CN206531742U - A kind of device of the micro- water densities of on-line monitoring SF6 - Google Patents
A kind of device of the micro- water densities of on-line monitoring SF6 Download PDFInfo
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- CN206531742U CN206531742U CN201621364856.8U CN201621364856U CN206531742U CN 206531742 U CN206531742 U CN 206531742U CN 201621364856 U CN201621364856 U CN 201621364856U CN 206531742 U CN206531742 U CN 206531742U
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Abstract
The utility model discloses a kind of device of the micro- water densities of on-line monitoring SF6, including sampling air chamber, ventilation interface, processor, display unit, antifreeze auxiliary thermal modules.Sampling air chamber, ventilation interface, processor and display unit constitute monitoring unit, the pressure sensor being connected with signal processor, temperature sensor and dew point transducer are installed in sampling air chamber, the signal that processor is collected to pressure sensor, temperature sensor and dew point transducer is judged and send result to display unit to show.The utility model is adapted to weather conditions of extremely trembling with fear, and meets the round-the-clock requirement continuously run for 7 × 24 hours, and its performance safety is reliable, and operating ambient temperature can as little as 55 DEG C.
Description
Technical field
The invention belongs to power transmission and transformation on-line monitoring technique field, the micro- water of SF6 is monitored on-line more specifically to one kind
The device of density.
Background technology
With expanding economy, the demand of China's electric energy is growing day by day, power system gradually to Large Copacity, it is remote,
Super-pressure direction is developed.Normal operation of the insulating properties of electrical equipment to power system plays material impact, insulating properties
Decline is a principal element of electrical equipment failure.SF6 gases have good insulating properties and arc extinction performance, are used as one kind
Important dielectric, its application has obtained unprecedented development.In high-voltage electrical equipments of the SF6 as dielectric, SF6 gas
When gas phase water content in the decline of body pressure or gas is reached to a certain degree, will all reduce equipment performance influences the normal fortune of equipment
OK.Therefore, the micro-water content in SF6 gases and density are carried out and monitored on-line, to ensureing that the safe and stable operation of equipment has
Important effect.
China region is wide, adjoins Russia Siberia northernmost, intemperance and long-term temperature is relatively low.In pole
Under cold weather, the physical attribute change of the electronic component of on-Line Monitor Device causes circuit not work；Insulating materials, welding
Agent hydraulic performance decline causes some mechanical failure；Technical requirement can not be fully achieved in sensor accuracy, cause front-end collection number
According to unreliable.Therefore, extremely trembling with fear under weather, the reliability of on-Line Monitor Device can not ensure, it is difficult under the conditions of pole cold air time
Long-term stable operation.However, the field monitoring unit of the conventional micro- water density on-line monitoring systems of SF6 sets for technical grade at present
Meter, its environment temperature that can be applicable is -40 DEG C~+55 DEG C (according to national grid company standard《Transformer on-line monitoring dress
Put general technology specification》), it is impossible to the operational monitoring requirement under extremely cold area weather condition is met, not yet has product can with technology
To overcome the low temperature Problem of Failure of on-line monitoring system sensor.
Therefore, for the requirement of the micro- water density on-line monitorings of SF6 under weather of extremely trembling with fear, the reliability of on-Line Monitor Device is improved
And stability, the generation for situations such as preventing from reporting by mistake, refuse to submit or even can not normally run, truly delicately reflect under weather of extremely trembling with fear
The parameter of line monitoring, it is necessary suitable for the micro- water density on-Line Monitor Devices of SF6 under weather of extremely trembling with fear to study a kind of.
In view of this, the present invention provides a kind of device for being applied to monitor the micro- water densities of SF6 under extremely cold weather on-line, with full
Sufficient practical application needs.
The content of the invention
To overcome the defect that prior art is present, the present invention provides a kind of device of the micro- water densities of on-line monitoring SF6.
The technical solution adopted for the present invention to solve the technical problems is：
Design a kind of device of the micro- water densities of on-line monitoring SF6, including sampling air chamber, ventilation interface, processor, display
Unit, antifreeze auxiliary thermal modules, the sampling air chamber, ventilation interface, processor and display unit constitute monitoring unit, described to adopt
The pressure sensor being connected with signal processor, temperature sensor and dew point transducer, the processor are installed in sample air chamber
The signal that pressure sensor, temperature sensor and dew point transducer are collected is judged and is sent result to display list
Member display；The antifreeze auxiliary thermal modules are arranged on inside monitoring unit；Also include RS-485 communication interfaces, the RS-485 communications
Monitoring Data is uploaded to Surveillance center by interface in real time using Modbus-rtu communications protocol.
In the above-mentioned technical solutions, the antifreeze auxiliary thermal modules include support, heater, heat abstractor and overtemperature prote dress
Put, the heater and heat abstractor are arranged on internal stent, the overtemperature protection device is close to support and is fixed on after support
Side.
In the above-mentioned technical solutions, the heater is encapsulated using 2 PTC heating plates in parallel and by aluminum pipe.
In the above-mentioned technical solutions, the heat abstractor includes copper cooling fin and is fixed on the copper cooling fin
Radiator fan, the PTC heating plates are pasted onto on copper cooling fin or are pasted onto on radiator fan by high-temperature heat-conductive silica gel.
In the above-mentioned technical solutions, the overtemperature protection device is using the Kick type temperature controller for being series at PTC current supply circuits.
Implement a kind of device of the present invention micro- water densities of on-line monitoring SF6, have the advantages that：
The present invention is adapted to weather conditions of extremely trembling with fear, and meets the round-the-clock requirement continuously run for 7 × 24 hours, its performance peace
Complete reliable, operating ambient temperature can as little as -55 DEG C.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is a kind of structural representation of the device of the present invention micro- water densities of on-line monitoring SF6；
Fig. 2 is the structural representation of antifreeze auxiliary thermal modules；
Fig. 3 is the schematic diagram of PTC heating plates；
Fig. 4 is the schematic diagram of radiator fan；
Fig. 5 is the circuit theory diagrams of antifreeze auxiliary thermal modules.
Wherein：1- heaters, 2- copper cooling fins, 3- radiator fans, 4- overtemperature protection devices, 5- supports.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now compare accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figure 1, a kind of device of the present invention micro- water densities of on-line monitoring SF6, including sampling air chamber, ventilation interface,
Processor, display unit, antifreeze auxiliary thermal modules.Air chamber, ventilation interface, processor and the display unit composition of sampling monitor single
The pressure sensor being connected with signal processor, temperature sensor and dew point transducer, processor are installed in member, sampling air chamber
The signal that pressure sensor, temperature sensor and dew point transducer are collected is judged and is sent result to display list
Member display.
Antifreeze auxiliary thermal modules are arranged on inside monitoring unit, for carrying out actively heating and insulation to monitoring unit, it is ensured that
Monitoring unit internal temperature is maintained between 0 DEG C~+70 DEG C, realizes that the device can be under weather of extremely trembling with fear to the micro- water of SF6 density
On-line monitoring.
Wherein, antifreeze auxiliary thermal modules include support 5, heater 1, heat abstractor and overtemperature protection device 4, the He of heater 1
Heat abstractor is arranged on inside support 5, and overtemperature protection device 4 is close to support 5 and is fixed on the rear side of support 5, as shown in Figure 2.
Heater 1 is active heat riser, for providing heat for monitoring unit, and it uses 2 PTC heating in parallel
Piece and encapsulated by aluminum pipe.Preferably, PTC heating plates use novel electron ceramic material, profile such as Fig. 3 institutes of PTC heating plates
Show, its appearance and size is 50 × 20 × 5mm, peak power is 40W, and curie point is 140 DEG C.The present invention is using 2 PTC in parallel
Heating plate so that the maximum general power of the heater 1 reaches 80W, can improve firing rate, can also improve antifreeze auxiliary thermal modules
Reliability, when one of PTC heating plates break down, another PTC heating plate still can work.Work as monitoring unit
During start-up operation, it is powered to PTC heating plates, dash current makes its temperature rapid increase, and the resistance of PTC heating plates immediately enters height
Resistance state transition area, only aftercurrent make PTC heating plate surface temperatures be maintained at steady state value, and now equilibrium temperature is not substantially by ring
Border temperature influence.The surface insulation of PTC heating plates, safe, AC/DC universal less demanding to power supply stability can be certainly
Temperature control is heated, and the response time is fast, is a kind of preferably auxiliary hot heat tracing device.
Heat abstractor includes copper cooling fin 2 and the radiator fan 3 that is fixed on copper cooling fin 2, for by heater 1
Heat be quickly delivered to inside monitoring unit, help heater 1 to reach auxiliary hot effect, and reduce the surface temperature of heater 1
Degree, maintains high-power output.PTC heating plates can be fixed using two ways with heat abstractor：1) it is viscous by high-temperature heat-conductive silica gel
It is attached on copper cooling fin 2, increases area of dissipation, heat is transmitted using free convection mode；2) it is pasted onto dissipating for radiator fan 3
On hot device, force air flow to convey hot-air to cold end, finally realize thermal balance.To ensure the reliability of radiator fan 3,
The present invention selects imported with original packaging type industrial computer CPU Special heat dissipating fans, and its noise is small, long lifespan, and profile is as shown in Figure 4.
Overtemperature protection device 4 is using the Kick type temperature controller for being series at PTC current supply circuits, for preventing PTC heating plates from losing
Effect and environment temperature cause monitoring unit internal temperature too high when higher, it is ensured that monitoring unit internal temperature is no more than 70 DEG C.Should
The break-off signal of Kick type temperature controller be 60 DEG C (temperature has certain deviation, to prevent monitoring unit internal temperature more than 70 DEG C,
Will be switched off threshold temperature relatively low), it is 45 DEG C to connect temperature.The circuit theory of antifreeze auxiliary thermal modules is as shown in Figure 5.
Apparatus of the present invention also include RS-485 communication interfaces, and RS-485 communication interfaces use Modbus-rtu communications protocol
Monitoring Data is uploaded to Surveillance center in real time.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (5)
1. a kind of device of the micro- water densities of on-line monitoring SF6, including sampling air chamber, ventilation interface, processor, display unit,
Antifreeze auxiliary thermal modules, it is characterised in that the sampling air chamber, ventilation interface, processor and display unit constitute monitoring unit,
The pressure sensor being connected with signal processor, temperature sensor and dew point transducer are installed in the sampling air chamber, it is described
The signal that processor is collected to pressure sensor, temperature sensor and dew point transducer is judged and is sent result to aobvious
Show that device unit is shown；The antifreeze auxiliary thermal modules are arranged on inside monitoring unit；Also include RS-485 communication interfaces, the RS-
Monitoring Data is uploaded to Surveillance center by 485 communication interfaces in real time using Modbus-rtu communications protocol.
2. the device of the micro- water densities of a kind of on-line monitoring SF6 according to claim 1, it is characterised in that described antifreeze auxiliary
Thermal modules include support (5), heater (1), heat abstractor and overtemperature protection device (4), the heater (1) and heat abstractor
Internal installed in support (5), the overtemperature protection device (4) is close to support (5) and is fixed on rear side of support (5).
3. a kind of device of the micro- water densities of on-line monitoring SF6 according to claim 2, it is characterised in that the heater
(1) 2 PTC heating plates in parallel are used and are encapsulated by aluminum pipe.
4. a kind of device of the micro- water densities of on-line monitoring SF6 according to claim 3, it is characterised in that the radiating dress
Put including copper cooling fin (2) and the radiator fan (4) being fixed on the copper cooling fin (2), the PTC heating plates pass through
High-temperature heat-conductive silica gel is pasted onto on copper cooling fin (2) or is pasted onto on radiator fan (4).
5. the device of the micro- water densities of a kind of on-line monitoring SF6 according to claim 2, it is characterised in that the overtemperature is protected
Protection unit (4) is using the Kick type temperature controller for being series at PTC current supply circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364856.8U CN206531742U (en) | 2016-12-13 | 2016-12-13 | A kind of device of the micro- water densities of on-line monitoring SF6 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364856.8U CN206531742U (en) | 2016-12-13 | 2016-12-13 | A kind of device of the micro- water densities of on-line monitoring SF6 |
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| Publication Number | Publication Date |
|---|---|
| CN206531742U true CN206531742U (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621364856.8U Active CN206531742U (en) | 2016-12-13 | 2016-12-13 | A kind of device of the micro- water densities of on-line monitoring SF6 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644826A (en) * | 2016-12-13 | 2017-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device for monitoring micro-water density of SF6 on line |
-
2016
- 2016-12-13 CN CN201621364856.8U patent/CN206531742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644826A (en) * | 2016-12-13 | 2017-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device for monitoring micro-water density of SF6 on line |
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