CN208806202U - A kind of false action-proof type Buchholz relay of New Insulation Structure - Google Patents

Abstract

The utility model discloses a kind of false action-proof type Buchholz relays of New Insulation Structure, including shell and fuse, fuse includes top cover and the bracket that is fixed below top cover, light Gas Signal component and grave gas tripping component are disposed on bracket from top to bottom, junction box is provided with above top cover, there are four binding posts for setting in junction box, two of them are signal binding post, two are tripping binding post, each binding post is installed on top cover, the lower end of signal binding post is connect by the tongue tube being arranged in conductive lead wire and light Gas Signal component, the lower end of tripping binding post is connect by the tongue tube being arranged in conductive lead wire and grave gas signal component, binding post below top cover and one layer of coatings are painted on the surface of conductive lead wire, separation insulation board is provided between every two binding post below top cover.The utility model malfuncton probability is low, safe and reliable, performance is stablized, and has significant economic value and social value.

Description

A kind of false action-proof type Buchholz relay of New Insulation Structure

Technical field

The utility model relates to technical field of electric equipment, and in particular to a kind of false action-proof type watt of New Insulation Structure This relay.

Background technique

Buchholz relay is a kind of protective device used in oil-immersed transformer and load ratio bridging switch, is mounted on transformer On oil conservater and pipeline between fuel tank, the gas and oil stream generated using power transformer interior fault makes Buchholz relay Contact movement, cause main transformer to signal or tripping, the correct of Buchholz relay runs that be that transformer is correctly run important It ensures.When transformer operates normally, it is filled with transformer oil inside Buchholz relay, when slight event occurs for inside transformer When barrier, fault point is locally overheated, and neighbouring transformer oil is caused to expand, and the air dissolved in oil is expelled out of, and forms bubble, These bubbles rise inside Buchholz relay, and oil liquid liquid level is promoted to decline, and the float for floating on liquid level declines therewith and connects dry At this moment spring contact issues alarm signal；When catastrophe failure occurs for inside transformer, heavy flow, oil stream are generated in pipeline The baffle inside Buchholz relay is impacted, baffle belt moving magnet connects trip(ping) circuit to dry-reed contact is mobile, makes circuit breaker trip.

In recent years, the accident that Buchholz relay malfunction causes main transformer to trip, gas repeatedly occurred for China's power grid Relay misoperation as the reason of be: during pressure regulation, high-temperature electric arc make insulate oil decomposition and generate a large amount of free charcoals and greasy filth, Free charcoal and greasy filth are attached to the tongue tube and its conducting position of Buchholz relay, or due to running for a long time, because quiet The reasons such as electricity are in tongue tube and its conducting position dust collection, due to spacing very little between Buchholz relay node, along with conduction The insulation effect of lead is bad, may make two binding posts of Buchholz relay junction box under above situation or two are led It is formed between electrical lead and is shorted channel, cause light Buchholz relay mistaking signal, grave gas malfunction is caused to cause to lead when serious Become tripping, has seriously affected factory and the daily life and production of resident, caused huge economic loss, and to entire power grid Safe operation buried great security risk.Therefore, develop that a kind of malfuncton probability is low, safe and reliable, performance is steady The false action-proof type Buchholz relay of fixed New Insulation Structure is desirability.

Utility model content

The New insulated that the purpose of this utility model is to provide a kind of malfuncton probabilities is low, safe and reliable, performance is stable The false action-proof type Buchholz relay of structure.

The purpose of this utility model is achieved in that including shell and fuse, fuse includes top cover and is fixed on top cover The bracket of lower section is disposed with light Gas Signal component and grave gas tripping component, the top of top cover on bracket from top to bottom It is provided with junction box, there are four binding post, two of them are signal binding post for setting in junction box, and two are tripping binding post, Each binding post is installed on top cover, and the upper end of binding post is located in the junction box above top cover, and lower end is located under top cover The lower end of side, signal binding post is connect by the tongue tube being arranged in conductive lead wire and light Gas Signal component, and trip binding post Lower end connect by the tongue tube being arranged in conductive lead wire and grave gas tripping component, the binding post and conduction below top cover draw It is painted with one layer of coatings on the surface of line, is provided with separation insulation board between the every two binding post below top cover.

Further, the material of coatings is PRTV coating.

Further, the material for separating insulation board is the anti-oxidant insulating materials of heat resistanceheat resistant.

Further, be provided with the coaming plate crowded around around the signal binding post above top cover and tripping wiring, coaming plate with connect There are the gaps that is filled with water between the inner wall of line case.

Further, the insulating barrier crowded around is provided with around the signal binding post below top cover and tripping wiring.

Further, two signal binding posts and two tripping binding posts are evenly distributed on top cover at two rows two column, point Completely cut off listrium and insulating barrier to separate the signal binding post below top cover and the binding post that trips in four independent spaces.

The utility model brushes one layer of coatings on the binding post and conductive lead wire surface below top cover, actually make Even if the used time there are the sundries such as greasy filth, carbon deposit or dust to be adhered on binding post and conductive lead wire, the outer rim of two binding posts is connected to Or the outer rims of two conductive lead wires is connected to, the conductive part due to the insulating effect of coatings, in binding post and conductive lead wire Dividing will not be connected to, and would not cause light Buchholz relay mistaking signal or mistrip, in addition, setting between adjacent two binding post Separation insulation board has been set, the channel to mislead between binding post has been separated from physical world, has effectively reduced Buchholz relay Malfuncton probability, improve the safety operation level of transformer and entire power grid, thus reduce due to Buchholz relay miss Bring economic loss is acted, security risk is eliminated.The utility model malfuncton probability is low, safe and reliable, performance is stablized, tool There are significant economic value and social value.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model junction box 6 and binding post；

Fig. 3 is the structural schematic diagram of the utility model coaming plate 12；

Fig. 4 is the structural schematic diagram that the utility model separates insulation board 11 and insulating barrier 14.

In figure: 1- shell, 2- top cover, 3- bracket, the light Gas Signal component of 4-, 5- grave gas tripping component, 6- junction box, 7- signal binding post, 8- tripping binding post, 9- conductive lead wire, 10- coatings, 11- separate insulation board, 12- coaming plate, and 13- is contained Water gap, 14- insulating barrier.

Specific embodiment

The utility model will be further described below with reference to the accompanying drawings, but is not subject in any way to the utility model Limitation instructs made any changes and modifications based on the utility model, belongs to the protection scope of the utility model.

As shown in figures 1-4, the utility model includes shell 1 and fuse, and fuse includes top cover 2 and is fixed below top cover 2 Bracket 3, light Gas Signal component 4 and grave gas tripping component 5, the top of top cover 2 are disposed on bracket 3 from top to bottom It is provided with junction box 6, there are four binding post, two of them are signal binding post 7 for setting in junction box 6, and two are tripping wiring Column 8, each binding post are installed on top cover 2, and the upper end of binding post is located in the junction box 6 of 2 top of top cover, and lower end is located at top The lower end of the lower section of lid 2, signal binding post 7 is connect by the tongue tube being arranged in conductive lead wire 9 and light Gas Signal component 4, The lower end of tripping binding post 8 is connect by the tongue tube being arranged in conductive lead wire 9 and grave gas tripping component 5,2 lower section of top cover It is painted with one layer of coatings 10 on the surface of binding post and conductive lead wire 9, between the every two binding post of 2 lower section of top cover It is provided with and separates insulation board 11.

The material of coatings 10 is PRTV coating, and PRTV coating is one kind in RTV(room temperature vulcanized silicone rubber) material base The electric power super long effective anti-pollution flashover coating developed on plinth has very strong oil repellency, hydrophobicity and non-stick, excellent insulation performance, Adhesive force is strong, the service life is long, electrical erosion resistance, ageing-resistant.Therefore, coatings 10 are more appropriate using PRTV coating, both do not dissolve in oil, Dielectric strength is also higher, it is ensured that the insulation between conductive lead wire 9 and conductive lead wire 9, conductive lead wire 9 and remaining element can reach To requirement, the painting process of PRTV coating are as follows: the surface for wiping conductive lead wire 9 and binding post with acetone after to be dried, is adjusted Even PRTV coating is not dripped, then Tu Yici with hairbrush paint in one direction to coating, is brushed 3 times, is painted with repeatedly It is placed on drying at dry, insulation resistance is tested after dry, 2000M Ω or more is qualification.

The material for separating insulation board 11 is the anti-oxidant insulating materials of heat resistanceheat resistant, and this insulating materials is guaranteeing there is preferably insulation Also there is longer service life under conditions of effect.

Since the Buchholz relay that fortuitous event is either located outside might have case lid and cabinet of the water from junction box 6 Junction, which enters, connects wires in case 6, and water may be connected to binding post, causes tripping to have a power failure, in order to prevent the hair of such case It is raw, it is provided with the coaming plate 12 crowded around around the binding post of 2 top of top cover, there are be filled with water between coaming plate 12 and the inner wall of junction box 6 Gap 13, even such setting due to the presence of coaming plate 12, binding post is crowded around so that there is water to enter in junction box 6 In inside, the water into junction box 6 can only be accumulated in and is filled with water in gap 13, thus the case where avoiding ponding from being connected to binding post.

It is provided with the insulating barrier 14 crowded around around the binding post of 2 lower section of top cover, insulating barrier 14 can cut off binding post With the connection between remaining element of Buchholz relay, insulation effect is more preferable.

Preferably, in order to there is preferable insulation effect, two signal binding posts 7 and two tripping binding posts 8 are at two rows two Column are evenly distributed on top cover 2, are separated insulation board 11 and insulating barrier 14 and are separated binding post in four independent spaces,

The power supply of aluminium electroloysis needs the direct current of high voltage, high current, powers in such a way that more Rectification Power Factors are in parallel, And pressure regulation core of the load ratio bridging switch as Rectification Power Factor, it is directly related to the reliability of electrolytic aluminium power supply, Buchholz relay As the main protection element of load ratio bridging switch, once internal fault occurs for load ratio bridging switch, rapid tripping high pressure open circuit is answered Grave gas tripping repeatedly occurs during transferring the files, causes in power supply for device, excision Rectification Power Factor operation, existing part relay It is disconnected, heavy losses are caused to Aluminum Electrolysis Production, protection act is irregular, in operation, transfers the files, or even shut down in Rectification Power Factor In, there is generation, protective value is bad.The utility model has prevented the tripping malfunction of load ratio bridging switch grave gas, improves The reliability of Buchholz relay movement, enables protection accurate response load ratio bridging switch internal fault, it is ensured that electrolytic aluminium supplies The continuity of electricity, there is considerable economic benefit.

Claims (6)

1. a kind of false action-proof type Buchholz relay of New Insulation Structure, including shell (1) and fuse, the fuse includes top Lid (2) and the bracket (3) that is fixed below top cover (2) are disposed with light Gas Signal component on bracket (3) from top to bottom (4) it trips component (5) with grave gas, is provided with junction box (6) above top cover (2), it is characterised in that: the junction box (6) There are four binding post, two of them are signal binding post (7) for interior setting, and two are tripping binding post (8), and each binding post is worn On top cover (2), the upper end of binding post is located at the junction box (6) above top cover (2) Nei, and lower end is located at the lower section of top cover (2), The lower end of signal binding post (7) is connect by conductive lead wire (9) with the tongue tube being arranged in light Gas Signal component (4), is tripped The lower end of binding post (8) is connect by the tongue tube being arranged in conductive lead wire (9) and grave gas tripping component (5), the top cover (2) one layer of coatings (10) is painted on the surface of binding post and conductive lead wire (9) below, it is every below top cover (2) It is provided between two binding posts and separates insulation board (11).

2. a kind of false action-proof type Buchholz relay of New Insulation Structure according to claim 1, it is characterised in that: institute The material for stating coatings (10) is PRTV coating.

3. a kind of false action-proof type Buchholz relay of New Insulation Structure according to claim 1, it is characterised in that: institute The material for stating separation insulation board (11) is the anti-oxidant insulating materials of heat resistanceheat resistant.

4. a kind of false action-proof type Buchholz relay of New Insulation Structure according to claim 1, it is characterised in that: institute The coaming plate (12) for being provided with and crowding around around the binding post above top cover (2) is stated, is stayed between coaming plate (12) and the inner wall of junction box (6) Be filled with water gap (13).

5. a kind of false action-proof type Buchholz relay of New Insulation Structure according to claim 1, it is characterised in that: institute State the insulating barrier (14) for being provided with and crowding around around the binding post below top cover (2).

6. a kind of false action-proof type Buchholz relay of New Insulation Structure according to claim 5, it is characterised in that: institute It states two signal binding posts (7) and two tripping binding posts (8) to be evenly distributed on top cover (2) at two rows two column, separates insulation Plate (11) and insulating barrier (14) separate binding post in four independent spaces.