CN112152099A - Ring main unit and using method - Google Patents
Ring main unit and using method Download PDFInfo
- Publication number
- CN112152099A CN112152099A CN202010820034.0A CN202010820034A CN112152099A CN 112152099 A CN112152099 A CN 112152099A CN 202010820034 A CN202010820034 A CN 202010820034A CN 112152099 A CN112152099 A CN 112152099A
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- Prior art keywords
- main unit
- ring main
- cabinet body
- contact
- load switch
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000003068 static effect Effects 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 7
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 description 12
- 230000005611 electricity Effects 0.000 description 8
- 229910018503 SF6 Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 206010014357 Electric shock Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/22—Selection of fluids for arc-extinguishing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
- H01H33/52—Interlocking mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Abstract
The invention discloses a ring main unit and a use method thereof, wherein the ring main unit comprises a cabinet body; the circuit breaking device connected with the cabinet body comprises a load switch and a protection component; the isolating switch is arranged on the cabinet body; the circuit breaking device, the protection component and the isolating switch are connected into a passage. The cabinet body is provided with a circuit breaking device, an isolating switch and the circuit breaking device, wherein the load switch can break the load current of a line and extinguish electric arcs generated when the load current is broken, and the arranged protection component can play a role of breaking the short-circuit current, so that the safety of the line is fully guaranteed; and the isolating switch that adds can be when overhauing, with the isolator disconnection, increases the security of circuit, reduces the injury that electric current caused the human body. The circuit breaking device and the isolating switch are matched for use, so that the ring main unit can be used in a low-voltage circuit and a high-voltage circuit, and the ring main unit is stronger in adaptability.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to a ring main unit and a using method thereof.
Background
The ring main unit is a power supply device which is a group of transmission and distribution electrical equipment arranged in a metal or nonmetal insulating cabinet body.
When the ring main unit is used, because the ring main unit passes through higher voltage and larger current, electric arc is generated when a switch of the ring main unit is disconnected, the electric arc can possibly cause fire disasters and also threaten personal safety, and when a circuit is in short circuit, the current in the ring main unit is suddenly increased, so that the fire disasters are more easily caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a ring main unit which can extinguish electric arcs and play a role in short circuit protection.
The invention further provides a using method of the ring main unit.
According to a first aspect embodiment of the invention, a ring main unit comprises a cabinet body; the circuit breaking device is connected with the cabinet body and comprises a load switch and a protection component; the isolating switch is arranged on the cabinet body; the circuit breaking device, the protection component and the isolating switch are connected into a passage.
The ring main unit according to the embodiment of the invention at least has the following beneficial effects: the cabinet body is provided with the circuit breaking device, the isolating switch and the circuit breaking device, wherein the load switch can break load current of a line and extinguish electric arcs generated when the load current is broken, and the protection assembly can play a role of breaking short-circuit current, so that the safety of the line is fully guaranteed; the isolating switch is additionally arranged, so that the isolating switch can be disconnected during maintenance, the safety of a circuit is improved, and the harm of current to a human body is reduced. The circuit breaking device and the isolating switch are matched for use, so that the ring main unit can be used in a low-voltage circuit and a high-voltage circuit, and the ring main unit is stronger in adaptability.
According to some embodiments of the invention, the negative electrodeThe charge switch comprises a shell, a moving contact and a static contact, wherein the static contact is inserted into the shell, the moving contact can be close to or far away from the static contact, and SF is filled in the shell6Gas, through setting up casing, moving contact and static contact, and fill SF in the casing6Gas is convenient for recycling SF when the moving contact leaves the static contact6The gas extinguishes the arc.
According to some embodiments of the present invention, the protection assembly includes a supporting block, a first fixing element, a second fixing element and a heat fusion pipe, the first fixing element and the second fixing element are both connected to the supporting block, the first fixing element and the second fixing element are used for fixing the heat fusion pipe, the first fixing element and the second fixing element are arranged to fix the heat fusion pipe, so as to prevent the heat fusion pipe from falling off, and the supporting block is arranged to separate the heat fusion pipe from the cabinet body, so as to prevent electric leakage.
According to some embodiments of the invention, the first fixing piece and/or the second fixing piece are/is a hoop or a clamping jaw, and the hoop and the clamping jaw are fixed in a simple structure and stably.
According to a second aspect of the present invention, a method for using a ring main unit is provided, which includes the following steps:
the load switch, the protection component and the isolating switch are connected in series to form a circuit;
the cabinet body is grounded, and a lead is arranged on the cabinet body and grounded;
closing, namely closing the isolating switch, closing the load switch after confirming that the isolating switch is closed, and enabling the moving contact of the load switch to move and contact the static contact to connect a circuit;
and opening the brake, enabling the moving contact of the load switch to move and to be far away from the fixed contact, enabling the load switch to be grounded after the load switch is disconnected, and disconnecting the isolating switch after waiting for preset time.
The use method of the ring main unit according to the embodiment of the invention at least has the following beneficial effects: the electrical equipment is easy to generate static electricity, so when the ring main unit is used, a lead is externally connected to the ring main unit and is grounded, and the static electricity on the main unit body can be eliminated; meanwhile, the static electricity of the human body can be transmitted to the ground through the cabinet body, so that the harm of the static electricity is reduced; and when using the looped netowrk cabinet, wait for the predetermined time after the separating brake and can make the equivalent capacitance in the circuit discharge, convenient operation after the discharge, prevent that the equivalent capacitance in the circuit from discharging and causing the injury to the human body, the interference is overhauld.
According to some embodiments of the invention, the load switch is provided with a grounding contact, in the opening step, when the moving contact moves away from the fixed contact, the moving contact approaches the grounding contact, and the grounding contact is arranged to increase the safety of the line, guide the current in the line to the ground and reduce the risk of electric shock.
According to some embodiments of the invention, the cabinet further comprises a cabinet door, the cabinet door is hinged to the cabinet body, a fixture block is arranged on the cabinet door, the fixture block is slidably connected with the cabinet door through an elastic member, a bayonet corresponding to the fixture block is arranged on the cabinet body, the fixture block can be clamped into the bayonet, an ejector block is slidably connected on the cabinet body, the ejector block is used for pushing the fixture block to move along the axial direction of the fixture block, the cabinet door is convenient to close, and the fixture block and the bayonet are simple in structure and convenient to use.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an environmental protection cabinet according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is a schematic structural diagram of a cabinet door of the environmental protection cabinet according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a fixture block portion of a cabinet door of the environmental protection cabinet according to an embodiment of the invention.
The circuit breaker comprises a cabinet body 100, a circuit breaker 200, a load switch 210, a protection assembly 220, an isolating switch 300, a shell 211, a movable contact 212, a fixed contact 213, a supporting block 221, a first fixing piece 222, a second fixing piece 223, a hot melt pipe 224, a grounding contact 215, a cabinet door 150, a fixture block 151, an elastic piece 152, a bayonet 160 and a top block 170.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 5, a ring main unit includes a main body 100; the circuit breaking device 200 connected with the cabinet 100 comprises a load switch 210 and a protection component 220; an isolation switch 300 disposed on the cabinet 100; the circuit breaking device 200, the protection component 220 and the isolating switch 300 are connected to form a passage. The cabinet 100 is provided with the circuit breaker 200 and the isolating switch 300, and the circuit breaker 200 is arranged, wherein the load switch 210 can break the load current of the line and extinguish the arc generated when the load current is broken, and the protection component 220 can play a role of breaking the short-circuit current, so that the safety of the line can be fully guaranteed; the added isolating switch 300 can disconnect the isolating switch 300 during maintenance, thereby increasing the safety of the line and reducing the harm of current to human body. The circuit breaking device 200 and the isolating switch 300 are matched for use, so that the ring main unit can be used in a low-voltage circuit and a high-voltage circuit, and the ring main unit is stronger in adaptability.
In some embodiments, the circuit interrupting device 200 may be a vacuum circuit breaker or an air switch.
In some embodiments, the load switch 210 includes a housing 211, a movable contact 212 and a fixed contact 213, the fixed contact 213 is inserted into the housing 211, the movable contact 212 can be close to or far from the fixed contact 213, and the housing 211 contains SF6Gas is filled in the housing 211 by arranging the housing 211, the movable contacts 212 and the stationary contacts 2136Gas, convenient for recycling SF when the moving contact 212 leaves the fixed contact 2136The gas extinguishes the arc.
In some embodiments, the movable contact 212 is connected to the housing 211 through the piston 214, the housing 211 is provided with the air inlet 211a and the air outlet 211b, when the movable contact 212 is far away from the stationary contact 213, the piston also moves along with the moving, so that air is sucked into the housing 211 to blow out an arc, and this way, automatic arc extinguishing can be realized, that is, when the movable contact 212 is far away from the stationary contact 213, arc extinguishing can be automatically performed, introduction of other power and energy sources is reduced, and meanwhile, the volume of the load switch 210 can be reduced, which is convenient for installation and layout in the cabinet body 100.
In some embodiments, the inlet 211a and the outletThe air port 211b is connected with a one-way valve 211c, the one-way valve 211c at the air inlet 211a can only allow air to enter the shell 211, the one-way valve 211c at the air outlet 211b can only allow air to be discharged from the shell 211, the one-way valve 211c is arranged to enable the inner cavity of the shell 211 to be isolated from the outside in a normal state, and SF (sulfur hexafluoride) is conveniently filled in the inner cavity of the shell 2116Gas, so that two arc extinguishing modes can be realized, namely air blowing out of electric arc and utilization of SF6And (6) quenching the arc by gas.
In some embodiments, the protection assembly 220 includes a supporting block 221, a first fixing element 222, a second fixing element 223 and a heat fusion pipe 224, the first fixing element 222 and the second fixing element 223 are both connected to the supporting block 221, the first fixing element 222 and the second fixing element 223 are used for fixing the heat fusion pipe 224, the first fixing element 222 and the second fixing element 223 are arranged to fix the heat fusion pipe 224 and prevent the heat fusion pipe 224 from falling off, and the supporting block 221 is arranged to separate the heat fusion pipe 224 from the cabinet 100 and prevent electric leakage. It should be noted that the thermal melting pipe 224 includes a heat-resistant pipe, and a thermal melting sheet is disposed in the heat-resistant pipe, and both ends of the thermal melting sheet are connected to the circuit. It can be understood that the first fixing member 222 and the second fixing member 223 are used to fix the heat fusion pipe 224, and prevent the hot melt sheet in the molten state in the heat fusion pipe 224 from dripping into the cabinet 100 to contaminate the cabinet 100.
In some embodiments, the protection component 220 may also be a fuse, the fuse includes a base made of ceramic, two connection terminals are disposed on the base, a resistance wire is connected between the two connection terminals, a groove is further disposed on the base, and a middle portion of the resistance wire is disposed in the groove.
In some embodiments, the cabinet 100 is provided with an air inlet 110 and an air outlet 120, the air inlet 110 is disposed at an upper portion of the cabinet 100, the air outlet 120 is disposed at a lower portion of the cabinet, the air outlet 120 is connected with a negative pressure fan 140, and the negative pressure fan 140 is configured to discharge air in the cabinet 100 outwards. The air inlet 110 and the air outlet 120 are arranged to mainly cool the inside of the ring main unit, and the wire insulation skin is easy to age under the condition of high temperature inside the ring main unit, so that the use of the ring main unit is influenced.
In some embodiments, the dust screen 130 is connected to the air inlet 110, and the dust screen 130 is configured to block dust in the air from entering the ring main unit.
In some embodiments, the air inlet 110 is further connected with a cooler 111, the cooler 111 is connected with a drain pipe 112, the cooler 111 enables the air entering the ring main unit to be cooler, so as to conveniently take away heat in the ring main unit, and it can be understood that the drain pipe 112 is used for discharging condensed water.
In some embodiments, a dryer 400 is connected within the cabinet 100, and the dryer 400 is used to dry the interior of the cabinet 100, preventing moisture from causing short circuits within the cabinet 100.
In some embodiments, the first fixing member 222 and/or the second fixing member 223 are/is a hoop or a clamping jaw, and the hoop and the clamping jaw are fixed in a simple structure and are stably fixed.
According to a second aspect of the present invention, a method for using a ring main unit is provided, which includes the following steps:
the load switch 210, the protection component 220 and the isolating switch 300 are connected in series to form a path;
a lead is arranged on the cabinet 100 and grounded;
closing, namely closing the isolating switch 300, closing the load switch 210 after confirming that the isolating switch 300 is closed, and enabling the moving contact 212 of the load switch 210 to move and contact the static contact 213 to connect a circuit;
and (3) opening the brake, moving the moving contact 212 of the load switch 210 to be away from the fixed contact 213, grounding the load switch 210 after the load switch 210 is disconnected, and disconnecting the isolating switch 300 after waiting for a preset time.
The electrical equipment is easy to generate static electricity, so when the ring main unit is used, a wire is externally connected to the ring main unit and is grounded, so that the static electricity on the cabinet body 100 can be eliminated; meanwhile, the static electricity of the human body can be transmitted to the ground through the cabinet body 100, so that the harm of the static electricity is reduced; and when using the looped netowrk cabinet, wait for the predetermined time after the separating brake and can make the equivalent capacitance in the circuit discharge, convenient operation after the discharge is finished prevents that the equivalent capacitance in the circuit from discharging and causing the injury to the human body, interference maintenance. It will be appreciated that during the opening step, the movable contact 212 moves to move the piston 214, and the movement of the piston 214 draws air into the housing 211 to blow out the arc.
In some embodiments, the load switch 210 is provided with the grounding contact 215, and in the opening step, when the movable contact 212 moves away from the fixed contact 213, the movable contact 212 approaches the grounding contact 215, and the grounding contact 215 is provided to increase the safety of the line, so that the current in the line can be led to the ground, and the risk of electric shock is reduced.
In some embodiments, the cabinet further includes a cabinet door 150, the cabinet door 150 is hinged to the cabinet body 100, a fixture block 151 is disposed on the cabinet door 150, the fixture block 151 is slidably connected to the cabinet door 150 through an elastic member 152, a bayonet 160 corresponding to the fixture block 151 is disposed on the cabinet body 100, the fixture block 151 can be clamped into the bayonet 160, an ejector block 170 is slidably connected to the cabinet body 100, the ejector block 170 is used for pushing the fixture block 151 to move along an axial direction of the fixture block 151, the cabinet door 150 is convenient to close, and the fixture block 151 and the bayonet 160 are simple in structure and.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. A ring main unit, comprising:
a cabinet (100);
the circuit breaking device (200) is connected with the cabinet body (100) and comprises a load switch (210) and a protection component (220);
the isolating switch (300) is arranged on the cabinet body (100);
the circuit breaking device (200), the protection component (220) and the isolating switch (300) are connected to form a passage.
2. The ring main unit according to claim 1, wherein: the load switch (210) comprises a shell (211), a moving contact (212) and a fixed contact (213), wherein the fixed contact (213) is inserted into the shell (211), and the moving contact (212) can be close to or far away from the shell (211)The static contact (213) and the shell (211) are filled with SF6A gas.
3. The ring main unit according to claim 2, wherein: the protection component (220) comprises a supporting block (221), a first fixing piece (222), a second fixing piece (223) and a hot melting pipe (224), wherein the first fixing piece (222) and the second fixing piece (223) are connected to the supporting block (221), and the first fixing piece (222) and the second fixing piece (223) are used for fixing the hot melting pipe (224).
4. The ring main unit according to claim 3, wherein: the first fixing member (222) and/or the second fixing member (223) are hoops or clamping jaws.
5. A using method of a ring main unit is applied to the ring main unit of claim 4, and is characterized by comprising the following steps:
the load switch (210), the protection component (220) and the isolating switch (300) are connected in series to form a path through wiring;
the cabinet body (100) is grounded, and a lead is arranged on the cabinet body (100) and grounded;
closing, namely closing the isolating switch (300), closing the load switch (210) after confirming that the isolating switch (300) is closed, moving the moving contact (212) of the load switch (210) and contacting the fixed contact (213), and switching on a circuit;
and (2) opening, wherein the movable contact (212) of the load switch (210) moves away from the fixed contact (213), the load switch (210) is grounded after the load switch (210) is disconnected, and the isolating switch (300) is disconnected after the preset time.
6. The use method of the ring main unit according to claim 5, wherein: the load switch (210) is provided with a grounding contact (215), and in the opening step, when the moving contact (212) moves away from the fixed contact (213), the moving contact (212) approaches the grounding contact (215).
7. The use method of the ring main unit according to claim 6, wherein: still include cabinet door (150), cabinet door (150) are articulated the cabinet body (100), be provided with fixture block (151) on cabinet door (150), fixture block (151) are through elastic component (152) sliding connection cabinet door (150), be provided with on the cabinet body (100) with bayonet socket (160) that fixture block (151) correspond, fixture block (151) can be gone into bayonet socket (160), sliding connection has kicking block (170) on the cabinet body (100), kicking block (170) are used for pushing up fixture block (151) are followed the axial displacement of fixture block (151).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820034.0A CN112152099A (en) | 2020-08-14 | 2020-08-14 | Ring main unit and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820034.0A CN112152099A (en) | 2020-08-14 | 2020-08-14 | Ring main unit and using method |
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| Publication Number | Publication Date |
|---|---|
| CN112152099A true CN112152099A (en) | 2020-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010820034.0A Pending CN112152099A (en) | 2020-08-14 | 2020-08-14 | Ring main unit and using method |
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| CN (1) | CN112152099A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224051A1 (en) * | 1985-10-30 | 1987-06-03 | Alsthom | Sulphur hexafluoride station for load switching |
| CN2836279Y (en) * | 2005-07-14 | 2006-11-08 | 杭州电器开关有限公司 | 12KV indoor AC high-voltage sulfur hexafluoride ring network switchgear |
| CN104505732A (en) * | 2014-11-18 | 2015-04-08 | 江苏辰宇电气有限公司 | Moisture-proof ring main unit |
| CN204289253U (en) * | 2014-12-03 | 2015-04-22 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc control device thereof |
| CN204720344U (en) * | 2015-06-16 | 2015-10-21 | 董佃平 | The fixed five anti-interlocking operation mechanisms of a kind of QH1 type mesohigh |
| CN106449233A (en) * | 2016-11-16 | 2017-02-22 | 协成科技股份有限公司 | Triaxial interlocking device of high-voltage load switch and operation method of triaxial interlocking device of high-voltage load switch |
| CN209001382U (en) * | 2018-12-06 | 2019-06-18 | 合肥德源智能科技有限公司 | A kind of self-locking matches electric control switchgear |
-
2020
- 2020-08-14 CN CN202010820034.0A patent/CN112152099A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224051A1 (en) * | 1985-10-30 | 1987-06-03 | Alsthom | Sulphur hexafluoride station for load switching |
| CN2836279Y (en) * | 2005-07-14 | 2006-11-08 | 杭州电器开关有限公司 | 12KV indoor AC high-voltage sulfur hexafluoride ring network switchgear |
| CN104505732A (en) * | 2014-11-18 | 2015-04-08 | 江苏辰宇电气有限公司 | Moisture-proof ring main unit |
| CN204289253U (en) * | 2014-12-03 | 2015-04-22 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc control device thereof |
| CN204720344U (en) * | 2015-06-16 | 2015-10-21 | 董佃平 | The fixed five anti-interlocking operation mechanisms of a kind of QH1 type mesohigh |
| CN106449233A (en) * | 2016-11-16 | 2017-02-22 | 协成科技股份有限公司 | Triaxial interlocking device of high-voltage load switch and operation method of triaxial interlocking device of high-voltage load switch |
| CN209001382U (en) * | 2018-12-06 | 2019-06-18 | 合肥德源智能科技有限公司 | A kind of self-locking matches electric control switchgear |
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Inventor after: Li Ji Inventor after: Zhang Long Inventor before: Li Ji |
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Application publication date: 20201229 |
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