CN202474819U - Over-current protection device for transformer main body - Google Patents
Over-current protection device for transformer main body Download PDFInfo
- Publication number
- CN202474819U CN202474819U CN2012200664456U CN201220066445U CN202474819U CN 202474819 U CN202474819 U CN 202474819U CN 2012200664456 U CN2012200664456 U CN 2012200664456U CN 201220066445 U CN201220066445 U CN 201220066445U CN 202474819 U CN202474819 U CN 202474819U
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- current
- over
- protection device
- tube
- insulation
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Abstract
The utility model provides an over-current protection device for a transformer main body. The defects that the protection device in the conventional transformer protection technology only can protect an electric device but cannot effectively protect the transformer main body can be overcome. According to the technical scheme provided by the utility model, the over-current protection device comprises a fusing tube, and further comprises an insulating tube, a lower contact, a conductive ring, a sealing ring and a fixing nut; the fixing nut consists of an upper contact and an insulation head; the upper contact is fixedly arranged on the insulation head; the sealing ring is mounted on the fixing nut; the lower contact is mounted at the bottom of the insulation pipe; the conductive ring is mounted in a pipe at the upper part of the insulation pipe; the fusing tube is mounted in the insulation pipe; the lower end of the fusing tube is connected with the lower contact; the fixing nut is mounted at a port of the insulation pipe; and the upper contact at one end of the fixing nut is connected on the conductive ring, and is connected with the upper end of the fusing tube. The over-current protection device provided by the utility model has the beneficial effects as follows: the over-current protection device can be used for reliably switching off all fault current between a current that causes a melt to be molten and a rated breaking current, so that the good protection property of switching on and off in a full range can be obtained, and the damages to a transformer coil, caused by the over-current fault, can be safely and effectively prevented.
Description
Technical field
The utility model belongs to the transformer technology field, is specifically related to a kind of transformer body overcurrent protective device.
Background technology
Power transformer is in running, because most of necessary security safeguard measure that lacks, and often because of low-pressure side electrical appliance overload, short circuit, and the generation of situation such as thunderbolt and cause the coil overcurrent, cause transformer self to damage.Thereby, in this field, be badly in need of a kind of self-protecting device being provided for the power transformer body.And prior art mostly is to use automatic protector; Have DC circuit, carry out switch, door switch, delayer, trigger, current controller and current monitor; Automatically cut off the electricity supply turn-on power again after fault is got rid of when realizing overload, short circuit, thunderbolt through these devices.But this protective device complicated circuit, cost is high, and only can protect the device that links to each other with transformer, and can't effectively protect transformer itself.
Summary of the invention
The purpose of the utility model is that the protective device that overcomes in the existing tranformer protection technology only can be protected electrical appliance; And the deficiency that can't effectively protect transformer itself provides a kind of transformer body overcurrent protective device that can prevent the damage of coil overcurrent.
For achieving the above object, the technical scheme of the utility model comprises fuse tube; It is characterized in that: this device also comprises insulated tube, following contact, conducting ring, sealing ring and locking cap; Locking cap is made up of upper contact head and insulation head, and upper contact head is fixed on the insulation head, and sealing ring is installed on the locking cap; Following contact is installed in the insulated tube bottom; Conducting ring is installed in the pipe on insulated tube top, and fuse tube is installed in the insulated tube, and the lower end connects contact down; Locking cap is installed in the port of insulated tube, and the upper contact head of locking cap one end is connected on the conducting ring, and is connected with the upper end of fuse tube.
Following contact is bolt shape, and an end is provided with external screw thread; Conducting ring is provided with internal thread and brace; Upper contact head is provided with the external screw thread with the conducting ring screw-internal thread fit; The first end that insulate is screw shaped, and the other end is the nut shape.
The beneficial effect of the utility model is: can break off all fault currents between electric current to the specified drop-out current that causes the melt fusing reliably.It is to utilize current-limiting fuse to have than high breaking capacity; But not current limiting fuse but has preferably little overcurrent protection characteristics; Obtain the good protection characteristic that gamut is cut-off, prevent the transformer coil damage that transformer body overcurrent fault causes safely and effectively.
Description of drawings
Fig. 1 is the main pseudosection of the utility model;
Fig. 2 is that the application of the utility model connects sketch map;
Fig. 3 is the cutaway view of insulated tube;
Fig. 4 is the main cutaway view of conducting ring;
Fig. 5 is the left view of conducting ring;
Fig. 6 is the main cutaway view of following contact;
Fig. 7 is the left view of following contact;
Fig. 8 is the main cutaway view of locking cap;
Fig. 9 is the left view of locking cap.
In the accompanying drawing: 1. transformer body overcurrent protective device, 2. insulated tube, 3. conducting ring 4. descends contact, 5. fuse tube, 6. sealing ring, 7. locking cap, 8. upper contact head, 9. insulation head, 10, transformer-cabinet.
Embodiment
As shown in Figure 3, insulated tube 2 is a tubulose, and an end opening, the other end are provided with down the end of thread fairlead of contact 4, and insulated tube 2 is provided with the brace fairlead of conducting ring 3 near openend.
Like Fig. 4, shown in Figure 5, conducting ring 3 is a ring-type, is provided with internal thread in the ring, the outer brace that is provided with of ring.
Like Fig. 6, shown in Figure 7, following contact 4 is a bolt shape, and an end is provided with external screw thread.
Like Fig. 8, shown in Figure 9, locking cap 7 is made up of upper contact head 8 and insulation 9, and upper contact head 8 is provided with the external screw thread with the conducting ring screw-internal thread fit; Insulation 9 one end are screw shaped, and the other end is the nut shape; Upper contact head 8 is fixed on screw shaped one end of insulation 9.
As shown in Figure 1, the utility model is made up of insulated tube 2, following contact 4, conducting ring 3, fuse tube 5, sealing ring 6 and locking cap 7; Following contact 4 is installed in insulated tube 2 bottoms, and the end of thread stretches out insulated tube 2; Conducting ring 3 is installed in the pipe on insulated tube 2 tops, outside the brace protruded tube; Fuse tube 5 is installed in the insulated tube 2, and the lower end connects contact 4 down; Sealing ring 6 is installed on the insulation head of locking cap 7; Locking cap 7 is installed in the openend of insulated tube 2, and the upper contact head 8 of an end is connected on the internal thread of conducting ring 3, and is connected with the upper end of fuse tube 5.
As shown in Figure 2, transformer body overcurrent protective device 1 is installed on the transformer-cabinet 10, and the brace of conducting ring 3 is connected with transformer high-voltage porcelain vase binding post; Following contact 4 is connected with winding one end of high-tension coil.
Claims (5)
1. transformer body overcurrent protective device comprises fuse tube (5); It is characterized in that: this device also comprises insulated tube (2), following contact (4), conducting ring (3), sealing ring (6) and locking cap (7); Locking cap (7) is made up of upper contact head (8) and insulation head (9), and upper contact head (8) is fixed on the insulation head (9); Sealing ring (6) is installed on the locking cap (7); Following contact (4) is installed in insulated tube (2) bottom; Conducting ring (3) is installed in the pipe on insulated tube (2) top; Fuse tube (5) is installed in the insulated tube (2), and the lower end connects contact (4) down; Locking cap (7) is installed in the port of insulated tube (2), and the upper contact head (8) of locking cap (7) one ends is connected on the conducting ring (3), and is connected with the upper end of fuse tube (5).
2. transformer body overcurrent protective device according to claim 1 is characterized in that: following contact (4) is bolt shape, and an end is provided with external screw thread.
3. transformer body overcurrent protective device according to claim 1 is characterized in that: conducting ring (3) is provided with internal thread and brace.
4. transformer body overcurrent protective device according to claim 1 is characterized in that: upper contact head (8) is provided with and the external screw thread of conducting ring (3) screw-internal thread fit.
5. transformer body overcurrent protective device according to claim 1 is characterized in that: insulation head (9) one ends are screw shaped, and the other end is the nut shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200664456U CN202474819U (en) | 2012-02-22 | 2012-02-22 | Over-current protection device for transformer main body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200664456U CN202474819U (en) | 2012-02-22 | 2012-02-22 | Over-current protection device for transformer main body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202474819U true CN202474819U (en) | 2012-10-03 |
Family
ID=46922947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200664456U Expired - Fee Related CN202474819U (en) | 2012-02-22 | 2012-02-22 | Over-current protection device for transformer main body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202474819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511301A (en) * | 2018-05-23 | 2018-09-07 | 河南森源电气股份有限公司 | Fuse and fuse assembly, distribution transformer |
-
2012
- 2012-02-22 CN CN2012200664456U patent/CN202474819U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511301A (en) * | 2018-05-23 | 2018-09-07 | 河南森源电气股份有限公司 | Fuse and fuse assembly, distribution transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20170222 |