CN104391156A - All-optical fiber current transformer integrated with isolation circuit breaker - Google Patents
All-optical fiber current transformer integrated with isolation circuit breaker Download PDFInfo
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- CN104391156A CN104391156A CN201410643107.8A CN201410643107A CN104391156A CN 104391156 A CN104391156 A CN 104391156A CN 201410643107 A CN201410643107 A CN 201410643107A CN 104391156 A CN104391156 A CN 104391156A
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- gold utensil
- flange
- isolation circuit
- circuit breakers
- fiber current
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- 238000002955 isolation Methods 0.000 title claims abstract description 85
- 239000013307 optical fiber Substances 0.000 title abstract description 14
- 239000012212 insulator Substances 0.000 claims abstract description 47
- 239000010931 gold Substances 0.000 claims description 167
- 229910052737 gold Inorganic materials 0.000 claims description 167
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 164
- 238000009434 installation Methods 0.000 claims description 55
- 239000000835 fiber Substances 0.000 claims description 53
- 210000004907 gland Anatomy 0.000 claims description 41
- 238000009413 insulation Methods 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The invention relates to an all-optical fiber current transformer integrated with an isolation circuit breaker. The all-optical fiber current transformer comprises a primary side sensing unit, a fitting, a suspension insulator and a T-shaped flange, wherein the primary side sensing unit is arranged inside the fitting; the fitting is of an annular structure and the bottom of the fitting is fixedly arranged at one end of the suspension insulator; the outer side surface of the arm, perpendicular to the central axis of the arm, of the T-shaped flange is fixedly connected with the flange of the isolation circuit breaker; the arm, where the central axis is located, of the T-shaped flange is connected with a high-voltage bus and penetrates through the annular structure of the fitting; the back of the annular structure of the fitting is fixedly arranged on the inner side surface of the arm, perpendicular to the central axis, of the T-shaped flange. The all-optical fiber current transformer integrated with the isolation circuit breaker realizes the integration of the isolation circuit breaker and the all-optical fiber current transformer, and is capable of conforming to the integration and intelligence requirements of a new generation intelligent substation.
Description
Technical field
The present invention relates to current transformer technical field, particularly a kind of all-fiber current transformator of integrated isolation circuit breakers.
Background technology
Current sensor/mutual inductor is the visual plant of relay protection and electric energy metrical in electric system; be used for measuring the size of current in transmission; and the size of current measured is sent to surveying instrument and protective relaying device, for the equipment such as metering and protection provide current signal.Safety, the stable operation of the long-time stability of current transformer, reliability and security and electric system are closely related.Along with electric system is to Large Copacity, UHV (ultra-high voltage) and extra-high voltage future development, more and more higher to the requirement of power equipment miniaturization, intellectuality and high reliability.Traditional electromagnetic current transducer increases due to the voltage of system, causes the insulation system complexity of electromagnetic current transducer mutual inductor, volume increases, high expensive; Also there is unvanquishable difficulty in some principles in traditional electromagnetic current transducer simultaneously, and e.g., ferroresonance, magnetic saturation, band limiting etc., run in voltage levels and there is potential safety hazard, be difficult to the demand for development meeting electric system.Therefore, carry out alternative traditional detection means in the urgent need to new measuring method, and above problem can be overcome based on the all-fiber current transformator of Faraday effect, therefore apply very extensive in electric system.
Isolation circuit breakers (Disconnecting Circuit Breaker; DCB) be high-voltage switch electric appliance disconnector function and cut-out function combined, directly can complete the function that traditional disconnector buffer circuit and isolating switch in high-tension switch gear closed, and carried and cut-off the electric current under normal loop condition.Isolation circuit breakers in conventional art application and the connected mode of all-fiber current transformator are as shown in Figure 1, both are non-integral connection, as can be seen from Figure 1, between isolation circuit breakers 1 and all-fiber current transformator 2 be separated by a segment distance realized by bus 3 both be interconnected, the bus 3 causing two ends therebetween to connect is unsettled and unsettled distance is longer; And the insulator being arranged on the all-fiber current transformator on mounting bracket 4 is thick column support type insulator 5, the column support type insulator 5 of mainly playing a supporting role is heavier and floor area is larger, in-site installation difficulty is large, cost is high, does not meet that New Generation of Intelligent transformer station is integrated, the requirement of economized.
Summary of the invention
The isolation circuit breakers that the present invention is directed in conventional art is connected with all-fiber current transformator to apply and there is the bulky and installation and maintenance problem causing not meeting intelligent substation and require such as difficult, a kind of all-fiber current transformator of integrated isolation circuit breakers is provided, isolation circuit breakers can be realized and all-fiber current transformator is integrated in one, adaptation New Generation of Intelligent transformer station is integrated, intelligent requirements, and has the advantage that installation is simple, floor area is less and cost-saving.
Technical scheme of the present invention is as follows:
A kind of all-fiber current transformator of integrated isolation circuit breakers, it is characterized in that, comprise primary side sensing unit, gold utensil, suspended insulator and T-flange, described primary side sensing unit is arranged at gold utensil inside, described gold utensil adopts ring texture and bottom is fixedly installed on one end of suspended insulator, the lateral surface of arm orthogonal with its center axis of described T-flange is fixedly connected with the flange of isolation circuit breakers, the central axis place arm of described T-flange passes from the ring texture of gold utensil and the central axis place arm of described T-flange connects high voltage bus, the loop configuration back side of described gold utensil is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.
Described gold utensil comprises gold utensil housing, gold utensil gland and insulation dottle pin, described gold utensil housing has the annular space of the penetrating accommodation primary side sensing unit in side, described gold utensil gland has the annular lid-like corresponding with the penetrating side of the annular space of gold utensil housing, described gold utensil gland is arranged on the penetrating side of gold utensil housing and the annular lid structural cover of gold utensil gland after mounting lives the annular space of gold utensil housing, and described insulation dottle pin is arranged between the inner ring of gold utensil gland and gold utensil housing; The central axis place arm of described T-flange is through the hollow structure inside the inner ring of described gold utensil housing and gold utensil gland, described gold utensil housing bottom is fixedly installed on one end of suspended insulator, and the back side of the annular space of described gold utensil housing is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.
Described insulation dottle pin is cirque structure part, and the edge of described insulation dottle pin is with boss.
The described T-flange arm orthogonal with central axis is disc-shaped structure part, described disc-shaped structure part circumferentially arranges isolation circuit breakers mounting hole and preformed hole successively at equal intervals, adopt the flange through the T-flange mounting screw fixed installation isolation circuit breakers of isolation circuit breakers mounting hole and T-flange, docked with the flange of isolation circuit breakers to realize T-flange through preformed hole by the mounting screw of the flange of isolation circuit breakers.
Arm orthogonal with central axis in described T-flange is arranged installation hole, adopt the installation screw fixed installation gold utensil housing through installation hole and T-flange, described T-flange and gold utensil housing equipotential.
Described gold utensil housing adopts installation screw to be fixedly mounted on suspended insulator flange, and the coupling part of described gold utensil housing and suspended insulator flange adopts the sealing of O RunddichtringO.
Described gold utensil housing and gold utensil gland adopt installation screw fix and arrange screw insulation sleeve, and it is outside that described screw insulation sleeve is fixedly installed on installation screw, and installation screw and gold utensil gland separate by described screw insulation sleeve.
Described gold utensil housing and gold utensil gland are provided with corresponding O RunddichtringO groove, and described O RunddichtringO groove arranges O RunddichtringO, adopts O RunddichtringO to seal between gold utensil housing and gold utensil gland.
The other end of described suspended insulator is fixedly installed on base of mutual inductor, and described base of mutual inductor is fixedly installed on mounting bracket.
Described mounting bracket is column support type structure and is uprightly fixedly installed on the ground; Or described mounting bracket is oblique angle type structure and oblique pull suspended insulator being fixedly installed on the control box support of isolation circuit breakers.
Technique effect of the present invention is as follows:
The present invention relates to a kind of all-fiber current transformator of integrated isolation circuit breakers, comprise primary side sensing unit, gold utensil, suspended insulator and T-flange, gold utensil adopts ring texture and bottom to be fixedly installed on one end of suspended insulator, the lateral surface of arm orthogonal with its center axis of T-flange is fixedly connected with the flange of isolation circuit breakers, the central axis place arm of T-flange passes from the ring texture of gold utensil, and the loop configuration back side of gold utensil is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.By arranging the unique texture of gold utensil and T-flange, T-flange arm is passed from the ring texture of gold utensil, because this arm connects high voltage bus, therefore form the high voltage magnetic field affecting primary side sensing unit, T-flange plays guide functions, the interior lateral surface of another arm of T-flange respectively with the Flange joint of gold utensil and isolation circuit breakers, compact conformation, realizes the all-fiber current transformator integrated with isolation circuit breakers.The all-fiber current transformator isolation circuit breakers solved in conventional art of this integrated isolation circuit breakers is connected with all-fiber current transformator to apply and exists bulky and installation and maintenance are difficult and high in cost of production causes not meeting the problem that intelligent substation requires, the integrative installation technology manufacture of disconnector, isolating switch and mutual inductor can be realized, replace in transformer station and all-fiber current transformator and isolation circuit breakers are set independently, save floor area and manpower and materials investment; The all-fiber current transformator of integrated isolation circuit breakers can eliminate transient current or voltage by the isolation circuit breakers synchronous on-off time, realizes the Based Intelligent Control cut-offfing or close and intelligent arc extinguishing, reduces the impact to transformer substation system, improve the quality of power supply; Can adapt to that New Generation of Intelligent transformer station is integrated, intelligent requirements, can expand further realize all-fiber current transformator, Deep integrating between isolation circuit breakers and other intelligent assemblies merges, and on-line monitoring is carried out to plant machinery characteristic, improves equipment dependability and practicality.
The all-fiber current transformator gold utensil of the integrated isolation circuit breakers that the present invention relates to; comprise gold utensil gland, gold utensil housing and insulation dottle pin; gold utensil housing forms the specific annular space holding primary side sensing unit; this annular space is covered after being installed by the gold utensil gland structurally matched; delicate structure; make gold utensil except being the installation carrier of primary side sensing unit, also play the effect of the protection primary side sensing units such as rainproof, dust-proof and electrostatic screening.Installing insulating dottle pin between gold utensil gland and the inner ring of gold utensil housing, can prevent the appearance of electric current circulation, improves the security performance of operation of power networks.
In arm orthogonal with central axis in T-flange lateral surface respectively with the Flange joint of gold utensil housing and isolation circuit breakers, preferably by this arm, isolation circuit breakers mounting hole is set, preformed hole and installation hole, be fixedly connected with the flange of isolation circuit breakers to realize T-flange through isolation circuit breakers mounting hole by T-flange mounting screw, preformed hole is passed by the mounting screw of the flange of isolation circuit breakers, T-flange and isolation circuit breakers is made to be abutting joint, this abutting joint does not affect the mounting screw on the flange of isolation circuit breakers, therefore do not have the sealing of damage containment isolating switch, the mounting screw of the flange of isolation circuit breakers realizes slitless connection through preformed hole, avoid between T-flange and isolation circuit breakers and occur that gap causes realizing the problem of T-flange guide functions.Adopt the installation screw fixed installation gold utensil housing and T-flange through installation hole, T-flange and gold utensil equipotential, can ensure that electric current is not by gold utensil like this, avoids electric current and flow through gold utensil and easily cause that mutual inductor measures, the problem of shielding failure.
Insulation dottle pin is set to cirque structure part, and arrange insulation dottle pin edge with boss, the water resistance of gold utensil entirety can be improved further.Gold utensil housing adopts installation screw to be fixedly mounted on suspended insulator flange, and the coupling part of gold utensil and suspended insulator flange adopts the sealing of O RunddichtringO, in order to avoid steam enters the pre-buried optical fiber in corrosion suspended insulator.Gold utensil housing and gold utensil gland are provided with corresponding O RunddichtringO groove, be used for mounting O-shaped O-ring seal, O RunddichtringO is adopted to seal between gold utensil housing and gold utensil gland, can effectively play waterproof and dustproof effect, simultaneously O RunddichtringO has ageing-resistant, etch-proof feature thus improve the reliability of whole all-fiber current transformator.Insulation dottle pin between gold utensil gland and gold utensil housing and screw insulation sleeve all can play the effect cutting off circulation, otherwise the light deflection angle of primary side sensing unit there will be the accuracy of deviation and influential system and then brings hidden danger for the safe operation of electrical network.The hardware fitting structure of above-mentioned preferred structure is exquisite; And consider the shortcoming of the aspect such as electrostatic screening, water proof and dust proof, improve the safety and reliability of gold utensil and even whole all-fiber current transformator largely.
Accompanying drawing explanation
Fig. 1 is the isolation circuit breakers of conventional art and the syndeton schematic diagram of all-fiber current transformator.
Fig. 2 a and Fig. 2 b is the structural representation of the all-fiber current transformator of the integrated isolated isolating switch of the present invention, and wherein, Fig. 2 a is column support type; Fig. 2 b is cable-stayed type.
Fig. 3 a and Fig. 3 b is respectively right view and the front elevation of the all-fiber current transformator of the present invention shown in Fig. 2 a.
Fig. 4 a and Fig. 4 b is respectively left view and the front elevation of T-flange of the present invention.
Fig. 5 is the integrated partial enlargement structural representation of isolation circuit breakers and all-fiber current transformator.
Fig. 6 is the cutting plane structural representation of the gold utensil of all-fiber current transformator.
In figure, each label lists as follows:
1-isolation circuit breakers; 2-all-fiber current transformator; 3-bus; 4-mounting bracket; 5-column support type insulator; 6-bus installation end;
21-gold utensil; 22-primary side sensing unit; 23-T type flange; 24-suspended insulator; 25-base of mutual inductor; 26-T type flange mounting screw; 27-preformed hole; 28-isolation circuit breakers mounting hole; 29-installation hole;
210-gold utensil housing; 211-the one O RunddichtringO; 212-gold utensil gland; 213-sensitive optical fibre ring; 214-optical fiber; 215-the 2nd O RunddichtringO; 216-installation screw; 217-screw insulation sleeve; 218-insulate dottle pin; 219-the 3rd O RunddichtringO.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described.
The present invention relates to a kind of all-fiber current transformator of integrated isolated isolating switch, its structural representation as shown in Figure 2 a and 2 b, the all-fiber current transformator 2 of integrated isolation circuit breakers 1, comprise primary side sensing unit 22, gold utensil 21, suspended insulator 24 and T-flange 23, it is inner that primary side sensing unit 22 is arranged at gold utensil 21, gold utensil 21 adopts ring texture and bottom is fixedly installed on one end of suspended insulator 24, the lateral surface of arm (vertical arm of T-flange 23 left end as shown in Figure 2 a and 2 b) orthogonal with its center axis of T-flange 23 is fixedly connected with the flange (flange of isolation circuit breakers 1 is arranged on the side of isolation circuit breakers arc-chutes) of isolation circuit breakers 1, the central axis place arm (horizontal arm of T-flange 23 right-hand member as shown in Figure 2 a and 2 b) of T-flange 23 passes from the ring texture of gold utensil 21 and the central axis place arm of T-flange 23 connects high voltage bus (not shown in Fig. 2 a and Fig. 2 b), the loop configuration back side of gold utensil 21 is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange 23.Wherein, T-flange 23 is installation carriers of the gold utensil 21 of all-fiber current transformator 2, also be the installation carrier of high voltage bus simultaneously, by arranging the unique texture of gold utensil 21 and T-flange 23, T-flange 23 arm is passed from the ring texture of gold utensil, because this arm connects high voltage bus, therefore form the high voltage magnetic field affecting primary side sensing unit, T-flange 23 plays guide functions, the interior lateral surface of another arm of T-flange 23 respectively with the Flange joint of gold utensil 21 and isolation circuit breakers 1, compact conformation, realize the all-fiber current transformator integrated with isolation circuit breakers, suspended insulator 24 can be not passive thin straight insulator, and mounting bracket 4 mainly plays fixed support effect, and mounting bracket 4 also uprightly can be fixedly installed on the ground for column support type structure, as shown in Figure 2 a, or mounting bracket 4 can be fixedly installed on the control box support of isolation circuit breakers 1 for oblique angle type structure and oblique pull suspended insulator 24, as shown in Figure 2 b, oblique angle type structure installment support 4 while be fixedly connected with suspended insulator 24, the control box of oblique pull suspended insulator 24 to isolation circuit breakers 1, the another side of oblique angle type structure installment support 4 is fixedly attached on the control box support of isolation circuit breakers 1.Preferably, the other end of suspended insulator 24 can be fixedly installed on base of mutual inductor 25, base of mutual inductor 25 is fixedly installed on mounting bracket 4 again, as shown in Figure 2 a, this installation arranges the load-bearing that can reduce suspended insulator 24 to greatest extent, improves the serviceable life of all-fiber current transformator 2.The all-fiber current transformator of the integrated isolated isolating switch of this structure, the isolation circuit breakers solved in conventional art is connected with all-fiber current transformator to apply and exists bulky and installation and maintenance are difficult and high in cost of production causes not meeting the problem that intelligent substation requires, the integrative installation technology manufacture of disconnector, isolating switch and mutual inductor can be realized, replace in transformer station and all-fiber current transformator and isolation circuit breakers are set independently, save floor area and manpower and materials investment; Can adapt to that New Generation of Intelligent transformer station is integrated, intelligent requirements, can expand further realize all-fiber current transformator, Deep integrating between isolation circuit breakers and other intelligent assemblies merges, and on-line monitoring is carried out to plant machinery characteristic, improves equipment dependability and practicality.
Fig. 3 a and Fig. 3 b is respectively right view and the front elevation of the all-fiber current transformator of the present invention shown in Fig. 2, as shown in Figure 3 a and Figure 3 b shows, all-fiber current transformator 2 comprises primary side sensing unit (not shown in Fig. 3 a and Fig. 3 b), gold utensil 21, suspended insulator 24 and T-flange (not shown in Fig. 3 a and Fig. 3 b), it is inner that primary side sensing unit is arranged at gold utensil 21, gold utensil 21 adopts ring texture and bottom is fixedly installed on one end of suspended insulator 24, the other end of suspended insulator 24 is preferably fixedly installed on base of mutual inductor 25, base of mutual inductor 25 is fixedly installed on mounting bracket 4 again.In addition, preferably the ring texture outside of gold utensil 21 can also arrange polarity mark (P1 as shown in Figure 3 a), and wherein, polarity mark P1 represents the direction that electric current flows into.Further, the installation direction of column support type all-fiber current transformator can be seen intuitively by arranging polarity mark.
Fig. 4 a and Fig. 4 b is left view and the front elevation of T-flange of the present invention, as shown in fig. 4 a, T-flange 23 arm orthogonal with central axis is preferably set to disc-shaped structure part, the nearly outer of the collar plate shape structural member of T-flange 23 circumferentially arranges isolation circuit breakers mounting hole 28 and preformed hole 27 in interval, adopt the flange through the T-flange mounting screw fixed installation isolation circuit breakers of isolation circuit breakers mounting hole 28 and T-flange, and the mounting screw of the flange of isolation circuit breakers realizes the slitless connection of the flange of T-flange 23 and isolation circuit breakers through preformed hole 27, to avoid leaving gap between T-flange 23 and isolation circuit breakers flange, cause the diversion function destroying T-flange 23, arrange the face of T-flange 23 to fit completely with the face of the flange of isolation circuit breakers and dock, delivered current is carried out with this, the collar plate shape structural member of T-flange 23 near in circumferentially on to be equidistantly spaced installation hole 29, adopt installation screw fixed installation gold utensil (or perhaps the gold utensil housing in gold utensil) through installation hole 29 and T-flange 23, and ensure T-flange 23 and gold utensil (or perhaps the gold utensil housing in gold utensil) equipotential, the central axis place arm of T-flange 23 is provided with bus installation end 6 to connect high voltage bus, as shown in Figure 4 b.
Fig. 5 is the integrated partial enlargement structural representation of isolation circuit breakers and all-fiber current transformator, as shown in Figure 5, the lateral surface of the arm orthogonal with its center axis of T-flange 23 is fixedly connected with the flange of isolation circuit breakers 1, the central axis place arm of T-flange 23 passes from the ring texture of gold utensil 21, and the loop configuration back side of gold utensil 21 is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange 23.T-flange 23 and isolation circuit breakers 1 do not adopt the mounting screw that the flange of isolation circuit breakers has been installed to be fixedly connected with, to avoid the sealing of damage containment isolating switch 1, but adopt T-flange mounting screw 26 to be fixedly mounted by the flange of isolation circuit breakers mounting hole 28 (as shown in fig. 4 a) with isolation circuit breakers, and the mounting screw flange of isolation circuit breakers being fixed the flange of isolation circuit breakers and isolation circuit breakers from preformed hole 27 (as shown in fig. 4 a) through realizing slitless connection, to avoid leaving between T-flange 23 and the flange of isolation circuit breakers the diversion function that gap causes destroying T-flange 23, simultaneously, T-flange 23 also adopts installation screw 216 by installation hole 29 (as shown in fig. 4 a) fixed installation gold utensil 21 (or perhaps the gold utensil housing in gold utensil), and ensure T-flange 23 and gold utensil 21 (i.e. gold utensil housing) equipotential, namely obstructed excess current on gold utensil 21 is ensured, with the disabler of the defencive function inefficacy and all-fiber current transformator that prevent gold utensil 21.
Fig. 6 is the cutting plane structural representation of the gold utensil of all-fiber current transformator, as shown in Figure 6, gold utensil 21 preferably includes gold utensil housing 210, gold utensil gland 212 and insulation dottle pin 218, gold utensil housing 210 has the annular space of the penetrating accommodation primary side sensing unit in side 22 (comprising sensitive optical fibre ring 213 and optical fiber 214), gold utensil gland 212 has the annular lid-like corresponding with the penetrating side of the annular space of gold utensil housing 210, gold utensil gland 212 is arranged on the penetrating side of gold utensil housing 210 and the annular lid structural cover of gold utensil gland 212 after mounting lives the annular space of gold utensil housing 210, with the precision preventing electric field circulation from occurring affecting primary side sensing unit 22 between the inner ring that insulation dottle pin 218 is arranged on gold utensil gland 212 and gold utensil housing 210, insulation dottle pin 218 is preferably cirque structure part, can select ageing-resistant, anticorrosion, can the shaping material of machining, and at its cirque structure part edge, boss can be set to strengthen the water resistance of gold utensil entirety, the central axis place arm of T-flange is through the hollow structure inside the inner ring of gold utensil housing 210 and gold utensil gland 212, be fixedly installed on one end of suspended insulator bottom gold utensil housing 210, the back side of the annular space of gold utensil housing 210 is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.Gold utensil housing 210 and gold utensil gland 212 are provided with screw hole, installation screw 216 is adopted to fix and screw insulation sleeve 217 is set, it is outside that screw insulation sleeve 217 is fixedly installed on installation screw 216, installation screw 216 and gold utensil gland 212 separate by screw insulation sleeve 217, effectively avoid failure of insulation to form circulation on gold utensil to play buffer action.Insulation dottle pin 218 between gold utensil gland 212 and gold utensil housing 210 and screw insulation sleeve 217 all can play the effect cutting off circulation, otherwise the light deflection angle of primary side sensing unit 22 there will be the accuracy of deviation and influential system and then brings hidden danger for the safe operation of electrical network.Gold utensil housing 210 and gold utensil gland 212 are provided with corresponding O RunddichtringO groove, at O RunddichtringO groove, O RunddichtringO is set to realize the sealing of gold utensil housing 210 and gold utensil gland 212, as the O RunddichtringO groove at gold utensil housing 210 arranges an O RunddichtringO 211, at the O RunddichtringO groove of gold utensil gland 212, the 2nd O RunddichtringO 215 is set, simultaneously, gold utensil housing 210 can be fixedly mounted on suspended insulator flange by installation screw, the coupling part of gold utensil housing 210 and suspended insulator flange adopts the 3rd O RunddichtringO 219 to seal, to play water-proof function, avoid steam to enter in suspended insulator corroding the pre-buried optical fiber in suspended insulator, wherein, one O RunddichtringO 211, and O RunddichtringO 215 and the 3rd O RunddichtringO 219 can be selected ageing-resistant, etch-proof material, effectively strengthen functions of waterproof and dustproof thus the reliability of raising gold utensil.The hardware fitting structure of this structure is exquisite, small in volume; under the prerequisite of N number of primary side sensing unit (quantity of N is determined according to application places usually) is placed in satisfied inside; play the effect of the protection primary side sensing units such as rainproof, dust-proof and electrostatic screening; improve the safety and reliability of gold utensil largely, improve the security performance of operation of power networks further.
The preferred installation operation of the all-fiber current transformator of integrated isolation circuit breakers of the present invention is as follows: be first arranged on by primary side sensing unit in the annular space of gold utensil housing, gold utensil housing is arranged on suspended insulator flange, then the optical fiber of the pre-buried optical fiber in suspended insulator and primary side sensing unit is carried out welding, to protect in the annular space after welding, optical fiber fusion welding point and slack being coiled back again gold utensil housing; Mounting O-shaped O-ring seal and insulation dottle pin on gold utensil housing, O RunddichtringO is arranged in the O RunddichtringO groove of gold utensil gland, fitting gland makes it cover the annular space of gold utensil housing, load screw insulation sleeve, installation screw one by one pretension, be tightened to torque spanner setting value, achieve and primary side sensing unit, gold utensil and suspended insulator be assembled into one.Be arranged on the flange of isolation circuit breakers by T-flange again, by installation in T-flange, be arranged on mounting bracket by the bottom of suspended insulator, high voltage bus is connected to T-flange.The all-fiber current transformator entirety of integrated isolation circuit breakers of the present invention is lighter, can be cost-saving and this kind of structure effectively can reduce floor area, realizes compact plant manufacture, facilitates in-site installation.
It should be pointed out that the above embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can modify to the invention or equivalent replacement; in a word, all do not depart from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (10)
1. the all-fiber current transformator of an integrated isolation circuit breakers, it is characterized in that, comprise primary side sensing unit, gold utensil, suspended insulator and T-flange, described primary side sensing unit is arranged at gold utensil inside, described gold utensil adopts ring texture and bottom is fixedly installed on one end of suspended insulator, the lateral surface of arm orthogonal with its center axis of described T-flange is fixedly connected with the flange of isolation circuit breakers, the central axis place arm of described T-flange passes from the ring texture of gold utensil and the central axis place arm of described T-flange connects high voltage bus, the loop configuration back side of described gold utensil is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.
2. column support type all-fiber current transformator according to claim 1, it is characterized in that, described gold utensil comprises gold utensil housing, gold utensil gland and insulation dottle pin, described gold utensil housing has the annular space of the penetrating accommodation primary side sensing unit in side, described gold utensil gland has the annular lid-like corresponding with the penetrating side of the annular space of gold utensil housing, described gold utensil gland is arranged on the penetrating side of gold utensil housing and the annular lid structural cover of gold utensil gland after mounting lives the annular space of gold utensil housing, described insulation dottle pin is arranged between the inner ring of gold utensil gland and gold utensil housing, the central axis place arm of described T-flange is through the hollow structure inside the inner ring of described gold utensil housing and gold utensil gland, described gold utensil housing bottom is fixedly installed on one end of suspended insulator, and the back side of the annular space of described gold utensil housing is fixedly installed on the medial surface of the arm orthogonal with central axis of T-flange.
3. column support type all-fiber current transformator according to claim 2, is characterized in that, described insulation dottle pin is cirque structure part, and the edge of described insulation dottle pin is with boss.
4. column support type all-fiber current transformator according to claim 1 and 2, it is characterized in that, the described T-flange arm orthogonal with central axis is disc-shaped structure part, described disc-shaped structure part circumferentially arranges isolation circuit breakers mounting hole and preformed hole successively at equal intervals, adopt the flange through the T-flange mounting screw fixed installation isolation circuit breakers of isolation circuit breakers mounting hole and T-flange, docked with the flange of isolation circuit breakers to realize T-flange through preformed hole by the mounting screw of the flange of isolation circuit breakers.
5. column support type all-fiber current transformator according to claim 2, it is characterized in that, arm orthogonal with central axis in described T-flange is arranged installation hole, adopt the installation screw fixed installation gold utensil housing through installation hole and T-flange, described T-flange and gold utensil housing equipotential.
6. column support type all-fiber current transformator according to claim 2, it is characterized in that, described gold utensil housing adopts installation screw to be fixedly mounted on suspended insulator flange, and the coupling part of described gold utensil housing and suspended insulator flange adopts the sealing of O RunddichtringO.
7. column support type all-fiber current transformator according to claim 2, it is characterized in that, described gold utensil housing and gold utensil gland adopt installation screw fix and arrange screw insulation sleeve, it is outside that described screw insulation sleeve is fixedly installed on installation screw, and installation screw and gold utensil gland separate by described screw insulation sleeve.
8. column support type all-fiber current transformator according to claim 2, it is characterized in that, described gold utensil housing and gold utensil gland are provided with corresponding O RunddichtringO groove, and described O RunddichtringO groove arranges O RunddichtringO, adopts O RunddichtringO to seal between gold utensil housing and gold utensil gland.
9. column support type all-fiber current transformator according to claim 1, is characterized in that, the other end of described suspended insulator is fixedly installed on base of mutual inductor, and described base of mutual inductor is fixedly installed on mounting bracket.
10. column support type all-fiber current transformator according to claim 9, is characterized in that, described mounting bracket is column support type structure and is uprightly fixedly installed on the ground; Or described mounting bracket is oblique angle type structure and oblique pull suspended insulator being fixedly installed on the control box support of isolation circuit breakers.
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| CN201410643107.8A CN104391156B (en) | 2014-11-07 | 2014-11-07 | A kind of all-fiber current transformator of integrated isolation circuit breakers |
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| CN201410643107.8A CN104391156B (en) | 2014-11-07 | 2014-11-07 | A kind of all-fiber current transformator of integrated isolation circuit breakers |
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| CN104391156B CN104391156B (en) | 2017-11-21 |
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