CN108196526A - Oil surface thermostat for transformer verification system and method based on intelligent thermal field - Google Patents
Oil surface thermostat for transformer verification system and method based on intelligent thermal field Download PDFInfo
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- CN108196526A CN108196526A CN201711461928.XA CN201711461928A CN108196526A CN 108196526 A CN108196526 A CN 108196526A CN 201711461928 A CN201711461928 A CN 201711461928A CN 108196526 A CN108196526 A CN 108196526A
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- oil
- thermometer
- oil groove
- thermostat
- temperature
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention discloses a kind of oil surface thermostat for transformer verification systems and method based on intelligent thermal field, convenient reliably efficiently oil surface thermostat can be detected and be calibrated；Effectively promote efficiency and the unnecessary power down that oil surface thermostat is safeguarded.The present invention includes intelligent temperature field assembly, and the temperature switch input interface, 4~20mA input interfaces and the Pt100 input interfaces that are electrically connected with temperature switch output interface, 4~20mA output interfaces and Pt100 output interfaces are separately provided on the front panel of intelligent temperature field assembly；The standard thermometer input interface for being electrically connected standard thermometer is additionally provided on the front panel of the intelligent temperature field assembly；The intelligent temperature field assembly includes master controller, and the master controller is electrically connected the temperature switch input interface, 4~20mA input interfaces, Pt100 input interfaces and standard thermometer input interface by the enclosure interior of intelligent temperature field assembly；The master controller is connected with semiconductor heating cooling piece and radiator fan control.
Description
Technical field
The present invention relates to the Calibration Technology of the oil surface thermostat of transformer, specifically for the inspection of the oil surface thermostat of transformer
It surveys.
Background technology
In the various equipment of electric system, power transformer is one of main equipment, wherein oil-immersed transformer
Whether oil temperature and pasta are normally one of key parameters of relationship transformer normal operation, and oil surface thermostat for transformer is to ensure
The crucial equipment of this parameter.The necessity of oil surface thermostat for transformer rapid verification just seems especially prominent.
Live pointer table and backstage digital display are two independent components in the temperature controller of transformer oil interface, form ginseng mutually
According to.When the oil surface temperature of the two instruction is inconsistent, can not but it judge, the disassembly and assembly of oil surface thermostat is very troublesome,
It is operated after being had a power failure, causes the delay for normal work；The verification of existing oil surface thermostat is by artificial
It examines and determine, the calibrating of the switching signal of the different temperatures position of pointer and temperature switch is carried out separately, entirely manually
Operating process is very cumbersome, and also easily error, much thinks factor because having brought into.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that it provides a kind of based on intelligence
The oil surface thermostat for transformer verification system and method for thermal field convenient reliably efficiently can be examined oil surface thermostat
It surveys and calibrates；Effectively promote efficiency and the unnecessary power down that oil surface thermostat is safeguarded.
In order to achieve the above object, verification system disclosed by the invention is achieved using following technical scheme：
Oil surface thermostat for transformer verification system based on intelligent thermal field, it is defeated that the oil surface thermostat includes temperature switch
Outgoing interface, thermometer thermometer bulb, 4~20mA output interfaces and Pt100 output interfaces；Comprising intelligent temperature field assembly, intelligent thermal field group
It is separately provided on the front panel of part and temperature switch output interface, 4~20mA output interfaces and Pt100 output interfaces electricity
Temperature switch input interface, 4~20mA input interfaces and the Pt100 input interfaces of connection；
It is additionally provided on the front panel of the intelligent temperature field assembly defeated for being electrically connected the standard thermometer of standard thermometer
Incoming interface；
The intelligent temperature field assembly includes master controller, and the master controller is electrically connected by the enclosure interior of intelligent temperature field assembly
Connect the temperature switch input interface, 4~20mA input interfaces, Pt100 input interfaces and standard thermometer input interface；It is described
Intelligent temperature field assembly also includes the oil groove for placing the standard thermometer and the thermometer thermometer bulb；The intelligence thermal field group
Part also includes the semiconductor heating cooling piece for the oil groove that heats and freeze, and the semiconductor heating cooling piece uniformly attaches
In the outer surface of the left and right sides of the oil groove；It is installed with heat-conducting plate respectively on the left and right sides outer surface of the oil groove,
Cooling fin is evenly equipped on heat-conducting plate；Thermal insulation board is provided on the surface of the front and rear sides of the oil groove；
The bottom surface of the housing of intelligent temperature field assembly is mount holder, and mount holder corresponds to the position of the cooling fin of the left and right sides
The radiator fan mounting hole offered for fixing radiator fan, radiator fan be mounted on cooling fin and the mount holder on
Between surface；
The master controller is connected with the semiconductor heating cooling piece and radiator fan control.
A kind of preferred embodiment as verification system disclosed by the invention：Transformer oil is filled in the oil groove,
The oil groove bottom is equipped with the magnetic oil float component for stirring transformer oil, and the magnetic oil float component includes mixing control mould
Block, magnetic core, magnet exciting coil and the magnetic oil float being placed in the oil groove, the magnetic oil float are cylindrical or rice font permanent magnetism
Body；The bottom of magnetic core is connected for cross, and there are four magnetic poles in 90 degree of extensions of criss-cross end bending；The magnet exciting coil
Equal with magnetic pole quantity, magnet exciting coil is wrapped in the magnetic pole of magnetic core, and magnet exciting coil is connect with the mixing control module；It is described
Mixing control module is integrated in the master controller.
A kind of preferred embodiment as verification system disclosed by the invention：It is provided in the oil groove and is transmitted for heat
Heat-conducting block, heat-conducting block be with the matched cylindrical structure of oil groove inner surface configuration, heat-conducting block offers to insert from top to bottom
Enter the blind hole of thermometer thermometer bulb and standard thermometer.
A kind of preferred embodiment as verification system disclosed by the invention：It is provided in the oil groove and is transmitted for heat
Heat-conducting block, heat-conducting block be with the matched cylindrical structure of oil groove inner surface configuration, heat-conducting block offers to insert from top to bottom
Enter the jack of thermometer thermometer bulb and standard thermometer；The jack is through-hole；The magnetic oil float is arranged on the heat-conducting block bottom surface
Between oil groove bottom surface.
A kind of preferred embodiment as verification system disclosed by the invention：The quantity of the semiconductor heating cooling piece
It is four；The left and right sides of oil groove attaches two respectively；It is circular cross section inside oil groove, the outer surface of the left and right sides of oil groove
It is designed as flat shape；The rear portion of the housing of the intelligent temperature field assembly is rear shell, and the front panel of housing is close to bottom position
Display panel, display panel are ramp structure, and the top of housing sets the head cover for fixing oil groove；The bottom four of the housing
Angle sets four footing；The master controller is arranged in the space between thermal insulation board and rear shell, between thermal insulation board and front panel
Space be provided with display screen and drive circuit board, display screen is corresponding with the position of the display panel and angle.
A kind of preferred embodiment as verification system disclosed by the invention：The radiation air installed on the mount holder
The quantity of fan is eight；And mount holder opens up platform of the position of radiator fan mounting hole for protrusion.
A kind of preferred embodiment as verification system disclosed by the invention：The outer surface of the oil groove and thermal insulation board,
Insulating foam is filled between heat-conducting plate；The insulating foam is polyurethane foam filler material.
A kind of preferred embodiment as verification system disclosed by the invention：The temperature switch of the oil surface thermostat is defeated
Outgoing interface exports four-way switch signal, corresponding, the switch of four different locations is set to refer on the dial plate of the oil surface thermostat
Show node；The enclosure interior is provided with the accumulator for power supply；Testing jig, the temperature are provided at the top of the housing
The temperature-sensitive part and probe segment of meter temperature packet and standard thermometer go deep into oil groove, and rest part is fixed on the testing jig.
A kind of preferred embodiment as verification system disclosed by the invention：The aperture of the oil groove is 63~64mm；
The heating refrigeration section of the semiconductor heating cooling piece is -10 DEG C~135 DEG C；The standard thermometer is in the position far from probe
Install 90 degree of corner structure；The oil groove is built-in with the temperature for controlling semiconductor heating cooling piece heating cryogenic temperature
Sensor, the temperature sensor are connect with the master controller；The standard thermometer input interface be serial ports, the standard
Temperature is calculated as the digital thermometer for including data storage.
The invention also discloses the oil surface thermostat calibration methods based on intelligent thermal field, use any above-mentioned calibrating system
System performs following steps：
(1) 3W quickly judges；By 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and intelligent thermal field group
4~20mA input interfaces of part, the electrical connection of Pt100 input interfaces；4~20mA signals numerical value, Pt100 signals numerical value and pasta temperature
When the display numerical value of control device pointer is consistent, then judge that oil surface thermostat pointer is shown normally；As 4~20mA signals numerical value, Pt100
When signal numerical value shows that numerical value is inconsistent with oil surface thermostat pointer, then following oil surface thermostat pointer verification step is performed；
Thermometer thermometer bulb, the standard thermometer of oil surface thermostat is are placed in by the oil surface thermostat pointer verification step
In oil groove, 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and 4~20mA of intelligent temperature field assembly are inputted
Interface, the electrical connection of Pt100 input interfaces；After heating oil tank with the numerical value of standard thermometer judge respectively 4~20mA signals numerical value,
Pt100 signals numerical value and oil surface thermostat pointer show whether numerical value is accurate.
A kind of preferred embodiment as calibration method disclosed by the invention：Also include the temperature switch of oil surface thermostat
The step of calibration：
S1：The temperature switch output interface of oil surface thermostat and the temperature switch input interface of intelligent temperature field assembly are electrically connected
It connects；
S2：Set the heating temperature section of oil groove；
S3：The different location switch letter that after main controller controls heating, master controller is read, record and displays temperature switch
Number numerical value, it is whether accurate according to result temperature switch signal of making an inventory.
Present invention has the advantages that：
Oil surface thermostat for transformer verification system and method disclosed by the invention based on intelligent thermal field introduce pasta
After the detection of temperature controller, can rapid field inspection be carried out to temperature controller with " 3W " comparison method by the self oil temperature of equipment first
Fixed, three kinds of magnitudes such as temperature controller are not overproof, you can judgement temperature controller is qualified, if verification result is overproof, you can with intelligence
The oil groove that energy thermal field component provides carries out rapid verification as simulated environment.The temperature reference of oil groove is provided using standard thermometer
Standard value carries out thermal field heating cooling control using conductor temperature control device, quick accurate.It can be intuitive efficient at the scene
Reliably oil surface thermostat is realized and is detected.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of specific embodiment of the present invention；
Fig. 2 is a kind of structure diagram in the main view direction of specific embodiment of the intelligent temperature field assembly of the present invention；
Fig. 3 is the internal structure explosive view of the intelligent temperature field assembly of the present invention；
Fig. 4 is a kind of principle schematic diagram of specific embodiment of the magnetic oil float component of the present invention；
Fig. 5 is the structure diagram of the overlook direction of Fig. 5；It is the effect removed after oil groove and stirring oil float；
Fig. 6 is a kind of structure diagram of the overlook direction of specific embodiment of the heat-conducting block of the present invention；
Fig. 7 be Fig. 6 A-A to schematic cross-sectional view.
Reference sign：
100- oil surface thermostats, 101- temperature switch output interfaces, 102- thermometer thermometer bulbs, 103-4~20mA outputs connect
Mouthful, 104-Pt100 output interfaces；200- intelligent temperature field assemblies, 201- temperature switch input interfaces, 203-4~20mA inputs connect
Mouthful, 204-Pt100 input interfaces, 205- standard thermometer input interfaces, 206- standard thermometers, 207- display panels, 208-
Front panel, 209- rear shells, 210- footing, the right cooling fins of 211-, 212- heat-conducting plates, 213- display screens, 214- drive circuit boards,
215- mount holders, 216- radiator fan mounting holes, the left cooling fins of 217-, 218- master controllers, 219- head covers, 220- oil grooves,
221- thermal insulation boards, 222- magnetic oil float components, 223- radiator fans, 224- magnetic oil floats, 225- semiconductor heating cooling pieces；300- is led
Heat block, 301- jacks；2201- mixing control modules, 2202- magnet exciting coils, 2203- magnetic cores, 2231- magnetic poles.
Specific embodiment
The specific embodiment of the invention is described with reference to the accompanying drawings and embodiments：
As shown in Fig. 1~7, it illustrates the specific embodiment of the present invention, as shown in the figure, disclosed by the invention be based on intelligence
Can thermal field oil surface thermostat for transformer verification system, the oil surface thermostat 100 include temperature switch output interface 101,
Thermometer thermometer bulb 102,4~20mA output interfaces 103 and Pt100 output interfaces 104；The present invention includes intelligent temperature field assembly 200,
Be separately provided on the front panel 208 of intelligent temperature field assembly with temperature switch output interface, 4~20mA output interfaces and
Temperature switch input interface 201,4~20mA input interfaces 203 and the Pt100 input interfaces of Pt100 output interfaces electrical connection
204；
The standard temperature for being electrically connected standard thermometer 206 is additionally provided on the front panel 208 of the intelligent temperature field assembly
Degree meter input interface 205；What the normal temperature that standard thermometer is intended for oil groove measured, it can be straight by standard thermometer
Whether the temperature value for connecing judgement oil surface thermostat is correct；The precision of standard thermometer is less than or equal to 0.05 DEG C；
The intelligent temperature field assembly 200 includes master controller 218, and the master controller 218 is by intelligent temperature field assembly 200
Enclosure interior is electrically connected the temperature switch input interface, 4~20mA input interfaces, Pt100 input interfaces and standard thermometer
Input interface；The intelligent temperature field assembly also includes the oil groove for placing the standard thermometer and the thermometer thermometer bulb
220；The intelligent temperature field assembly also includes the semiconductor heating cooling piece 225 for the oil groove that heats and freeze, and described half
Conductor heating cooling piece is uniformly attached to the outer surface of the left and right sides of the oil groove 220；The left and right sides appearance of the oil groove
Heat-conducting plate 212 is installed on face respectively, it (is respectively left cooling fin 217 and right cooling fin that cooling fin is evenly equipped on heat-conducting plate
211)；Thermal insulation board 221 is provided on the surface of the front and rear sides of the oil groove；Semiconductor heating cooling piece is the prior art, this
In order to realize relatively reliable heating and refrigeration, the outer surface of semiconductor heating cooling piece is laid with radiator structure, Ke Yi for invention
In the case that inner surface freezes, outer surface is allowed preferably to radiate and so that the cryogenic temperature of inner surface is lower, cooling rate higher；
The bottom surface of the housing of intelligent temperature field assembly is mount holder 215, and mount holder corresponds to the cooling fin of the left and right sides
The radiator fan mounting hole 216 offered for fixing radiator fan 223 of position, radiator fan are mounted on cooling fin and described
Between mount holder upper surface；Setting radiator fan can further increase the heat dissipation effect of fin section, promote semiconductor
Heat the refrigeration effect and speed of cooling piece.
The master controller is connected with the semiconductor heating cooling piece and radiator fan control.Master controller is as collection
Middle control, may be used embedded ARM processor, the control of control, heating for fan and reading oil surface thermostat
Circuit structure may be used the prior art processing.
The present invention is when measuring, and due to having comprehensive input interface, can check oil surface thermostat acquisition at the scene
The temperature signal of transformer oil, while three kinds of numerical value differences are observed, to determine whether the normal (calibrating with the present invention at the first time
The thinking of method is identical).
A kind of preferred embodiment as verification system disclosed by the invention：Filled with transformer oil, institute in the oil groove
It states oil groove bottom and magnetic oil float component 222 for stirring transformer oil is installed, the magnetic oil float component includes mixing control mould
Block 2201, magnetic core 2203, magnet exciting coil 2202 and the magnetic oil float 224 being placed in the oil groove, the magnetic oil float to be cylindrical or
The permanent magnet of person's rice font；The bottom of magnetic core is connected for cross, and there are four magnetic in 90 degree of extensions of criss-cross end bending
Column 2231；The magnet exciting coil is equal with magnetic pole quantity, and magnet exciting coil is wrapped in the magnetic pole of magnetic core, and magnet exciting coil is stirred with described
Mix control module connection；The mixing control module is integrated in the master controller 218.In the present embodiment, pass through magnetic oil float
Component realizes the stirring to transformer oil in oil groove, which is based on magnetic agitation principle, does not need to wear stirring for oil groove
Axis is mixed, this greatly simplifies oil groove internal structure, while the measurement space being also effectively ensured in oil groove；When oil groove heats,
The direct current of direction and mechanical periodicity by mixing control module for magnet exciting coil is provided, is formed above magnet exciting coil and magnetic core
One rotating excitation field (approximate with permanent magnetic step motor rotary principle)；The rotating excitation field is with above moving winding and magnetic core and be placed in
Magnetic oil float rotation in oil groove, the cylindrical type and rice font structure of magnetic oil float are conducive to reaching for stirring, and realization is sufficiently stirred, and is made
The oil temperature obtained in oil groove is evenly distributed, one standard of formation, reliable thermal field.
A kind of preferred embodiment as verification system disclosed by the invention：It is provided with what is transmitted for heat in the oil groove
Heat-conducting block 300, heat-conducting block are to offer to insert from top to bottom with the matched cylindrical structure of oil groove inner surface configuration, heat-conducting block
Enter the blind hole of thermometer thermometer bulb and standard thermometer.The design of heat-conducting block is it is contemplated that on the one hand can substitute oil to heat-conducting block
Fluid in slot realizes quick detection；This is determined according to field conditions and power supply pressure, once it can only carry out quick
It measures, heat-conducting block is placed in oil groove, transformer oil is not filled in oil groove, heat-conducting block is efficient heat transfer material, can pass through oil groove
Heating and the quick heat conduction of refrigeration, entire detection process is allowed to become quick；
A kind of preferred embodiment as verification system disclosed by the invention：It is provided with what is transmitted for heat in the oil groove
Heat-conducting block 300, heat-conducting block are to offer to insert from top to bottom with the matched cylindrical structure of oil groove inner surface configuration, heat-conducting block
Enter the jack 301 of thermometer thermometer bulb and standard thermometer；The jack is through-hole；The magnetic oil float is arranged on the heat-conducting block bottom
Between face and oil groove bottom surface.The present embodiment can fill transformer oil using through-hole structure, so so that oil and heat-conducting block
It acts on, the simulation of the reliable environment of existing oil, and energy raising efficiency, is had the gap because transformer oil can fill simultaneously so that
Heat conduction is uniform, and transformer oil also can more really simulate the working environment of the thermometer thermometer bulb of oil surface thermostat；In the present embodiment
Also heat-conducting block is fixed as a reliable stent for the thermometer thermometer bulb and standard thermometer for being inserted into through-hole so that surveys
It is reliable to try procedure structure, without manually helping；When the hole of heat-conducting block is through-hole, heat-conducting block bottom should be with oil groove bottom at this time
Apart from certain space, the magnetic oil float of magnetic oil float component is allowed reliably to suspend in inside, realizes the function of magnetic oil float stirring；This is
A kind of more outstanding embodiment.
A kind of preferred embodiment as verification system disclosed by the invention：The quantity of the semiconductor heating cooling piece is
Four；The left and right sides of oil groove attaches two respectively；It is circular cross section inside oil groove, the outer surface of the left and right sides of oil groove is set
It is calculated as flat shape；The rear portion of the housing of the intelligent temperature field assembly is rear shell 209, and the front panel of housing is close to bottom position
Display panel 207, display panel are ramp structure, and the top of housing sets the head cover 219 for fixing oil groove；The housing
Bottom four corners set four footing 210；The master controller is arranged in the space between thermal insulation board 221 and rear shell 209, heat-insulated
Space between plate and front panel is provided with display screen 213 and drive circuit board 214, the position of display screen and the display panel
It is corresponding with angle.The present embodiment improves the shape of the outer surface of oil groove so that the attaching heating system of semiconductor heating cooling piece
Cold effect is more preferable, not only contributes to fixed (being fixed by heat-conducting silicone grease), additionally it is possible to greater area of to conduct heat and pass cold；Semiconductor
The principle for heating cooling piece is the prior art, and the present invention on the fit structure of semiconductor heating cooling piece mainly with creating
The design of new property so that intelligent temperature field assembly heats the efficient of refrigeration, and effect is reliable.
A kind of preferred embodiment as verification system disclosed by the invention：The radiator fan installed on the mount holder
223 quantity is eight；And mount holder opens up platform of the position of radiator fan mounting hole 216 for protrusion.Mount holder
Structure, the air intake vent that radiator fan is provided by the platform of protrusion (is air inlet below radiator fan, top is that direction radiates
Piece blowing air outlet) reliable space, improving radiating effect.
A kind of preferred embodiment as verification system disclosed by the invention：The outer surface of the oil groove and thermal insulation board 221,
Insulating foam is filled between heat-conducting plate；The insulating foam is polyurethane foam filler material.The present embodiment passes through insulating foam
So that the cooling and warming temperature of oil groove is reliably preserved so that temperature is stablized, more energy saving；Polyurethane foam filler material passes through
Our on-the-spot test is crossed, using the polyurethane foams (including black material and white material) or the poly- ammonia of all-victorious brand into health product board
Ester foam filling agent can reach very outstanding energy-saving heat preserving (cold insulation thermal protection) effect.
A kind of preferred embodiment as verification system disclosed by the invention：The temperature switch output of the oil surface thermostat
Interface exports four-way switch signal, corresponding, and the switch instruction of four different locations is set on the dial plate of the oil surface thermostat
Node；The enclosure interior is provided with the accumulator for power supply；Testing jig, the thermometer are provided at the top of the housing
The temperature-sensitive part and probe segment of temperature packet and standard thermometer go deep into oil groove, and rest part is fixed on the testing jig.Four
Path switching signal is the instruction point of 4 triangles on oil surface thermostat dial plate, is respectively used to touch when reaching different temperature
Switching signal is sent out, the control process lost with this alarm, locking etc. to be realized to help avoid；Therefore for four-way switch signal
Detection it is also extremely important；The present invention is by the way that the temperature detect switch (TDS) input interface of temperature detect switch (TDS) signal and intelligent temperature field assembly is connected
Connect so that master controller can read temperature detect switch (TDS) signal, at this time on recording meter panel reach temperature detect switch (TDS) signal numerical value and
The numerical value of standard thermometer at this time can intuitively proving temperature switching signal it is whether accurate.
A kind of preferred embodiment as verification system disclosed by the invention：The aperture of the oil groove is 63~64mm；Institute
The heating refrigeration section for stating semiconductor heating cooling piece is -10 DEG C~135 DEG C；The standard thermometer is in the position far from probe
The corner structure of 90 degree of setting；The oil groove is built-in with that the temperature of semiconductor heating cooling piece heating cryogenic temperature is controlled to pass
Sensor, the temperature sensor are connect with the master controller；The standard thermometer input interface be serial ports, the standard temperature
Degree is calculated as the digital thermometer for including data storage.Temperature sensor is built-in heat detector, can realize oil groove heating
PID control so that control heating process of refrigerastion more precisely and automates.
The invention also discloses the oil surface thermostat calibration method based on intelligent thermal field, using any above-mentioned verification system
Perform following steps：
(1) 3W quickly judges；By 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and intelligent thermal field group
4~20mA input interfaces of part, the electrical connection of Pt100 input interfaces；4~20mA signals numerical value, Pt100 signals numerical value and pasta temperature
When the display numerical value of control device pointer is consistent, then judge that oil surface thermostat pointer is shown normally；As 4~20mA signals numerical value, Pt100
When signal numerical value shows that numerical value is inconsistent with oil surface thermostat pointer, then following oil surface thermostat pointer verification step is performed；
Thermometer thermometer bulb, the standard thermometer of oil surface thermostat is are placed in by the oil surface thermostat pointer verification step
In oil groove, 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and 4~20mA of intelligent temperature field assembly are inputted
Interface, the electrical connection of Pt100 input interfaces；After heating oil tank with the numerical value of standard thermometer judge respectively 4~20mA signals numerical value,
Pt100 signals numerical value and oil surface thermostat pointer show whether numerical value is accurate.
It is obvious that calibration method disclosed by the invention allows to first judging oil surface thermostat at the scene at the first time
Whether dial plate numerical value is correct, once the item that the incorrect power failure of application for execution again of incorrect or remaining signal is overhauled, such as
Fruit is correct, can not have to calibrating and safeguard, the time is greatly saved, avoids power failure.
It should be noted that after oil surface thermostat is installed and used, Pt100 output interfaces, 4~20mA output interfaces and
Remote transfer signal output interface be connect at the scene connection point terminal row on, the present invention 3W test process only need it is of short duration into
Power failure or non-power failure operation on row connecting terminal block；This is flexibly carried out according to field conditions, and 3W decision processes are opposite
In the existing judgement of dismounting oil surface thermostat, more succinctly, unnecessary dismounting and power failure can be avoided as far as possible.
A kind of preferred embodiment as calibration method disclosed by the invention：Also include the temperature switch school of oil surface thermostat
Accurate step：
S1：The temperature switch output interface of oil surface thermostat and the temperature switch input interface of intelligent temperature field assembly are electrically connected
It connects；
S2：Set the heating temperature section of oil groove；
S3：The different location switch letter that after main controller controls heating, master controller is read, record and displays temperature switch
Number numerical value, it is whether accurate according to result temperature switch signal of making an inventory.
The embodiment of this calibration method so that temperature switch signal verification process can be automatically performed, and mitigated manually, also kept away
The interference of human factor is exempted from, efficiency greatly promotes.
The preferred embodiment for the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode, within the knowledge of a person skilled in the art, can also be under the premise of present inventive concept not be departed from
It makes a variety of changes, these variations are related to the relevant technologies well-known to those skilled in the art, these both fall within patent of the present invention
Protection domain.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (10)
1. the oil surface thermostat for transformer verification system based on intelligent thermal field, the oil surface thermostat is exported comprising temperature switch
Interface, thermometer thermometer bulb, 4~20mA output interfaces and Pt100 output interfaces；It is characterized in that：Include intelligent temperature field assembly, intelligence
It is separately provided on the front panel of energy thermal field component defeated with temperature switch output interface, 4~20mA output interfaces and Pt100
Temperature switch input interface, 4~20mA input interfaces and the Pt100 input interfaces of outgoing interface electrical connection；
It is additionally provided on the front panel of the intelligent temperature field assembly and is connect for being electrically connected the standard thermometer input of standard thermometer
Mouthful；
The intelligent temperature field assembly includes master controller, and the master controller is electrically connected institute by the enclosure interior of intelligent temperature field assembly
State temperature switch input interface, 4~20mA input interfaces, Pt100 input interfaces and standard thermometer input interface；The intelligence
Thermal field component also includes the oil groove for placing the standard thermometer and the thermometer thermometer bulb；The intelligent temperature field assembly is also
Comprising the semiconductor heating cooling piece for the oil groove that heats and freeze, the semiconductor heating cooling piece is uniformly attached to institute
State the outer surface of the left and right sides of oil groove；It is installed with heat-conducting plate, heat conduction respectively on the left and right sides outer surface of the oil groove
Cooling fin is evenly equipped on plate；Thermal insulation board is provided on the surface of the front and rear sides of the oil groove；
The bottom surface of the housing of intelligent temperature field assembly is mount holder, and mount holder corresponds to opening for the position of the cooling fin of the left and right sides
Equipped with for fixing the radiator fan mounting hole of radiator fan, radiator fan is mounted on cooling fin and the mount holder upper surface
Between；
The master controller is connected with the semiconductor heating cooling piece and radiator fan control.
2. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
It states filled with transformer oil in oil groove, the oil groove bottom is equipped with the magnetic oil float component for stirring transformer oil, the magnetic
Oil float component includes mixing control module, magnetic core, magnet exciting coil and the magnetic oil float being placed in the oil groove, and the magnetic oil float is circle
The permanent magnet of cylindricality or rice font；The bottom of magnetic core is connected for cross, and bends 90 degree in criss-cross end and be extended with
Four magnetic poles；The magnet exciting coil is equal with magnetic pole quantity, and magnet exciting coil is wrapped in the magnetic pole of magnetic core, magnet exciting coil with it is described
Mixing control module connects；The mixing control module is integrated in the master controller.
3. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
State be provided in oil groove for heat transmit heat-conducting block, heat-conducting block be with the matched cylindrical structure of oil groove inner surface configuration, lead
Heat block offers the blind hole for being inserted into thermometer thermometer bulb and standard thermometer from top to bottom.
4. the oil surface thermostat for transformer verification system based on intelligent thermal field as claimed in claim 2, it is characterised in that：Institute
State be provided in oil groove for heat transmit heat-conducting block, heat-conducting block be with the matched cylindrical structure of oil groove inner surface configuration, lead
Heat block offers the jack for being inserted into thermometer thermometer bulb and standard thermometer from top to bottom；The jack is through-hole；The magnetic
Oil float is arranged between the heat-conducting block bottom surface and oil groove bottom surface.
5. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
The quantity for stating semiconductor heating cooling piece is four；The left and right sides of oil groove attaches two respectively；It is rounded cross section inside oil groove
Face, the outer surface of the left and right sides of oil groove are designed as flat shape；The rear portion of the housing of the intelligent temperature field assembly be rear shell, shell
The front panel of body is display panel close to bottom position, and display panel is ramp structure, and the top setting of housing is for fixing oil
The head cover of slot；The bottom four corners of the housing set four footing；The master controller is arranged between thermal insulation board and rear shell
In space, the space between thermal insulation board and front panel is provided with display screen and drive circuit board, display screen and the display panel
Position and angle correspond to.
6. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
The quantity for stating the radiator fan installed on mount holder is eight；And it is convex that mount holder, which opens up the position of radiator fan mounting hole,
The platform risen；Insulating foam is filled between the outer surface of the oil groove and thermal insulation board, heat-conducting plate；The insulating foam is poly- ammonia
The foam-filled material of ester.
7. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
The temperature switch output interface output four-way switch signal of oil surface thermostat is stated, it is corresponding, on the dial plate of the oil surface thermostat
The switch instruction node of four different locations of setting；The enclosure interior is provided with the accumulator for power supply；The housing
Top is provided with testing jig, and the temperature-sensitive part and probe segment of the thermometer temperature packet and standard thermometer go deep into oil groove,
Remaining part point is fixed on the testing jig.
8. the oil surface thermostat for transformer verification system based on intelligent thermal field as described in claim 1, it is characterised in that：Institute
The aperture for stating oil groove is 63~64mm；The heating refrigeration section of the semiconductor heating cooling piece is -10 DEG C~135 DEG C；It is described
Standard thermometer sets 90 degree of corner structure in the position far from probe；The oil groove is built-in with to control semiconductor heating
Cooling piece heats the temperature sensor of cryogenic temperature, and the temperature sensor is connect with the master controller；The normal temperature
Meter input interface is serial ports, and the normal temperature is calculated as the digital thermometer for including data storage.
9. the oil surface thermostat calibration method based on intelligent thermal field, is held using the verification system as described in claim 1~8 is any
Row following steps：
(1) 3W quickly judges；By 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and intelligent temperature field assembly
4~20mA input interfaces, the electrical connection of Pt100 input interfaces；4~20mA signals numerical value, Pt100 signals numerical value and oil surface thermostat
When the display numerical value of pointer is consistent, then judge that oil surface thermostat pointer is shown normally；When 4~20mA signals numerical value, Pt100 signals
When numerical value shows that numerical value is inconsistent with oil surface thermostat pointer, then following oil surface thermostat pointer verification step is performed；
The oil surface thermostat pointer verification step is that thermometer thermometer bulb, the standard thermometer of oil surface thermostat are placed in oil groove
It is interior, 4~20mA output interfaces of oil surface thermostat, Pt100 output interfaces and 4~20mA inputs of intelligent temperature field assembly are connect
Mouth, the electrical connection of Pt100 input interfaces；After heating oil tank with the numerical value of standard thermometer judge respectively 4~20mA signals numerical value,
Pt100 signals numerical value and oil surface thermostat pointer show whether numerical value is accurate.
10. the oil surface thermostat for transformer calibration method based on intelligent thermal field as claimed in claim 9, it is characterised in that：
The step of also temperature switch comprising oil surface thermostat is calibrated：
S1：The temperature switch output interface of oil surface thermostat is electrically connected with the temperature switch input interface of intelligent temperature field assembly；
S2：Set the heating temperature section of oil groove；
S3：After main controller controls heating, the different location switching signal of master controller reading, record and displays temperature switch
Whether numerical value is accurate according to result temperature switch signal of making an inventory.
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| CN201711461928.XA CN108196526B (en) | 2017-12-28 | 2017-12-28 | Intelligent temperature field-based oil surface temperature controller verification system and method for transformer |
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| CN201711461928.XA CN108196526B (en) | 2017-12-28 | 2017-12-28 | Intelligent temperature field-based oil surface temperature controller verification system and method for transformer |
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| CN108196526B CN108196526B (en) | 2020-06-26 |
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| CN111930104A (en) * | 2020-08-18 | 2020-11-13 | 云南电网有限责任公司德宏供电局 | Portable temperature controller checking system based on oil groove |
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| CN108196526B (en) | 2020-06-26 |
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