CN208537339U - Density relays and gas-insulated enclosed electrical appliances - Google Patents
Density relays and gas-insulated enclosed electrical appliances Download PDFInfo
- Publication number
- CN208537339U CN208537339U CN201821004965.8U CN201821004965U CN208537339U CN 208537339 U CN208537339 U CN 208537339U CN 201821004965 U CN201821004965 U CN 201821004965U CN 208537339 U CN208537339 U CN 208537339U
- Authority
- CN
- China
- Prior art keywords
- temperature
- pressure
- module
- flange
- gas
- 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.)
- Active
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
本实用新型涉及继电器技术领域，公开了一种密度继电器及气体绝缘封闭组合电器，包括：第一扩展法兰、信息处理模块、第一温度压力感应模块、第二扩展法兰、第二温度压力感应模块、第三温度压力感应模块；信息处理模块设于第一扩展法兰的顶端，第一温度压力感应模块设于第一扩展法兰的底端；第二温度压力感应模块设于第二扩展法兰的顶端，第三温度压力感应模块设于第二扩展法兰的底端，信息处理模块分别与第一、第二、第三温度压力感应模块无线连接。本实用新型能够准确地检测气体绝缘组合电器气室内的气体的压力和温度，以确保密度继电器能够准确反映当前气室内的气体的压力值和温度值，从而确保密度继电器能够准确输出报警信号或锁闭信号。
The utility model relates to the technical field of relays, and discloses a density relay and a gas-insulated enclosed electrical appliance, comprising: a first expansion flange, an information processing module, a first temperature and pressure sensing module, a second expansion flange, a second temperature and pressure a sensing module and a third temperature and pressure sensing module; the information processing module is set at the top of the first expansion flange, the first temperature and pressure sensing module is set at the bottom end of the first expansion flange; the second temperature and pressure sensing module is set at the second At the top of the expansion flange, the third temperature and pressure sensing module is arranged at the bottom end of the second expansion flange, and the information processing module is respectively wirelessly connected with the first, second and third temperature and pressure sensing modules. The utility model can accurately detect the pressure and temperature of the gas in the gas chamber of the gas-insulated combined electrical appliance, so as to ensure that the density relay can accurately reflect the current pressure value and temperature value of the gas in the gas chamber, so as to ensure that the density relay can accurately output an alarm signal or lock close the signal.
Description
Technical field
The utility model relates to relay technical fields, more particularly to a kind of density monitor and gas-insulated closed group
Close electric appliance.
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.
Utility model content
It, can accurately detection gas insulation in combined electric appliance gas the purpose of the utility model is to provide a kind of density monitor
The pressure and temperature of indoor gas, with ensure density monitor can accurately reflect the indoor gas of current gas pressure value and
Temperature value so that it is guaranteed that density monitor can accurately export alarm signal or locking signal, and then ensures the safety and stability of GIS
Operation.
In order to solve the above-mentioned technical problem, the utility model provides a kind of density monitor, 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 sensitive 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 flange shell is equipped with screw hole and central through hole, between the screw hole and central through hole
It is respectively equipped with former and later two seal grooves.
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 utility model also provides a kind of gas insulated switchgear, described
Gas insulated switchgear 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 utility model provides a kind of density monitor and gas insulated switchgear, the density monitor pass through
It is equipped with message processing module and the first temperature, pressure induction module on the first extension flange, and in second development method
Orchid is equipped with second temperature pressure sensitive module and third temperature, pressure induction module, while utilizing micro-electro-mechanical sensors precision
The advantages of high, good linearity, 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 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
Accurate output alarm signal or locking signal, and then ensure 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 utility model embodiment；
Fig. 2 is the structural schematic diagram of the message processing module in the utility model embodiment；
Fig. 3 is the front view of the message processing module in the utility model embodiment；
Fig. 4 is the electrical schematic diagram of the message processing module in the utility model embodiment；
Fig. 5 is the structural schematic diagram of the first extension flange in the utility model embodiment；
Fig. 6 is the structural schematic diagram of the temperature, pressure induction module in the utility model embodiment；
Fig. 7 is the front view of the temperature, pressure induction module in the utility model embodiment；
Fig. 8 is the structural schematic diagram of the gas insulated switchgear in the utility model embodiment.
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 sense
Answer module；7, ontology.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figure 1, in the utility model embodiment, 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 utility model provides a kind of density monitor 100, and the density monitor 100 passes through in first development method
Orchid 1 is equipped with message processing module 2 and the first temperature, pressure induction module 3, and the second extension flange 4 is equipped with second temperature
Pressure sensitive module 5 and third temperature, pressure induction module 6, and by the message processing module 2 respectively with first temperature
Pressure sensitive module 3, second temperature pressure sensitive module 5, third temperature, pressure induction module 6 are wirelessly connected, can be accurately
The pressure and temperature of the indoor gas of detection gas insulation in combined electric appliance gas, to ensure that density monitor 100 can accurately reflect
The pressure value and temperature value of the current indoor gas of 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.
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 to the shell 21
Inside, the temperature, pressure collector 22 are wirelessly connected with first temperature and pressure transmitter 23, the temperature, pressure acquisition
Device 22 is electrically connected with the processor 24.
In the utility model embodiment, in order to make structure rationalization, the message processing module 2 further include: the first gas
Road interface 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 by the bus interface 27 with external convergence control cabinet.
In addition, in the utility model embodiment, in order to observe the gas chamber of the temperature, pressure sensor measurement in real time
Interior temperature, pressure value, the message processing module 2 further include: liquid crystal display (not shown), the liquid crystal display are set to
The surface of the shell 21 of the message processing module 2, for showing the indoor temperature of gas of the temperature, pressure sensor measurement
Pressure value.
In addition, in the utility model embodiment, it should be noted that first temperature and pressure transmitter 23 is passive
Wireless microcomputer electro-temperature pressure inductor is passive device, without power supply；Meanwhile 2 shell 21 of message processing module is resistance to
High temperature organic glass material, with good electrical insulation capability, to ensure that the density monitor 100 has good electricity absolutely
Edge performance.
In addition, in the utility model embodiment, it should be noted that the message processing module 2 passes through the bus
Outlet 27 is 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
Degree transmits total six road signals according to transmission, pressure data transmission, alarm signal transmission and block signal.Wherein, the bus
Outlet 27 exports for the unique electrical of the message processing module 2, and electrical wiring is cast in the egress bus by epoxy
At 27, it is silent to form gas circuit.
In addition, in the utility model embodiment, it should be noted that the temperature, pressure collector 22 is to described first
Temperature and pressure transmitter 23 and the second temperature pressure sensor carry out real-time state monitoring, and are existed by total four settings
The color of the 2 surface of shell indicator light of message processing module indicates its connection status, such as: green is normal connection, red
Color is that 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 utility model embodiment is as follows:
Firstly, first temperature pressure sensing 23 acquires the indoor temperature of gas and pressure data of position in real time,
And data are wirelessly transmitted in the temperature, pressure collector 22；Then, the Switching Power Supply 26 is gone out by the bus
Mouth 27 is electrically connected with the external convergence control cabinet exchange, and is the temperature, pressure collector by the internal output direct current that rectifies
22 power supplies, wherein there are four collector antennas for setting in the temperature, pressure collector 22, for receiving first temperature
Pressure sensor 23 and total four groups of temperature, pressure data of second temperature pressure sensor wireless transmission, and through built-in processing
Device 24 carries out signal processing to four groups of data, and four groups of temperature, pressure data are converted into the SF at 20 DEG C6Gas pressure
Force value；Finally, minimum value in four groups of switching to pressure values is labeled as monitor value, when monitor value is high less than alarm pressure value
When being latched pressure value, the temperature, pressure collector 22 exports alarm signal to the convergence control cabinet；When monitor value is less than locking
When pressure value, the temperature, pressure collector 22 exports block signal to the convergence control cabinet；Meanwhile passing through the liquid crystal display
The real-time display 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 the utility model embodiment, first shut-off valve 13 can cut off or be connected to first module interface 12
The first pressure temperature sense module 3 or the message processing module 2 connected, to the first pressure temperature sense
Module 3 or the message processing module 2 are overhauled or are replaced；Moreover, it is noted that the first manual gas vent
14 need to use when first shut-off valve 13 is in dissengaged positions, the institute connected for discharging first module interface 12
State the gas pressure in first pressure temperature sense module 3 or the message processing module 2.
In the utility model embodiment, it is preferable that screw hole and central through hole are additionally provided on the flange shell 11, it is described
Former and later two seal grooves are respectively equipped between screw hole and central through hole.
In the utility model embodiment, 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 the utility model embodiment, the second temperature pressure inductor 32 is passive and wireless Electromechanical temperature pressure biography
Sensor is passive device, without power supply, is capable of real-time acquisition the temperature and pressure data of position, and data are wirelessly transferred
Into the temperature, pressure collector 22 of the message processing module 2.
In the utility model embodiment, the shell 31 of the temperature, pressure induction module 3 is high temperature resistant organic glass material
Matter.
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, in order to solve identical technical problem, the utility model also provides a kind of gas-insulated closing combination
Electric appliance 200, the gas insulated switchgear 200 include above-mentioned density monitor 100, the gas-insulated closed group
Close electric appliance 200 further include: ontology 7, the first disc insulator (not shown), the second disc insulator (not shown)；
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 respectively.
To sum up, the utility model provides a kind of density monitor 100 and gas insulated switchgear 200, described close
It spends relay 100 and is equipped with message processing module 2 and the first temperature, pressure induction module 3 on flange 1 by extending described first,
The second extension flange 4 is equipped with second temperature pressure sensitive module 5 and third temperature, pressure induction module 6, and will be described
Message processing module 2 respectively with the first temperature, pressure induction module 3, second temperature pressure sensitive module 5, third temperature pressure
Power induction module 6 is wirelessly connected, and is capable of the pressure and temperature of the accurately indoor gas of detection gas insulation in combined electric appliance gas, with
Ensure that 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 after
Electric appliance 100 can accurately export alarm signal or locking signal, and then ensure the safe and stable operation of GIS.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
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 the flange shell is equipped with screw hole and center is logical
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 described first, which extends flange, includes
Flange shell, the flange shell are equipped with screw hole and central through hole, and front and back is respectively equipped between the screw hole and central through hole
The one side of two seal grooves, the first extension flange passes through set on the sealing ring between the screw hole and the central through hole
Slot is tightly connected with one end of the ontology and the concave surface of the first disc insulator respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821004965.8U CN208537339U (en) | 2018-06-27 | 2018-06-27 | Density relays and gas-insulated enclosed electrical appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821004965.8U CN208537339U (en) | 2018-06-27 | 2018-06-27 | Density relays and gas-insulated enclosed electrical appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208537339U true CN208537339U (en) | 2019-02-22 |
Family
ID=65380851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821004965.8U Active CN208537339U (en) | 2018-06-27 | 2018-06-27 | Density relays and gas-insulated enclosed electrical appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208537339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100260A (en) * | 2018-06-27 | 2018-12-28 | 南方电网科学研究院有限责任公司 | Density relays and gas-insulated closed combination appliances |
| CN113281218A (en) * | 2021-05-25 | 2021-08-20 | 国网河北省电力有限公司检修分公司 | Gas density monitoring method and device, storage medium and electronic equipment |
-
2018
- 2018-06-27 CN CN201821004965.8U patent/CN208537339U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100260A (en) * | 2018-06-27 | 2018-12-28 | 南方电网科学研究院有限责任公司 | Density relays and gas-insulated closed combination appliances |
| CN113281218A (en) * | 2021-05-25 | 2021-08-20 | 国网河北省电力有限公司检修分公司 | Gas density monitoring method and device, storage medium and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104616931B (en) | A kind of low temperature resistant digital SF6 relay | |
| EP4027155B1 (en) | Gas density relay with online self-calibration function and calibration method thereof | |
| EP4027152B1 (en) | Method for modifying a gas density relay with online self-calibration function and calibration method therefof | |
| CN110501260A (en) | A gas density relay with online self-calibration function and its calibration method | |
| CN110514995A (en) | A gas density relay with online self-calibration function and its calibration method | |
| CN208537339U (en) | Density relays and gas-insulated enclosed electrical appliances | |
| CN110542853B (en) | A gas density relay with online self-calibration function and calibration method thereof | |
| CN111508770A (en) | Digital gas density relay with self-diagnosis function and self-diagnosis method thereof | |
| CN203037284U (en) | Integrated SF6 gas density, micro water, temperature transmitter | |
| CN207636199U (en) | The sheath assembly and temperature measurement system of temperature change for sensing end | |
| CN211718032U (en) | Gas density relay with online self-checking function and monitoring device | |
| CN207379616U (en) | A kind of pessimistic securit switch temperature on-Line Monitor Device | |
| CN105374624B (en) | A kind of gas density relay provided with external gas density level indicator | |
| CN208537037U (en) | Cable Termination Temperature Fault Indicator | |
| CN204990041U (en) | Case alternating temperature humidity intelligence monitoring device | |
| CN209373010U (en) | Transformer detection system and transformer early warning system | |
| CN109100260A (en) | Density relays and gas-insulated closed combination appliances | |
| CN110491724A (en) | A kind of teletransmission gas density relay system and its method of calibration | |
| CN206497002U (en) | The digital output electromechanical integration SF of high reliability6Gas density transmitter | |
| CN102891437B (en) | Intelligent open combined electric appliance of isolation switch and mutual inductor | |
| CN110441679A (en) | Realize the non-maintaining electrical equipment of density monitor, method and system | |
| CN108801854B (en) | Gas density measuring device | |
| CN208688687U (en) | An information centralized processing device | |
| CN202206032U (en) | Intelligent open type combined electric appliance including disconnecting switch and mutual inductor | |
| CN212542274U (en) | Digital gas density relay with self-calibration function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |