnet 5 is mounted on a mounting bracket 27.
As an alternative embodiment, the elastic pressing structure adopts a ball pen type pressing structure, the elastic pressing structure comprises a pressing shaft 17, a sliding groove cap 18, a rotating disc 19, a third spring 20, a guide column 21 and a limiting cylinder 22, the pressing end of the pressing shaft 17 extends out of the arc extinguishing cover 2, the guide column 21 is inserted in the limiting cylinder 22 in a sliding manner, and the elastic pressing structure is a structure in the prior art and will not be described in detail herein.
When the elastic pressing structure is used, after the pressing end is pressed for the first time, when the height of the permanent magnet 5 is aligned with the position of the static contact 4, the elastic force of the first spring 2501 is smaller than the magnetic force, the movable contact 3 is attracted under the action of the magnetic force and moves towards the direction close to the static contact 4 to be contacted with the static contact 4, and the magnetic control switch device is closed; when the pressing end is pressed again, the height of the permanent magnet 5 is staggered with the position of the fixed contact 4, and the elastic force of the first spring 2501 is larger than the magnetic force, the movable contact 3 moves towards the direction far away from the fixed contact 4 under the action of the elastic force of the first spring 2501, and the magnetic control switch device is switched off.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (9)
1. The utility model provides a magnetic switch of adjustable arc extinguishing bars piece interval which characterized in that: comprises a shell with an opening at the upper end and an arc extinguishing cover matched with the opening end of the shell; the arc extinguishing cover is movably connected to the open end of the shell; a magnetic control switch device is arranged in the shell, and an arc extinguishing device is arranged on the arc extinguishing cover;
the magnetic control switch device comprises a movable contact, a fixed contact and a permanent magnet which are sequentially arranged in a shell, wherein the movable contact and the fixed contact are respectively connected with a connecting terminal extending out of the shell; the static contact is arranged at a position opposite to the movable contact, and the permanent magnet is arranged at a position corresponding to the static contact through a height adjustable mechanism; when the height of the permanent magnet is adjusted to be aligned with the position of the static contact through the height adjustable mechanism, the movable contact is attracted to move to the direction close to the static contact to be contacted with the static contact, and the magnetic control switch device is closed; when the height of the permanent magnet is adjusted to be staggered with the position of the static contact through the height adjustable mechanism, the movable contact moves towards the direction far away from the static contact, and the magnetic control switch device is switched off;
the arc extinguishing device comprises a plurality of arc extinguishing grid pieces arranged on the inner side of the arc extinguishing cover, and the distance between every two adjacent arc extinguishing grid pieces is adjusted through a distance adjusting device;
the distance adjusting device comprises an adjusting shaft, a spring baffle, a second spring and a plurality of adjusting blocks arranged between adjacent arc extinguishing grid pieces; wherein,
each adjusting block is fixedly connected with the arc extinguishing cover; the adjusting block comprises an installation plate and step blocks arranged on two sides of the installation plate; the mounting plate is parallel to the arc extinguishing grid sheet; each step block is at least provided with two step planes which are vertical to the horizontal plane and are in a step shape, and a sliding guide inclined plane is arranged between every two adjacent step planes;
the spring baffle is fixedly connected to the inner side of the arc extinguishing cover, and the spring baffle is parallel to the arc extinguishing grid sheet;
each arc extinguishing grid piece and each adjusting block are sleeved on the adjusting shaft, and one end of the adjusting shaft sequentially penetrates through the spring baffle and the arc extinguishing cover and extends out of the outer side of the arc extinguishing cover;
each arc extinguishing grid sheet is fixedly connected with the adjusting shaft;
the positions of the adjusting block, the spring baffle and the arc extinguishing cover corresponding to the installation adjusting shaft are all provided with matched vertical guide grooves, and the positions of the vertical guide grooves correspond to the positions of the stepped blocks; the adjusting shaft sequentially penetrates through the adjusting block, the spring baffle and the vertical guide groove on the arc extinguishing cover and extends out of the outer side of the arc extinguishing cover;
the spring is sleeved on the adjusting shaft, and the spring is located between the spring baffle and the arc extinguishing grid piece close to the spring baffle and is in a compressed state.
2. The adjustable arc chute piece spacing magnetic switch of claim 1, wherein: the step blocks on the two sides of the mounting plate are arranged in a staggered mode.
3. The adjustable arc chute piece spacing magnetic switch of claim 2, wherein: each step block has four step planes.
4. The adjustable arc chute piece spacing magnetic switch of claim 3, wherein: each adjusting block is connected to the arc extinguishing cover through a fixing shaft; the top of each mounting plate is provided with a connecting lug, and each connecting lug is provided with a mounting hole; the fixed shaft penetrates through the mounting holes in the mounting plate connecting lugs in sequence, and two ends of the fixed shaft are connected with the arc extinguishing covers respectively.
5. The magnetic switch of any one of claims 1 to 4, wherein: the movable contact comprises a cylindrical body with an open end and a contact head, the contact head is connected with the open end of the cylindrical body, a cavity is arranged between the contact head and the cylindrical body, and viscous liquid is filled in the cavity;
the movable contact is connected to the inner side of the shell through a plunger device;
the plunger device comprises a first spring, a rod body, a first connecting part positioned at one end of the rod body and a second connecting part positioned at the other end of the rod body; the connecting part is connected to the shell; the cylindrical body is sleeved on the rod body in a sliding manner, and the cylindrical body is connected with the rod body in a sealing manner; the second connecting part is connected with the inner wall of the cylindrical body in a sliding and sealing manner, and divides the cavity into two cavities with variable volumes; the second connecting part is provided with a circulation hole for viscous liquid to pass through;
the spring is sleeved on the rod body positioned in the cylindrical body, when the height of the permanent magnet is adjusted to be aligned with the position of the static contact through the height adjustable mechanism, the elastic force of the spring I is smaller than the magnetic force, the movable contact is attracted under the action of the magnetic force to move towards the direction close to the static contact to be contacted with the static contact, and the magnetic control switch device is closed; when the height of the permanent magnet is adjusted to be staggered with the position of the static contact through the height adjusting mechanism, and the elastic force of the first spring is larger than the magnetic force, the movable contact moves towards the direction far away from the static contact under the action of the elastic force of the first spring, and the magnetic control switch device is switched off.
6. The adjustable arc chute piece spacing magnetic switch of claim 5, wherein: and a rubber sheet is further arranged on one side, away from the first connecting part, of the second connecting part and can at least cover a half of the circulation hole.
7. The adjustable arc chute piece spacing magnetic switch of claim 6, wherein: the contact head is movably connected with the open end of the cylindrical body.
8. The adjustable arc chute piece spacing magnetic switch of claim 7, wherein: the viscous liquid is engine oil.
9. The adjustable arc chute piece spacing magnetic switch of claim 8, wherein: the height-adjustable mechanism comprises an installation frame and an elastic pressing structure arranged on the installation frame, and a pressing end of the elastic pressing structure extends out of the outer side of the arc extinguishing cover; the permanent magnet is installed on the mounting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390741.8A CN110112021B (en) | 2019-05-10 | 2019-05-10 | Magnetic switch capable of adjusting arc extinguishing grid sheet interval |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390741.8A CN110112021B (en) | 2019-05-10 | 2019-05-10 | Magnetic switch capable of adjusting arc extinguishing grid sheet interval |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110112021A CN110112021A (en) | 2019-08-09 |
| CN110112021B true CN110112021B (en) | 2021-02-19 |
Family
ID=67489537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910390741.8A Active CN110112021B (en) | 2019-05-10 | 2019-05-10 | Magnetic switch capable of adjusting arc extinguishing grid sheet interval |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112021B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564720B (en) * | 2019-09-04 | 2021-02-23 | 北京中科医学检验实验室有限公司 | DNA extraction method |
| CN114068239B (en) * | 2021-11-10 | 2022-12-06 | 深圳市美韵声科技有限公司 | Intelligent breaker for safe closing of power consumption of power distribution system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165524Y (en) * | 1993-08-11 | 1994-05-18 | 孙淑清 | Large capacity demagnetization switch |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2538785C2 (en) * | 2009-09-18 | 2015-01-10 | Шнейдер Электрик Эндюстри Сас | Single-pole disconnecting device comprising rotatable contacting bridge, commutation switch with this device as well as circuit breaker with this commutation switch |
| FR2977067B1 (en) * | 2011-06-27 | 2016-12-30 | Schneider Electric Ind Sas | ARC GUIDING DEVICE IN AN ELECTRICAL PROTECTION APPARATUS AND ELECTRICAL PROTECTION APPARATUS COMPRISING SUCH A DEVICE |
| CN103531412B (en) * | 2013-10-28 | 2016-01-20 | 江苏凯隆电器有限公司 | Arc extinguishing system of circuit breaker |
| CN104835666A (en) * | 2015-05-25 | 2015-08-12 | 德力西电气有限公司 | Arc extinguish chute, arc extinguish chamber and breaker |
| CN105405707B (en) * | 2015-12-03 | 2018-04-03 | 上海天灵开关厂有限公司 | Gas insulated load switch and its arc-control device |
| CN205583508U (en) * | 2016-03-02 | 2016-09-14 | 徐莹 | Looped netowrk cabinet control switch's arc extinguishing structure |
| CN106847583A (en) * | 2017-03-03 | 2017-06-13 | 上海学超信息科技有限公司 | A kind of arc-chute of non-isometric compact structure |
-
2019
- 2019-05-10 CN CN201910390741.8A patent/CN110112021B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165524Y (en) * | 1993-08-11 | 1994-05-18 | 孙淑清 | Large capacity demagnetization switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110112021A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110112021B (en) | Magnetic switch capable of adjusting arc extinguishing grid sheet interval | |
| WO2016058550A1 (en) | Ultra-high-speed mechanical switch | |
| CN108878199B (en) | Press-type multi-contact switching current buffer switch | |
| US2561450A (en) | Electric switch | |
| CN112309776A (en) | High-voltage direct-current relay with auxiliary contacts | |
| RU183852U1 (en) | Electromagnetic switchgear | |
| CN208045411U (en) | A kind of high-voltage DC contactor | |
| CN108400061B (en) | High-voltage DC on-off device | |
| CN110896005A (en) | Vacuum circuit breaker signal feedback mechanism | |
| CN201936804U (en) | Three-position vacuum switch tube | |
| CN203351490U (en) | Permanent magnet drive oil immersion vacuum circuit breaker arranged in 10 kV oil immersion transformer | |
| CN108878211B (en) | Synchronous mechanism of high-voltage double-break breaker | |
| CN109036952B (en) | Switching brake accelerating mechanism of vacuum circuit breaker | |
| CN201478192U (en) | Direct-connected permanent magnet vacuum switch | |
| CN107359081B (en) | A kind of method and switching device of motor driven bridging contact on-load switch | |
| CN114783816B (en) | Circuit breaker | |
| CN210349688U (en) | Vacuum switch used in flexible direct-current extra-high voltage power transmission system | |
| CN210866009U (en) | Sliding switch | |
| CN208061980U (en) | High voltage direct current break-make device anti-deflection mechanism and high voltage direct current break-make device | |
| CN216719816U (en) | Double-station switch device for capacity-regulating tap switch | |
| KR101697627B1 (en) | Gas circuit breaker for gas insulated switchgear | |
| CN219979467U (en) | Relay device | |
| CN113990709B (en) | New energy high-voltage direct-current relay based on three-section separation | |
| CN112133592B (en) | Quick cut-off type arc extinguishing switch | |
| CN111525396B (en) | Power grid grounding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |