CN2852365Y - Two-in-one pointer type gas relay for fully-sealed transformer - Google Patents

Abstract

The utility model relates to a two-in-one indicating needle type gas relay for a fully-sealed transformer, which is the improvement of the structure of a gas relay for a fully-sealed transformer and solves the problems that an inspector can not see the particular position of an oil surface through an inspection window, and a pipe type oil level indicator can be arranged for monitoring the position of the oil surface, so as to have disadvantage of inconvenient use. The utility model comprises a casing, the inspection window, a junction box, a probe, a filling plug, an air release valve, a division circle, and a core body frame, wherein an indicating needle supporting frame, an indicating needle shaft, an indicating needle and a float frame are arranged on the core body frame. A connecting rod is connected with a float. One end of a guide rod is fixed on the core body frame, and the other end of the guide rod is penetrated through a circular hole at the center of the float. When the oil surface in a transformer oil tank is changed, the float frame is driven by the float to move up and down in height. Because the indicating needle shaft is connected with the float frame, the pointing direction of the indicating needle is changed following the oil surface and a maintainer can understand the position of the oil surface in the oil tank according to pointed scale of the indicating needle in the window. The utility model has the advantage of convenient use.

Description

Full-sealed transformer is with two-in-one pointer Buchholz relay

Technical field: the utility model relates to a kind of relay, and especially a kind of full-sealed transformer is with two-in-one pointer Buchholz relay, and it is mainly used in the various types of oil immersed type full-sealed transformers of protection.

Background technology: transformer is normally in service; Buchholz relay inside is full of transformer oil; when breaking down in transformer inside; transformer oil decompose and the air accumulation that produces in the air chamber of relay; air pressure forces pasta to descend, and when the volume of gas acquires a certain degree, triggers and reports to the police and the excision contact; output alarm signal or excision signal, thus reach the purpose of protecting transformer.The Buchholz relay of extensive use in the market, when sending warning or excision signal, the residing position of pasta is respectively under the case lid under 5mm and the case lid during 20mm, that is to say, the inspection personnel can't see the particular location of pasta by inspection hole, inspection hole performs practically no function, need to be equipped with corresponding tubular type oil level indicator and monitor the pasta position, use inconvenience and cost height, also have a kind of relay in addition,, the false alarm phenomenon often occurs because sensitivity is too high from external introduction, influence testing staff's work, be not suitable for China's actual conditions and use.

Summary of the invention: in order to solve the problem of above-mentioned existence, the utility model provides a kind of fuel head, full-sealed transformer simple in structure, easy to use of can directly indicating on inspection hole with two-in-one pointer Buchholz relay; Goal of the invention of the present utility model is achieved through the following technical solutions: full-sealed transformer is with two-in-one pointer Buchholz relay: comprise housing, loam cake, be provided with inspection hole in the housing both sides, be provided with terminal box successively last covering, probe, oil filler plug, vent valve, in terminal box, be provided with binding post, on housing, dial is installed with the inspection hole correspondence position, the core body frame is installed in the loam cake bottom, the pointer support is installed on the core body frame, on the pointer support, be provided with needle pivot, pointer is installed on the needle pivot, and fix with nut, needle pivot is connected with the circular hole of baffle plate, fix with the another one nut, the float frame is installed on the core body frame, the float frame is connected with the copper pipe two ends, the copper pipe other end links to each other by split pin with connecting rod, one end of iron pin is passed in the copper pipe on the float frame, the other end passes the elliptical aperture of baffle plate, the connecting rod lower end is connected with float, guide post one end is fixed on the core body frame, and the guide post other end passes the circular hole at float center, on the core body frame magnet frame is installed, on magnet frame, be provided with magnet, magnetic conductive rod is equipped with two dry-reed contacts respectively in core body frame both sides.

Guard shield is installed in the housing below.

Advantage of the present utility model: the utility model adopts said structure, when the pasta in the oil tank of transformer descends or rise, float drives the float frame with the reduction of pasta or the together variation that raises, because the utility model is connected needle pivot together with the float frame, just indirect with pointer variation and oil tank of transformer in the variation of pasta get in touch together, the maintainer just can be by observing pointer scale pointed in the inspection hole like this, know clearly the position of pasta in the oil tank of transformer, for daily service work has brought many convenience, in time pinpoint the problems possibly also greatlyyer, avoid the generation of Accident of Transformer, and solved the original problem that needs the special tubular type oil level indicator of outfit to measure the pasta position, reduced cost.

Description of drawings:

Fig. 1 is the structural representation of full-sealed transformer with two-in-one pointer Buchholz relay;

Fig. 2 is the cutaway view of full-sealed transformer with two-in-one pointer Buchholz relay;

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is the magnet frame installation diagram.

Embodiment: full-sealed transformer is with two-in-one pointer Buchholz relay: comprise housing 11, loam cake 3, be provided with inspection hole 27 in the housing both sides, on loam cake 3, be provided with terminal box 6 successively, probe 2, oil filler plug 5, vent valve 4, in terminal box 6, be provided with 4 binding posts 1,29,30,31, on housing 11, dial 28 is installed with inspection hole 27 opposite positions, core body frame 10 is installed in loam cake 3 bottoms, pointer support 26 is installed on core body frame 10, on pointer support 26, be provided with needle pivot 23, pointer 22 is installed on the needle pivot 23, and it is fixing with nut 21, pointer support 26 is shaped as a rectangle is converted into vertical with it angle at its end, in the part central authorities that bend up a hole is arranged; Fold a flute profile in the opposite direction at the rectangular other end then, the central authorities on groove both sides have a hole respectively, and these two holes are through hole; The external diameter of needle pivot 23 just fits like a glove with two through holes of pointer support 26; Pointer 22 is placed in the junction of needle pivot and short trough rim, fix with nut, baffle plate 19 has two holes on it, one is circular, another one is an oblong, the other end of needle pivot 23 is connected with the circular port of baffle plate 19, fix with the another one nut, float frame 25 is installed on core body frame 10, float frame 25 is connected with copper pipe 24 two ends, copper pipe 24 other ends link to each other by split pin 9 with connecting rod 15, one end of iron pin 20 is passed in the copper pipe 24 on the float frame 25, the other end passes the elliptical aperture of baffle plate 19, the length of iron pin 20 will make not reason motion and landing is got off of baffle plate 19, with glue iron pin 20 is fixed on the copper pipe then, thereby needle pivot is connected together with the float frame, connecting rod 15 is connected with float 14, guide post 12 1 ends are fixed on the core body frame 10, the other end of guide post 12 passes the circular hole at float center, on core body frame 10, magnet frame is installed, magnet 16 is installed on magnet frame 17, magnetic conductive rod 18, two dry-reed contacts 8 are separately fixed at the both sides of core body frame 10 with clip 32, one of them dry-reed contact is used for sending alarm signal, another dry-reed contact is used for sending the excision signal, with float 14 corresponding positions guard shield 13 is installed below housing.

Operation principle of the present utility model: when the pasta in the oil tank of transformer descends or rise; float drives the float frame with the reduction of pasta or the together variation that raises; the iron pin is also along with the motion of float frame; move up and down; interlock magnet frame movement therewith; magnet also moves up and down thereupon; the dry-reed contact of the dry-reed contact of adhesive alarm signal and excision signal; promptly when pasta drops to the dry-reed contact position of alarm signal; relay sends alarm signal; when pasta continued to drop to the dry-reed contact position of excision signal, relay excised transformer from electrical network, thereby reached the purpose of protection transformer.Because new design is connected needle pivot together with the float frame, just indirect with pointer variation and oil tank of transformer in the variation of pasta get in touch together, the maintainer just can be by observing pointer reading pointed in the inspection hole like this, know clearly the position of pasta in the oil tank of transformer, for daily service work has brought many convenience.In time pinpoint the problems possibly also greatlyyer, avoid the generation of Accident of Transformer.

Claims (2)

1, full-sealed transformer is with two-in-one pointer Buchholz relay: comprise housing, loam cake, be provided with inspection hole in the housing both sides; Be provided with terminal box successively last covering, probe, oil filler plug, vent valve, in terminal box, be provided with binding post, it is characterized in that: on housing, dial is installed with the inspection hole correspondence position, the core body frame is installed in the loam cake bottom, the pointer support is installed on the core body frame, on the pointer support, be provided with needle pivot, pointer is installed on the needle pivot, and fix with nut, needle pivot is connected with the circular hole of baffle plate, fixes with the another one nut, and the float frame is installed on the core body frame, the float frame is connected with the copper pipe two ends, the copper pipe other end links to each other by split pin with connecting rod, and an end of iron pin is passed in the copper pipe on the float frame, and the other end passes the elliptical aperture of baffle plate, the connecting rod lower end is connected with float, guide post one end is fixed on the core body frame, and the guide post other end passes the circular hole at float center, on the core body frame magnet frame is installed, on magnet frame, be provided with magnet, magnetic conductive rod is equipped with two dry-reed contacts respectively in core body frame both sides.

2, pointer gas relay according to claim 1 is characterized in that: guard shield is installed in described housing below.

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