CN207487838U - Transformer temperature control device temperature transmitter - Google Patents
Transformer temperature control device temperature transmitter Download PDFInfo
- Publication number
- CN207487838U CN207487838U CN201721661811.1U CN201721661811U CN207487838U CN 207487838 U CN207487838 U CN 207487838U CN 201721661811 U CN201721661811 U CN 201721661811U CN 207487838 U CN207487838 U CN 207487838U
- Authority
- CN
- China
- Prior art keywords
- discharge tube
- control device
- inductance coil
- housing
- temperature control
- 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
Links
Landscapes
- Protection Of Transformers (AREA)
Abstract
The utility model discloses a kind of transformer temperature control device temperature transmitter, there is housing, housing is equipped with display screen, regulating key, signal input part and signal output end, the EMC circuits to connect with signal input part are equipped in housing, the output of EMC circuits connects with CPU, and the output of CPU is connected by lightning prevention circuit with signal output end；The lightning prevention circuit is equipped with discharge tube, and one end of discharge tube connects with inductance coil L1, and the other end of discharge tube connects with inductance coil L2, and backward dioded D1 and positive diode D2 are connected between the inductance coil L1 and inductance coil L2.Independently of except transformer temperature control device, convenient for safeguard, dependable performance.
Description
Technical field
The utility model is related to a kind of temperature transmitter, it is especially a kind of independently of except transformer temperature control device, be convenient for
It safeguards, the transformer temperature control device temperature transmitter of dependable performance.
Background technology
At present, transformer temperature control device is equipped with temperature sensor, and temperature sensor is by measured fundamental physical quantity（Electricity
Pressure, electric current or resistance PT-100）Linear transformation is pressed into corresponding signal by temperature transmitter（0 ~ 5V voltages, 0 ~ 10V voltages, 4
~ 20mA electric currents or RS485）Afterwards, the output extremely units such as display, control.It is needed during use by the temperature in transformer temperature control device
Sensor connects with oil tank of transformer or winding.There are the following problems for existing temperature transmitter：
1. being embedded in transformer temperature control device housing, opening temperature control device is needed to repair, more if breaking down
It changes, because temperature control device is difficult to dismantle, therefore the repair safe distance of operating instruction limitation can not be met, transformer can only be used to power off
Repair brings various adverse effects to production, life etc.；
2. can only substantially meet a kind of signal transformation in sensor voltage, electric current or resistance PT-100, basis is needed
Different temperatures sensor is replaced, installation maintenance trouble；
3. often there is the problems such as sign mutation, loss, larger deviation during the operation of scene.
Invention content
The utility model is to solve the above-mentioned technical problem present in the prior art, provides one kind independently of transformer
Except temperature control device, convenient for maintenance, the transformer temperature control device temperature transmitter of dependable performance.
The technical solution of the utility model is：A kind of transformer temperature control device temperature transmitter, there is housing, shell
Body is equipped with display screen, regulating key, signal input part and signal output end, is equipped with what is connected with signal input part in housing
EMC circuits, the output of EMC circuits connect with CPU, and the output of CPU is connected by lightning prevention circuit with signal output end；It is described anti-
Thunder strike circuit is equipped with discharge tube, and one end of discharge tube connects with inductance coil L1, the other end and the inductance coil L2 phases of discharge tube
It connects, backward dioded D1 and positive diode D2 is connected between the inductance coil L1 and inductance coil L2.
The utility model compared with prior art, has the following advantages that：
1. except transformer temperature control device, temperature control device need not be opened when a failure occurs and is repaired, more
It changes, the input, output end of the utility model need to only be disconnected with the equipment being connected, you can in the repair peace of operating instruction limitation
Full distance repairs outside, avoids repairing because of transformer power-off and brings various adverse effects to production, life etc.；
Voltage, electric current or resistance PT-100 in range ability can be changed into corresponding 0 ~ 5V electricity by the CPU set by 2.
Pressure, 0 ~ 10V, 4 ~ 20mA of voltage electric currents or RS485 carry out selection switching by regulating key according to different temperatures sensor, keep away
Exempt from because replacing installation maintenance trouble caused by temperature transmitter；
There is signal when scene being avoided to run and dash forward in EMC circuits, discharge tube, inductance coil and diode set by 3.
Become, lose, deviation it is larger, lightning stroke the problems such as, it is ensured that runnability is reliable.
Description of the drawings
Fig. 1 is the utility model embodiment external structure schematic diagram.
Fig. 2 is the utility model embodiment schematic block circuit diagram.
Fig. 3 is the specific line map of the utility model embodiment lightning prevention circuit.
Specific embodiment
The utility model embodiment is as shown in Figure 1, 2, 3：There is housing 1, housing 1 is equipped with display screen 2, regulating key 3, letter
Number input terminal 4（6 channels）And signal output end 5, the EMC circuits to connect with signal input part 4, EMC circuits are equipped in housing 1
Output and CPU（Model 32F100）Connect, the output of CPU is connected by lightning prevention circuit with signal output end 5；The lightning protection
Circuit is hit equipped with discharge tube（Model 3R090）, one end of discharge tube connects with inductance coil L1, the other end and inductance of discharge tube
Coil L2 connects, and backward dioded D1 and positive diode D2 are connected between the inductance coil L1 and inductance coil L2.
Operation principle：
6 channel signal input terminals 4 are connected with each temperature sensor output of transformer temperature control device during use, signal is defeated
Outlet 5 connects with backstage TT＆C system, can select the signal of corresponding output according to temperature sensor by regulating key 3.
The signal of temperature sensor input the processing such as is filtered by signal input part 4 into EMC circuits, and treated
Signal is calculated again by CPU, exports corresponding 0 ~ 5V voltages, 4 ~ 20mA electric currents, 0 ~ 10V voltage signals or RS485, CPU
Output signal is exported by discharge tube, inductance coil L1, L2, diode D1, D2, signal output end 5.
Discharge tube resistance value is very big under normal operating voltage, is equivalent to state of insulation, can be when there is thunder and lightning generation
Very high voltage is generated on discharge tube, discharge tube can be in nanosecond（ns）Grade is breakdown in low value, is equivalent to short-circuit condition, lightning current
It is grounded by lightning protection discharge tube and flows into the earth, the voltage on power cord is made to control in safe range, so as to ensure temperature
The operational safety of transmitter, and then ensure system normal signal transmission；And after the conducting voltage higher than lightning protection discharge tube cancels
High-impedance state is restored again（Discharge tube can be restored after the state of hitting）.Set inductance coil and diode are in electric current or electricity
Pressure change dramatically is that high-impedance state is presented, and temperature transmitter can be further prevented to be damaged due to overcurrent, overvoltage, while can also be avoided existing
There is the problems such as sign mutation, loss, larger deviation during the operation of field.
Claims (1)
1. a kind of transformer temperature control device temperature transmitter, it is characterised in that：There is housing（1）, housing（1）It is equipped with display screen
（2）, regulating key（3）, signal input part（4）And signal output end（5）, in housing（1）It is inside equipped with and signal input part（4）Phase
The EMC circuits connect, the output of EMC circuits connect with CPU, and the output of CPU passes through lightning prevention circuit and signal output end（5）Phase
It connects；The lightning prevention circuit is equipped with discharge tube, and one end of discharge tube connects with inductance coil L1, the other end and inductance of discharge tube
Coil L2 connects, and backward dioded D1 and positive diode D2 are connected between the inductance coil L1 and inductance coil L2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661811.1U CN207487838U (en) | 2017-12-04 | 2017-12-04 | Transformer temperature control device temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661811.1U CN207487838U (en) | 2017-12-04 | 2017-12-04 | Transformer temperature control device temperature transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207487838U true CN207487838U (en) | 2018-06-12 |
Family
ID=62457589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721661811.1U Expired - Fee Related CN207487838U (en) | 2017-12-04 | 2017-12-04 | Transformer temperature control device temperature transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207487838U (en) |
-
2017
- 2017-12-04 CN CN201721661811.1U patent/CN207487838U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11264794B2 (en) | Series compensator and control method | |
| CN103618286B (en) | Transient over-voltage protection circuit | |
| CN104617571B (en) | A kind of electronic electric equipment over-voltage and over-current protector | |
| CN103606889A (en) | Secondary side overcurrent protection circuit of electric arc furnace transformer | |
| CN207487838U (en) | Transformer temperature control device temperature transmitter | |
| CN103777103B (en) | A kind of arc suppression coil state online test method and device | |
| CN204205560U (en) | leakage protection circuit | |
| CN207339261U (en) | A kind of overvoltage protection device for preventing high pressure from sealing in electrification display | |
| CN202634288U (en) | Novel frequency converter | |
| CN101789591A (en) | Novel back-up protection device for surge protector | |
| CN102694368A (en) | Shorting protection for systems having electric machines | |
| CN205123231U (en) | High -temperature early warning surge protector | |
| CN204948040U (en) | A kind of metal-oxide-semiconductor current foldback circuit | |
| CN104377647A (en) | Electric leakage protection circuit | |
| CN108092250A (en) | A kind of failure current limit equipment and control method | |
| CN201336569Y (en) | Novel back-up protection device for surge protector | |
| CN200941556Y (en) | Neutral point non-linear voltage limiting earthing device | |
| KR101970006B1 (en) | Apparatus and Method for preventing malfunction of Circuit Breaker in Metal-Clad and Metal enclosed Swithgear | |
| CN203014373U (en) | Transient surge protector used specially for elevator | |
| CN109921405A (en) | A kind of earthing method of medium voltage network neutral point | |
| CN202888818U (en) | Novel surge protection device (SPD) | |
| CN202663106U (en) | Open-circuit prevention protective circuit for end screen grounding | |
| CN206727647U (en) | A kind of step isolates lightning protection box | |
| WO2013139382A1 (en) | Current control apparatus | |
| CN204103449U (en) | There is the earth leakage protective device of self-checking function, electrical connection equipment and power consumption equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20181204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |