CN109100260A - Density monitor and gas insulated switchgear - Google Patents
Density monitor and gas insulated switchgear Download PDFInfo
- Publication number
- CN109100260A CN109100260A CN201810683145.4A CN201810683145A CN109100260A CN 109100260 A CN109100260 A CN 109100260A CN 201810683145 A CN201810683145 A CN 201810683145A CN 109100260 A CN109100260 A CN 109100260A
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- China
- Prior art keywords
- temperature
- pressure
- module
- extension flange
- message processing
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
Abstract
The present invention relates to relay technical fields, disclose a kind of density monitor and gas insulated switchgear, comprising: the first extension flange, message processing module, the first temperature, pressure induction module, the second extension flange, second temperature pressure sensitive module, third temperature, pressure induction module；Message processing module is set to the top of the first extension flange, and the first temperature, pressure induction module is set to the bottom end of the first extension flange；Second temperature pressure sensitive module is set to the top of the second extension flange, and third temperature, pressure induction module is set to the bottom end of the second extension flange, and message processing module is wirelessly connected with the first, second, third temperature, pressure induction module respectively.The present invention is capable of the pressure and temperature of the accurately indoor gas of detection gas insulation in combined electric appliance gas, to ensure that density monitor can accurately reflect the pressure value and temperature value of the indoor gas of current gas, so that it is guaranteed that density monitor can accurately export alarm signal or locking signal.
Description
Technical field
The present invention relates to relay technical fields, more particularly to a kind of density monitor and gas-insulated closing combination electricity
Device.
Background technique
Filled with one in the gas chamber of gas insulated switchgear (Gas Insulated Switchgear, abbreviation GIS)
The SF of constant-pressure6Gas is as dielectric.In order to guarantee that GIS has excellent insulation performance, SF indoor to gas is needed6Gas
The pressure and temperature of body is detected, to ensure in SF6When the pressure and temperature offrating of gas, report can be exported in time
Alert signal or locking signal.
Currently, mainly detecting the indoor SF of gas using density monitor6The pressure and temperature of gas, existing density relay
Device is mainly using bourdon tube as measuring cell, after carrying out temperature-compensating to surveyed air pressure using the bimetal leaf built in density monitor
Conversion obtains the indoor SF of current gas6Pressure value of the gas under 20 °.But due to the bourdon tube in existing density monitor
For non-linear element, only in particular pressure range with the SF that is surveyed in gas chamber6The pressure value of gas is presented approximately linear and closes
System, and there are still certain errors, therefore cause SF6The pressure measurement errors of gas are larger；Further, since bimetal leaf is only capable of
The temperature value of its present position is compensated, and the length of the gas chamber of GIS is longer, therefore in direct sunlight, temperature shock
Etc. factors cause there are when temperature gradient in the gas chamber of GIS, bimetal leaf cannot correctly compensate actual temperature, cause
SF6The thermometric error of gas is larger, issues false alarm signal so as to cause density monitor or false-lock closes signal, and then lead
Cause seriously affects the safe and stable operation of GIS.
Summary of the invention
It, can be accurately in detection gas insulation in combined electric appliance gas chamber the object of the present invention is to provide a kind of density monitor
Gas pressure and temperature, to ensure that density monitor can accurately reflect the pressure value and temperature of the indoor gas of current gas
Value so that it is guaranteed that density monitor can accurately export alarm signal or locking signal, and then ensures the safety and stability fortune of GIS
Row.
In order to solve the above technical problem, the present invention provides a kind of density monitors, comprising: the first extension flange, information
Processing module, the first temperature, pressure induction module, the second extension flange, second temperature pressure sensitive module, third temperature, pressure
Induction module；
The message processing module is set to the top of the first extension flange, and the first temperature, pressure induction module is set
In the bottom end of the first extension flange；
The second temperature pressure sensitive module is set to the top of the second extension flange, the third temperature, pressure sense
Module is answered to be set to the bottom end of the second extension flange；
The message processing module respectively with the first temperature, pressure induction module, second temperature pressure sensitive module,
Third temperature, pressure induction module is wirelessly connected.
As prioritization scheme, the message processing module includes: shell, temperature, pressure collector, the first temperature, pressure biography
Sensor, processor；
The temperature, pressure collector, the first temperature and pressure transmitter and processor are disposed in the housing portion, described
Temperature, pressure collector and first temperature and pressure transmitter are wirelessly connected, the temperature, pressure collector and the processor
Electrical connection.
As prioritization scheme, the message processing module further include: the first air-path interface, Switching Power Supply, bus interface；
First air-path interface is set to the message processing module bottom end, and the message processing module passes through described first
Air-path interface and the first extension flange are tightly connected；
One end of the Switching Power Supply is electrically connected with one end of the temperature, pressure collector, the Switching Power Supply it is another
End is electrically connected by the bus interface with external convergence control cabinet.
As prioritization scheme, the message processing module further include: liquid crystal display, the liquid crystal display are set to described
The surface of the shell of message processing module, the temperature, pressure value for the measurement of displays temperature pressure inductor.
As prioritization scheme, the first extension flange is specifically included:
Flange shell, the flange shell upper end are equipped with the first module interface, and first module interface two sides are set respectively
There are the first shut-off valve and first manual gas vent, the flange shell lower end is equipped with the second module interface, and second module connects
Mouth two sides are respectively equipped with the second shut-off valve and the second manual air vent.
As prioritization scheme, the first extension flange shell is equipped with screw hole and central through hole, the screw hole and center
Former and later two seal grooves are respectively equipped between through-hole.
As prioritization scheme, the first temperature, pressure induction module is specifically included: induction module shell, second temperature pressure
Force snesor, the second air-path interface；
The second temperature pressure sensor be set to the induction module enclosure interior, and with the message processing module without
Line connection,；
Second air-path interface is set to the induction module housing bottom, and the first temperature, pressure induction module passes through
Second air-path interface and the first extension flange are tightly connected
As prioritization scheme, the first, second temperature, pressure inductor is passive and wireless Electromechanical temperature pressure sensor.
In order to solve identical technical problem, the present invention also provides a kind of gas insulated switchgear, the gas
Insulation and obturation combined electrical apparatus includes above-mentioned density monitor, the gas insulated switchgear further include: ontology, first
Disc insulator, the second disc insulator；
The one side of the first extension flange and one end of the ontology are fastenedly connected, and described first extends the another of flange
Face and the concave surface of first disc insulator are fastenedly connected；
The one side of the second extension flange and the other end of the ontology are fastenedly connected, and described second extends the another of flange
The concave surface with second disc insulator is fastenedly connected on one side.
As prioritization scheme, the one side of the first extension flange is by being set between the screw hole and the central through hole
Seal groove, be tightly connected respectively with one end of the ontology and the concave surface of the first disc insulator.
The present invention provides a kind of density monitor and gas insulated switchgear, the density monitor pass through in institute
The first extension flange is stated equipped with message processing module and the first temperature, pressure induction module, and on the second extension flange
Equipped with second temperature pressure sensitive module and third temperature, pressure induction module, while the high, line using micro-electro-mechanical sensors precision
The good advantage of property is capable of the pressure and temperature of the accurately indoor gas of detection gas insulation in combined electric appliance gas, to ensure density
Relay can accurately reflect the pressure value and temperature value of the indoor gas of current gas, so that it is guaranteed that density monitor can be accurate
Alarm signal or locking signal are exported, and then ensures the safe and stable operation of GIS.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the density monitor in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the message processing module in the embodiment of the present invention；
Fig. 3 is the front view of the message processing module in the embodiment of the present invention；
Fig. 4 is the electrical schematic diagram of the message processing module in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the first extension flange in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the temperature, pressure induction module in the embodiment of the present invention；
Fig. 7 is the front view of the temperature, pressure induction module in the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the gas insulated switchgear in the embodiment of the present invention.
Wherein, 100, density monitor；200, gas insulated switchgear；
1, the first extension flange；11, flange shell；12, the first module interface；13, the first shut-off valve；14, first manual
Gas vent；15, the second module interface；16, the second shut-off valve；17, the second manual air vent；2, message processing module；21, shell
Body；22, temperature, pressure collector；23, the first temperature and pressure transmitter；24, processor；25, the first air-path interface；26, it switchs
Power supply；27, bus interface；3, the first temperature, pressure induction module；31, induction module shell；32, second temperature pressure sensitive
Device；33, the second air-path interface 33；4, the second extension flange；5, second temperature pressure sensitive module；6, third temperature, pressure incudes
Module；7, ontology；8, the first disc insulator；9, the second disc insulator.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figure 1, in embodiments of the present invention, the density monitor 100 includes:
First extension flange 1, message processing module 2, the first temperature, pressure induction module 3, second extend flange 4, second
Temperature, pressure induction module 5, third temperature, pressure induction module 6；
The message processing module 2 is set to the top of the first extension flange 1, the first temperature, pressure induction module
3 are set to the bottom end of the first extension flange 1；
The second temperature pressure sensitive module 5 is set to the top of the second extension flange 4, the third temperature, pressure
Induction module 6 is set to the bottom end of the second extension flange 4；
The message processing module 2 respectively with the first temperature, pressure induction module 3, second temperature pressure sensitive module
5, third temperature, pressure induction module 6 is wirelessly connected.
The present invention provides a kind of density monitor 100, and the density monitor 100 passes through in the first extension flange 1
It is equipped with message processing module 2 and the first temperature, pressure induction module 3, the second extension flange 4 is equipped with second temperature pressure
Power induction module 5 and third temperature, pressure induction module 6, and by the message processing module 2 respectively with the first temperature pressure
Power induction module 3, second temperature pressure sensitive module 5, third temperature, pressure induction module 6 are wirelessly connected, and can accurately be examined
The pressure and temperature for surveying the indoor gas of gas insulated combined electrical equipment gas, is worked as with ensuring that density monitor 100 can accurately reflect
The pressure value and temperature value of the preceding indoor gas of gas, so that it is guaranteed that density monitor 100 can accurately export alarm signal or lock
Signal is closed, and then ensures the safe and stable operation of GIS.
In conjunction with shown in Fig. 1 to Fig. 4, in order to make structure rationalization, and accurately survey can accurately reflect the indoor gas of current gas
The pressure value and temperature value of body, so that it is guaranteed that density monitor 100 can accurately export alarm signal or locking signal, the letter
Ceasing processing module 2 includes: shell 21, temperature, pressure collector 22, the first temperature and pressure transmitter 23, processor 24；
The temperature, pressure collector 22, the first temperature and pressure transmitter 23 and processor 24 are set in the shell 21
Portion, the temperature, pressure collector 22 are wirelessly connected with first temperature and pressure transmitter 23, the temperature, pressure collector
22 are electrically connected with the processor 24.
In embodiments of the present invention, in order to make structure rationalization, the message processing module 2 further include: the first gas circuit connects
Mouth 25, Switching Power Supply 26, bus interface 27；
First air-path interface 25 is set to 2 bottom end of message processing module, and the message processing module 2 passes through described
First gas circuit connects 25 mouthfuls and is tightly connected with the first extension flange 1；
One end of the Switching Power Supply 26 is electrically connected with one end of the temperature, pressure collector 22, the Switching Power Supply
26 other ends are electrically connected with by the bus interface 27 with external convergence control cabinet.
In addition, in embodiments of the present invention, the gas in order to observe the temperature, pressure sensor measurement in real time is indoor
Temperature, pressure value, the message processing module 2 further include: liquid crystal display (not shown), the liquid crystal display are set to described
The surface of the shell 21 of message processing module 2, for showing the indoor temperature, pressure of gas of the temperature, pressure sensor measurement
Value.
In addition, in embodiments of the present invention, it should be noted that first temperature and pressure transmitter 23 is passive and wireless
Micro electronmechanical temperature, pressure inductor is passive device, without power supply；Meanwhile 2 shell 21 of message processing module is high temperature resistant
Organic glass material, with good electrical insulation capability, to ensure that the density monitor 100 has good electrical insulating property
Energy.
In addition, in embodiments of the present invention, it should be noted that the message processing module 2 passes through the egress bus
27 are electrically connected with external convergence control cabinet, to carry out information exchange and electrical interconnection, and there is alternating-current electric to connect two-way, temperature number
Total six road signals are transmitted according to transmission, pressure data transmission, alarm signal transmission and block signal.Wherein, the egress bus
27 export for the unique electrical of the message processing module 2, and electrical wiring is cast at the egress bus 27 by epoxy,
It is silent to form gas circuit.
In addition, in embodiments of the present invention, it should be noted that the temperature, pressure collector 22 is to first temperature
Pressure sensor 23 and the second temperature pressure sensor carry out real-time state monitoring, and are arranged by total four described
The color of 2 surface of shell indicator light of message processing module indicates its connection status, such as: green is normal connection, and red is
Connection is lost, and yellow is in connection.
In conjunction with shown in Fig. 1-4, the working principle of the message processing module 2 in the embodiment of the present invention is as follows:
Firstly, first temperature and pressure transmitter 23 acquires the indoor temperature of gas and number pressure of position in real time
According to, and data are wirelessly transmitted in the temperature, pressure collector 22；Then, the Switching Power Supply 26 is passed through into the bus
Outlet 27 is electrically connected with the external convergence control cabinet exchange, and is the temperature, pressure collector by internal rectification output direct current
22 power supplies, wherein there are four collector antennas for setting in the temperature, pressure collector 22, for receiving the first temperature pressure
Force snesor 23 and total four groups of temperature, pressure data of second temperature pressure sensor wireless transmission, and through internal processor 24
Signal processing is carried out to four groups of data, four groups of temperature, pressure data are converted into the SF at 20 DEG C6Gas pressure value；
Finally, minimum value in four groups of switching to pressure values is labeled as monitor value, it is higher than and closes when monitor value is less than alarm pressure value
When locking pressure value, the temperature, pressure collector 22 exports alarm signal to the convergence control cabinet；When monitor value is less than locking pressure
When value, the temperature, pressure collector 22 exports block signal to the convergence control cabinet；Meanwhile it is real-time by the liquid crystal display
Show the monitor value.
Referring to figure 1 and figure 5, in order to make structure rationalization, the first extension flange 1 is specifically included:
Flange shell 11,11 upper end of flange shell are equipped with the first module interface 12,12 liang of first module interface
Side is respectively equipped with the first shut-off valve 13 and first manual gas vent 14, and 11 lower end of flange shell is equipped with the second module interface
15,15 two sides of the second module interface are respectively equipped with the second shut-off valve 16 and the second manual air vent 17.
In embodiments of the present invention, first shut-off valve 13 can cut off or be connected to first module interface 12 and connect
The first pressure temperature sense module 3 or the message processing module 2 connect, to the first pressure temperature sense module
3 or the message processing module 2 overhauled or replaced；Moreover, it is noted that the first manual gas vent 14 need to be
First shut-off valve 13 uses when being in dissengaged positions, described first connected for discharging first module interface 12
Gas pressure in pressure and temp induction module 3 or the message processing module 2.
In embodiments of the present invention, it is preferable that it is additionally provided with screw hole and central through hole on the first extension flange shell 11,
Former and later two seal grooves are respectively equipped between the screw hole and central through hole.
In embodiments of the present invention, the flange shell 11 of the first extension flange 10 is metal aluminium material.
Moreover, it is noted that the second extension flange 4 extends in structure, function and material with described first
Flange 1 is completely the same, therefore details are not described herein again.
In conjunction with shown in Fig. 1 and Fig. 6, Fig. 7, in order to accurately measure the gas insulated switchgear 100 temperature and
The real-time condition of pressure, the first temperature, pressure induction module 3 specifically include: induction module shell 31, second temperature pressure
Sensor 32, the second air-path interface 33；
The second temperature pressure sensor 32 be set to the induction module shell 31 inside, and with the information processing mould
Block 2 is wirelessly connected,；
Second air-path interface 33 is set to 31 bottom end of induction module shell, the first temperature, pressure induction module
3 are tightly connected by second air-path interface 33 and the first extension flange 1
In embodiments of the present invention, the second temperature pressure inductor 32 is passive and wireless Electromechanical temperature pressure sensing
Device is passive device, without power supply, is capable of real-time acquisition the temperature and pressure data of position, and data are wirelessly transmitted to
In the temperature, pressure collector 22 of the message processing module 2.
In embodiments of the present invention, the shell 31 of the temperature, pressure induction module 3 is high temperature resistant organic glass material.
Moreover, it is noted that the second temperature pressure sensitive module 5, third temperature, pressure induction module 6 are being tied
It is completely the same with the first temperature, pressure induction module 3 in structure, function and material, therefore details are not described herein again.
As shown in figure 8, the present invention also provides a kind of gas insulated switchgears in order to solve identical technical problem
200, the gas insulated switchgear 200 includes above-mentioned density monitor 100, the gas-insulated closing combination electricity
Device 200 further include: ontology 7, the first disc insulator 8, the second disc insulator 9；
The one side of the first extension flange 1 and one end of the ontology 7 are fastenedly connected, the first extension flange 2
The concave surface of another side and first disc insulator 8 is fastenedly connected；
The one side of the second extension flange 4 and the other end of the ontology 7 are fastenedly connected, the second extension flange 4
The concave surface of another side and second disc insulator 9 be fastenedly connected.
Specifically, the one side of the first extension flange 1 is close between the screw hole and the central through hole by being set to
Seal slot is tightly connected with one end of the ontology 7 and the concave surface of the first disc insulator 8 respectively.
To sum up, the present invention provides a kind of density monitor 100 and gas insulated switchgear 200, the density after
Electric appliance 100 is described by being equipped with message processing module 2 and the first temperature, pressure induction module 3 on the first extension flange 1
Second extension flange 4 is equipped with second temperature pressure sensitive module 5 and third temperature, pressure induction module 6, and by the information
Processing module 2 respectively with the first temperature, pressure induction module 3, second temperature pressure sensitive module 5, third temperature, pressure sense
It answers module 6 to be wirelessly connected, is capable of the pressure and temperature of the accurately indoor gas of detection gas insulation in combined electric appliance gas, to ensure
Density monitor 100 can accurately reflect the pressure value and temperature value of the indoor gas of current gas, so that it is guaranteed that density monitor
100 can accurately export alarm signal or locking signal, and then ensure the safe and stable operation of GIS.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of density monitor, which is characterized in that the density monitor include: the first extension flange, message processing module,
First temperature, pressure induction module, the second extension flange, second temperature pressure sensitive module, third temperature, pressure induction module；
The message processing module is set to the top of the first extension flange, and the first temperature, pressure induction module is set to institute
State the bottom end of the first extension flange；
The second temperature pressure sensitive module is set to the top of the second extension flange, and the third temperature, pressure incudes mould
Block is set to the bottom end of the second extension flange；
The message processing module respectively with the first temperature, pressure induction module, second temperature pressure sensitive module, third
Temperature, pressure induction module is wirelessly connected.
2. density monitor as described in claim 1, which is characterized in that the message processing module includes: shell, temperature pressure
Power collector, the first temperature and pressure transmitter, processor；
The temperature, pressure collector, the first temperature and pressure transmitter and processor are disposed in the housing portion, the temperature
Pressure acquisition devices and first temperature and pressure transmitter are wirelessly connected, and the temperature, pressure collector is electrically connected with the processor
It connects.
3. density monitor as claimed in claim 2, which is characterized in that the message processing module further include: the first gas circuit
Interface, Switching Power Supply, bus interface；
First air-path interface is set to the message processing module bottom end, and the message processing module passes through first gas circuit
Interface and the first extension flange are tightly connected；
One end of the Switching Power Supply is electrically connected with one end of the temperature, pressure collector, and the other end of the Switching Power Supply is logical
The bus interface is crossed to be electrically connected with external convergence control cabinet.
4. density monitor as claimed in claim 3, which is characterized in that the message processing module further include: liquid crystal display
Screen, the liquid crystal display are set to the surface of the shell of the message processing module, measure for displays temperature pressure inductor
Temperature, pressure value.
5. density monitor as described in claim 1, which is characterized in that the first extension flange specifically includes:
Flange shell, the flange shell upper end are equipped with the first module interface, and first module interface two sides are respectively equipped with the
One shut-off valve and first manual gas vent, the flange shell lower end are equipped with the second module interface, second module interface two
Side is respectively equipped with the second shut-off valve and the second manual air vent.
6. density monitor as claimed in claim 5, which is characterized in that it is described first extension flange shell be equipped with screw hole and
Central through hole is respectively equipped with former and later two seal grooves between the screw hole and central through hole.
7. density monitor as described in claim 1, which is characterized in that the first temperature, pressure induction module specifically wraps
It includes: induction module shell, second temperature pressure sensor, the second air-path interface；
The second temperature pressure sensor is set to the induction module enclosure interior, and wirelessly connects with the message processing module
It connects,；
Second air-path interface is set to the induction module housing bottom, and the first temperature, pressure induction module passes through described
Second air-path interface and the first extension flange are tightly connected.
8. the density monitor as described in claim 3 or 7, which is characterized in that the first, second temperature, pressure inductor is
Passive and wireless Electromechanical temperature pressure sensor.
9. a kind of gas insulated switchgear, which is characterized in that the gas insulated switchgear includes such as right
It is required that the described in any item density monitors of 1-8, the gas insulated switchgear further include: ontology, the first benzvalene form are exhausted
Edge, the second disc insulator；
The one side of the first extension flange and one end of the ontology are fastenedly connected, the another side of the first extension flange with
The concave surface of first disc insulator is fastenedly connected；
The one side of the second extension flange and the other end of the ontology are fastenedly connected, the another side of the second extension flange
It is fastenedly connected with the concave surface of second disc insulator.
10. gas insulated switchgear as claimed in claim 9, which is characterized in that the one of the first extension flange
Face by being set to seal groove between the screw hole and the central through hole, respectively with one end of the ontology and the first benzvalene form
The concave surface of insulator is tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810683145.4A CN109100260A (en) | 2018-06-27 | 2018-06-27 | Density monitor and gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810683145.4A CN109100260A (en) | 2018-06-27 | 2018-06-27 | Density monitor and gas insulated switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109100260A true CN109100260A (en) | 2018-12-28 |
Family
ID=64845237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810683145.4A Pending CN109100260A (en) | 2018-06-27 | 2018-06-27 | Density monitor and gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109100260A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202166437U (en) * | 2011-08-10 | 2012-03-14 | 平顶山市天勤仪表有限责任公司 | Telemetering SF6 gas density monitor |
| CN202797743U (en) * | 2012-09-26 | 2013-03-13 | 中电装备恩翼帕瓦（山东）高压开关有限公司 | Casing inflation flange |
| CN204857507U (en) * | 2015-08-25 | 2015-12-09 | 国网新疆电力公司昌吉供电公司 | Digital sulfur hexafluoride density relay that possesses teletransmission monitoring function |
| CN206804807U (en) * | 2017-06-03 | 2017-12-26 | 广东海坤电气实业有限公司 | A kind of SF6 gases on-line real-time measuremen device |
| JP2018006022A (en) * | 2016-06-28 | 2018-01-11 | 株式会社鷺宮製作所 | Sf6 gas density switch |
| CN208537339U (en) * | 2018-06-27 | 2019-02-22 | 南方电网科学研究院有限责任公司 | Density monitor and gas insulated switchgear |
-
2018
- 2018-06-27 CN CN201810683145.4A patent/CN109100260A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202166437U (en) * | 2011-08-10 | 2012-03-14 | 平顶山市天勤仪表有限责任公司 | Telemetering SF6 gas density monitor |
| CN202797743U (en) * | 2012-09-26 | 2013-03-13 | 中电装备恩翼帕瓦（山东）高压开关有限公司 | Casing inflation flange |
| CN204857507U (en) * | 2015-08-25 | 2015-12-09 | 国网新疆电力公司昌吉供电公司 | Digital sulfur hexafluoride density relay that possesses teletransmission monitoring function |
| JP2018006022A (en) * | 2016-06-28 | 2018-01-11 | 株式会社鷺宮製作所 | Sf6 gas density switch |
| CN206804807U (en) * | 2017-06-03 | 2017-12-26 | 广东海坤电气实业有限公司 | A kind of SF6 gases on-line real-time measuremen device |
| CN208537339U (en) * | 2018-06-27 | 2019-02-22 | 南方电网科学研究院有限责任公司 | Density monitor and gas insulated switchgear |
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| 宋亚凯等: "一种混合式SF6气体密度表的设计", 《电力系统及其自动化》 * |
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Application publication date: 20181228 |
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| RJ01 | Rejection of invention patent application after publication |