CN203300500U - Protection switching device of transformer - Google Patents
Protection switching device of transformer Download PDFInfo
- Publication number
- CN203300500U CN203300500U CN2013203173111U CN201320317311U CN203300500U CN 203300500 U CN203300500 U CN 203300500U CN 2013203173111 U CN2013203173111 U CN 2013203173111U CN 201320317311 U CN201320317311 U CN 201320317311U CN 203300500 U CN203300500 U CN 203300500U
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- working arm
- upper working
- lower working
- handle
- frame
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Abstract
The utility model provides a protection switching device of a transformer. The device comprises a frame, silver contacts, and a contactor. Two vertical guide rails are fixedly and parallelly disposed in the middle of the frame, and an upper working arm and a lower working arm moving up and down are disposed between the guide rails. Two sides of a top end of a handle on an outer side of the frame are connected with the top of the frame through hinges. Two sides of the top end of the upper working arm are respectively hinged with a connecting rod, and tops of the connecting rods are hinged with two sides of the handle. The top end of the upper working arm is connected with a bottom end of a reset spring which is fixedly disposed on the top of the frame. An upper end of a pressure spring is disposed inside the upper working arm. The contactor is fixedly disposed on the lower working arm. A side inner wall of the frame is fixedly provided with a spacing stop pin. An end of the spacing stop pin is disposed through the guide rail. Two ends of the lower working arm are respectively provided with a linkage rod whose top end is clamped on the upper working arm. The device is simple in structure, obvious in switching on and switching off, safe in operation, and is reliable. Through operation of the handle, combined operation of the upper working arm and the lower working arm realize on-off state of the device, thereby satisfying breaking state of a power circuit and realizing safe power supply.
Description
Technical field
The utility model belongs to the transformer technology field, is specifically related to the protection switch device of transformer low voltage outgoing line side (0.4KV).
Background technology
The outdoor transformer guard box is a kind of power distribution equipment with overload of loss of phase protection for the protection of the rural power grids transformer.It mainly adopts the in-built breaker of plastic casing of case as electric power pipage control device, and the characteristics of utilizing breaker of plastic casing are for the protection of transformer.Its design is mainly inserted breaker of plastic casing in outdoor stainless steel casing, utilize traditional butterfly porcelain vase architectural characteristic, adopt the copper nut electrically conducting manner to realize input and the output of three-phase electricity, outer behaviour's circuit breaker adopts the mode of operation of direct screening handle, door is provided with the indicator light of warning function, when breaking down tripping operation and maintenance, the operation people, by the state of indicator light, implements artificial high-altitude far away apart from the hook operation.
The tranformer protection case uses and operates the certain defect of existence in service long-term:
1, product hangs the electric pole top overhead on 2-3 rice platform; when tripping operation or separating brake; because adopting circuit breaker as the circuit switching device, guard box does not have obvious cut-off point at handoff procedure, and the people faces upward head and observes the electriferous state that whether is in that is difficult to the equipment of observing.
Although 2 are provided with sign display device, when sunny, be difficult to see clearly the state of indicator light, for overhauling or move to observe, bring uncertain judgement.
3, the operation of circuit breaker is directly plug-in with metallic operation part and circuit breaker plastic handle, usually because misoperation causes its plastic handle, damages.
4, in summer, more than the temperature inside the box of outdoor transformer guard box is in 40 degree, because the making characteristic of breaker of plastic casing can lower because thermal effect often make the output current of circuit breaker.
5, this equipment lacks the telemechanical Based Intelligent Control.
Above five point defects due to the outdoor transformer guard box, tend to affect grid transmission power, and the erroneous judgement of bringing maintenance operation for simultaneously the rural power grids electrician is disconnected.
In order to solve this difficult problem; this patent is designed to have the switchgear that human eye intuitively has obvious divide-shut brake cut-off point by original internal type breaker of plastic casing; a kind of mechanical linkage switching device of utility model substitutes breaker of plastic casing, and set up the combination of electrical control function safe power supply, novel transformer protective device that reliability is strong be provided.
The utility model content
The utility model is realized safe power supply in order to address the deficiencies of the prior art, provide a kind of transformer low voltage that is arranged on to survey transformer and low pressure thereof are surveyed to the switching device that load carries out integrated protection.
The utility model is achieved through the following technical solutions:
A kind of protection switch device of transformer, comprise framework, be located at the silver contact of base of frame, and the contactor that matches with silver contact, middle parallel two vertical guide rails that are installed with of described framework, parallel upper working arm and the lower working arm that moves up and down along guide rail that be provided with in the middle of described two guide rails, the described framework outside is provided with handle, and both sides, described handle top all are connected with frame roof by hinge; Each hinged connecting rod of both sides, described upper working arm top, the top of described connecting rod and described handle both sides are hinged, and the top of upper working arm is connected with the bottom of the back-moving spring that is installed in frame roof; The top of described lower working arm is provided with Compress Spring, and the upper end of described Compress Spring is arranged on described upper working arm inside; Described contactor is fixedly arranged on lower working arm; Described frame side inwall is installed with spacing shelves pin, and an end of described spacing backing pin is located on the guide rail that is positioned at lower working arm bottom; The two ends of described lower working arm respectively set firmly a gangbar, and the top of described gangbar is buckled on described upper working arm.
Further, the two ends of described upper working arm, lower working arm are slidably connected by U-shaped guide groove and described guide rail respectively.
Described back-moving spring and Compress Spring are two and are symmetrical set.
In order to make this device better effects if, described Compress Spring is nitrogen spring.
Described spacing shelves pin inboard is provided with roller, and described roller and described upper working arm are affixed.
The bottom of described framework is provided with shaft type interlock latch hook, and the bottom of described handle is provided with the dead bolt that matches with described shaft type interlock latch hook.
Further, in order in the processes such as maintenance, manually to close this device, the bottom face of described framework is provided with manual draw ring outward, and the top of described manual draw ring is connected with shaft type interlock latch hook.
In order to make when overload, overcurrent or the fault such as overheated appear in circuit, the performance of can adequately protect this device and transformer, the bottom of described framework is provided with electromagnetic switch, and described electromagnetic switch and the described shaft type latch hook that links is electrically connected to.
The open and close action of the handle of the utility model by being located at framework one side, realize that by the combined operation of upper and lower working arm this device is in respectively the open-close state, thereby meet the disjunction state of power circuit, realizes safe power supply.
Two rectangle vertical guide rails are arranged in the framework of this device, and upper working arm is connected by the U-shaped guide groove vertical guide rail parallel with two respectively with two ends of lower working arm, and upper working arm and lower working arm can slide up and down along guide rail.The upper end of handle both sides is hinged on framework, can carry out the opening and closing motion; Handle is hinged by the upper surface of connecting rod and upper working arm, and the open and close movement of handle drives upper working arm and moves up and down on guide rail.
In the utility model, contactor is mounted on lower working arm, and it can carry out the up and down rapid movement with lower working arm; The upper end of back-moving spring is connected to the upper surface that the framework upper and lower end is connected to working arm, when separating brake, plays reset role; The main body of nitrogen spring is arranged in working arm, and the push rod of its lower end withstands on the top of lower working arm, at upper working arm, moves downward and lower working arm when being subject to spacing shelves pin and stopping, nitrogen spring is compressed; Descending when upper working arm continuation, due to the impetus of roller, make spacing shelves pin lose the effect that stops lower working arm, nitrogen spring moment bullet promotes lower working arm and moves downward; This switch is "on" position.Because the end of gangbar is fixed on lower working arm, its upper end buckle is pressed on working arm, and when upper working arm moment upwards lifted, gangbar is working arm under the moment pull-up also, drives contactor and silver contact moment disengagement, and this switch is gate-dividing state.
The course of work is divided into closing operation and sub-switching operation, and is specific as follows:
1, closing operation:
Pull handle downwards, drive and its hinged connecting rod, connecting rod promotes to move downward with its hinged upper working arm, together with roller that upper working arm connects, moves downward; Simultaneously the back-moving spring that is connected with upper working arm is stretched downwards.
When upper working arm moves downward, due to the effect of spacing shelves pin, block lower working arm and move downward and keep static, and the bottom push rod that is arranged on two nitrogen springs of working arm inside is subject to stopping of lower working arm and compressed; Gangbar top and upper working arm break away from and inoperative.
When roller goes downwards to the bottom of spacing shelves pin, promote spacing shelves pin to move laterally and leave guide rail, spacing backing pin and lose barrier effect, lower working arm moment under the elastic force effect of nitrogen spring moves down, the contactor moment that is arranged on lower working arm contacts with the silver contact of below, and this switching device closes a floodgate.Moment gangbar while this moment moves down, and the hook on its top is buckled in the enterprising horizontal reset of working arm again, thereby makes upper and lower working arm be in linkage status.
After moving position to, be in vertical position, the dead bolt on it and shaft type interlock latch hook hook jail, make this switching device be in stable "on" position.
2, sub-switching operation
In maintenance process as want separating brake, pull down and start draw ring, make shaft type interlock latch hook and dead bolt disengaging, upper working arm is subject to the elastic force effect of back-moving spring, and moment is upspring, due to the gangbar effect, lower working arm pops up simultaneously, and contactor separates with silver contact, and circuit disconnects.On upper working arm, move and to upper thrust of connecting rod, handle also be lifted together, this device is returned to gate-dividing state.
In addition, when circuit broke down, as overload, overcurrent, overheated etc., electromagnetic switch started, and promotes shaft type blocking lock hook to break away from dead bolt, ditto equally carries out work, and upper working arm moment upsprings, and makes the circuit disconnection, realizes separating brake.
The electrical control of this device and existing outdoor transformer guard box are similar; controller, DC power supply, signal input part, state output end etc. are arranged; sampled signal is isolated into controller and is carried out the data processing through photoelectricity; not only supply current is provided and reports to the police or the switch trip instruction; can also provide and report to the police or the output of switch trip contact the phase shortage of supply network, overvoltage/under-voltage etc., output signal be reported to the police simultaneously.This device is optional wireless receiving module also, by the note form, notifies the related personnel.
So this device has following beneficial effect:
1, the places such as the applicable distribution transformer of switching device of the present utility model, box-type substation, raising power supply quality, minimizing electricity consumption complaint are had to good guarantee, at the open and-shut mode of power circuit, solved the unconspicuous defect of disjunction electric shock of use circuit breaker existence.
2, this apparatus structure is succinct, divide-shut brake obvious, handling safety, reliable, open and close action by handle, combined operation by upper and lower working arm realizes that this device is in respectively the open-close state, thereby meets the disjunction state of power circuit, realizes safe power supply.
3, this device is provided with manual draw ring, by manual draw ring, can make this device separating brake, has improved fail safe and operability in the processes such as maintenance.
4, because the bottom of framework is provided with the electromagnetic switch that is electrically connected to shaft type interlock latch hook, when overload, overcurrent or the fault such as overheated appear in circuit, the performance of can adequately protect this device and transformer.
5, because this device is symmetrical arranged two back-moving springs and nitrogen spring, for this device minute, closing a floodgate provides the dynamic action of moment, guaranteed this device and the bottom of described handle is provided with the dead bolt that matches with shaft type interlock latch hook, after moving position to, handle is in vertical position, dead bolt on it and shaft type interlock latch hook hook jail, make this switching device be in stable "on" position, guarantee the operational reliability of this device.
The accompanying drawing explanation
Below with accompanying drawing and embodiment, carry out a step explanation the utility model.
Fig. 1 is front view of the present utility model;
End view when Fig. 2 is the utility model "on" position;
Fig. 3 is the end view of the utility model while opening a sluice gate state.
In figure: 1-framework, 2-handle, 3-connecting rod, the 4-silver contact, the 5-gangbar, working arm, 7-contactor under 6-, the upper working arm of 8-, 9-nitrogen spring, 10-back-moving spring, 11-guide rail, the spacing shelves pin of 12-, 13-roller, 14-shaft type interlock latch hook, 15-electromagnetic switch, the manual draw ring of 16-, 17-dead bolt.
Embodiment:
As shown in Figure 1, Figure 2, Figure 3 shows; a kind of protection switch device of transformer; comprise framework 1; be located at the silver contact 4 of framework 1 bottom; and the contactor 7 that matches with silver contact 4; middle parallel two vertical guide rails 11 that are installed with of described framework 1, the parallel upper working arm 8 and lower working arm 6 that moves up and down along guide rail that be provided with in the middle of two guide rails 11, the two ends of upper working arm 8, lower working arm 6 are slidably connected by U-shaped guide groove and guide rail 11 respectively.Described framework 1 outside is provided with handle 2, and described handle 2 both sides, top all are connected with framework 1 top by hinge; Each hinged connecting rod 3 of described upper working arm 8 both sides, top, the top of described connecting rod 3 is hinged with handle 2 both sides, and the top of upper working arm 8 is connected with the bottom of the back-moving spring 10 that is installed in framework 1 top; The top of described lower working arm 6 is provided with nitrogen spring 9, and its upper end is arranged on working arm 8 inside; Described contactor 7 is fixedly arranged on lower working arm 6; Described framework 1 side inwall is installed with spacing shelves pin 12, and spacing shelves pin 12 inboards are provided with roller 13, and roller 13 is affixed with upper working arm 8, and an end of spacing backing pin 12 is located on the guide rail 11 that is positioned at lower working arm 6 bottoms; The two ends of described lower working arm 6 respectively set firmly a gangbar 5, and the top of described gangbar 5 is buckled on working arm 8, and upper working arm 8 is realized to the interlock effect with lower working arm 6.Described back-moving spring 10 is two with nitrogen spring 9 and is symmetrical set, and the bottom of framework 1 is provided with shaft type interlock latch hook 14 and electromagnetic switch 15, and electromagnetic switch 15 is electrically connected to shaft type interlock latch hook 14; The bottom of handle 2 is provided with the dead bolt 17 that matches with shaft type interlock latch hook 14; The bottom face of framework 1 is provided with manual draw ring 16 outward, and the top of described manual draw ring 16 and shaft type interlock latch hook 14 are affixed.
End view while being as shown in Figure 2 the utility model "on" position, will shake hands 2 from open mode, to pull down, and be in vertical position after moving position to, and the dead bolt 17 on it hooks jail with shaft type interlock latch hook 14, makes this switching device be in stable "on" position.Namely, in the 2 downward drawing process of shaking hands, drive and its hinged connecting rod 3, connecting rod 3 promotes to move downward along guide rail 11 with its hinged upper working arm 8, and the back-moving spring that the while handle is connected with upper working arm 8 stretches downwards.Effect due to spacing shelves pin, stop that lower working arm moves downward and keeps static, and the bottom of nitrogen spring is subject to stopping of lower working arm and compressed; When upper working arm 8 goes downwards to certain position, because the roller effect makes limit, to leave guide rail and lose barrier effect, lower working arm moment under the elastic force effect of nitrogen spring moves down, and contactor moment is contacted, this switching device combined floodgate with the silver contact of below.
The end view of the utility model while opening a sluice gate state as shown in Figure 3, pull down and start draw ring 16, shaft type interlock latch hook 14 and dead bolt 17 are broken away from, upper working arm 8 is subject to the elastic force effect of back-moving spring, moment is upspring, and due to the gangbar effect, lower working arm pops up simultaneously, contactor separates with silver contact, and circuit disconnects.On upper working arm 8, move and give connecting rod 3 one upper thrusts, making to shake hands 2 also to be lifted together, this device is returned to gate-dividing state.
In addition, when circuit broke down, as overload, overcurrent, overheated etc., electromagnetic switch 15 started, and promotes shaft type blocking lock hook 14 to break away from dead bolt 17, ditto equally carries out work, and 8 moments of upper working arm upspring, and circuit is disconnected, and realize separating brake.
These embodiment only should in no way limit scope of the present utility model be used to the utility model is described.In addition, after having read content described in the utility model, those skilled in the art make change or the modification of the various equivalent form of values to the utility model, and these equivalent form of values belong to claims limited range of the application equally.
Claims (8)
1. the protection switch device of a transformer, comprise framework, be located at the silver contact of base of frame, and the contactor that matches with silver contact, it is characterized in that: middle parallel two vertical guide rails that are installed with of described framework, parallel upper working arm and the lower working arm that moves up and down along guide rail that be provided with in the middle of described two guide rails, the described framework outside is provided with handle, and both sides, described handle top all are connected with frame roof by hinge; Each hinged connecting rod of both sides, described upper working arm top, the top of described connecting rod and described handle both sides are hinged, and the top of upper working arm is connected with the bottom of the back-moving spring that is installed in frame roof; The top of described lower working arm is provided with Compress Spring, and the upper end of described Compress Spring is arranged on described upper working arm inside; Described contactor is fixedly arranged on lower working arm; Described frame side inwall is installed with spacing shelves pin, and an end of described spacing backing pin is located on the guide rail that is positioned at lower working arm bottom; The two ends of described lower working arm respectively set firmly a gangbar, and the top of described gangbar is buckled on described upper working arm.
2. the protection switch device of transformer according to claim 1, it is characterized in that: the two ends of described upper working arm, lower working arm are slidably connected by U-shaped guide groove and described guide rail respectively.
3. the protection switch device of transformer according to claim 1, it is characterized in that: described back-moving spring and Compress Spring are two and are symmetrical set.
4. the protection switch device of according to claim 1 or 3 described transformers, it is characterized in that: described Compress Spring is nitrogen spring.
5. the protection switch device of transformer according to claim 1 is characterized in that: described spacing shelves pin inboard is provided with roller, and described roller and described upper working arm are affixed.
6. the protection switch device of transformer according to claim 1 is characterized in that: the bottom of described framework is provided with shaft type interlock latch hook, and the bottom of described handle is provided with the dead bolt that matches with described shaft type interlock latch hook.
7. the protection switch device of transformer according to claim 6, it is characterized in that: the bottom face of described framework is provided with manual draw ring outward, and the top of described manual draw ring is connected with shaft type interlock latch hook.
8. the protection switch device of transformer according to claim 6, it is characterized in that: the bottom of described framework is provided with electromagnetic switch, and described electromagnetic switch is electrically connected to described shaft type interlock latch hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203173111U CN203300500U (en) | 2013-06-04 | 2013-06-04 | Protection switching device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203173111U CN203300500U (en) | 2013-06-04 | 2013-06-04 | Protection switching device of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300500U true CN203300500U (en) | 2013-11-20 |
Family
ID=49576495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203173111U Withdrawn - After Issue CN203300500U (en) | 2013-06-04 | 2013-06-04 | Protection switching device of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280350A (en) * | 2013-06-04 | 2013-09-04 | 合肥正日电气有限公司 | Protective switching device of transformer |
| CN111227437A (en) * | 2020-01-16 | 2020-06-05 | 浙江工贸职业技术学院 | Shoe and boot last removing device |
-
2013
- 2013-06-04 CN CN2013203173111U patent/CN203300500U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280350A (en) * | 2013-06-04 | 2013-09-04 | 合肥正日电气有限公司 | Protective switching device of transformer |
| CN103280350B (en) * | 2013-06-04 | 2014-12-31 | 合肥正日电气有限公司 | Protective switching device of transformer |
| CN111227437A (en) * | 2020-01-16 | 2020-06-05 | 浙江工贸职业技术学院 | Shoe and boot last removing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131120 Effective date of abandoning: 20141231 |
|
| RGAV | Abandon patent right to avoid regrant |