CN209925267U

CN209925267U - Single machine state recognition system for cross-flow cooling fan unit of dry-type transformer

Info

Publication number: CN209925267U
Application number: CN201920379958.4U
Authority: CN
Inventors: 梁睿
Original assignee: Beijing Capital Airport Power And Energy Co Ltd
Current assignee: Beijing Capital Airport Power And Energy Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-01-10
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a dry-type transformer crossing current cooling fan unit state identification system, it is including display device and a plurality of detecting device, a plurality of detecting device all sets up in dry-type transformer, and with a plurality of transformer winding one-to-ones of dry-type transformer, every transformer winding has a crossing current fan that blows cooling air to it, and is a plurality of detecting device is used for surveying respectively and corresponds crossing current fan's running state, it is a plurality of detecting device all is in with the setting dry-type transformer is outside the display device electricity is connected. The utility model discloses well staff can implement through display device and observe every crossflow blower's concrete running state and running condition, has improved this dry-type transformer's safe in utilization, and this identification system simple structure maintains the convenience, very big saving dry-type transformer crossflow cooling fan group's the cost of upgrading.

Description

Single machine state recognition system for cross-flow cooling fan unit of dry-type transformer

Technical Field

The utility model relates to a transformer cooling arrangement field. More specifically, the utility model relates to a dry-type transformer crossing current cooling fan unit state identification system.

Background

The daily used medium-voltage dry-type transformer heat dissipation system is a fan unit formed by 6 cross-flow cooling fans which are connected in parallel, and when the operation temperature reaches a preset value, the fan unit is started and closed at the same time to dissipate heat of a transformer main body. Because of 6 crossing current cooling blower moves in parallel, install in the bottom position in the transformer shell cover that is hidden, darker, difficult to observe again, when taking place the unit trouble and shutting down the operation personnel can't in time discover, especially when the transformer overtemperature, 6 cooling blower start simultaneously, can't judge single cooling blower running state, if there is single fan to break down, can't in time be observed, the fan that breaks down can't in time withdraw from operation and timely maintenance change, cause cooling system efficiency to reduce easily. When the fault fan is electrified for a long time, the heat is generated to generate loss, and a fire disaster is caused when the fault fan is serious, so that potential safety hazards are brought to the continuous power supply operation of the transformer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dry-type transformer crossing current cooling fan unit state identification system for in time detect every crossing current cooling fan's unit running state.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the single machine state recognition system for the cross-flow cooling fan set of the dry type transformer comprises a display device and a plurality of detection devices, wherein the detection devices are all arranged in the dry type transformer and are in one-to-one correspondence with a plurality of transformer windings of the dry type transformer, each transformer winding is provided with a cross-flow fan blowing cooling air to the transformer winding, the detection devices are used for detecting the running state of the cross-flow fan, and the detection devices are all electrically connected with the display device arranged outside the dry type transformer.

The detection device is used for detecting the running state of the cross flow fan and transmitting the detection result to an external display device for displaying, so that a worker can know the running state of each cross flow fan in time.

Furthermore, the detection device comprises a detector, a fixing mechanism and two magnetic blocks, the crossflow fan comprises a shell, a motor and a cylindrical impeller, the shell is provided with an air outlet right facing one end of the transformer winding, the air outlet is provided with a grid, the impeller is in transmission connection with the motor, the impeller comprises two symmetrical circular supporting plates and a plurality of blades which are uniformly arranged between the two circular supporting plates at intervals in the circumferential direction, two ends of each blade extend to be fixedly connected with the two circular supporting plates, one side, close to each other, of the two circular supporting plates is the inner side, one of the magnetic blocks is attracted to the inner side of one circular supporting plate and is positioned between the two adjacent blades, the other magnetic block is symmetrically attracted to the outer side of the circular supporting plate, the detector is fixed on the corresponding grid of the crossflow fan through the fixing mechanism, and the detection end of the detector is aligned to any point of the rotating tracks of the two magnetic blocks.

Furthermore, a Hall sensor is arranged at the detection end of the detector and is aligned with the two magnetic blocks.

The detector is fixed on the cross flow fan by using the fixing mechanism, so that the detector is not influenced by vibration generated by the work of the cross flow fan and wind power generated when the detector works, the motor drives the impeller to rotate, the circular supporting piece and the blades on the impeller rotate under the drive of the motor, the magnetic block fixed on the supporting piece is periodically close to or far away from the detection end of the detector, and the detection end of the detector periodically generates a sensing signal.

The detector is electrically connected with the display, the detector periodically senses the magnetic blocks on the supporting piece to obtain that the cross flow fan normally works, and when the detector does not sense the magnetic blocks or senses the magnetic blocks all the time, the cross flow fan stops rotating.

Further, fixed establishment includes box body, lower box body and a plurality of first checkpost, go up the box body and down box body detachable amalgamation one inside box body that has the cavity, the detector sets up in the cavity, down the lower extreme of box body with the grid contact is a plurality of first checkpost is M shape checkpost, and with the grid strip one-to-one of box body lower extreme contact down, it is a plurality of the equal decurrent cover of opening of first checkpost is established on the box body that goes up box body and lower box body amalgamation, its both sides lower extreme with correspond the grid strip is connected, and its middle part withstands downwards go up the upper end of box body.

Furthermore, a protruding part is arranged at the position, right opposite to the magnetic block, of the lower box body, the protruding part penetrates through the grating and extends to a position close to the magnetic block, and an opening is formed in one side, close to the magnetic block, of the protruding part. The inside cavity of box body is used for the splendid attire detector for detector work does not receive external environment influence, and the detection end of detector stretches out along this opening simultaneously, so that the detection end not receive the influence of box body parcel.

Go up the box body and can dismantle the connection with lower box body, conveniently put into detection device and take out, simultaneously, be equipped with the arch down on the box body, make things convenient for the detection end of detector to stretch out to being close to the impeller from the arch, make the testing result more accurate.

First checkpost sets to M shape, and the both ends of its lower extreme all are equipped with hook portion, and the cover that first checkpost opening is decurrent is established in the box body upper end during the installation, and same grid strip is caught on to both ends hook portion of its below to fix the box body on the grid, a plurality of first checkposts are fixed the box body on the grid, and wherein the bulge at first checkpost middle part withstands box body downwards, makes the combination of box body and grid more firm.

Further, display device includes PCB board, a plurality of fast connection seat, connecting seat, connection panel and a plurality of display lamp, the input of connecting seat with the PCB board electricity is connected, and is a plurality of the detector all with the input electricity of connecting seat is connected, and is a plurality of fast connection seat all welds on the PCB board, and all with the output electricity of connecting seat is connected, and is a plurality of the detector is with a plurality of fast connection seat one-to-one, the connection panel level sets up the top of PCB board is equipped with a plurality of mounting holes on it, and is a plurality of the mounting hole is with a plurality of fast connection seat one-to-one, and is a plurality of install of display lamp one-to-one in the mounting hole, and a plurality of the display lamp all with the correspondence fast connection seat electricity is connected.

The plurality of display lamps display the detection result of the corresponding detector in real time, so that the working personnel can know the specific running state of each cross flow fan in time conveniently.

Furthermore, the display lamp comprises a lamp holder and a light-emitting diode, the lamp holder is arranged in the corresponding mounting hole, the light-emitting diode is detachably arranged in the lamp holder, and the lower end of the light-emitting diode is inserted into the corresponding quick-connection seat.

The light-emitting diode is convenient to disassemble and replace, and the maintenance cost is greatly saved.

Further, display device opens including the cover shell, the cover shell sets up connection panel with between the PCB board, the cover shell upper end is equipped with a plurality of first trepanning, and is a plurality of first trepanning is with a plurality of the lower extreme one-to-one of lamp stand, the lower extreme of lamp stand stretches into downwards in the first trepanning that corresponds, the lower extreme of cover shell is equipped with a plurality of second trepanning, and is a plurality of the second trepanning is with a plurality of fast joint seat one-to-one, the upper end of fast joint seat upwards stretches into and corresponds in the second trepanning, every the second trepanning of first trepanning rather than the below link up each other.

The casing has effectively protected PCB board, lamp stand, quick-connect seat and emitting diode during operation not influenced by external environment, has played fine dustproof effect, has prolonged the life of equipment.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the identification system of the present invention;

FIG. 2 is a schematic view of the internal structure of a cross flow fan according to the present invention;

FIG. 3 is a schematic side view of the impeller of the present invention;

fig. 4 is a schematic structural view of the fixing device of the present invention;

fig. 5 is a schematic structural diagram of the detector of the present invention;

fig. 6 is a schematic structural diagram of the display device of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1 is the embodiment of the utility model provides a pair of dry-type transformer crossing current cooling fan unit state identification system, this dry-type transformer has a plurality of transformer winding 1, every transformer winding 1 corresponds and has a crossing current fan 2 of blowing cooling air to it, all be equipped with the detection device 3 of surveying this crossing current fan 2 running state on every crossing current fan 2, a plurality of detection device 3 all set up in dry-type transformer, and a plurality of detection device 3 and a plurality of dry-type transformer winding 1 one-to-one, a plurality of detection device 3 all are connected at the outside display device 4 electricity of dry-type transformer with setting up, display device 4 is used for the detection result of a plurality of detection device 3 of real-time display. Preferably, the display device 4 is fixed at the console of the transformer winding 1 and the crossflow blower 2.

Further, as shown in fig. 2 and 3, the crossflow blower 2 is a cross-flow cooling blower commonly found in the market, and comprises a casing, a motor 21 and a cylindrical impeller, wherein an air outlet is arranged at one end of the casing of the crossflow blower 2 facing the transformer winding 1, a grille is arranged at the air outlet, the impeller is in transmission connection with an output shaft of the motor 21, the output shaft of the motor 21 rotates to drive the impeller to rotate, crossflow wind is generated in the rotation process of the impeller, the crossflow wind is blown out along the air outlet, the impeller comprises two symmetrically arranged circular support plates 23 and a plurality of blades 22 connected between the two circular support plates 23, the detection device 3 comprises a detector 32, a fixing mechanism 33 and two antipodal magnetic blocks 31, as shown in fig. 2 and 3, one side of the two magnetic blocks 31 attracted to each other is symmetrically attracted to two sides of one circular support plate 23, the two magnetic blocks 31 are both located between two adjacent blades 22, because the, and the magnetic blocks 31 are both N35 nd fe-b antipodal magnets (strong magnetic force), so that when the two magnetic blocks 31 are fixed on both sides of the circular support plate 23, the situation of flying out along with the rotation of the impeller is avoided, the detector 32 is fixed on the corresponding grid of the crossflow fan 2 through the corresponding fixing mechanism 33, and the detection end of the detector 32 is aligned to the two magnetic blocks 31; the motor 21 rotates to drive the impeller to rotate, the circular support plate 23 on the impeller rotates synchronously along with the rotation shaft of the motor 21, and then the two magnetic blocks 31 on the circular support plate 23 are driven to be close to or far away from the detector 32 at intervals, the magnetic blocks 31 are detected by the detector 32 at intervals, and the detection result is transmitted to the display device 4 to be displayed on the display device 4.

Further, the fixing mechanism 33 includes an upper box 331, a lower box 332 and a plurality of first clips 334, the upper box 331 and the lower box 332 are spliced to form a box with a cavity inside, the detector 32 is disposed in the cavity inside the box, a protrusion 333 facing the impeller is disposed on one side of the lower box 332 facing the impeller, the protrusion 333 extends to a magnetic block 31 close to the impeller, the plurality of first clips 334 are M-shaped clips or clips with similar structures, the M-shaped clips are covered on the box spliced by the upper box 331 and the lower box 332, hook portions are disposed at two ends of the lower side of the M-shaped clips, one end of the lower box 332 provided with the protrusion abuts against the grid, the plurality of grid bars contact with the lower box 332, the plurality of first clips 334 are in one-to-one correspondence with the grid bars contacting with the lower box 332, and the lower ends of the first clips 332 are respectively connected with the corresponding grid bars, so as to fix the box spliced by the upper box 331 and the lower box 332 on the grid, the middle projection of the M-clip bears down against the top of the upper case 331 to secure the case to the grill.

Further, the protrusion 333 at the lower end of the lower box 332 passes through the grating and extends to be close to the impeller, an opening is formed in the far end of the protrusion 333, the detection end of the detector 32 penetrates into the protrusion 333, the detection end of the detector detects the two magnetic blocks 31 through the opening, the shortest distance between the detection end of the detector 32 and the two magnetic blocks 31 is 5mm, and when the distance between the detection end of the detector 32 and the magnetic blocks 31 is smaller than or equal to 7mm, the detector 32 sends out a detection signal.

Further, as shown in fig. 6, the display device 4 includes a PCB 41, a plurality of quick connectors 42, a wire holder 43, a housing 44, a connection panel 45, a plurality of lamp holders 46 and a plurality of light emitting diodes 47, an input end of the wire holder 43 is electrically connected to the PCB 41, the PCB 41 is welded with the plurality of quick connectors 42, the plurality of quick connectors 42 are electrically connected to an output end of the wire holder 43, the connection panel 45 is horizontally disposed above the PCB 41, a plurality of mounting holes are formed at intervals thereon, each mounting hole is correspondingly provided with a lamp holder 46, an upper end of a side surface of each lamp holder 46 is provided with a transverse protruding edge, a lower end of each lamp holder is downwardly inserted into the corresponding mounting hole, the housing 44 is disposed between the connection panel 45 and the PCB 41, an upper end of the housing 44 is provided with a plurality of first holes, the plurality of first holes are correspondingly matched with lower ends of the plurality of lamp holders one to one, lower ends of the plurality of the lamp holders 46 can be inserted into the first holes one to one, the lower extreme of cover 44 is equipped with a plurality of second trepanning, a plurality of second trepanning and a plurality of quick-connect seat 42 one-to-one, and a plurality of quick-connect seat 42 can upwards embolia the second trepanning that corresponds in, and PCB board, cover 44 and connection panel are connected fixedly through running through three's connecting bolt 48 and with bolt 48 assorted nut.

The light emitting diode 47 can be inserted downwards from the upper part of the lamp holder 46, the lower end of the light emitting diode 47 is electrically connected with the quick connection seat 42 corresponding to the lamp holder 46, the light emitting diode 47 can be directly inserted into the lamp holder 46, and can also be directly pulled out from the lamp holder 46, so that the light emitting diode 47 is very convenient to replace and maintain. The whole display device adopts the modularized design of quick disassembly, so that the maintenance time is greatly shortened, and the later-stage replacement is very convenient.

The working principle of the device is as follows:

fixing two magnetic blocks 31 on two sides of the same circular support plate 23 on the impeller, installing the detectors 32 in a box body formed by enclosing the upper box body 331 and the lower box body 332, fixing the box body formed by splicing the upper box body 331 and the lower box body 332 on a grid through a plurality of first clips 334, extending the detection ends of the detectors 32 to be close to the impeller along the convex part of the lower box body 332, enabling the distance between the magnetic blocks 31 and the detection ends of the detectors 32 to be 5mm at minimum, electrically connecting a plurality of detectors 32 on a plurality of crossflow fans 2 with a wiring base 43 in the display device 4 respectively, detecting whether a display lamp corresponding to each detector 32 works normally, starting a motor 21 in the crossflow fan 2, driving the impeller to rotate by the motor 21, further driving the detectors 31 to be close to or far away from the detection ends of the corresponding detectors 32 at intervals, detecting the magnetic blocks 31 by the detectors 32 at intervals, and transmitting the detected results to the display device 4 at intervals in the form of electric signals, the operating state of the corresponding motor 21 is known by the blinking state of the corresponding light emitting diode in the display device 4, and the operating state of the corresponding crossflow blower 2 can be grasped in real time.

The invention has simple structure and convenient disassembly and maintenance, realizes the monitoring of the cross flow fan without greatly improving the dry type transformer and the cross flow cooling fan unit, and saves the upgrading cost of the whole dry type transformer cross flow cooling fan unit.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The utility model provides a dry-type transformer crossing current cooling fan unit state identification system which characterized in that: the detection device comprises a display device (4) and a plurality of detection devices (3), wherein the detection devices are all arranged in a dry type transformer and are in one-to-one correspondence with a plurality of transformer windings (1) of the dry type transformer, each transformer winding (1) is provided with a cross flow fan (2) blowing cooling air to the transformer winding, the detection devices (3) are respectively used for detecting the running state corresponding to the cross flow fan (2), and the detection devices (3) are all electrically connected with the display device (4) arranged outside the dry type transformer.

2. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 1, characterized in that: the detection device (3) comprises a detector (32), a fixing mechanism (33) and two magnetic blocks (31), the crossflow fan (2) comprises a shell, a motor (21) and a cylindrical impeller, the shell is just opposite to one end of the transformer winding (1), the air outlet is provided with a grid, the impeller is in transmission connection with the motor (21), the impeller comprises two circular support plates (23) which are symmetrically arranged and a plurality of blades (22) which are circumferentially uniformly spaced and are arranged between the two circular support plates (23), the two ends of each blade extend to be fixedly connected with the two circular support plates, the two magnetic blocks are symmetrically attracted to any one of the two sides of the circular support plates, and the attraction is that the circular support plate (23) is close to the other magnetic block on one side of the circular support plate is positioned between any two adjacent blades (22), the detector (32) is fixed on the corresponding grid of the crossflow fan (2) through the fixing mechanism (33), and the detection end of the detector (32) is aligned to any point of the rotating tracks of the two magnetic blocks (31).

3. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 2, characterized in that: the fixing mechanism (33) comprises an upper box body (331), a lower box body (332) and a plurality of first clips (334), the upper box body (331) and the lower box body (332) are detachably spliced into a box body with a cavity inside, the detector (32) is arranged in the cavity, and the lower box body (332) is installed on the grating through the plurality of first clips (334).

4. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 3, characterized in that: a protruding part (333) is arranged at the position, opposite to the magnetic block (31), of the lower box body (332), the protruding part (333) penetrates through the grating and extends to be close to the magnetic block (31), and an opening is formed in one side, close to the magnetic block (31), of the protruding part (333).

5. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 2, characterized in that: the display device (4) comprises a PCB (41), a plurality of quick connection seats (42), a wire holder (43), a connecting panel (45) and a plurality of display lamps, the input end of the wire holder (43) is electrically connected with the PCB (41), the plurality of detectors (32) are electrically connected with the input end of the wire holder (43), the plurality of quick connection seats (42) are welded on the PCB (41), and are all electrically connected with the output end of the wire holder (43), a plurality of detectors (32) are in one-to-one correspondence with a plurality of quick connection holders (42), the connection panel (45) is horizontally disposed above the PCB board (41), be equipped with a plurality of mounting holes on it, it is a plurality of the mounting hole is with a plurality of the fast joint seat (42) one-to-one, it is a plurality of the display lamp one-to-one install in the mounting hole, and it is a plurality of the display lamp all with correspond fast joint seat (42) electricity is connected.

6. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 5, characterized in that: the display lamp comprises a lamp holder (46) and a light-emitting diode (47), wherein the lamp holder (46) is arranged in a corresponding mounting hole, the light-emitting diode (47) is detachably arranged in the lamp holder (46), and the lower end of the light-emitting diode (47) is inserted into the corresponding quick-connection seat (42).

7. The system for identifying the single machine state of the dry type transformer cross flow cooling fan unit according to claim 6, characterized in that: the display device comprises a sleeve (44), the sleeve (44) is arranged between a connecting panel (45) and a PCB (41), a plurality of first sleeve holes are formed in the upper end of the sleeve (44) and correspond to the lower ends of lamp holders (46) one by one, the lower ends of the lamp holders (46) downwards extend into the corresponding first sleeve holes, a plurality of second sleeve holes are formed in the lower end of the sleeve (44) and correspond to the second sleeve holes in a one-to-one mode, and the second sleeve holes are corresponding to the quick connecting seats (42) one by one, and the upper ends of the quick connecting seats (42) upwards extend into the corresponding second sleeve holes and are communicated with the second sleeve holes below the first sleeve holes.