CN205384523U - Control by temperature change circuit and mutual -inductor secondary terminal board - Google Patents

Control by temperature change circuit and mutual -inductor secondary terminal board Download PDF

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Publication number
CN205384523U
CN205384523U CN201620059477.1U CN201620059477U CN205384523U CN 205384523 U CN205384523 U CN 205384523U CN 201620059477 U CN201620059477 U CN 201620059477U CN 205384523 U CN205384523 U CN 205384523U
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CN
China
Prior art keywords
secondary terminal
fever tablet
transformer secondary
terminal box
parallel
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.)
Expired - Fee Related
Application number
CN201620059477.1U
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Chinese (zh)
Inventor
郑强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201620059477.1U priority Critical patent/CN205384523U/en
Application granted granted Critical
Publication of CN205384523U publication Critical patent/CN205384523U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a control by temperature change circuit and mutual -inductor secondary terminal board, control by temperature change circuit include temperature controller and the parallelly connected piece group of generating heat, parallelly connected the generate heat piece of piece group including a plurality of parallel connection that generate heat, the temperature controller is with the parallelly connected piece group series connection that generates heat for switch on or break off the parallelly connected piece that generates heat and organize and power return circuit within a definite time. The temperature controller can switch on or break off control whether to have the current conveyance piece that generates heat according to ambient temperature, can generate heat after the piece that the generates heat circular telegram, because it is frivolous to generate heat the piece volume, occupation space is very little, can install in narrow and small space, for example heat in the mutual -inductor secondary terminal board in order to avoid the air to meet the cold condensation drop of water that forms. Consequently the utility model provides a be applicable to the control by temperature change circuit that heats the intensification in the mutual -inductor secondary terminal board of packing into, can effectively solve the corrosion fracture problem of terminal, and then improve the operation conditions of terminal.

Description

A kind of temperature control circuit and transformer secondary terminal box
Technical field
This utility model relates to electrical equipment technical field, is specifically related to a kind of temperature control circuit and transformer secondary terminal box.
Background technology
At present, transformer secondary terminal box, such as common 220kV outdoor stand alone type transformer secondary terminal box is after daytime being exposed to the sun of the sun, the decline of temperature during due to the late into the night, hot-air moist in transformer secondary terminal box is encountered ice-cold tank wall and is easy for forming the condensation globule, condense in the top in transformer secondary terminal box and inwall, under gravity, the globule condensed will drop on the terminal being currently running, cause terminal make moist corrosion fracture, insulation against ground resistance in loop is reduced, cause second loop grounding or short circuit, very easily cause false protection or tripping etc., even cause the malfunction of chopper, very harmful.It addition, terminal after corrosion and fracture, will produce the voltage of significantly high (even up to thousands of volts), and not only be likely to damage the insulation of Secondary Winding, and will seriously jeopardize personal safety under the long term of tide air at Secondary Winding two ends.
But because the narrow space in transformer secondary terminal box, and dehydrating unit of the prior art, such as drying box equal-volume is excessive again, it is impossible to put into the transformer secondary terminal box dehumidifying problem to solve terminal moisture-sensitive, corrosion fracture.
Utility model content
Therefore, the technical problems to be solved in the utility model is in that to overcome the defect of the dehydrating unit not being applicable to transformer secondary terminal box in prior art, thus providing a kind of temperature control circuit being applicable to load in transformer secondary terminal box and can solve the problem that the corrosion breakage problem of terminal, improve the transformer secondary terminal box of the operation conditions of terminal.
For this, this utility model provides following technical scheme:
This utility model provides a kind of temperature control circuit, including: temperature controller and fever tablet group in parallel;
Described fever tablet group in parallel includes multiple fever tablet being connected in parallel;
Described temperature controller, is connected in series with described fever tablet group in parallel, for being switched on or off the loop between described fever tablet group in parallel and power supply.
Temperature control circuit described in the utility model, described temperature controller is bimetal strip thermostat, and the lead-in wire terminal of described bimetal strip thermostat is connected with the outfan of described power supply, and the leading-out terminal of described bimetal strip thermostat is connected with the input of described fever tablet group in parallel.
Temperature control circuit described in the utility model, described fever tablet is PTC constant temp. warming sheet.
Temperature control circuit described in the utility model, described fever tablet group in parallel includes 3 described fever tablets.
This utility model additionally provides a kind of transformer secondary terminal box, at least includes the fever tablet in an above-mentioned temperature control circuit in the described transformer secondary terminal box of each phase line.
Transformer secondary terminal box described in the utility model, the temperature controller in described temperature control circuit is arranged in described transformer secondary terminal box.
Transformer secondary terminal box described in the utility model, described transformer secondary terminal box inwall and/or outer wall are provided with thermal insulative board.
Technical solutions of the utility model, have the advantage that
This utility model provides a kind of temperature control circuit, including temperature controller and fever tablet group in parallel;Fever tablet group in parallel includes multiple fever tablet being connected in parallel;Temperature controller, is connected in series with fever tablet group in parallel, for being switched on or off the loop between fever tablet group in parallel and power supply.Temperature controller can be switched on or off according to ambient temperature, because temperature controller is connected in series with fever tablet group in parallel, when temperature controller turns on, loop between fever tablet group in parallel and power supply is also turned on, all having electric current to flow through in each fever tablet, can generate heat after fever tablet energising, after fever tablet heating, the temperature in environment also can raise about, the problem because too low air temperature causes the steam in air to form the condensation globule can be prevented effectively from, it is also possible to accelerate the evaporation of the established condensation globule.Because fever tablet volume is frivolous, take up room very little, it is possible to be installed on small space, such as transformer secondary terminal box is heated avoid air to meet the cold formation condensation globule.Therefore this utility model provides a kind of temperature control circuit being applicable to and being heated heating up in loading transformer secondary terminal box, it is possible to effectively solves the corrosion breakage problem of terminal, and then improves the operation conditions of terminal.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of an instantiation of temperature control circuit in this utility model embodiment 1;
Fig. 2 is the cut-away view of an instantiation of transformer secondary terminal box in this utility model embodiment 2;
Accompanying drawing labelling:
1-temperature controller;2-parallel connection fever tablet group;11-temperature control circuit;12-thermal insulative board.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly;Can be mechanically connected, it is also possible to be electrical connection;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is also possible to be the connection of two element internals, it is possible to be wireless connections, it is also possible to be wired connection.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in this utility model.
As long as just can be combined with each other additionally, technical characteristic involved in this utility model difference embodiment disclosed below does not constitute conflict each other.
Embodiment 1
Present embodiments provide a kind of temperature control circuit, as it is shown in figure 1, include: temperature controller 1 and fever tablet group 2 in parallel;Fever tablet group 2 in parallel includes multiple fever tablet being connected in parallel;Temperature controller 1, is connected in series with fever tablet group 2 in parallel, for being switched on or off the loop between fever tablet group 2 in parallel and power supply.Specifically, temperature controller 1 can be switched on or off according to ambient temperature, because temperature controller 1 is connected in series with fever tablet group 2 in parallel, when temperature controller 1 turns on, loop between fever tablet group 2 in parallel and power supply is also turned on, each fever tablet all there is electric current flow through, can generate heat after fever tablet energising, after fever tablet heating, the temperature in environment also can raise about, the problem because too low air temperature causes the steam in air to form the condensation globule can be prevented effectively from, it is also possible to accelerate the evaporation of the established condensation globule.Because fever tablet volume is frivolous, take up room very little, it is possible to be installed on small space, such as transformer secondary terminal box is heated avoid air to meet the cold formation condensation globule.Therefore present embodiments provide a kind of being applicable to and load the temperature control circuit being heated heating up in transformer secondary terminal box, it is possible to effectively solve the corrosion breakage problem of terminal, and then improve the operation conditions of terminal.
Preferably, temperature controller 1 is bimetal strip thermostat, and the lead-in wire terminal of bimetal strip thermostat is connected with the outfan of power supply, and the leading-out terminal of bimetal strip thermostat is connected with the input of fever tablet group 2 in parallel.Specifically, bimetal strip thermostat is bimetal leaf temperature-control structure, when temperature changes, because the thermal coefficient of expansion of two sheet metals is different, it will make the degree of crook of bimetal strip thermostat change.When ambient temperature is higher than the expansion temperature of the two sheet metal, the connecting point position of two sheet metals can disconnect because of the difference of deformation, and then makes the loop between fever tablet group 2 in parallel and power supply also be disconnected;When ambient temperature is lower than the expansion temperature of the two sheet metal, the deformation caused because of expansion between two sheet metals can disappear, two sheet metal connecting point positions Guan Bis, and then makes the loop between fever tablet group 2 in parallel and power supply be also turned on.The loop that visible bimetal strip thermostat can be turned on or off between fever tablet group 2 in parallel and power supply according to the change of ambient temperature, and fever tablet electrified regulation only just can be made when ambient temperature is relatively low, while being prevented effectively from the air cold formation condensation globule of chance, greatly reduce energy consumption.Separately, because the primary structure of bimetal strip thermostat is two very thin sheet metals, size is little, occupies little space, it is possible to be installed on small space, in such as transformer secondary terminal box, install simple, highly sensitive, it is possible to control fever tablet whether electrified regulation according to the ambient temperature in transformer secondary terminal box, efficiently solve the corrosion breakage problem of terminal, it is ensured that the stable operation of electrical network.
Preferably, fever tablet is PTC constant temp. warming sheet.The operation principle of PTC constant temp. warming sheet is: when PTC constant temp. warming sheet is just initially powered up, its resistance is less, so initial current is relatively big, heating power is significantly high, so that PTC constant temp. warming sheet fast heating heats up, quick rising along with temperature, itself resistance can increase sharply and enter transition district so that very little by the electric current of PTC constant temp. warming sheet, because the time of transition is very of short duration, the surface temperature that can make PTC constant temp. warming sheet is held essentially constant value, it is achieved thermostatic control.
Preferably, fever tablet group 2 in parallel includes 3 fever tablets.Specifically, because electrical network includes tri-phase lines of A, B, C, 3 fever tablets just can substantially meet the heating and dehumidification demand of the transformer secondary terminal box of each phase line, has saved cost.
Embodiment 2
Present embodiments provide a kind of transformer secondary terminal box, as in figure 2 it is shown, the fever tablet at least included in the transformer secondary terminal box of each phase line in the temperature control circuit 11 that an embodiment 1 provides.Specifically, temperature controller in temperature control circuit 11 can be switched on or off according to ambient temperature, because temperature controller is connected in series with fever tablet group in parallel, when temperature controller turns on, loop between fever tablet group in parallel and power supply is also turned on, each fever tablet all there is electric current flow through, can generate heat after fever tablet energising, after fever tablet heating, the temperature in environment also can raise about, the problem because too low air temperature causes the steam in air to form the condensation globule can be prevented effectively from, it is also possible to accelerate the evaporation of the established condensation globule.Because fever tablet volume is frivolous, take up room very little, it is possible to be installed in transformer secondary terminal box without taking too large space.Transformer secondary terminal box in the present embodiment is by setting up heating plate, the temperature in transformer secondary terminal box can be made very little with the amplitude of variation of ambient temperature, stop humid air and assemble the erosion to terminal, efficiently solve the corrosion breakage problem of terminal, and then improve the operation conditions of terminal.
Preferably, the temperature controller in temperature control circuit 11 is arranged in transformer secondary terminal box.Specifically, temperature controller is arranged in transformer secondary terminal box, it is possible to control whether have electric current to pass through in fever tablet according to the ambient temperature in transformer secondary terminal box, it is achieved that to being precisely controlled of transformer secondary terminal box environment temperature.And because the transformer secondary terminal box internal structure of three phase lines, space and local environment are essentially identical, only temperature controller is set in the transformer secondary terminal box of a phase line, it is capable of while the heating plate in the transformer secondary terminal box of each phase line temperature control and switching simultaneously, effectively reduces cost.
Preferably, transformer secondary terminal box inwall and/or outer wall are provided with thermal insulative board 12.Specifically, by setting up thermal insulative board 12 at transformer secondary terminal box inwall and/or outer wall, it is possible to prevent the heat energy that fever tablet produces from passing through the shell undue loss of transformer secondary terminal box, reduce energy consumption.
Obviously, above-described embodiment is only for clearly demonstrating example, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation still in this utility model create protection domain among.

Claims (7)

1. a temperature control circuit, it is characterised in that including: temperature controller (1) and fever tablet group (2) in parallel;
Described fever tablet group (2) in parallel includes multiple fever tablet being connected in parallel;
Described temperature controller (1), is connected in series with described fever tablet group (2) in parallel, is used for the loop being switched on or off between described fever tablet group (2) in parallel and power supply.
2. temperature control circuit according to claim 1, it is characterized in that, described temperature controller (1) is bimetal strip thermostat, the lead-in wire terminal of described bimetal strip thermostat is connected with the outfan of described power supply, and the leading-out terminal of described bimetal strip thermostat is connected with the input of described fever tablet group (2) in parallel.
3. temperature control circuit according to claim 1 and 2, it is characterised in that described fever tablet is PTC constant temp. warming sheet.
4. temperature control circuit according to claim 3, it is characterised in that described fever tablet group (2) in parallel includes 3 described fever tablets.
5. a transformer secondary terminal box, it is characterised in that at least include the fever tablet in the temperature control circuit (11) described in an any one of claim 1-4 in the described transformer secondary terminal box of each phase line.
6. transformer secondary terminal box according to claim 5, it is characterised in that the temperature controller in described temperature control circuit (11) is arranged in described transformer secondary terminal box.
7. the transformer secondary terminal box according to claim 5 or 6, it is characterised in that described transformer secondary terminal box inwall and/or outer wall are provided with thermal insulative board (12).
CN201620059477.1U 2016-01-21 2016-01-21 Control by temperature change circuit and mutual -inductor secondary terminal board Expired - Fee Related CN205384523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620059477.1U CN205384523U (en) 2016-01-21 2016-01-21 Control by temperature change circuit and mutual -inductor secondary terminal board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620059477.1U CN205384523U (en) 2016-01-21 2016-01-21 Control by temperature change circuit and mutual -inductor secondary terminal board

Publications (1)

Publication Number Publication Date
CN205384523U true CN205384523U (en) 2016-07-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112971235A (en) * 2021-02-09 2021-06-18 罗蒙集团股份有限公司 Self-warming jacket
CN113532029A (en) * 2021-06-24 2021-10-22 华能伊敏煤电有限责任公司 Drying device and drying method for insulating and wetting treatment of current transformer with large ampere turns

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112971235A (en) * 2021-02-09 2021-06-18 罗蒙集团股份有限公司 Self-warming jacket
CN113532029A (en) * 2021-06-24 2021-10-22 华能伊敏煤电有限责任公司 Drying device and drying method for insulating and wetting treatment of current transformer with large ampere turns

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160713

Termination date: 20190121

CF01 Termination of patent right due to non-payment of annual fee