CN213938472U - Flow-sensitive resonance elimination device - Google Patents
Flow-sensitive resonance elimination device Download PDFInfo
- Publication number
- CN213938472U CN213938472U CN202022631584.6U CN202022631584U CN213938472U CN 213938472 U CN213938472 U CN 213938472U CN 202022631584 U CN202022631584 U CN 202022631584U CN 213938472 U CN213938472 U CN 213938472U
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- China
- Prior art keywords
- fixedly connected
- rear cover
- rectangular shell
- rear side
- harmonic elimination
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Abstract
The utility model discloses a flow-sensitive harmonic elimination device, which relates to the field of harmonic elimination devices and comprises a front plate, a rectangular shell and a U-shaped rear cover, wherein the front surface of the front plate is provided with a control mechanism, the periphery of the rear side of the front plate is fixedly connected with the rectangular shell, a harmonic elimination assembly is arranged inside the rectangular shell and is connected with the front plate through a buffer mechanism, the U-shaped rear cover is movably sleeved outside the rectangular shell, the rear side of the U-shaped rear cover is provided with a heat dissipation mechanism, and the front plate is fixedly connected with the U-shaped rear cover through a fixing mechanism; the fixing mechanism comprises two first fixing plates and two second fixing plates, the two first fixing plates are fixedly connected with the left side and the right side of the front plate respectively, and the two second fixing plates are fixedly connected with the front ends of the left side and the right side of the U-shaped rear cover respectively. The utility model discloses be convenient for dismantle the shell of device to be convenient for maintain the harmonic elimination subassembly, and be convenient for carry out buffer protection to the harmonic elimination subassembly, avoid the harmonic elimination subassembly to receive the damage when removing, the people of being convenient for use.
Description
Technical Field
The utility model relates to a harmonic elimination device field, in particular to flow sensitive harmonic elimination device.
Background
The system below 35kV in China mostly adopts a power supply neutral point ungrounded operation mode, a primary winding of an electromagnetic voltage transformer on a bus becomes a unique metal channel of a neutral point ungrounded power grid to the ground, and a charging and discharging path of the power grid relative to the ground capacitor is bound to pass through the primary winding of the voltage transformer. When the system is earthed in a single phase, a capacitance current flows through a fault point, the voltage of a healthy phase rises to a line voltage, the earth capacitance of the healthy phase is charged with charges corresponding to the line voltage, once the earth fault disappears, a current path is cut off, the voltage of an ungrounded phase is required to be instantly restored to a normal phase voltage level, but as the earth fault is cut off, the charges of the ungrounded phase which is charged to the line voltage in the earthing period are only fed into the ground through a high-voltage winding of the voltage transformer through an original earthed neutral point, inrush current with the amplitude of a plurality of amperes appears in a primary winding of the voltage transformer, a high-voltage fuse of the voltage transformer is fused, in the transient process, a low-frequency saturated current with the high amplitude flows in the high-voltage winding of the voltage transformer, the iron core of the voltage transformer is seriously saturated, the excitation inductance of the saturated voltage transformer becomes small, the system network tends to be inductive to the earth resistance, and if the earth inductance of the system network is matched with the earth capacitance, a three-phase or single-phase resonance loop is formed, and various ferromagnetic resonance overvoltage can be excited.
At present, the shell of the harmonic elimination device is generally of an integral fixing structure, the fixing mechanism is complex, and when the line outgoing inside the harmonic elimination device is damaged, workers are not prone to detaching and maintaining the device, so that normal use of the device is affected.
Therefore, it is necessary to invent a flow-sensitive resonance elimination device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flow sensitive type harmonic elimination device to the shell of the harmonic elimination device that proposes in solving above-mentioned background art generally is whole fixed knot structure, and fixed establishment is comparatively complicated, when harmonic elimination device is inside to be qualified for the next round of competitions and damages, the workman is difficult to dismantle and maintain the device, thereby influences the problem of the normal use of device.
In order to achieve the above object, the utility model provides a following technical scheme: a flow-sensitive harmonic elimination device comprises a front plate, a rectangular shell and a U-shaped rear cover, wherein a control mechanism is arranged on the front surface of the front plate, the periphery of the rear side of the front plate is fixedly connected with the rectangular shell, a harmonic elimination assembly is arranged inside the rectangular shell, the harmonic elimination assembly is connected with the front plate through a buffer mechanism, the U-shaped rear cover is movably sleeved outside the rectangular shell, a heat dissipation mechanism is arranged on the rear side of the U-shaped rear cover, and the front plate is fixedly connected with the U-shaped rear cover through a fixing mechanism;
the fixing mechanism comprises two first fixing plates and two second fixing plates, wherein the first fixing plates are fixedly connected with the left side and the right side of the front plate respectively, the second fixing plates are fixedly connected with the front ends of the left side and the right side of the U-shaped rear cover respectively, the second fixing plates are fixedly connected with fixing bolts through fixing holes in a movable mode, and thread grooves matched with the fixing bolts are formed in the rear sides of the first fixing plates.
Preferably, the lid is behind the U-shaped about two equal fixedly connected with bar stoppers of two symmetric distributions of back lateral wall, two and bar stopper assorted bar spacing logical grooves have all been seted up to two lateral walls about the rectangular shell.
Preferably, the rear end of the rectangular shell is fixedly connected with an annular rubber pad, and the rear side of the annular rubber pad abuts against the U-shaped rear cover.
Preferably, buffer gear includes the buffer board, the front end fixed connection of buffer board and harmonic elimination subassembly, the surperficial four corners department of buffer board all has the threaded rod through round hole swing joint, and is a plurality of the front end of threaded rod all with front bezel fixed connection, be equipped with a plurality of first springs between buffer board and the front bezel, it is a plurality of first spring cup joints with a plurality of threaded rod activities respectively, and is a plurality of the equal screw thread in pole wall rear side of threaded rod has cup jointed the nut, and is a plurality of be equipped with a plurality of second springs between nut and a plurality of buffer board, and is a plurality of the second spring cup joints with a plurality of threaded rod activities respectively.
Preferably, heat dissipation mechanism includes cooling fan and circular casing, cooling fan is located the fixed setting in circular casing's inside, the rear side fixed connection of lid behind circular casing and the U-shaped, the rear side wall of lid behind the U-shaped seted up with circular casing assorted round mouth, the first dust screen of the inside rear side fixedly connected with of circular casing, a plurality of evenly distributed's fresh air inlet has all been seted up to the upper and lower both sides of rectangle shell, and is a plurality of the equal fixedly connected with second dust screen in inside of fresh air inlet, the rear side fixedly connected with a plurality of evenly distributed's of heating panels of harmonic elimination subassembly.
Preferably, the control mechanism comprises a display panel, a plurality of display lamps and a plurality of control keys, and the display panel, the plurality of display lamps and the plurality of control keys are fixedly connected with the front plate.
The utility model discloses a technological effect and advantage:
1. the U-shaped rear cover is sleeved outside the rectangular shell through the mutual matching of the front plate, the rectangular shell, the U-shaped rear cover, the two first fixing plates and the two second fixing plates, the two first fixing plates correspond to the two second fixing plates respectively, the two first fixing plates can be fixed with the two second fixing plates respectively by using the fixing bolts, so that the U-shaped rear cover and the rectangular shell can be fixed conveniently, and the fixing bolts are disassembled when the U-shaped rear cover and the rectangular shell are disassembled, so that the U-shaped rear cover and the rectangular shell can be slid away, and the harmonic elimination assembly can be maintained conveniently;
2. through the mutual matching of the buffer plate, the first springs, the second springs, the threaded rods and the nuts, the buffer plate is in sliding connection with the threaded rods, and the first springs and the second springs can respectively buffer the front side and the rear side of the buffer plate, so that the harmonic elimination assembly can be buffered, and the harmonic elimination assembly is prevented from being damaged;
3. through mutually supporting of the radiator fan that is equipped with, circular casing and a plurality of heating panel, be convenient for dispel the heat to the inside of rectangle shell to be convenient for dispel the heat to harmonic elimination subassembly, avoid influencing harmonic elimination subassembly and receive the influence.
Drawings
Fig. 1 is a schematic front structural view of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic top view of the cross-sectional structure of the present invention;
fig. 4 is a schematic rear view of the plurality of heat dissipating plates according to the present invention.
In the figure: 1. a front plate; 2. a rectangular shell; 3. a U-shaped rear cover; 4. a harmonic elimination component; 5. a first fixing plate; 6. a second fixing plate; 7. fixing the bolt; 8. a strip-shaped limiting block; 9. an annular rubber pad; 10. a buffer plate; 11. a threaded rod; 12. a first spring; 13. a nut; 14. a second spring; 15. a heat radiation fan; 16. a circular housing; 17. a first dust screen; 18. a second dust screen; 19. a heat dissipation plate; 20. a display panel; 21. a display lamp; 22. and controlling the keys.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a flow-sensitive harmonic elimination device as shown in figures 1-4, which comprises a front plate 1, a rectangular shell 2 and a U-shaped rear cover 3, wherein the front surface of the front plate 1 is provided with a control mechanism, the periphery of the rear side of the front plate 1 is fixedly connected with the rectangular shell 2, the inside of the rectangular shell 2 is provided with a harmonic elimination assembly 4, the harmonic elimination assembly 4 is connected with the front plate 1 through a buffer mechanism, the U-shaped rear cover 3 is movably sleeved outside the rectangular shell 2, the rear side of the U-shaped rear cover 3 is provided with a heat dissipation mechanism, and the front plate 1 is fixedly connected with the U-shaped rear cover 3 through a fixing mechanism;
simultaneously, fixed establishment includes two first fixed plates 5 and two second fixed plates 6, two first fixed plates 5 respectively with the left and right sides fixed connection of front bezel 1, two second fixed plates 6 respectively with the left and right sides front end fixed connection of lid 3 behind the U-shaped, two second fixed plates 6 all have fixing bolt 7 through fixed orifices swing joint, two first fixed plates 5's rear side all seted up with fixing bolt 7 assorted thread groove.
As shown in fig. 2 and 3, the bar-shaped limiting blocks 8 of the left and right symmetrical distribution of the two back side walls of the U-shaped back cover 3 are respectively and fixedly connected with the bar-shaped limiting blocks 8, the left and right outer side walls of the rectangular shell 2 are respectively provided with two bar-shaped limiting through grooves matched with the bar-shaped limiting blocks 8, and the U-shaped back cover 3 and the rectangular shell 2 can be conveniently installed in a sliding manner when being mutually installed.
As shown in fig. 2 and 3, an annular rubber pad 9 is fixedly connected to the rear end of the rectangular shell 2, and the rear side of the annular rubber pad 9 abuts against the U-shaped rear cover 3, so that the sealing property between the U-shaped rear cover 3 and the rectangular shell 2 is improved.
As shown in fig. 3, buffer gear includes buffer board 10, buffer board 10 and harmonic elimination subassembly 4's front end fixed connection, buffer board 10's surperficial four corners department all has threaded rod 11 through round hole swing joint, the front end of a plurality of threaded rods 11 all with front bezel 1 fixed connection, be equipped with a plurality of first springs 12 between buffer board 10 and the front bezel 1, a plurality of first springs 12 cup joint with a plurality of threaded rods 11 activity respectively, the equal screw thread in pole wall rear side of a plurality of threaded rods 11 has cup jointed nut 13, be equipped with a plurality of second springs 14 between a plurality of nuts 13 and a plurality of buffer board 10, a plurality of second springs 14 cup joint with a plurality of threaded rods 11 activity respectively, buffer board 10 and a plurality of threaded rods 11 sliding connection, a plurality of first springs 14 and a plurality of second springs 12 can cushion both sides around buffer board 10 respectively, thereby can cushion harmonic elimination subassembly 4, avoid harmonic elimination subassembly 4 to receive the damage.
As shown in fig. 2 and 3, the heat dissipation mechanism includes a heat dissipation fan 15 and a circular housing 16, the heat dissipation fan 15 is fixedly disposed inside the circular housing 16, the circular housing 16 is fixedly connected to the rear side of the U-shaped rear cover 3, the rear side wall of the U-shaped rear cover 3 is provided with a circular opening matched with the circular housing 16, the rear side inside the circular housing 16 is fixedly connected to a first dust screen 17, the upper and lower sides of the rectangular housing 2 are respectively provided with a plurality of uniformly distributed air inlets, the interiors of the plurality of air inlets are respectively and fixedly connected to a second dust screen 18, the rear side of the resonance elimination assembly 4 is fixedly connected to a plurality of uniformly distributed heat dissipation plates 19, so as to facilitate heat dissipation inside the rectangular housing 2, thereby facilitating the heat dissipation of the harmonic elimination component 4, avoiding the influence on the work of the harmonic elimination component 4, the first dust-proof net 17 and the second dust-proof net 18 are provided to prevent dust from entering the inside of the apparatus.
As shown in fig. 1, the control mechanism includes a display panel 20, a plurality of display lamps 21 and a plurality of control keys 22, and the display panel 20, the plurality of display lamps 21 and the plurality of control keys 22 are all fixedly connected to the front plate 1.
The utility model discloses the theory of operation:
when the U-shaped rear cover 3 is used, the U-shaped rear cover 3 is sleeved outside the rectangular shell 2, the two first fixing plates 5 correspond to the two second fixing plates 6 respectively, the two first fixing plates 5 can be fixed with the two second fixing plates 6 respectively by using the fixing bolts 7, so that the U-shaped rear cover 3 and the rectangular shell 2 can be fixed conveniently, and when the U-shaped rear cover 3 and the rectangular shell 2 can be slid away by dismounting the fixing bolts 7, so that the harmonic elimination assembly 4 can be maintained conveniently;
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. A flow-sensitive resonance elimination device is characterized in that: the front panel structure comprises a front panel (1), a rectangular shell (2) and a U-shaped rear cover (3), wherein a control mechanism is arranged on the front surface of the front panel (1), the periphery of the rear side of the front panel (1) is fixedly connected with the rectangular shell (2), a harmonic elimination assembly (4) is arranged inside the rectangular shell (2), the harmonic elimination assembly (4) is connected with the front panel (1) through a buffer mechanism, the U-shaped rear cover (3) is movably sleeved outside the rectangular shell (2), a heat dissipation mechanism is arranged on the rear side of the U-shaped rear cover (3), and the front panel (1) is fixedly connected with the U-shaped rear cover (3) through a fixing mechanism;
fixed establishment includes two first fixed plates (5) and two second fixed plates (6), two first fixed plate (5) respectively with the left and right sides fixed connection of front bezel (1), two second fixed plate (6) respectively with the left and right sides front end fixed connection of U-shaped back cover (3), two second fixed plate (6) all have fixing bolt (7), two through fixed orifices swing joint the rear side of first fixed plate (5) all seted up with fixing bolt (7) assorted thread groove.
2. A flow-sensitive resonance damping device as claimed in claim 1, wherein: the utility model discloses a rectangular shell, including U-shaped back lid (3), the bar stopper (8) of two equal symmetric distributions of two back lateral walls of left and right sides of U-shaped back lid (3), two and bar stopper (8) assorted bar spacing logical grooves have all been seted up to two lateral walls about rectangular shell (2).
3. A flow-sensitive resonance damping device as claimed in claim 1, wherein: the rear end of the rectangular shell (2) is fixedly connected with an annular rubber pad (9), and the rear side of the annular rubber pad (9) is abutted to the U-shaped rear cover (3).
4. A flow-sensitive resonance damping device as claimed in claim 1, wherein: buffer gear includes buffer board (10), buffer board (10) and the front end fixed connection of harmonic elimination subassembly (4), the surperficial four corners department of buffer board (10) all has threaded rod (11), a plurality of through round hole swing joint the front end of threaded rod (11) all with front bezel (1) fixed connection, be equipped with a plurality of first springs (12) between buffer board (10) and front bezel (1), it is a plurality of first spring (12) cup joint with a plurality of threaded rod (11) activity respectively, it is a plurality of nut (13) have been cup jointed to the equal screw thread in pole wall rear side of threaded rod (11), and are a plurality of be equipped with a plurality of second spring (14) between nut (13) and a plurality of buffer board (10), it is a plurality of second spring (14) cup joint with a plurality of threaded rod (11) activity respectively.
5. A flow-sensitive resonance damping device as claimed in claim 1, wherein: the heat dissipation mechanism comprises a heat dissipation fan (15) and a circular shell (16), wherein the heat dissipation fan (15) is located in the fixed inner portion of the circular shell (16), the circular shell (16) is fixedly connected with the rear side of the U-shaped rear cover (3), the rear side wall of the U-shaped rear cover (3) is provided with a round opening matched with the circular shell (16), the inner rear side of the circular shell (16) is fixedly connected with a first dust screen (17), the upper side and the lower side of the rectangular shell (2) are provided with a plurality of uniformly distributed air inlet holes, the air inlet holes are formed in the upper side and the lower side of the rectangular shell (2) and are multiple, the inner portion of each air inlet hole is fixedly connected with a second dust screen (18), and the rear side of the harmonic elimination assembly (4) is fixedly connected with a plurality of uniformly distributed heat dissipation plates (19).
6. A flow-sensitive resonance damping device as claimed in claim 1, wherein: the control mechanism comprises a display panel (20), a plurality of display lamps (21) and a plurality of control keys (22), and the display panel (20), the display lamps (21) and the control keys (22) are fixedly connected with the front plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022631584.6U CN213938472U (en) | 2020-11-15 | 2020-11-15 | Flow-sensitive resonance elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022631584.6U CN213938472U (en) | 2020-11-15 | 2020-11-15 | Flow-sensitive resonance elimination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213938472U true CN213938472U (en) | 2021-08-10 |
Family
ID=77169885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022631584.6U Expired - Fee Related CN213938472U (en) | 2020-11-15 | 2020-11-15 | Flow-sensitive resonance elimination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213938472U (en) |
-
2020
- 2020-11-15 CN CN202022631584.6U patent/CN213938472U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 Termination date: 20211115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |