CN215733835U - Low-power motor capacity-increasing high-power motor magnetic balance differential protection device - Google Patents
Low-power motor capacity-increasing high-power motor magnetic balance differential protection device Download PDFInfo
- Publication number
- CN215733835U CN215733835U CN202122358628.7U CN202122358628U CN215733835U CN 215733835 U CN215733835 U CN 215733835U CN 202122358628 U CN202122358628 U CN 202122358628U CN 215733835 U CN215733835 U CN 215733835U
- Authority
- CN
- China
- Prior art keywords
- power motor
- motor
- shell
- fixedly connected
- magnetic balance
- 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
Images
Abstract
The utility model provides a device for increasing magnetic balance differential protection of a low-power motor and a high-power motor, which relates to the technical field of motors and comprises a motor body structure, wherein the motor body structure internally comprises a motor shell, one side of the motor shell is fixedly connected with an electric connection box, the lower end of the motor shell is fixedly connected with an outer installation shell, one side of the outer installation shell is provided with a side communication groove, the inside of one side of the electric connection box is provided with an inner connection joint, and the side communication groove is communicated with the inner connection joint. The utility model realizes the magnetic balance differential protection function by using the current relay and matching the original protection device, replaces a special magnetic balance differential protection device, thereby eliminating the high risk of transformation, saving the complex debugging step, greatly saving the cost for purchasing new equipment, and being applicable to capacity increase of all low-power motors to high-power motors and increasing the magnetic balance differential protection.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a protection device for increasing magnetic balance differential motion of a low-power motor to a high-power motor through capacity increase.
Background
Due to production requirements, most enterprises such as national internal factories and power plants need to increase the capacity of a low-power high-voltage motor to more than 2000kW due to production working conditions, so that the working condition requirements are met. The relay protection and automatic device design specifications of GB _ T _50062-2008 power device require that a high-voltage motor larger than 2000kW has to have a magnetic balance differential protection function. The common modification method is to update the existing protection device into a protection device with a magnetic balance differential function.
The transformation process needs to completely remove the original high-voltage cabinet protection device wires and rewire wiring, so that higher safety risk exists, the new device is also debugged by remote signaling, remote measurement and the like, the process is complex, and the cost of the device with the magnetic balance differential protection function is higher than that of the common protection device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the existing high-voltage cabinet protection device line needs to be completely removed and rewired and connected in the motor transformation process in the prior art, so that the safety risk is higher, the new device is debugged again by remote signaling, remote measurement and the like, the process is complex, the cost of the device with the magnetic balance differential protection function is higher than that of the common protection device, and the added magnetic balance differential protection device for the low-power motor capacity-increased high-power motor is provided.
In order to achieve the purpose, the utility model adopts the following technical scheme: a low-power motor capacity-increasing high-power motor magnetic balance differential protection device comprises a motor body structure, wherein the motor body structure comprises a motor shell, one side of the motor shell is fixedly connected with an electric connection box, the lower end of the motor shell is fixedly connected with an outer installation shell, one side of the outer installation shell is provided with a side communication groove, the inside of one side of the electric connection box is provided with an inner connection joint, the side communication groove is communicated with the inner connection joint, one side of the outer installation shell is fixedly connected with a protective installation shell, the protective installation shell is arranged on one side of the side communication groove, one side of the outer installation shell is fixedly connected with a side installation plate, one side of the side installation plate is fixedly connected with current relays, the number of the current relays is three, and motor current loops in the inner connection joint are connected with CT loops of the three current relays, and the three current relays are connected with a direct current power supply loop in the original high-voltage cabinet.
Preferably, the other side of the side mounting plate is fixedly connected with a fixed heat dissipation plate, and the fixed heat dissipation plate is fixedly connected with the outer mounting shell.
Preferably, one end of the motor shell is fixedly connected with a front end cover, two sides of the lower end of the motor shell are fixedly connected with fixed supporting legs, and one side of each fixed supporting leg is provided with a side notch.
Preferably, fixing holes are formed in the bottoms of side notches on the front side and the rear side of each fixing supporting leg, and the fixing supporting legs are fixed with the outer mounting shell through the fixing holes in a bolt mode.
Preferably, the inside of protection installation shell one side is provided with protective structure, protective structure includes the side sliding tray, the side sliding tray is seted up inside one side of protection installation shell, the inside slip joint of side sliding tray is provided with the rubber extrusion board.
Preferably, a rubber protection pad is arranged below the rubber extrusion plate, the rubber protection pad is fixedly connected with one side of the outer installation shell, and an inner extrusion elastic ring is fixedly connected between one end of the rubber extrusion plate and the side face sliding groove.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. in the utility model, the magnetic balance differential protection function is realized by using the current relay and matching the original protection device, and the special magnetic balance differential protection device is replaced, so that the high risk of transformation is eliminated, the complicated debugging step is saved, the cost for purchasing new equipment is greatly saved, and the magnetic balance differential protection circuit can be applied to capacity increase of all low-power motors to high-power motors and increase of magnetic balance differential protection.
2. According to the utility model, through the arrangement of the side notches, the weight between the fixed supporting legs and the motor shell can be reduced, and meanwhile, the fixed supporting legs between the side notches can form reinforcing ribs, so that the strength of the fixed supporting legs can be increased, through the arrangement of the fixed heat dissipation plate and the side mounting plate, the fixed supporting legs are used for dissipating heat on the current relay, through the arrangement of the protection structure, when the internal connection connector and the current relay are connected, the connecting wire used in connection pushes and clamps the rubber extrusion plate through the elastic force of the internal extrusion elastic ring, the connecting wire can be limited, so that the maintenance is convenient, and meanwhile, through the rubber extrusion plate and the rubber protection pad, the connecting wire can be protected, and the damage rate of the connecting wire is reduced.
Drawings
Fig. 1 is a schematic perspective view of a magnetic balance differential protection device for a low power motor to increase capacity to a high power motor according to the present invention;
FIG. 2 is an exploded schematic view of a differential protection device for increasing magnetic balance between a low power motor and a high power motor according to the present invention;
FIG. 3 is a schematic cross-sectional view of a protective mounting shell in a differential protection device for increasing magnetic balance between a low-power motor and a high-power motor according to the present invention;
FIG. 4 is a schematic diagram of a structure of a protection mounting housing of a high power motor increased magnetic balance differential protection device according to the present invention;
fig. 5 is a modified view of a protection mounting housing in a differential protection device for increasing magnetic balance between a low-power motor and a high-power motor according to the present invention.
Illustration of the drawings:
1. a motor body structure; 11. a motor housing; 12. a front end cover; 13. fixing the supporting legs; 14. an outer mounting shell; 15. a protective mounting shell; 16. a current relay; 17. a side mounting plate; 18. a fixed heat dissipation plate; 19. a side communicating groove; 110. a side slot; 111. a fixing hole; 112. an electrical connection box; 113. an inner connection joint;
2. a protective structure; 21. a side sliding groove; 22. a rubber extrusion plate; 23. a rubber protective pad; 24. and internally extruding the elastic ring.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Embodiment 1, as shown in fig. 1-2, the present invention provides a magnetic balance differential protection device for a low-power motor to a high-power motor, which includes a motor body structure 1, the motor body structure 1 includes a motor housing 11 therein, one side of the motor housing 11 is fixedly connected with an electrical connection box 112, the lower end of the motor housing 11 is fixedly connected with an external mounting shell 14, one side of the external mounting shell 14 is provided with a side communication slot 19, the electrical connection box 112 is provided with an internal connection joint 113 therein, the side communication slot 19 is communicated with the internal connection joint 113, one side of the external mounting shell 14 is fixedly connected with a protection mounting shell 15, the protection mounting shell 15 is arranged at one side of the side communication slot 19, one side of the external mounting shell 14 is fixedly connected with a side mounting plate 17, one side of the side mounting plate 17 is fixedly connected with a current relay 16, the number of the current relays 16 is three, a motor current loop in the internal connection joint 113 is connected with a CT loop of the three current relays 16, the three current relays 16 are connected with the original direct current supply loop in the high-voltage cabinet.
Specifically, the following specific setting and function of the motor body structure 1 are to connect in parallel 3 126 trigger contacts, and connect in series with the original protection device in the high-voltage board to the trip circuit, when the motor is in fault, the current relay 16 reaches the set trip current and then the trigger circuit sends out a signal to trip the high-voltage board, so as to realize the magnetic balance differential protection function.
As shown in fig. 1-3, the other side of the side mounting plate 17 is fixedly connected with a fixed heat sink 18, the fixed heat sink 18 is fixedly connected with the outer mounting shell 14, one end of the motor housing 11 is fixedly connected with a front end cover 12, both sides of the lower end of the motor housing 11 are fixedly connected with fixed supporting legs 13, one side of each fixed supporting leg 13 is provided with a side notch 110, the bottoms of the side notches 110 at the front and rear sides of each fixed supporting leg 13 are provided with fixing holes 111, the fixed supporting legs 13 are fixed with the outer mounting shell 14 by bolts through the fixing holes 111, the inside of one side of the protective mounting shell 15 is provided with a protective structure 2, the protective structure 2 comprises a side sliding groove 21, the side sliding groove 21 is arranged inside one side of the protective mounting shell 15, the inside of the side sliding groove 21 is slidably clamped with a rubber extrusion plate 22, a rubber protection pad 23 is arranged below the rubber extrusion plate 22, the rubber protection pad 23 is fixedly connected with one side of the outer mounting shell 14, an inner extrusion elastic ring 24 is fixedly connected between one end of the rubber extrusion plate 22 and the side sliding groove 21.
The effect that its whole motor body structure 1 and protective structure 2 reached does, seting up through side notch 110, can reduce the weight between fixed stay 13 and the motor housing 11, can make the fixed stay 13 between the side notch 110 form the strengthening rib simultaneously, the intensity of multiplicable fixed stay 13, through the setting of fixed heating panel 18 and side mounting panel 17, be used for dispelling the heat on the current relay 16, setting through protective structure 2, be used for when being connected between interconnection joint 113 and current relay 16, the connecting wire that will use when connecting promotes the centre gripping through the elasticity of interior extrusion elastic ring 24 with rubber stripper plate 22, can restrict the connecting wire, thereby be convenient for maintain, simultaneously through rubber stripper plate 22 and rubber protection pad 23, can protect the connecting wire, reduce the spoilage of connecting wire.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes by using the technical contents disclosed in the above description to other fields, but any simple modification, equivalent change and change made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a low power motor increases differential protection device of magnetic balance to high power motor increase volume, includes motor body structure (1), its characterized in that: the motor body structure (1) comprises a motor shell (11), one side of the motor shell (11) is fixedly connected with an electric connection box (112), the lower end of the motor shell (11) is fixedly connected with an outer installation shell (14), one side of the outer installation shell (14) is provided with a side communication groove (19), the inside of one side of the electric connection box (112) is provided with an inner connection joint (113), the side communication groove (19) is communicated with the inner connection joint (113), one side of the outer installation shell (14) is fixedly connected with a protection installation shell (15), the protection installation shell (15) is arranged on one side of the side communication groove (19), one side of the outer installation shell (14) is fixedly connected with a side installation plate (17), one side of the side installation plate (17) is fixedly connected with a current relay (16), and the number of the current relays (16) is three, and a motor current loop in the inner connecting joint (113) is connected with CT loops of three current relays (16), and the three current relays (16) are connected with a direct current supply loop in the original high-voltage cabinet.
2. The device for increasing the magnetic balance differential protection of the low-power motor to the high-power motor according to claim 1, wherein: the other side fixedly connected with fixed heating panel (18) of side-mounting board (17), fixed heating panel (18) and outer mounting shell (14) fixed connection.
3. The device for increasing the magnetic balance differential protection of the low-power motor to the high-power motor according to claim 1, wherein: one end of the motor shell (11) is fixedly connected with a front end cover (12), two sides of the lower end of the motor shell (11) are fixedly connected with fixed supporting legs (13), and one side of each fixed supporting leg (13) is provided with a side notch (110).
4. A low power motor capacity-increasing to high power motor magnetic balance differential protection device according to claim 3, characterized in that: fixing holes (111) are formed in the bottoms of side notches (110) on the front side and the rear side of each fixing supporting leg (13), and the fixing supporting legs (13) are fixed with the outer mounting shell (14) through the fixing holes (111) in a bolt mode.
5. The device for increasing the magnetic balance differential protection of the low-power motor to the high-power motor according to claim 1, wherein: the inside of protection installation shell (15) one side is provided with protective structure (2), protective structure (2) include side sliding tray (21), side sliding tray (21) are seted up inside one side of protection installation shell (15), the inside slip joint of side sliding tray (21) is provided with rubber stripper plate (22).
6. The device for increasing the magnetic balance differential protection of the low-power motor to the high-power motor according to claim 5, wherein: the rubber extrusion plate is characterized in that a rubber protection pad (23) is arranged below the rubber extrusion plate (22), the rubber protection pad (23) is fixedly connected with one side of the outer installation shell (14), and an inner extrusion elastic ring (24) is fixedly connected between one end of the rubber extrusion plate (22) and the side sliding groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122358628.7U CN215733835U (en) | 2021-09-28 | 2021-09-28 | Low-power motor capacity-increasing high-power motor magnetic balance differential protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122358628.7U CN215733835U (en) | 2021-09-28 | 2021-09-28 | Low-power motor capacity-increasing high-power motor magnetic balance differential protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215733835U true CN215733835U (en) | 2022-02-01 |
Family
ID=80025696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122358628.7U Active CN215733835U (en) | 2021-09-28 | 2021-09-28 | Low-power motor capacity-increasing high-power motor magnetic balance differential protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215733835U (en) |
-
2021
- 2021-09-28 CN CN202122358628.7U patent/CN215733835U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215733835U (en) | Low-power motor capacity-increasing high-power motor magnetic balance differential protection device | |
| CN213584624U (en) | Box type alternating current metal closed ring network switch power distribution cabinet | |
| CN212083516U (en) | Ammeter plug connector insulating boot | |
| CN213279159U (en) | Surge protection device capable of preventing spontaneous combustion | |
| CN211556434U (en) | Surge protector of low-voltage distribution system | |
| CN212277464U (en) | LD-CN-LS waterproof energy storage lithium ion battery connector | |
| CN103647242B (en) | A kind of Gong Xiang enclosed busbar UNICOM structure | |
| CN209104863U (en) | A kind of block terminal for high pressure lithium battery energy storage battery system | |
| CN219041335U (en) | Grounding device of bus duct | |
| CN214539692U (en) | Test rod for elbow type lightning arrester | |
| CN111082256A (en) | Locomotive heavy current motor connector | |
| CN214478875U (en) | Movable alternating current metal-enclosed switchgear | |
| CN206349563U (en) | A kind of dual fixed beam connector of safe dustproof formula | |
| CN218826224U (en) | Special copper bar of soft start | |
| CN218386298U (en) | Safe type electrical ring main unit | |
| CN217847822U (en) | Overload protection AC contactor | |
| CN217281414U (en) | Mobile energy storage emergency power supply quick access device | |
| CN204886071U (en) | Novel electric power intelligence grounding box | |
| CN216085243U (en) | High integrated hybrid battery distribution BDU | |
| CN214255071U (en) | Safe protection against electric shock's distribution control cabinet | |
| CN219937405U (en) | Overload-proof plug power line | |
| CN219419895U (en) | Electrical circuit connector, modularized extraction unit and low-voltage switch cabinet | |
| CN216818717U (en) | All-insulation plug-in type mounting joint for insulated tubular bus | |
| CN216290149U (en) | Multifunctional low-voltage cable branch box | |
| CN211062154U (en) | Cable anti-theft monitoring equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |