CN206432134U - Current transformer with temperature measuring equipment - Google Patents
Current transformer with temperature measuring equipment Download PDFInfo
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- CN206432134U CN206432134U CN201720100771.7U CN201720100771U CN206432134U CN 206432134 U CN206432134 U CN 206432134U CN 201720100771 U CN201720100771 U CN 201720100771U CN 206432134 U CN206432134 U CN 206432134U
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- current transformer
- measuring equipment
- temperature measuring
- temperature
- temperature sensor
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Abstract
The utility model is related to a kind of current transformer with temperature measuring equipment, including housing, iron core, copper coil and binding post, set in the housing cored, copper coil is wound with the iron core, the housing is structure as a whole with iron core, the core interior is provided through the through hole of iron core and housing, and the through-hole surfaces are provided with temperature sensor.The utility model has the current transformer of temperature measuring equipment, and thermal resistance temperature sensor is directly cast in current transformer casing, current transformer is united two into one with temperature measuring equipment, integrated degree is greatly improved.Current transformer can both export secondary current, can enrich the function of current transformer with output temperature signal again；Directly temperature sensor is directly cast in current transformer casing, the installation part of temperature sensor is eliminated, and temperature sensor probe is directly facing end, from structure with functionally having higher reliability.
Description
Technical field
The utility model is related to a kind of current transformer, specifically, is that to be related to a kind of electric current with temperature measuring equipment mutual
Sensor.
Background technology
Current transformer makes the secondary devices such as measuring instrumentss in power system, relay protection obtain primary circuit current information
Sensor, make electrical equipment important in power system, carry isolation between high and low pressure system and high pressure amount to low pressure
Measure the function of conversion.Whether working properly, the equipment such as safety and protection, measurement to power system of current transformer in itself
Normal work have extremely important meaning.
Current transformer principle is according to electromagnetic induction principle.Current transformer is the iron core and winding group by closing
Into.Its first winding number of turn seldom, is gone here and there in the circuit for the electric current for needing to measure, therefore it often has whole electric currents of circuit
Flow through, secondary winding turn ratio is more, is serially connected in measuring instrumentss and protective loop, current transformer operationally, its two
Secondary side loop is to close all the time, therefore measuring instrumentss and the impedance very little of protective loop series coil, the work of current transformer
Make state close to short circuit.Current transformer is that primary side high current is converted into secondary side low current to use, and secondary side can not
Open circuit.
Current transformer works according to electromagnetic induction principle, the wherein outlet casing tube of ring main unit as first winding,
Iron core is used as secondary winding with copper cash.No-load voltage ratio K=I1/I2, I1 are primary current, and I2 is secondary current., can be with after no-load voltage ratio is determined
Obtain I2.
Thermal resistance sensor is that the characteristic varied with temperature using conductor resistance is made, when going out sleeve pipe and cable head temperature
When outlet changes, now the platinum filament of thermal resistance sensor can produce resistance variations by heat transfer, and resistance variations signal can be through
Signal adapter is changed into electric signal output and gone to LCD display device.
LCD display device can show secondary current value, sleeve pipe and cable head temperature value, and provide warning function and communication
Function.
Prior art, ring main unit end temperature measuring equipment is a separate modular, end temperature measuring equipment and Current Mutual Inductance
Device is two separate devices, is installed after current transformer, it is necessary to additionally mounted end temperature measuring equipment；Due to looped network
Space is limited in cabinet, therefore ring main unit end test device installs complicated, and the installation of end test device is extremely difficult to set
Meter requires that end test device is more stable poor, causes ring main unit not run well.
Utility model content
For above-mentioned deficiency of the prior art, the utility model provides one kind and directly pours thermal resistance temperature sensor
The current transformer with temperature measuring equipment in current transformer casing.
Technical solution adopted in the utility model is：
A kind of current transformer with temperature measuring equipment, including housing, iron core, copper coil and binding post, the housing
It is interior to set cored, copper coil is wound with the iron core, the housing is structure as a whole with iron core, the core interior is set
There is the through hole through iron core and housing, the through-hole surfaces are provided with temperature sensor.
The iron core be ring-shaped closed multilayer silicon steel sheet group into.
The temperature sensor is thermal resistance sensor.
The shell material is poured by APG automatic pressure gel technologies for epoxy resin and formed.
The diameter of section specification of the copper coil be 2mm, used as secondary coil, its number of turns by current transformer change
Than determining.
The thermal resistance temperature sensor selects model pt100 platinum sensor.
The temperature sensor is cast in housing, exposes 3mm sensor probe, for measuring sleeve pipe and end
Temperature；Temperature sensor is connected with lead-out terminal.
Resistance signal output end of the binding post respectively with copper coil end and temperature sensor is connected.
The beneficial effect of the utility model compared with the prior art：
The utility model has the current transformer of temperature measuring equipment, thermal resistance temperature sensor is directly cast in electric current mutual
In sensor shell, current transformer is united two into one with temperature measuring equipment, integrated degree is greatly improved.Current transformer both may be used
To export secondary current, the function of current transformer can be enriched with output temperature signal again.
The utility model has the current transformer of temperature measuring equipment, due to being that temperature sensor is directly directly cast in into electricity
In current transformer shell, the installation part of temperature sensor is eliminated, and temperature sensor probe is directly facing end, from knot
Structure is with functionally having higher reliability.
The utility model has the current transformer of temperature measuring equipment, the manufacture of reduction current transformer and installation cost, without
Ring main unit cable head temperature temperature measuring equipment is individually purchased again, with higher cost performance.
The utility model has the current transformer of temperature measuring equipment, the state of temperature of current transformer can be carried out online
Monitoring in real time, if measuring the rise of transformer temperature, can export caution signal, this signal and ring main unit breaker open operation coil
It is connected, can directly carries out trip operation, the contingency occurrence probability of reduction.
Brief description of the drawings
Fig. 1 is the structural representation for the current transformer that the utility model has temperature measuring equipment；
Fig. 2 is Fig. 1 A-A cross section structure diagrams.
Critical piece symbol description in accompanying drawing：
In figure：
1st, housing 2, binding post
3rd, temperature sensor 4, through hole
5th, iron core 6, copper coil.
Embodiment
Referring to the drawings and the utility model is described in detail embodiment：
Knowable to accompanying drawing 1-2, a kind of current transformer with temperature measuring equipment, including housing 1, iron core, copper coil and wiring
Set in terminal 2, the housing and copper coil 6 is wound with cored 5, the iron core 5, the housing 1 is integrated knot with iron core 5
Structure, the iron core 5 is internally provided with the through hole 4 through iron core and housing, and the surface of through hole 4 is provided with temperature sensor 3.
The iron core 5 be ring-shaped closed multilayer silicon steel sheet group into.
The temperature sensor 3 is thermal resistance sensor.
The shell material is poured by APG automatic pressure gel technologies for epoxy resin and formed.
The diameter of section specification of the copper coil be 2mm, used as secondary coil, its number of turns by current transformer change
Than determining.Iron core constitutes secondary winding with copper coil.
The thermal resistance temperature sensor selects model pt100 platinum sensor.At 0 degree Celsius, resistance is
100 Europe, are 138.5 Europe at 100 degrees Celsius, with good linear convergent rate.
The temperature sensor is cast in housing, exposes 3mm sensor probe, for measuring sleeve pipe and end
Temperature；Temperature sensor is connected with lead-out terminal.
Resistance signal output end of the binding post respectively with copper coil end and temperature sensor is connected.Copper coil
End exports secondary current according to current transformer ratio.
The beneficial effect of the utility model compared with the prior art：
The utility model has the current transformer of temperature measuring equipment, thermal resistance temperature sensor is directly cast in electric current mutual
In sensor shell, current transformer is united two into one with temperature measuring equipment, integrated degree is greatly improved.Current transformer both may be used
To export secondary current, the function of current transformer can be enriched with output temperature signal again.
The utility model has the current transformer of temperature measuring equipment, due to being that temperature sensor is directly directly cast in into electricity
In current transformer shell, the installation part of temperature sensor is eliminated, and temperature sensor probe is directly facing end, from knot
Structure is with functionally having higher reliability.
The utility model has the current transformer of temperature measuring equipment, the manufacture of reduction current transformer and installation cost, without
Ring main unit cable head temperature temperature measuring equipment is individually purchased again, with higher cost performance.
The utility model has the current transformer of temperature measuring equipment, the state of temperature of current transformer can be carried out online
Monitoring in real time, if measuring the rise of transformer temperature, can export caution signal, this signal and ring main unit breaker open operation coil
It is connected, can directly carries out trip operation, the contingency occurrence probability of reduction.
It is described above, only it is preferred embodiment of the present utility model, any not is made to structure of the present utility model
Formal limitation.It is every any simple modification made according to technical spirit of the present utility model to above example, equivalent
Change and modification, are belonged in the range of the technical solution of the utility model.
Claims (8)
1. in a kind of current transformer with temperature measuring equipment, including housing, iron core, copper coil and binding post, the housing
Set cored, copper coil is wound with the iron core, the housing is structure as a whole with iron core, and the core interior is provided with
Through iron core and the through hole of housing, it is characterised in that the through-hole surfaces are provided with temperature sensor.
2. there is the current transformer of temperature measuring equipment according to claim 1, it is characterised in that：The iron core closes for annular
The multilayer silicon steel sheet group of conjunction into.
3. there is the current transformer of temperature measuring equipment according to claim 1, it is characterised in that：
The temperature sensor is thermal resistance sensor.
4. there is the current transformer of temperature measuring equipment according to claim 1, it is characterised in that：
The shell material is poured by APG automatic pressure gel technologies for epoxy resin and formed.
5. there is the current transformer of temperature measuring equipment according to claim 1, it is characterised in that：
The diameter of section specification of the copper coil is 2mm, is used as secondary coil, its number of turns is determined by the no-load voltage ratio of current transformer
It is fixed.
6. there is the current transformer of temperature measuring equipment according to claim 3, it is characterised in that：
The thermal resistance temperature sensor selects model pt100 platinum sensor.
7. there is the current transformer of temperature measuring equipment according to claim 1, it is characterised in that：
The temperature sensor is cast in housing, exposes 3mm sensor probe, the temperature for measuring sleeve pipe and end
Degree；Temperature sensor is connected with lead-out terminal.
8. there is the current transformer of temperature measuring equipment according to claim 3, it is characterised in that：
Resistance signal output end of the binding post respectively with copper coil end and temperature sensor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720100771.7U CN206432134U (en) | 2017-01-24 | 2017-01-24 | Current transformer with temperature measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720100771.7U CN206432134U (en) | 2017-01-24 | 2017-01-24 | Current transformer with temperature measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206432134U true CN206432134U (en) | 2017-08-22 |
Family
ID=59592120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720100771.7U Active CN206432134U (en) | 2017-01-24 | 2017-01-24 | Current transformer with temperature measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206432134U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN113568335A (en) * | 2021-06-28 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Analog integration and self-calibration system and method for Rogowski coil current transformer |
-
2017
- 2017-01-24 CN CN201720100771.7U patent/CN206432134U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN113568335A (en) * | 2021-06-28 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Analog integration and self-calibration system and method for Rogowski coil current transformer |
| CN113568335B (en) * | 2021-06-28 | 2024-01-30 | 国网天津市电力公司电力科学研究院 | Analog integration and self-calibration system and method for rogowski coil current transformer |
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