CN205429555U - Load switch - fuse combined electrical apparatus list phase module - Google Patents
Load switch - fuse combined electrical apparatus list phase module Download PDFInfo
- Publication number
- CN205429555U CN205429555U CN201520776889.2U CN201520776889U CN205429555U CN 205429555 U CN205429555 U CN 205429555U CN 201520776889 U CN201520776889 U CN 201520776889U CN 205429555 U CN205429555 U CN 205429555U
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- Prior art keywords
- switch
- fuse
- load switch
- contact
- insulation shell
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- 239000004020 conductor Substances 0.000 claims abstract description 34
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 57
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000002560 therapeutic procedure Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 230000004927 fusion Effects 0.000 description 17
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 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
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- Circuit Breakers (AREA)
Abstract
The utility model discloses a load switch - fuse combined electrical apparatus list phase module. It includes insulating housing, and load switch is installed on insulating housing's upper portion, mid -mounting fuse, lower part installation earthing switch, load switch includes static contact and moving contact, and the middle section of moving contact sets up the load switch guide pin bushing, and the rear portion of moving contact has a grounding contact, and insulating housing's upper portion rear end is provided with load switch operating device, a conductor is connected between the rear end of fuse and the load switch guide pin bushing, is connected through no. Two conductors between the front end of fuse and the earthing switch, and the fuse rear end is provided with the impinger, and the impinger passes through interlock and is connected with load switch operating device, earthing switch includes earthing switch guide pin bushing, no. Three conductors and earthing switch operating device. After adopting foretell structure, compact structure, insulating properties is good, connects through the internal conductor between each switch module, connect reliable, simple to operate, the action reliability has obtained great improvement.
Description
Technical field
This utility model relates to a kind of switch module, the switch-fuse combination single-phase module of a kind of band high speed grounding switch, belongs to high-voltage switch gear technical field of electric equipment.
Background technology
The general capacity of electric network terminal user transformers in power system is little; self-protection ability is poor; depend on High-Voltage Electrical Appliances it is protected; High-Voltage Electrical Appliances protected mode mainly has two kinds: one breaker protection, another kind of switch-fuse combination (abbreviation combined electrical apparatus).
Substantial amounts of short-circuit test proves, when there is short trouble inside oil-filled transformer, it is necessary in 20ms internal cutting off fault, can protect the safe and sound of transformator.From the point of view of your device of open circuit, the full break of chopper is made up of relay protection movement time, the intrinsic opening time of chopper, arc time three part, and three's sum is commonly greater than 60ms, it is clear that the protection of transformator is not proved effective by chopper.For combined electrical apparatus; limiting fuse can fuse in 10ms and excise short trouble; fully meet action in 20ms; thus reach effectively to protect the needs of transformator; while wherein a phase first disconnects of fuse, the dropout plate of its ram installation on-load switch, on-load switch three-phase immediately simultaneously switches off; prevent Transformer Phase-deficient Operation, reach to protect the purpose of transformator.Due to switch-fuse combination dependable performance, cost is low compared with chopper, therefore the application in electrical network is widely, the alternate main employing air insulation of the fuse of combined electrical apparatus unit in early days, being connected by contact base, busbar with on-load switch, earthed switch, volume is big, takes up room big, cost is of a relatively high, and it is bigger to be affected by the external environment.
Popularization and application along with solid insulation technology, in fuse is loaded the insulating cylinder of molding in advance by solid loop-net cabinet manufacturing firm in recent years, then fuse unit and on-load switch module or high speed grounding switch are attached by special joint, decrease the impact of external environment, also decrease than original air insulation on volume simultaneously, but owing to the intermodule of combined electrical apparatus unit is all to connect by special joint, assemble more complicated, Reliability comparotive is poor, the most less desirable.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of simple in construction, miniaturization, easy for installation, good insulating, reliable switch-fuse combination single-phase module.
In order to solve above-mentioned technical problem, switch-fuse combination single-phase module of the present utility model, including insulation shell, the top of insulation shell is provided with on-load switch, the middle part of insulation shell is provided with fuse, and the bottom of insulation shell is provided with earthed switch；On-load switch includes the static contact being embedded in front end, insulation shell top and the moving contact that can coordinate with static contact and move linearly, the stage casing of described moving contact is provided with the on-load switch guide pin bushing being embedded in insulation shell, the rear portion of moving contact has the first grounding contact, and the upper rear end of insulation shell is provided with load switch operation mechanism；Fuse is arranged in the fuse chamber in the middle part of insulation shell, it is connected by being positioned at a conductor of enclosure interior between the rear end of fuse with on-load switch guide pin bushing, it is connected by being positioned at No. two conductors of enclosure interior between the front end of described fuse and earthed switch, fuse rear end is provided with ram, and ram is connected with load switch operation mechanism by interlock；Earthed switch includes that the earthed switch guide pin bushing being embedded in insulation shell, one end are positioned at No. three conductors of earthed switch guide pin bushing and are arranged on the earthing switch operating mechanism of lower front part of insulation shell.
Described moving contact is arranged in a closed cavity being filled with insulating gas, the front portion of described moving contact is provided with one can be along with the insulation spout assembly that moving contact is movable in closed cavity, and described insulation spout assembly forms an arc extinguishing nozzle with your effect of traction therapy.
The rear end of described moving contact connects an insulated tension pole, and the rear end of described insulated tension pole extend in load switch operation mechanism.
The front end of described fuse is provided with front contact seat, described front contact seat and No. two conductors and connects, and the rear end of described fuse is provided with rear contact base, described rear contact base and a conductor and connects.
The opening part of described fuse chamber is provided with insulation end socket.
The front end of described earthed switch is provided with annular seal space, is filled with insulating gas in described annular seal space, is mounted with the second grounding contact and No. four conductors extending in earthing switch operating mechanism in described annular seal space.
It is coated with conductive coating outside described insulation shell.
After using above-mentioned structure, the on-load switch fuse arranged due to upper, middle and lower portion in insulation shell and earthed switch, three-stations load switch and load switch operation mechanism thereof is made to be positioned at the top of module, fuse assembly is positioned at the centre position of module, high speed grounding switch and operating mechanism thereof are then positioned at the bottom of module, it it is phase structure between each switch module, the outer surface entirety of insulation shell is coated with conduction or semi-conducting grounded shield layer, its structure is compact to design, good insulation preformance, it is attached by inner conductor between each switch module, connect reliable, easy for installation, simultaneously, the positional precision making all parts after installation is the highest, Reliability of Microprocessor is greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model switch-fuse combination single-phase module duty；
Fig. 2 is the structural representation of this utility model switch-fuse combination single-phase module inspecting state.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, switch-fuse combination single-phase module of the present utility model is described in further detail.
As shown in the figure, switch-fuse combination single-phase module of the present utility model, the insulation shell made including epoxide resin material, the top of insulation shell is provided with on-load switch 1, the middle part of insulation shell is provided with fuse 6, and the bottom of insulation shell is provided with earthed switch 8；The moving contact 104 of club shaped structure that on-load switch 1 includes the static contact 101 being embedded in front end, insulation shell top and can coordinate with static contact and can move linearly, the stage casing of moving contact 104 be provided be embedded in insulation shell and with the on-load switch guide pin bushing 105 of moving contact conductive contact, the rear portion of moving contact 104 has the first grounding contact 106, form one on insulation shell and close chamber, first grounding contact 106 is placed in closing intracavity, and the upper rear end of insulation shell is provided with load switch operation mechanism 3；Fuse 6 is arranged in the fuse chamber 602 in the middle part of insulation shell, and the opening part of fuse chamber 602 is provided with insulation end socket 5；It is connected by being positioned at a conductor 2 of enclosure interior between the rear end of fuse 6 with on-load switch guide pin bushing 105, it is connected by being positioned at No. two conductors 9 of enclosure interior between the front end of fuse 6 with earthed switch 8, fuse 6 rear end is provided with ram 601, and ram 601 is connected with load switch operation mechanism 3 by interlock 4；Earthed switch 8 includes that the earthed switch guide pin bushing 804 being embedded in insulation shell, one end are positioned at No. three conductors 805 of earthed switch guide pin bushing 804 and are arranged on the earthing switch operating mechanism 7 of lower front part of insulation shell.
Further, described moving contact 104 is arranged in a closed cavity 103 being filled with insulating gas, the front portion of moving contact 104 is provided with one can be along with the insulation spout assembly 102 that moving contact is movable in closed cavity 103, insulation spout assembly 102 forms one and has the arc extinguishing nozzle drawing your effect of valve, making three-stations load switch is that linear type is arranged, preferably by sulfur hexafluoride gas or similar insulating gas arc extinguishing, use gas self-expanding air blowing arc quenching principle and the version of epoxy resins insulation, simple in construction, arc extinction performance is good；The rear end of moving contact 104 connects an insulated tension pole 107, and the rear end of insulated tension pole 107 extend in load switch operation mechanism 3；The front end of described fuse 6 is provided with front contact seat 605, front contact seat 605 is connected with No. two conductors 9, the rear end of fuse 6 is provided with rear contact base 603, rear contact base 603 is connected with a conductor 2, the front end of described earthed switch 8 is provided with annular seal space 803, it is filled with insulating gas in annular seal space 803, the second grounding contact 802 and No. four conductors 801 extending in earthing switch operating mechanism 7 it are mounted with in annular seal space 803, conductive coating 11 (conduction or semi-conducting grounded shield layer) it is coated with outside insulation shell, realize in product running is tangible, non-maintaining, security reliability is higher.
As shown in Figure 1, normal operating conditions for this utility model switch-fuse combination single-phase module, i.e. three-stations load switch is in combined floodgate, high speed grounding switch is in an open position, now the static contact 101 of three-stations load switch 1 and moving contact 104 and on-load switch guide pin bushing 105 realize electrically conducting, on-load switch is made to be in closing position, then by a conductor, in fuse 6, the front contact seat 603 of fusion tube connects, the rear contact base 605 of the fusion tube high speed grounding switch guide pin bushing 804 by No. two conductors with high speed grounding switch 8, No. four conductors 805 realize electrical connection；In engineering normal course of operation, switch-fuse combination single-phase module of the present utility model should be at normal operating conditions, but when circuit occurs short circuit current, manufacture allowable error due to fuse, in the fuse 6 of the wherein phase in three-phase, first the fuse within fusion tube fuses, ram 601 ejects, promoted by the action of interlock 4 load switch operation mechanism 3 trip gear action, and then drive three-phase three-station on-load switch 1 simultaneously quick acting switching-off action disengagement failure electric current.By above operation, the switch-fuse combination single-phase module of band high speed grounding switch completes its protection to rear end transformator simple and reliablely.
After completing to cut-off short circuit current; three-phase fusion tube must be replaced; therefore three-stations load switch 1 must be made to earthing position by first on-load switch operation operating mechanism 3 before changing fusion tube; then during operational grounding switch operating mechanism 7, high speed grounding switch 8 arrives closed position; make the inspecting state (as shown in Figure 2) of switch-fuse combination single-phase module; now the first grounding contact 106, moving contact 104 and the on-load switch guide pin bushing 105 of three-stations load switch 1, and a conductor and front contact seat 603 constitute the front end earth fault protection circuit of fusion tube；Second grounding contact 802 of high speed grounding switch 8, high speed grounding switch guide pin bushing 804 and No. three conductors and rear contact base 605 constitute the rear end earth fault protection circuit of fusion tube simultaneously.Now in fuse 6 before and after fusion tube end be complete ground protection, therefore can by instrument dismantle insulation end socket 5, and then in fuse chamber taking-up fusion tube be replaced.
Obviously, after replacing fusion tube terminates, high speed grounding switch 8 can be made in an open position by first operational grounding switch operating mechanism 7, then operation operating mechanism 3 makes three-stations load switch 1 arrive first open position, arrive closing position (i.e. position shown in Fig. 1) the most again, put into operation ready for switch-fuse combination single-phase module.
Designed by structure of the present utility model, the phase insulation problem of conventional combination electrical equipment is changed into Insulation Problems relatively so that Insulation Problems is easier to solve；Three-stations load switch operating mechanism can make insulated tension pole have quickly and two kinds of kinestates at a slow speed, drive mechanism therein can make insulated tension pole gun, the motor action of drive mechanism can make insulated tension pole rotational motion to linear motion at a slow speed, specifically three-stations load switch operating mechanism 3 is by driving insulated tension pole 7 to make moving contact 104 move along a straight line together with in insulating gas with insulation spout assembly 102, by with static contact 101, on-load switch guide pin bushing 105 and closing of the first grounding contact 106 divide the closing position that can form three-stations load switch 1, open position, earthing position；nullIn fuse chamber 602, there is fusion tube，Oiling semiconductive shielding layer on the inwall of fuse chamber 602，The shelf depreciation between fuse chamber 602 and fusion tube contact surface can be reduced by insulation screen，Thus improve the electric field intensity between fuse chamber 602 and fuse，Wherein there is mechanical interlocking between three-stations load switch operating mechanism and the ram of fuse and high speed grounding switch operating mechanism，After ram 601 action of fusion tube，The trip gear action of load switch operation mechanism 3 can be promoted by interlock 4，Then on-load switch can be made to carry out quick acting switching-off action，Meet the needs of engineering safety requirement，No. four conductors (conducting rod) 801 can realize the conducting between the second grounding contact 802 with No. three conductors (conducting rod) 805 under the drive of earthing switch operating mechanism 7 and separate，Three-stations load switch 1 and fuse 6 and high speed grounding switch 8 realize electrical connection by a conductor 2 and No. two 9 and reinstate poured with epoxy resin molding，The module faces surface-coated of moulding by casting has ground connection conductive shielding layer 11，Ground connection conductive shielding layer 11 can make module outer surface in zero potential，Improve the security reliability of product，Static contact 101 end of three-stations load switch 1 and No. four conductor 805 end equal conformance with standard European cable cone standard sizes of high speed grounding switch 8，It is easy to external connection.
When circuit occurs short circuit current, in fuse 6, first the fuse within fusion tube fuses, ram 601 ejects, promoted by the action of interlock 4 load switch operation mechanism 3 trip gear action, and then drive on-load switch quick acting switching-off action disengagement failure electric current；After on-load switch operates earthing position, the front end of fusion tube is connected with the first grounding contact 106 of three-stations load switch 1 by a conductor, it is achieved the ground protection of front end；Then high speed grounding switch 8 action can be made by earthed switch operation operating mechanism 7, the rear end making fusion tube realizes electrical connection by the earthing position of No. two conductors and high speed grounding switch 8, after completing these actions, can by instrument dismantle insulation end socket 5, and then in fuse chamber take out fusion tube be replaced.
Claims (7)
1. a switch-fuse combination single-phase module, it is characterized in that: include insulation shell, the top of described insulation shell is provided with on-load switch (1), the middle part of insulation shell is provided with fuse (6), and the bottom of insulation shell is provided with earthed switch (8)；Described on-load switch (1) includes the static contact (101) being embedded in front end, insulation shell top and the moving contact (104) that can coordinate with static contact and move linearly, the stage casing of described moving contact (104) is provided with the on-load switch guide pin bushing (105) being embedded in insulation shell, the rear portion of described moving contact (104) has the first grounding contact (106), and the upper rear end of described insulation shell is provided with load switch operation mechanism (3)；Described fuse (6) is arranged on the fuse chamber (602) in the middle part of insulation shell Nei, it is connected by being positioned at a conductor (2) of enclosure interior between the rear end of described fuse (6) with on-load switch guide pin bushing (105), it is connected by being positioned at No. two conductors (9) of enclosure interior between the front end of described fuse (6) with earthed switch (8), described fuse (6) rear end is provided with ram (601), and described ram (601) is connected with load switch operation mechanism (3) by interlock (4)；Described earthed switch (8) includes that the earthed switch guide pin bushing (804) being embedded in insulation shell, one end are positioned at No. three conductors (805) of earthed switch guide pin bushing (804) and are arranged on the earthing switch operating mechanism (7) of lower front part of insulation shell.
2. according to the switch-fuse combination single-phase module described in claim 1, it is characterized in that: described moving contact (104) is arranged in a closed cavity (103) being filled with insulating gas, the front portion of described moving contact (104) is provided with one can be along with the insulation spout assembly (102) that moving contact is movable in closed cavity (103), and described insulation spout assembly (102) forms an arc extinguishing nozzle with your effect of traction therapy.
3. according to the switch-fuse combination single-phase module described in claim 1 or 2, it is characterized in that: the rear end of described moving contact (104) connects an insulated tension pole (107), the rear end of described insulated tension pole (107) extend in load switch operation mechanism (3).
4. according to the switch-fuse combination single-phase module described in claim 1, it is characterized in that: the front end of described fuse (6) is provided with front contact seat (605), described front contact seat (605) is connected with No. two conductors (9), the rear end of described fuse (6) is provided with rear contact base (603), and described rear contact base (603) is connected with a conductor (2).
5. according to the switch-fuse combination single-phase module described in claim 1, it is characterised in that: the opening part of described fuse chamber (602) is provided with insulation end socket (5).
6. according to the switch-fuse combination single-phase module described in claim 1, it is characterized in that: the front end of described earthed switch (8) is provided with annular seal space (803), it is filled with insulating gas in described annular seal space (803), in described annular seal space (803), is mounted with the second grounding contact (802) and No. four conductors (801) extending in earthing switch operating mechanism (7).
7. according to the switch-fuse combination single-phase module described in claim 1, it is characterised in that: it is coated with conductive coating (11) outside described insulation shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776889.2U CN205429555U (en) | 2015-10-09 | 2015-10-09 | Load switch - fuse combined electrical apparatus list phase module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776889.2U CN205429555U (en) | 2015-10-09 | 2015-10-09 | Load switch - fuse combined electrical apparatus list phase module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205429555U true CN205429555U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520776889.2U Expired - Fee Related CN205429555U (en) | 2015-10-09 | 2015-10-09 | Load switch - fuse combined electrical apparatus list phase module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205429555U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244795A (en) * | 2015-10-09 | 2016-01-13 | 维龙（镇江）电工研究院有限公司 | Single-phase module for load switch-fuse combination unit |
| CN113284773A (en) * | 2021-05-26 | 2021-08-20 | 上海电器科学研究所（集团）有限公司 | Switch with built-in current-limiting fuse |
-
2015
- 2015-10-09 CN CN201520776889.2U patent/CN205429555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244795A (en) * | 2015-10-09 | 2016-01-13 | 维龙（镇江）电工研究院有限公司 | Single-phase module for load switch-fuse combination unit |
| CN113284773A (en) * | 2021-05-26 | 2021-08-20 | 上海电器科学研究所（集团）有限公司 | Switch with built-in current-limiting fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |
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| CF01 | Termination of patent right due to non-payment of annual fee |