CN105470850B - A kind of Cubicle Gas-Insulated Switchgear and its gas density detecting device - Google Patents
A kind of Cubicle Gas-Insulated Switchgear and its gas density detecting device Download PDFInfo
- Publication number
- CN105470850B CN105470850B CN201510877169.XA CN201510877169A CN105470850B CN 105470850 B CN105470850 B CN 105470850B CN 201510877169 A CN201510877169 A CN 201510877169A CN 105470850 B CN105470850 B CN 105470850B
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- China
- Prior art keywords
- gas
- gas chamber
- section
- phase
- ventilating joint
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- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims description 51
- 238000009413 insulation Methods 0.000 claims description 35
- 238000009423 ventilation Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 8
- 229960000909 sulfur hexafluoride Drugs 0.000 description 8
- 229910018503 SF6 Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
- H02B13/0655—Means for detecting or reacting to mechanical or electrical defects through monitoring changes of gas properties
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to a kind of Cubicle Gas-Insulated Switchgear and its gas density detecting devices, gas density detecting device, including being used for the corresponding monitoring gas circuit connected with three-phase gas chamber, it monitors gas circuit and is equipped with density monitor, three-phase gas chamber concatenation is corresponded in monitoring gas circuit, and there are three ventilating joints, the gas chamber Connectivity Section connected with corresponding phase gas chamber is respectively provided on each ventilating joint, on-off valve is respectively equipped on the gas chamber Connectivity Section of each ventilating joint.When needing to carry out measuring density to the gas in single-phase gas chamber, the on-off valve on ventilating joint that can be corresponding to other two gas chambers is closed, and is cut off other two-phase gas chamber with monitoring the connection of gas circuit, is realized the measuring density to single-phase plenum interior gas.In monitoring, do not need to frequently dismantle corresponding gas circuit junction, can effectively ensure that the airtight effect of junction, also allow for carrying out the operation of single-phase gas chamber measuring density.
Description
Technical field
The present invention relates to a kind of Cubicle Gas-Insulated Switchgear and its gas density detecting devices.
Background technology
Cubicle Gas-Insulated Switchgear, that is, GIS including breaker, disconnecting switch, earthing switch, mutual inductor, is kept away
Thunder device, busbar, connector and outlet terminal, equipment and component are all enclosed in the shell of metallic ground, and inside is filled with centainly
The six-component force balance gas of pressure, to ensure the insulation performance inside GIS.
Sulfur hexafluoride gas inside GIS is sealed in a fixed high constant container, under rated pressure, is had
Certain density value, in the range of the various enabled conditions of GIS operations, although the pressure of sulfur hexafluoride gas is with the change of temperature
Change and change, still, the density value of sulfur hexafluoride gas is constant always.Because the insulation and arc extinction performance inside GIS are very big
The purity and density of sulfur hexafluoride gas are depended in degree, so, the prison of detection and density to sulphur hexafluoride gas purity
It is especially important depending on just seeming.
At present, mostly it is to the sulfur hexafluoride in the three-phase gas chamber of GIS inside using gas density detecting device as shown in Figure 1
What gas density was monitored, including monitoring gas circuit 100, monitoring concatenation in gas circuit 100, there are three corresponding three-phase gas chamber arrangements
Three self-sealing joints 200, and monitoring gas circuit 100 one end be equipped with density monitor.In use, by three self-sealing joints pair
It is answering to be docked and connected with three-phase gas chamber blow vent, by density monitor to monitoring the sulfur hexafluoride gas in gas circuit into line density
Detection.
But this gas density detecting device is by the blow vent of self-sealing joint and three-phase gas chamber due to being directly docked and connected,
Sulfur hexafluoride gas in three-phase gas chamber always mixes, when needing to be monitored the gas in single-phase gas chamber, it is necessary to
Other two self-sealing joints are disassembled, after completion monitors, then are reinstalled, but frequently dismounting can influence certainly in this way
Sealing joint docks the sealing performance at place with the blow vent of three-phase gas chamber, easily leaks air at self-sealing joint, and gas leakage probability is high.
Invention content
The present invention provides a kind of Cubicle Gas-Insulated Switchgear gas density detecting device, to solve existing skill
It is middle in art to there is technical issues that need to dismantle self-sealing joint to realize to the progress of single-phase plenum interior gas；Together
When, the present invention also provides a kind of Cubicle Gas-Insulated Switchgears using above-mentioned gas density monitoring device.
The technical solution of Cubicle Gas-Insulated Switchgear provided by the present invention gas density detecting device is：
A kind of Cubicle Gas-Insulated Switchgear gas density detecting device, including being used for the corresponding prison connected with three-phase gas chamber
Gas circuit is surveyed, monitoring gas circuit is equipped with density monitor, and corresponding to three-phase gas chamber in the monitoring gas circuit concatenates there are three ventilating joint,
The gas chamber Connectivity Section connected with corresponding phase gas chamber is respectively provided on each ventilating joint, on the gas chamber Connectivity Section of each ventilating joint
It is respectively equipped with on-off valve.
The ventilating joint is equipped with the gas circuit Connectivity Section that connect with the gas chamber Connectivity Section, monitoring gas circuit including with
Gas circuit Connectivity Section on the ventilating joint corresponds to the ventilation pipeline section of connection, between ventilation pipeline section and corresponding gas circuit Connectivity Section
Insulation system equipped with the phase insulation for being used to implement three-phase gas chamber.
The corresponding end welding of the ventilation pipeline section is fixed with welding point, and welding point is equipped with screw mounting hole,
Welding point is securely fitted on corresponding ventilating joint by the trip bolt being installed in screw mounting hole, the insulation knot
Structure include pad be located at felt pad between welding point and ventilating joint and wearing be arranged in screw mounting hole and trip bolt it
Between to realize insulation sleeve that trip bolt and welding point are dielectrically separated from, felt pad is equipped with the screw mounting hole in succession
There is the axial cylinder section being installed in screw mounting hole to ventilate with deviating from for axial cylinder section is arranged in for logical screw perforation, insulation sleeve
The outer section that turns edge of one end of connector is respectively equipped with the corresponding venthole connected, welding point on the welding point and felt pad
Corresponding ventilation pipeline section is connected with the gas circuit Connectivity Section of corresponding ventilating joint with the venthole on felt pad.
Seal groove is respectively equipped on the side of the ventilating joint and the direction of the welding point felt pad, is sealed
The corresponding sealing ring for being equipped with sealing performance at the venthole both ends aperture for ensureing felt pad in ring recess.
One end of the monitoring gas circuit is connected with erection joint, and the density monitor is docked and connected to be connect in the installation
On head, it is equipped in erection joint and is connect for installing standard density relay to carry out the calibration of calibration to the density monitor
Head.
The technical solution of Cubicle Gas-Insulated Switchgear provided by the present invention is：A kind of gas-insulated metal envelope
Switchgear is closed, the gas density detection device of measuring density, gas are carried out including three-phase gas chamber and to the gas in three-phase gas chamber
Volume density detection device includes the corresponding monitoring gas circuit connected with three-phase gas chamber, and monitoring gas circuit is equipped with density monitor, described
Correspond to ventilating joint there are three three-phase gas chamber concatenations in monitoring gas circuit, is respectively provided with and corresponding phase gas chamber on each ventilating joint
The gas chamber Connectivity Section of connection is respectively equipped with on-off valve on the gas chamber Connectivity Section of each ventilating joint.
The ventilating joint is equipped with the gas circuit Connectivity Section that connect with the gas chamber Connectivity Section, monitoring gas circuit including with
Gas circuit Connectivity Section on the ventilating joint corresponds to the ventilation pipeline section of connection, between ventilation pipeline section and corresponding gas circuit Connectivity Section
Insulation system equipped with the phase insulation for being used to implement three-phase gas chamber.
The corresponding end welding of the ventilation pipeline section is fixed with welding point, and welding point is equipped with screw mounting hole,
Welding point is securely fitted on corresponding ventilating joint by the trip bolt being installed in screw mounting hole, the insulation knot
Structure include pad be located at felt pad between welding point and ventilating joint and wearing be arranged in screw mounting hole and trip bolt it
Between to realize insulation sleeve that trip bolt and welding point are dielectrically separated from, felt pad is equipped with the screw mounting hole in succession
There is the axial cylinder section being installed in screw mounting hole to ventilate with deviating from for axial cylinder section is arranged in for logical screw perforation, insulation sleeve
The outer section that turns edge of one end of connector is respectively equipped with the corresponding venthole connected, welding point on the welding point and felt pad
Corresponding ventilation pipeline section is connected with the gas circuit Connectivity Section of corresponding ventilating joint with the venthole on felt pad.
Seal groove is respectively equipped on the side of the ventilating joint and the direction of the welding point felt pad, is sealed
The corresponding sealing ring for being equipped with sealing performance at the venthole both ends aperture for ensureing felt pad in ring recess.
One end of the monitoring gas circuit is connected with erection joint, and the density monitor is docked and connected to be connect in the installation
On head, it is equipped in erection joint and is connect for installing standard density relay to carry out the calibration of calibration to the density monitor
Head.
The beneficial effects of the invention are as follows：Cubicle Gas-Insulated Switchgear provided by the present invention is supervised with gas density
It surveys device when in use, monitors the correspondence of the gas chamber Connectivity Section on each ventilating joint of gas circuit and connected, also, each with each phase gas chamber
On-off valve is set respectively on the gas chamber Connectivity Section of ventilating joint, in this way, the action by controlling on-off valve, you can control gas chamber connects
The conducting and disconnection of logical section, and then conducting and disconnection of the corresponding phase gas chamber with monitoring gas circuit are controlled, so, needing to three
It when phase gas chamber carries out gas density monitoring, can open the on-off valve on the gas chamber Connectivity Section of all ventilating joints, gas chamber connection
Section is in the conduction state, and three-phase gas chamber is connected with monitoring gas circuit.And working as needs to carry out measuring density to the gas in single-phase gas chamber
When, the on-off valve on ventilating joint that can be corresponding to other two gas chambers is closed, and cuts off other two-phase gas chamber with monitoring gas circuit
Connection, realizes the measuring density to single-phase plenum interior gas.In monitoring, do not need to frequently dismantle corresponding gas circuit connection
Place, can effectively ensure that the airtight effect of junction, also allows for carrying out the operation of single-phase gas chamber measuring density.
Further, insulation system is equipped between the gas circuit Connectivity Section on ventilating joint and corresponding ventilation pipeline section, and then
Realize the phase insulation of three-phase gas chamber, the accident rate between reducing before GIS is run.
Further, insulation system by felt pad and insulation sleeve realize ventilation pipeline section, welding point and ventilating joint it
Between effective insulation, integral insulation is simple in structure, is quickly and expediently installed.
Further, sealing ring is installed additional to ensure the sealing performance at the venthole both ends aperture of felt pad, and then ensure
The sealing performance of entire gas density detecting device.
Further, erection joint is set in monitoring gas circuit, and density monitor is corresponding mounted on erection joint
On, it, can be corresponding on calibration connector by standard density relay when needing to carry out online calibration, online calibration operation
It is more convenient.
Description of the drawings
Fig. 1 is the structure diagram of existing Cubicle Gas-Insulated Switchgear gas density detecting device；
Fig. 2 is a kind of implementation of Cubicle Gas-Insulated Switchgear gas density detecting device provided by the present invention
The structure diagram of example；
Fig. 3 is the vertical view of Fig. 2；
Fig. 4 is Fig. 2 Center Vent tubes section and welding point welding structure schematic diagram；
Fig. 5 is the decomposition diagram of Fig. 2 Center Vent tubes section and ventilating joint insulation assembling structure；
Fig. 6 is the gas-insulated metal enclosed switchgear provided by the present invention using gas density detecting device shown in Fig. 2
The structure diagram of equipment.
Specific embodiment
As shown in Figures 2 to 5, a kind of implementation of Cubicle Gas-Insulated Switchgear gas density detecting device
, its volume density monitoring device in the embodiment includes, for the corresponding monitoring gas circuit connected with three-phase gas chamber, monitoring gas circuit
On be provided with 3 ventilating joints 1 to correspond to three-phase gas chamber.Erection joint 3 is connected in one end of monitoring gas circuit, in erection joint
Equipped with for the density monitor 4 to three-phase plenum interior gas progress measuring density.Gas circuit is monitored including corresponding by three
Three ventilation pipeline sections 2 that ventilating joint 1 and erection joint 3 are sequentially communicated, each both ends for ventilating pipeline section 2, which are respectively welded, to be fixed with
Welding point 5, welding point 5 are securely fitted in by trip bolt on ventilating joint 1.
Ventilating joint 1 herein is equipped with the gas chamber Connectivity Section for being connected with corresponding phase gas chamber, in each ventilating joint 1
The on-off valve that control gas chamber Connectivity Section corresponds to break-make is respectively provided on gas chamber Connectivity Section, by control the unlatching of on-off valve with
It closes, control each phase gas chamber and monitors the conducting and disconnection of gas circuit, and then can realize and the density of gas in single-phase gas chamber is supervised
It surveys.
In the present embodiment, welding point 5 is equipped with screw mounting hole 51, passes through the fastening being installed in screw mounting hole 51
Welding point 5 is securely fitted on corresponding ventilating joint 1 by screw.Ventilating joint 1 is equipped with the gas connected with gas chamber Connectivity Section
Road Connectivity Section, equipped with the exhausted of the phase insulation for being used to implement three-phase gas chamber between ventilation pipeline section 2 and corresponding gas circuit Connectivity Section
Edge structure, insulation system include padding the felt pad 6 being located between welding point 5 and ventilating joint 1 and wearing being arranged in screw peace
To realize insulation sleeve 7 that trip bolt and welding point 5 are dielectrically separated between dress hole 51 and trip bolt, felt pad 6 is equipped with
The screw perforation 61 being docked and connected with the screw mounting hole, insulation sleeve 7 have the axial cylinder section being installed in screw mounting hole
With the outer section that turns edge away from one end of ventilating joint for being arranged in axial cylinder section.It is respectively equipped on welding point 5 and felt pad 6 pair
The venthole that should be connected, venthole on welding point 5 and felt pad 6 is by corresponding ventilation pipeline section 2 and corresponding ventilating joint 1
Gas circuit Connectivity Section connects.
In the present embodiment, the venthole correspondence on welding point 5 and felt pad 6 is arranged in center position, and connects
Screw mounting hole on head is then correspondingly arranged at the corner location of welding point, and the screw perforation on felt pad is then correspondingly arranged at
At the corner location of felt pad.
Also, the sealing at the venthole both ends aperture to ensure felt pad, in the court of ventilating joint 1 and welding point 5
Seal groove is respectively equipped on the side of felt pad 6, the venthole being equipped with for ensureing felt pad is corresponded in seal groove
The sealing ring 8 of sealing performance at the aperture of both ends.
In the present embodiment, erection joint 3 is connected in one end of monitoring gas circuit, is equipped with that mark is installed in erection joint
For quasi- density monitor to carry out the calibration connector of calibration to density monitor 4, which can be self-sealing joint.
In use, three ventilating joint correspondences is made to be connected with three-phase gas chamber, when the on-off valve on three ventilating joints is located
It when opening state, borrows money and realizes the connection of three-phase branch bar gas chamber, to carry out measuring density to the gas in three-phase gas chamber.And
When needing to carry out measuring density to certain single-phase gas chamber, the break-make on other two corresponding ventilating joints of gas chamber can be closed
Valve, you can measuring density is carried out to single-phase gas chamber.And when the on-off valve on three ventilating joints is in off-state, pacifying
Standard density relay on the self-sealing joint on joint 3 is installed, online calibration function can be realized.
It, in this way can be with three-phase branch by setting insulation system between ventilation pipeline section and ventilating joint in the present embodiment
Phase insulation between busbar improves the safety coefficient of entire GIS.It in other embodiments, can also be by other forms, such as
Equipped insulation gas-guide tube realizes connecting for ventilation pipeline section and ventilating joint.
In the present embodiment, due to ventilation pipeline section be arranged in three ventilating joints between, in this way, every section ventilation length of pipe section compared with
It is short, convenient for designing, processing and clearing up maintenance.
As shown in fig. 6, the present invention also provides a kind of embodiment of Cubicle Gas-Insulated Switchgear, GIS herein
Essentially identical with the structure of GIS of the prior art, details are not described herein, and difference part essentially consists in：It installs additional such as Fig. 2 to figure
Gas density detecting device shown in 5, also, for ease of installation, cover board 13 on the three-phase gas chamber 12 of branch bar is installed, is being covered
It is corresponding on plate 13 to open up the corresponding mouth that is docked and connected, the ventilating joint of be docked and connected mouth and the gas density detecting device of cover board 13
On gas chamber Connectivity Section be docked and connected, ventilating joint herein is fixed especially by bolt flange coupling structure and corresponding cover board and is filled
Match.
In other embodiments, welding point can also be installed additional on the cylinder gas chamber of the busbar of three-phase point, connection can be passed through
Connecting bolt by welding point it is corresponding with the ventilating joint in gas density detecting device connection.
Claims (6)
1. a kind of Cubicle Gas-Insulated Switchgear gas density detecting device connects including being used for corresponding and three-phase gas chamber
Logical monitoring gas circuit, monitoring gas circuit are equipped with density monitor, it is characterised in that：Three-phase gas chamber string is corresponded in the monitoring gas circuit
It connects there are three ventilating joint, the gas chamber Connectivity Section connected with corresponding phase gas chamber is respectively provided on each ventilating joint, respectively ventilation
On-off valve is respectively equipped on the gas chamber Connectivity Section of connector；The ventilating joint is equipped with what is connected with the gas chamber Connectivity Section
Gas circuit Connectivity Section, monitoring gas circuit include the ventilation pipeline section of connection corresponding with the gas circuit Connectivity Section on the ventilating joint, are ventilating
The insulation system for the phase insulation for being used to implement three-phase gas chamber is equipped between pipeline section and corresponding gas circuit Connectivity Section；The ventilation
The corresponding end welding of pipeline section is fixed with welding point, and welding point is equipped with screw mounting hole, is installed by being installed on screw
Welding point is securely fitted on corresponding ventilating joint by the trip bolt in hole, and the insulation system is located at welding including pad and connects
Felt pad and wearing between head and ventilating joint be arranged between screw mounting hole and trip bolt with realize trip bolt with
The insulation sleeve that welding point is dielectrically separated from, felt pad are equipped with the screw perforation being docked and connected with the screw mounting hole, insulation
Set is with the axial cylinder section being installed in screw mounting hole and the turning up away from one end of ventilating joint for being arranged in axial cylinder section
Along section, it is respectively equipped with the corresponding venthole connected on the welding point and felt pad, the ventilation on welding point and felt pad
Hole connects corresponding ventilation pipeline section with the gas circuit Connectivity Section of corresponding ventilating joint.
2. gas density detecting device according to claim 1, it is characterised in that：The ventilating joint and welding point
The direction felt pad side on be respectively equipped with seal groove, correspondence is equipped with to ensure felt pad in seal groove
The sealing ring of sealing performance at the aperture of venthole both ends.
3. gas density detecting device as claimed in any of claims 1 to 2, it is characterised in that：The monitoring
One end of gas circuit is connected with erection joint, and the density monitor is docked and connected in the erection joint, in erection joint
Equipped with for install standard density relay with to the density monitor carry out calibration calibration connector.
4. a kind of Cubicle Gas-Insulated Switchgear is supervised including three-phase gas chamber and to the gas in three-phase gas chamber into line density
The gas density detection device of survey, gas density detection device include the corresponding monitoring gas circuit connected with three-phase gas chamber, monitor gas
Road is equipped with density monitor, it is characterised in that：Three-phase gas chamber concatenation is corresponded in the monitoring gas circuit there are three ventilating joint, respectively
The gas chamber Connectivity Section connected with corresponding phase gas chamber is respectively provided on ventilating joint, is divided on the gas chamber Connectivity Section of each ventilating joint
It She You not on-off valve；The ventilating joint is equipped with the gas circuit Connectivity Section connected with the gas chamber Connectivity Section, monitors gas circuit
Include the ventilation pipeline section of connection corresponding with the gas circuit Connectivity Section on the ventilating joint, connected in ventilation pipeline section with corresponding gas circuit
The insulation system for the phase insulation for being used to implement three-phase gas chamber is equipped between section；The corresponding end welding of the ventilation pipeline section is solid
Welding point is connected with, welding point is equipped with screw mounting hole, will be welded by the trip bolt being installed in screw mounting hole
Connector is securely fitted on corresponding ventilating joint, and the insulation system is located at exhausted between welding point and ventilating joint including pad
It edge pad and wears and is arranged between screw mounting hole and trip bolt to realize that trip bolt and welding point are dielectrically separated from exhausted
Edge set, felt pad are equipped with the screw perforation being docked and connected with the screw mounting hole, and insulation sleeve, which has, is installed on screw installation
Axial cylinder section in hole and the outer section that turns edge away from one end of ventilating joint for being arranged in axial cylinder section, the welding point and exhausted
Be respectively equipped with the venthole of corresponding connection on edge pad, the venthole on welding point and felt pad will ventilate accordingly pipeline section with it is right
The gas circuit Connectivity Section of ventilating joint is answered to connect.
5. Cubicle Gas-Insulated Switchgear according to claim 4, it is characterised in that：The ventilating joint and
Seal groove is respectively equipped on the side of the direction felt pad of welding point, correspondence is equipped with to ensure in seal groove
The sealing ring of sealing performance at the venthole both ends aperture of felt pad.
6. the Cubicle Gas-Insulated Switchgear according to any one of claim 4 to 5, it is characterised in that：It is described
One end of monitoring gas circuit be connected with erection joint, the density monitor is docked and connected in the erection joint, is installing
Connector is equipped with to install standard density relay with the calibration connector to density monitor progress calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877169.XA CN105470850B (en) | 2015-12-03 | 2015-12-03 | A kind of Cubicle Gas-Insulated Switchgear and its gas density detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877169.XA CN105470850B (en) | 2015-12-03 | 2015-12-03 | A kind of Cubicle Gas-Insulated Switchgear and its gas density detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105470850A CN105470850A (en) | 2016-04-06 |
| CN105470850B true CN105470850B (en) | 2018-06-08 |
Family
ID=55608298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877169.XA Expired - Fee Related CN105470850B (en) | 2015-12-03 | 2015-12-03 | A kind of Cubicle Gas-Insulated Switchgear and its gas density detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470850B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614355A (en) * | 1968-04-22 | 1971-10-19 | Coq Nv | Sf{11 {0 system with constant density and constant pressure differential maintaining means for a high-voltage switchgear |
| CN1547298A (en) * | 2003-12-01 | 2004-11-17 | 广州白云电器设备有限公司 | An automatic sealing pipe arrangement |
| CN202049901U (en) * | 2011-02-21 | 2011-11-23 | 中国石油化工集团公司 | Disassembly-free check joint of density relay |
| CN202111408U (en) * | 2011-05-26 | 2012-01-11 | 平高集团有限公司 | Air passage connecting structure for high voltage switch equipment |
| CN203660401U (en) * | 2014-01-23 | 2014-06-18 | 山东泰开高压开关有限公司 | Oil gas bushing connection gas pipe apparatus for 220 combination electric appliance |
| CN204240052U (en) * | 2014-09-17 | 2015-04-01 | 国家电网公司 | SF 6gas inflated, exhaust gas recovery, density meter effect instrument |
| CN205282977U (en) * | 2015-12-03 | 2016-06-01 | 河南平高电气股份有限公司 | Gas -insulated metal enclosed switchgear and gas density monitoring devices thereof |
-
2015
- 2015-12-03 CN CN201510877169.XA patent/CN105470850B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614355A (en) * | 1968-04-22 | 1971-10-19 | Coq Nv | Sf{11 {0 system with constant density and constant pressure differential maintaining means for a high-voltage switchgear |
| CN1547298A (en) * | 2003-12-01 | 2004-11-17 | 广州白云电器设备有限公司 | An automatic sealing pipe arrangement |
| CN202049901U (en) * | 2011-02-21 | 2011-11-23 | 中国石油化工集团公司 | Disassembly-free check joint of density relay |
| CN202111408U (en) * | 2011-05-26 | 2012-01-11 | 平高集团有限公司 | Air passage connecting structure for high voltage switch equipment |
| CN203660401U (en) * | 2014-01-23 | 2014-06-18 | 山东泰开高压开关有限公司 | Oil gas bushing connection gas pipe apparatus for 220 combination electric appliance |
| CN204240052U (en) * | 2014-09-17 | 2015-04-01 | 国家电网公司 | SF 6gas inflated, exhaust gas recovery, density meter effect instrument |
| CN205282977U (en) * | 2015-12-03 | 2016-06-01 | 河南平高电气股份有限公司 | Gas -insulated metal enclosed switchgear and gas density monitoring devices thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105470850A (en) | 2016-04-06 |
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