CN205081457U - Transformer excess temperature protection device - Google Patents
Transformer excess temperature protection device Download PDFInfo
- Publication number
- CN205081457U CN205081457U CN201520683900.0U CN201520683900U CN205081457U CN 205081457 U CN205081457 U CN 205081457U CN 201520683900 U CN201520683900 U CN 201520683900U CN 205081457 U CN205081457 U CN 205081457U
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- China
- Prior art keywords
- transformer
- memory alloy
- alloy wire
- fork
- fixed
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Abstract
The utility model provides a transformer excess temperature protection device, its technical essential lies in: stationary metal including locating on the transformer wiring terminal power cord contacts, fixes pendulum rod and memory alloy silk on transformer housing, the middle part of pendulum rod is fixed on the casing of transformer through the pivot, the position that one side of memory alloy silk is fixed on the casing of transformer, be in the pivot below on opposite side and the pendulum rod links to each other, the upper end of pendulum rod is equipped with the removal metal contact, and the removal metal contact did not contact with stationary metal and contacts when the memory alloy silk took place to deform. The utility model discloses accessible memory alloy silk with temperature changes and the control transformer power is come to the characteristic that takes place deformation or recover former form break -make to carry out the excess temperature protection to the transformer.
Description
Technical field:
The utility model relates to protection equipment for transformer, is specifically related to a kind of transformer over-temperature protection device.
Background technology:
The too high meeting of ambient temperature directly affects the job stability of transformer, has larger impact to the useful life of transformer self and internal electronic device thereof.And transformer is after long-term work, himself temperature can raise gradually, for guaranteeing the normal work of transformer, the heat radiation of transformer seems particularly important, if but ambient temperature is too high, the radiating effect of transformer is also just not ideal enough, in the case, if transformer works on, very easily cause the damage of the electronic devices and components of its inside, thus thoroughly affect the useful life of transformer.
Utility model content:
The utility model is for overcoming the deficiencies in the prior art; provide a kind of transformer over-temperature protection device; it varies with temperature by memory alloy wire and deformation occurs or the characteristic of the state that resiles carrys out the break-make of control transformer power supply, thus carries out overheat protector to transformer.
Transformer over-temperature protection device of the present utility model, the technical scheme adopted for achieving the above object is: comprise the fixing metal contact be located on transformer connecting terminal power line, be fixed on the fork on transformer shell and memory alloy wire, the middle part of described fork is fixed on the housing of transformer by rotating shaft, the side of described memory alloy wire is fixed on the housing of transformer, opposite side is connected with position fork is in below rotating shaft, the upper end of described fork is provided with moving metal contact, memory alloy wire moves hard contact and contacts with fixing metal contact when there is not deformation.
As further improvement of the utility model, the below described fork being in rotating shaft is provided with connecting axle, one end of memory alloy wire is fixed on the housing of transformer, the other end is fixed on the housing of transformer after walking around connecting axle, hang on connecting axle by this mode by the bending place of memory alloy wire, it is quick and easy for installation, time saving and energy saving.
As further improvement of the utility model, also comprise reseting spring leaf, the bottom that one end is fixed on the housing of transformer, the other end is resisted against fork of described reseting spring leaf, when memory alloy wire recovers normal morphology, reseting spring leaf, by fork pushed home, makes moving metal contact again contact to connect the power supply of transformer with fixing metal contact.
As further improvement of the utility model, described reseting spring leaf is in the below of memory alloy wire, can save the thrust of reseting spring leaf, is convenient to fork and resets.
As further improvement of the utility model, described connecting axle circumferentially offers draw-in groove, can memory alloy wire is fixed in draw-in groove, prevent it from coming off on connecting axle, the stability that both raisings connect.
As further improvement of the utility model, the deformation temperature of described memory alloy wire is 45 DEG C.
The beneficial effects of the utility model are: the utility model utilizes the characteristic of memory alloy wire, when ambient temperature rises to the deformation temperature higher than memory alloy wire, can mechanical deformation be there is in itself, thus pull fork to rotate clockwise centered by rotating shaft, make moving metal contact and fixing metal contact separation, thus disconnecting transformer power supply makes transformer quit work, to carry out overheat protector to transformer, when the deformation temperature of ambient temperature lower than himself, memory alloy wire recovers original form, by fork pushed home, thus moving metal contact is contacted again with fixing metal contact, transformer frequency response is reclosed, its integrated operation is simple and efficient, safe and reliable.Pulling force to fork during for increasing memory alloy wire generation deformation further, memory alloy wire of the present utility model adopts the mode of middle part bending to hang on the connecting axle of fork, thus be equivalent to formation two memory alloy wires fork is pulled, to pull fork to rotate along rotating shaft, on this basis, can reset after memory alloy wire resiles state for making fork, the utility model is provided with reseting spring leaf further, when memory alloy wire generation deformation, the thrust of reseting spring leaf to fork is less than the pulling force of memory alloy wire to fork, after memory alloy wire resiles state, fork can reset under the thrust of reseting spring leaf.The utility model global design advantages of simple, safe and reliable, be convenient to promotion and implementation.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of embodiment one of the present utility model;
Fig. 2 is the structural representation of embodiment two of the present utility model;
Fig. 3 is the structural representation of connecting axle in embodiment two.
Embodiment:
Embodiment one
With reference to Fig. 1, transformer over-temperature protection device in the present embodiment, comprise the fixing metal contact 5 be located on transformer connecting terminal power line, be fixed on the fork 1 on transformer shell and memory alloy wire 2, the middle part of described fork 1 is fixed on the housing of transformer by rotating shaft 4, the side of described memory alloy wire 2 is fixed on the housing of transformer, opposite side is connected with the position be in below rotating shaft 4 on fork 1, the upper end of described fork 1 is provided with moving metal contact 5, described fixing metal contact 5 has two, one of them fixing metal contact 5 connects binding post, another fixing metal contact 5 connects another binding post by primary coil, memory alloy wire 2 moves hard contact 6 and contacts with two fixing metal contacts 5 and make transformer form closed-loop path when there is not deformation.The deformation temperature of described memory alloy wire 2 is 45 DEG C.
When ambient temperature is higher than 45 DEG C, there is deformation and become bending in memory alloy wire 2, its length is shortened, and then pull fork 1 to turn clockwise along rotating shaft 4, the moving metal contact 6 being located at fork 1 upper end is separated with two fixing metal contacts 5, thus the power supply of disconnecting transformer, reach the object of transformer being carried out to overheat protector; When ambient temperature is lower than 45 DEG C, memory alloy wire 2 recovers original form, becomes straight configuration by case of bending, promotes fork 1 and resets, thus moving metal contact 6 is contacted with fixing metal contact 5 again, transformer frequency response is reclosed.
Embodiment two
With reference to Fig. 2 and Fig. 3, the present embodiment and embodiment one unlike, the below described fork 1 being in rotating shaft 4 is provided with connecting axle 7, one end of memory alloy wire 2 is fixed on the housing of transformer, the other end is fixed on the housing of transformer after walking around connecting axle 7, can be formed like this and be equivalent to two memory alloy wires, 2 pairs of forks 1 and pull, thus improve the pulling force to fork 1.On this basis, can reset after memory alloy wire 2 resiles state for making fork 1, this device also comprises reseting spring leaf 3, the bottom that one end of described reseting spring leaf 3 is fixed on the housing of transformer, the other end is resisted against fork 1, and reseting spring leaf 3 is in the below of memory alloy wire 2, after memory alloy wire 2 resiles state, reseting spring leaf 3 promotes fork 1 and resets.Described connecting axle 7 circumferentially offers the draw-in groove 8 that can hold memory alloy wire, memory alloy wire 2 can be avoided to come off on connecting axle 7 by draw-in groove 8, the reliability that both raisings connect, after the memory alloy wire 2 after there is deformation resiles state, it can shift out in draw-in groove 8, and after fork 1 resets under the promotion of reseting spring leaf 3, memory alloy wire 2 enters in draw-in groove 8 again.
Claims (6)
1. a transformer over-temperature protection device, it is characterized in that: comprise the fixing metal contact (5) be located on transformer connecting terminal power line, be fixed on the fork (1) on transformer shell and memory alloy wire (2), the middle part of described fork (1) is fixed on the housing of transformer by rotating shaft (4), the side of described memory alloy wire (2) is fixed on the housing of transformer, opposite side is connected with position fork (1) being in rotating shaft (4) below, the upper end of described fork (1) is provided with moving metal contact (5), memory alloy wire (2) moves hard contact (6) and contacts with fixing metal contact (5) when there is not deformation.
2. a kind of transformer over-temperature protection device as claimed in claim 1; it is characterized in that: the below described fork (1) being in rotating shaft (4) is provided with connecting axle (7), be fixed on the housing of transformer after one end of memory alloy wire (2) is fixed on the housing of transformer, the other end walks around connecting axle (7).
3. a kind of transformer over-temperature protection device as claimed in claim 2; it is characterized in that: also comprise reseting spring leaf (3), the bottom that one end of described reseting spring leaf (3) is fixed on the housing of transformer, the other end is resisted against fork (1).
4. a kind of transformer over-temperature protection device as claimed in claim 3, is characterized in that: described reseting spring leaf (3) is in the below of memory alloy wire (2).
5. a kind of transformer over-temperature protection device as claimed in claim 2, is characterized in that: described connecting axle (7) circumferentially offers draw-in groove (8).
6. a kind of transformer over-temperature protection device as described in any one of claim 1-5, is characterized in that: the deformation temperature of described memory alloy wire (2) is 45 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683900.0U CN205081457U (en) | 2015-09-06 | 2015-09-06 | Transformer excess temperature protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683900.0U CN205081457U (en) | 2015-09-06 | 2015-09-06 | Transformer excess temperature protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081457U true CN205081457U (en) | 2016-03-09 |
Family
ID=55433833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520683900.0U Expired - Fee Related CN205081457U (en) | 2015-09-06 | 2015-09-06 | Transformer excess temperature protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205081457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048412A (en) * | 2015-09-06 | 2015-11-11 | 重庆民生变压器有限责任公司 | Transformer over-temperature protection device |
-
2015
- 2015-09-06 CN CN201520683900.0U patent/CN205081457U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048412A (en) * | 2015-09-06 | 2015-11-11 | 重庆民生变压器有限责任公司 | Transformer over-temperature protection device |
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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: 20160309 Termination date: 20160906 |