CN205050770U - Single phase module of straight ejector half load switch of three stations - Google Patents

Single phase module of straight ejector half load switch of three stations Download PDF

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Publication number
CN205050770U
CN205050770U CN201520776890.5U CN201520776890U CN205050770U CN 205050770 U CN205050770 U CN 205050770U CN 201520776890 U CN201520776890 U CN 201520776890U CN 205050770 U CN205050770 U CN 205050770U
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China
Prior art keywords
working chamber
load switch
contact
moving contact
insulation
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CN201520776890.5U
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Chinese (zh)
Inventor
李鸿儒
龚晨
宋邦申
叶柏龄
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Weilong (zhenjiang) Electrical Institute Co Ltd
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Weilong (zhenjiang) Electrical Institute Co Ltd
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Abstract

The utility model discloses a take earthing switch's single phase module of straight ejector half load switch of three stations. It includes insulating housing, insulating housing has tubular structure's working chamber, the working chamber intussuseption is filled with the insulating gas, the front end of working chamber has the static contact, be provided with the moving contact in the working chamber, the well rear portion of working chamber is provided with electrically conductive cover, in epoxy resin cast of electrically conductive cover embedding connects, the joint coupling part of an epoxy resin cast joint stretches out outside the working chamber, the rear end of working chamber is provided with actuating mechanism and grounding contact, the forward -mounted of moving contact has an insulating spout subassembly, insulating spout subassembly forms an arc extinguishing nozzle, the rear end of moving contact is connected one and is eradicate along the pull rod, the rear end of insulating pull rod is stretched into in the actuating mechanism. Its advantage lies in: its simple structure is small and exquisite, simple to operate, operation are reliable, can solve the big manufacturing of high voltage load switch mould difficulty well, installs, maintains the practical problem that the degree of difficulty is big.

Description

Three station direct acting type on-load switch single-phase modules
Technical field
The utility model relates to a kind of on-load switch module, and specifically a kind of three station direct acting type on-load switch single-phase modules of switch with ground, belong to high-voltage switch gear technical field of electric equipment.
Background technology
On-load switch is a kind of switchgear with simple arc-control device, can close, carries and drop-out current under the normal running conditions of loop, and under the exceptional condition (as short circuit) of regulation, carries the switching device of abnormal current at the appointed time.In engineering actual motion, on-load switch is the main building block of middle pressure ring net complete set of equipments, and improves constantly the requirement of the looped network controller switching equipment of power supply-distribution system in electrical network along with country, and the consumption of ring main unit is increasing; The applied voltage grade of ring main unit is also more and more higher simultaneously, and particularly along with ring main unit product develops to 40.5 kilovoltage grades, in order to meet insulation property requirement, the phase insulation distance of on-load switch also becomes larger.
The three-phase integrated on-load switch casting mold volume of gas-insulated and arc extinguishing is now commercially adopted to become very large, the gas consumption of insulating gas is also very many, assembling and manufacturing process more complicated, and traditional gas insulated load switch outer surface is easily by air, dust corrosive effect, attendant need carry out periodic maintenance cleaning to outer surface, otherwise, easily cause the insulation degradation of equipment, accidents caused; Now commercially there is the on-load switch adopting epoxy resin sealing vacuum arc extinguishing chamber for loading switch, but this kind of on-load switch is limited to the structural shape of vacuum interrupter, two station requirements of combined floodgate and separating brake can only be met, if in demand fulfillment engineering operation, on-load switch possesses three station requirements of combined floodgate, separating brake, ground connection, also need matching design knife plate formula or Direct Action Type earthed switch structural shape, structure is comparatively complicated, and volume is larger.
Summary of the invention
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, volume is little, easy for installation, good insulating, three reliable station direct acting type on-load switch single-phase modules.
In order to solve the problems of the technologies described above, three station direct acting type on-load switch single-phase modules of the present utility model, comprise insulation shell, insulation shell has the working chamber of tubular construction, insulating gas is filled with in working chamber, the front end of working chamber has the fixed contact be embedded in insulation shell, be provided with in working chamber and can coordinate with fixed contact and can the moving contact of linearly movement in working chamber, the postmedian of described working chamber is provided with conductive sleeve, conductive sleeve embeds the epoxy casting joint that is positioned at working chamber, the joint-connecting portion of an epoxy casting joint stretches out outside working chamber, the grounding contact that the rear end of working chamber is provided with driving mechanism and can coordinates with moving contact, the front portion of moving contact is provided with one can along with the insulation spout assembly that moving contact is movable in working chamber, insulation spout assembly forms the arc extinguishing nozzle that has your effect of daraf(reciprocal of farad), the rear end of moving contact connects an insulated tension pole through conductive sleeve, the rear end of insulated tension pole extend in driving mechanism.
The back segment of described insulation spout assembly is arranged on moving contact, the leading portion of described insulation spout assembly forms a hollow sleeve that can be enclosed within fixed contact, the inside of described hollow sleeve forms an arcing chamber, and described arc extinguishing nozzle is the gas channel being arranged on insulation spout assembly rear portion.
The surface-coated of described insulation shell has ground shield.
A described epoxy casting joint is set to pyramidal structure, and described fixed contact is embedded in No. two epoxy casting joints, and described No. two epoxy casting joints are also set to pyramidal structure.
The front end of described moving contact is provided with an arcing contact, and described arcing contact has an arc opening that can coordinate with fixed contact.
Form annular seal space between described epoxy casting joint and driving mechanism, in described annular seal space, be filled with insulating gas.
Described insulating gas is sulfur hexafluoride gas.
The utility model has the advantage of:
Adopt straight line structure, on-load switch is arranged in one end, earthed switch is arranged in the other end, there are three station functions of combined floodgate, separating brake and ground connection, and on-load switch wherein and earthed switch function all adopt same mechanism, same insulated tension pole, same mobile contact, driving mechanism can make insulated tension pole have fast and two kinds of motion states at a slow speed, and structure is simple, and operational reliability is high; Adopt sulfur hexafluoride gas or similar insulating gas, use the version of gas self-expanding air blowing arc quenching principle and epoxy resins insulation, structure is simple, and arc extinction performance is good; The phase insulation problem of traditional on-load switch is changed into Insulation Problems relatively, Insulation Problems is more easily solved, and the consumption of insulating gas is less; The outer surface entirety of insulation shell is coated with conduction or semi-conducting grounded shield layer, what realize in product running is tangible, non-maintaining, security reliability is higher, its structure is simply small and exquisite, easy for installation, reliable, the large manufacture difficulty of voltage levels on-load switch mould can be solved well, installation, the practical problem that maintenance difficulties is large.
Accompanying drawing explanation
Fig. 1 is the utility model closing position status architecture schematic diagram;
Fig. 2 is the utility model open position status architecture schematic diagram;
Fig. 3 is the utility model earthing position status architecture schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, three station direct acting type on-load switch single-phase modules of the present utility model are described in further detail.
As shown in the figure, three station direct acting type on-load switch single-phase modules of the present utility model, comprise insulation shell, the surface-coated of insulation shell has ground shield 10, insulation shell has the working chamber 8 of tubular construction, six-component force balance gas is filled with in working chamber 8, the front end of working chamber 8 has the fixed contact 11 be embedded in insulation shell, be provided with in working chamber 8 and can coordinate with fixed contact and can the moving contact 7 of linearly movement in working chamber, moving contact 7 is made up of copper pipe, the postmedian of working chamber 8 is provided with conductive sleeve 5, conductive sleeve 5 embeds the epoxy casting joint 6 that is positioned at working chamber, specifically conductive sleeve 5 inside is welded by copper pipe and copper rod, outside is cast with epoxy resin insulation material, the joint-connecting portion of an epoxy casting joint 6 stretches out outside working chamber, annular seal space 4 is formed between an epoxy casting joint 6 and driving mechanism 1, also six-component force balance gas is filled with in annular seal space 4, the grounding contact 3 that the rear end of working chamber 8 is provided with driving mechanism 1 and can coordinates with moving contact, the front portion of moving contact 7 is provided with one can along with the insulation spout assembly that moving contact is movable in working chamber, insulation spout assembly forms the arc extinguishing nozzle that has your effect of daraf(reciprocal of farad), the front end of moving contact 7 be also welded with one high temperature resistant, the arcing contact 701 of resistance to ablation, arcing contact 701 has an arc opening that can coordinate with fixed contact 11, the rear end of moving contact 7 connects an insulated tension pole 2 through conductive sleeve, and the rear end of insulated tension pole 2 extend in driving mechanism 1, and insulated tension pole 2 can drive moving contact 7 to move in the driving of driving mechanism 1.
Wherein, insulation spout assembly 9 is by polytetrafluoroethylmaterial material thermoset forming, the back segment of insulation spout assembly 9 is arranged on moving contact 7, the leading portion of insulation spout assembly 9 forms a hollow sleeve that can be enclosed within fixed contact, the inside of hollow sleeve forms an arcing chamber, and arc extinguishing nozzle is the gas channel 901 being arranged on insulation spout assembly 9 rear portion; The joint-connecting portion of an epoxy casting joint 6 is set to pyramidal structure, fixed contact 11 is embedded in No. two epoxy casting joints 12, the joint-connecting portion of No. two epoxy casting joints 12 is also set to pyramidal structure, that is the part outside fixed contact 11 is shaping by poured with epoxy resin, conductor part in fixed contact 11 has special-shaped copper rod material to make, both can ensure current capacity requirement, also can be satisfied with the connection request of external bus.
Specific works process is as follows:
Figure 1 shows that three station linear pattern on-load switch single-phase modules of switch with ground of the present utility model are in closing position state, namely load switch contact is in combined floodgate, earthed switch is in an open position, now fixed contact 11 and moving contact 7 and conductive sleeve 5 realize electrically conducting, and an epoxy casting joint 6 and No. two epoxy castings by normal structure connect 12 and are connected with outside; When provide cut-off load current (load current can be as big as 2000A) signal time, the spring release of driving mechanism 1 inside, drive moving contact 7 fast to left movement by insulated tension pole 2, motion makes the arcing contact 701 of moving contact 7 be separated with fixed contact 11, produces electric arc in separation point position simultaneously; But due to the existence of the spout assembly 9 that insulate, the pressure of the insulating gas on the left side in device is made to increase fast, when electric arc arrives zero point, the insulating gas of the air chamber on the left side sprays from the spout (gas channel) 901 of insulation spout assembly 9, free effect is gone in realization, form insulation fracture, extinguish arcs; Under the control of driving mechanism 1, moving contact 7 and spout assembly 9 move to the open position shown in Fig. 2, and now electric current is cut-off, but grounding contact is still in an open position.So far, what three station linear pattern on-load switch single-phase modules of switch with ground completed its on-load switch cut-offs function; Ground signalling is provided when needs ground connection, moving contact 7 starts the microinching of second stage left under the motor of driving mechanism 1 drives, moving contact 7 leaves conductive sleeve 5, contact until move to grounding contact 3, earthing position as shown in Figure 3, now grounding contact 3, grounding connection row 301, moving contact 7 and conductive sleeve 5 form grounded circuit, realize electrically conducting.So far, three station linear pattern on-load switch single-phase modules of switch with ground complete the grounding function of its earthed switch, by above operation, three station linear pattern on-load switch single-phase modules of switch with ground complete three functions of combined floodgate-separating brake-ground connection that it has simple and reliablely.

Claims (7)

1. a station direct acting type on-load switch single-phase module, comprise insulation shell, described insulation shell has the working chamber (8) of tubular construction, working chamber is filled with insulating gas in (8), the front end of described working chamber (8) has the fixed contact (11) be embedded in insulation shell, be provided with in described working chamber (8) and can coordinate with fixed contact and can the moving contact (7) of linearly movement in working chamber, the postmedian of described working chamber (8) is provided with conductive sleeve (5), described conductive sleeve (5) embeds the epoxy casting joint (6) that is positioned at working chamber, the joint-connecting portion of a described epoxy casting joint (6) stretches out outside working chamber, the grounding contact (3) that the rear end of described working chamber (8) is provided with driving mechanism (1) and can coordinates with moving contact, the front portion of described moving contact (7) is provided with one can along with the insulation spout assembly that moving contact is movable in working chamber, described insulation spout assembly forms the arc extinguishing nozzle that has your effect of daraf(reciprocal of farad), the rear end of described moving contact (7) connects an insulated tension pole (2) through conductive sleeve, the rear end of described insulated tension pole (2) extend in driving mechanism (1).
2. according to three station direct acting type on-load switch single-phase modules according to claim 1, it is characterized in that: the back segment of described insulation spout assembly (9) is arranged on moving contact (7), the leading portion of described insulation spout assembly (9) forms a hollow sleeve that can be enclosed within fixed contact, the inside of described hollow sleeve forms an arcing chamber, and described arc extinguishing nozzle is for being arranged on the gas channel (901) at insulation spout assembly (9) rear portion.
3., according to three station direct acting type on-load switch single-phase modules according to claim 1, it is characterized in that: the surface-coated of described insulation shell has ground shield (10).
4. according to three station direct acting type on-load switch single-phase modules according to claim 1, it is characterized in that: a described epoxy casting joint (6) is set to pyramidal structure, described fixed contact (11) is embedded in one No. two epoxy casting joints (12), and described No. two epoxy casting joints (12) are also set to pyramidal structure.
5. according to three station direct acting type on-load switch single-phase modules according to claim 1, it is characterized in that: the front end of described moving contact (7) is provided with an arcing contact (701), described arcing contact (701) has an arc opening that can coordinate with fixed contact (11).
6., according to three station direct acting type on-load switch single-phase modules according to claim 1, it is characterized in that: form annular seal space (4) between described epoxy casting joint (6) and driving mechanism (1), described annular seal space is filled with insulating gas in (4).
7., according to three station direct acting type on-load switch single-phase modules described in claim 1 or 6, it is characterized in that: described insulating gas is sulfur hexafluoride gas.
CN201520776890.5U 2015-10-09 2015-10-09 Single phase module of straight ejector half load switch of three stations Active CN205050770U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520776890.5U CN205050770U (en) 2015-10-09 2015-10-09 Single phase module of straight ejector half load switch of three stations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520776890.5U CN205050770U (en) 2015-10-09 2015-10-09 Single phase module of straight ejector half load switch of three stations

Publications (1)

Publication Number Publication Date
CN205050770U true CN205050770U (en) 2016-02-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244223A (en) * 2015-10-09 2016-01-13 维龙(镇江)电工研究院有限公司 Three-station direct drive load switch single-phase module
CN109920691A (en) * 2017-12-04 2019-06-21 施耐德电器工业公司 Dewar bottle for electrical switchgear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244223A (en) * 2015-10-09 2016-01-13 维龙(镇江)电工研究院有限公司 Three-station direct drive load switch single-phase module
CN105244223B (en) * 2015-10-09 2018-12-04 维龙(镇江)电工研究院有限公司 Three station direct acting type on-load switch single-phase modules
CN109920691A (en) * 2017-12-04 2019-06-21 施耐德电器工业公司 Dewar bottle for electrical switchgear

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