CN105023488A - Device for simulating heating of connection bolt in transformer - Google Patents
Device for simulating heating of connection bolt in transformer Download PDFInfo
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- CN105023488A CN105023488A CN201410178530.5A CN201410178530A CN105023488A CN 105023488 A CN105023488 A CN 105023488A CN 201410178530 A CN201410178530 A CN 201410178530A CN 105023488 A CN105023488 A CN 105023488A
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- resistance wire
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- shaped resistance
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- coupling bolt
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Abstract
The invention provides a device for simulating heating of a connection bolt in a transformer. The device comprises a connection bolt (1) provided with a cavity (2), a resistor (5) coated with a U-shaped resistance wire (6), a screw (3) used for sealing the cavity (2), and a power control box (7) used for providing current for the U-shaped resistance wire (6), wherein the middle of the screw (3) is provided with a through hole (4) for enabling two ends of the U-shaped resistance wire to pass through; the resistor (5) is placed in the cavity (2); the screw (3) is arranged at an outlet of the cavity (2); and the two ends of the U-shaped resistance wire penetrate out from the through hole (4) and are respectively connected with two output ends of the power control box (7). The device provided by the invention is simple in structure, and can simulate the heating connection bolt in the transformer in a laboratory.
Description
Technical field
The present invention relates to mechanical technique, particularly relate to the analogue means of coupling bolt heating in a kind of analogue transformer.
Background technology
Transformer is one of visual plant of electrical network, is responsible for the task of electrical network transmission of electric energy.Current, stray transformer flux can produce eddy current on the coupling bolt of the upper and lower fuel tank of connection transformer, thus causes coupling bolt to generate heat.If the coupling bolt of transformer occurs that large area is overheated, the O-ring seal accelerated deterioration at transformer coupling bolt place will be caused, reduce transformer sealing property, cause transformer leakage of oil, main-transformer may be caused time serious to stop transport, greatly have impact on transformer and power network safety operation.
For this reason, need operation maintenance personnel regularly to carry out infrared diagnostics to transformer, search heating bolt.In order to improve the infrared diagnostics level of operation maintenance personnel, needing to carry out infrared diagnostics training to maintainer, with the heating process making maintainer understand coupling bolt, ensureing the safe operation of transformer.
But, do not simulate the device of coupling bolt heating in prior art, cannot give training maintainer, in addition, give training according to real transformer, cause cost too high.Thus, how being equal to stray transformer flux in laboratory setting causes the coupling bolt of heating to become the current technical issues that need to address.
Summary of the invention
For solving above-mentioned technical matters, the invention provides the device of coupling bolt heating in a kind of analogue transformer.
The invention provides the device of coupling bolt heating in a kind of analogue transformer, comprising:
Be provided with the coupling bolt of cavity, wrap up the resistance of U-shaped resistance wire, for seal described cavity screw, for providing the power controling box of electric current for described U-shaped resistance wire;
The centre of described screw is provided with the through hole of two terminations for passing described U-shaped resistance wire;
Wherein, described resistance is placed in described cavity, and described screw is arranged on the outlet of described cavity, and two terminations of described U-shaped resistance wire pass two output terminals connecting described power controling box respectively from described through hole.
Alternatively, described power controling box comprises: AC power and switch;
Wherein, a termination of the described U-shaped resistance wire of an output terminal electrical connection of described AC power, another output terminal of described AC power is electrically connected one end of described switch, another termination of the described U-shaped resistance wire of other end electrical connection of described switch.
Alternatively, described power controling box also comprises: for regulating the adjustable resistance of electric current;
A termination of the described U-shaped resistance wire of one end electrical connection of described adjustable resistance, the other end of described adjustable resistance is electrically connected an output terminal of described AC power.
Alternatively, the inwall of described cavity is helicitic texture.
As shown from the above technical solution, the device of coupling bolt heating in analogue transformer of the present invention, by arranging cavity in coupling bolt, and then the resistance being enclosed with U-shaped resistance wire is placed in described cavity, by screw by cavities seals, and then two of U-shaped resistance wire terminations are stretched out outside screw, and realize being electrically connected with power controling box forming loop, resistance wire can be made to generate heat, the process of coupling bolt heating in analogue transformer can be realized in the lab.
Accompanying drawing explanation
The schematic diagram of the analogue transformer that Figure 1A provides for one embodiment of the invention;
Figure 1B is the structural representation of the device that the simulation coupling bolt in Figure 1A generates heat;
Fig. 1 C is the part-structure schematic diagram of the device that the simulation coupling bolt in Figure 1A generates heat;
Fig. 2 A is the front view of the coupling bolt in Fig. 1 C;
Fig. 2 B is the vertical view of coupling bolt in Fig. 1 C;
Fig. 3 A is the front view of screw in Fig. 1 C;
Fig. 3 B is the vertical view of screw in Fig. 1 C;
Fig. 4 is the structural representation of the resistance in Fig. 1 C;
Fig. 5 is the structural representation of power controling box in Figure 1B.
Embodiment
Figure 1A shows the schematic diagram of the analogue transformer that one embodiment of the invention provides, Figure 1B shows the structural representation of the device of simulation coupling bolt heating, the part-structure schematic diagram of the device of the simulation coupling bolt heating that Fig. 1 C shows, shown in Figure 1A to Fig. 1 C, in the analogue transformer of the present embodiment coupling bolt heating device can comprise: be provided with the coupling bolt 1 of cavity 2, wrap up the resistance 5 of U-shaped resistance wire 6, for seal described cavity 2 screw 3, for providing the power controling box 7 of electric current for described U-shaped resistance wire 6.
In the present embodiment, the centre of screw 3 is provided with the through hole 4 of two terminations for passing described U-shaped resistance wire 6;
Wherein, described resistance 5 is placed in described cavity 2, and described screw 3 is arranged on the outlet of described cavity 2, and two terminations of described U-shaped resistance wire pass two output terminals connecting described power controling box 7 respectively from described through hole 4.
Alternatively, in a particular application, two of a U-shaped resistance wire termination can be flushed with one end away from resistance of screw 3, as shown in Figure 1 C, to realize the object of training.
The device of coupling bolt heating in the analogue transformer in the present embodiment, can in laboratory simulation transformer the heating process of coupling bolt, effect is true to nature, easy and simple to handle, well can realize result of training, enhancement training efficiency.
For the clearer structure understanding the device that simulation coupling bolt of the present invention heating is described, below separately explanation is carried out to each parts.
As shown in Figure 2 A and 2 B, shown in Fig. 2 A is the main TV structure of coupling bolt, and shown in Fig. 2 B is the plan structure of coupling bolt, and the centre of the coupling bolt 1 in the present embodiment is provided with cavity 2, and it is for placing resistance 5.It should be noted that coupling bolt 1 in the present embodiment is only for simulating use, not as the coupling bolt in transformer.In addition, in the present embodiment, do not limit the size of the diameter of cavity 2, resistance 5 can be held.
Preferably, the inwall of cavity 2 can be helicitic texture, can place resistance 5 preferably thus.In a particular application, for reducing the complexity of preparation technology, and not affecting the use of said apparatus, can prepare in the inside of coupling bolt 1 cavity that inwall is helicitic texture.
The main TV structure of what Fig. 3 A showed is screw, Fig. 3 B is the vertical view of screw, and the screw 3 of the present embodiment is for the cavity 2 of the bolt 1 that is tightly connected.Through hole 4 in screw 3 stretches out for making the termination of U-shaped resistance wire 6.It should be noted that two terminations of the U-shaped resistance wire 6 being positioned at coupling bolt do not contact.A through hole 4 is only shown in Fig. 3 B.In a particular application, screw 3 can be arranged two through holes 4, this through hole 4 stretches out for making the termination of U-shaped resistance wire 6.Especially, U-shaped resistance wire 6 is insulate with screw 3.
Fig. 4 shows the structure of resistance 5, and this resistance 5 is enclosed with U-shaped resistance wire 6, and is do not form closed-loop path at the inner U-shaped resistance wire of resistance.Because U-shaped resistance wire 6 can heating power, heat transfer is to resistance 5, and then resistance 5 can be heating resistor.In the present embodiment, resistance 5 conducts heat to coupling bolt 1, can realize the heating of coupling bolt 1 thus, and is the heating at coupling bolt 1 center, basically identical with the too high heating process caused of the coupling bolt magnetic flux density inside of transformer in practical application.
In addition, as shown in Figure 5, the power controling box 7 in the present embodiment can comprise: AC power 10 and switch 11;
A termination of the described U-shaped resistance wire 6 of one output terminal electrical connection of described AC power 10, another output terminal of described AC power 10 is electrically connected one end of described switch 11, another termination of the described U-shaped resistance wire 6 of other end electrical connection of described switch 11.
Preferably, described power controling box 7 also comprises: for regulating the adjustable resistance 9 of electric current, as shown in FIG. 1A and 1B; A termination of the described U-shaped resistance wire 6 of one end electrical connection of adjustable resistance 9, the other end of described adjustable resistance 9 is electrically connected an output terminal of described AC power 10.
In the present embodiment, AC power 10 provides electric energy for whole circuit, and switch 11 is used for controlling the break-make in whole loop, and adjustable resistance 9 can regulate the heating power of U-shaped resistance wire 6.When switch 11 closes, resistance 5 generates heat, and transfers heat to coupling bolt 1, makes coupling bolt be the condition of high temperature.
In a particular application, as shown in figure on the downside of Figure 1A left hand view and Figure 1B, one end of adjustable resistance 9 is electrically connected one end of described resistance wire 6 by wire 8, the other end of described adjustable resistance 9 is electrically connected with an output terminal of described AC power 10, another output terminal of described AC power 10 is electrically connected with one end of described switch 11, and the other end of described switch 11 is electrically connected the other end of described resistance wire 6 by wire.
In analogue transformer in the present embodiment, the control circui of the device of coupling bolt heating is simple, the temperature of coupling bolt is adjustable, different heating powers can be met, and the U-shaped resistance wire for generating heat in the present embodiment arranges hidden, simulate effect is true to nature, well can realize result of training, enhancement training efficiency.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a device for coupling bolt heating in analogue transformer, is characterized in that, comprising:
The coupling bolt (1) being provided with cavity (2), the resistance (5) wrapping up U-shaped resistance wire (6), for seal described cavity (2) screw (3), for providing the power controling box (7) of electric current for described U-shaped resistance wire (6);
The centre of described screw (3) is provided with the through hole (4) of two terminations for passing described U-shaped resistance wire;
Wherein, described resistance (5) is placed in described cavity (2), described screw (3) is arranged on the outlet of described cavity (2), and two terminations of described U-shaped resistance wire pass two output terminals connecting described power controling box (7) respectively from described through hole (4).
2. device according to claim 1, is characterized in that, described power controling box (7) comprising: AC power (10) and switch (11);
Wherein, a termination of the described U-shaped resistance wire (6) of one output terminal electrical connection of described AC power (10), another output terminal of described AC power (10) is electrically connected one end of described switch (11), another termination of the described U-shaped resistance wire (6) of other end electrical connection of described switch (11).
3. device according to claim 2, is characterized in that, described power controling box (7) also comprises: for regulating the adjustable resistance (9) of electric current;
A termination of the described U-shaped resistance wire (6) of one end electrical connection of described adjustable resistance (9), the other end of described adjustable resistance (9) is electrically connected an output terminal of described AC power (10).
4., according to the arbitrary described device of claims 1 to 3, it is characterized in that, the inwall of described cavity (2) is helicitic texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178530.5A CN105023488A (en) | 2014-04-29 | 2014-04-29 | Device for simulating heating of connection bolt in transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178530.5A CN105023488A (en) | 2014-04-29 | 2014-04-29 | Device for simulating heating of connection bolt in transformer |
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| Publication Number | Publication Date |
|---|---|
| CN105023488A true CN105023488A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410178530.5A Pending CN105023488A (en) | 2014-04-29 | 2014-04-29 | Device for simulating heating of connection bolt in transformer |
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| Country | Link |
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| CN (1) | CN105023488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461355A (en) * | 2018-12-21 | 2019-03-12 | 南京工程学院 | A kind of electric power demonstrating model |
Citations (7)
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|---|---|---|---|---|
| CN2187227Y (en) * | 1993-12-23 | 1995-01-11 | 镇江南方电焊设备厂 | Bolt electric heater for repairing steam turbine |
| JP2005300827A (en) * | 2004-04-09 | 2005-10-27 | Benetsuse Corp:Kk | Wiring segment, and teaching material for electricity experiment having the wiring segment |
| CN201318240Y (en) * | 2008-12-12 | 2009-09-30 | 殷锁柱 | Special heater for engine |
| CN201418164Y (en) * | 2009-06-24 | 2010-03-03 | 于翔 | Bolt induction heating device |
| CN203085029U (en) * | 2012-12-17 | 2013-07-24 | 中国核电工程有限公司 | Electric heater having function of different power distribution simulation |
| CN103481477A (en) * | 2013-10-11 | 2014-01-01 | 昆山市华浦塑业有限公司 | Heating injection molding machine of screw rod |
| CN203799549U (en) * | 2014-04-29 | 2014-08-27 | 国网山西省电力公司电力科学研究院 | Device for simulating heating of connection bolt in transformer |
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2014
- 2014-04-29 CN CN201410178530.5A patent/CN105023488A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187227Y (en) * | 1993-12-23 | 1995-01-11 | 镇江南方电焊设备厂 | Bolt electric heater for repairing steam turbine |
| JP2005300827A (en) * | 2004-04-09 | 2005-10-27 | Benetsuse Corp:Kk | Wiring segment, and teaching material for electricity experiment having the wiring segment |
| CN201318240Y (en) * | 2008-12-12 | 2009-09-30 | 殷锁柱 | Special heater for engine |
| CN201418164Y (en) * | 2009-06-24 | 2010-03-03 | 于翔 | Bolt induction heating device |
| CN203085029U (en) * | 2012-12-17 | 2013-07-24 | 中国核电工程有限公司 | Electric heater having function of different power distribution simulation |
| CN103481477A (en) * | 2013-10-11 | 2014-01-01 | 昆山市华浦塑业有限公司 | Heating injection molding machine of screw rod |
| CN203799549U (en) * | 2014-04-29 | 2014-08-27 | 国网山西省电力公司电力科学研究院 | Device for simulating heating of connection bolt in transformer |
Non-Patent Citations (3)
| Title |
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| 李家然: "主变压器连接螺栓发热原因及其处理措施分析", 《工业技术与产业经济》 * |
| 段彬，俞军 等: "220 kV 变压器顶盖连接螺栓发热分析与处理方法", 《浙江电力》 * |
| 陈小明: "浅谈变压器上、下油箱连接螺栓发热烧红的解决方法", 《变压器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461355A (en) * | 2018-12-21 | 2019-03-12 | 南京工程学院 | A kind of electric power demonstrating model |
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Application publication date: 20151104 |
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