CN2742554Y

CN2742554Y - Multifunction transformer protector

Info

Publication number: CN2742554Y
Application number: CN 200420112940
Authority: CN
Inventors: 姚洪林
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-04
Filing date: 2004-11-04
Publication date: 2005-11-23
Anticipated expiration: 2014-11-04

Abstract

The utility model relates to a multifunction transformer protection device. The multifunction transformer protection device is the improvement on the structure of the case cover mounting type protection device of the oil-immersed transformer. The utility model solves the technical problems that the gas relay of the case cover mounting type can not be supplied with the oil because of the reduction of the oil surface; the false alarm accident is easily generated; the time constant of the alarm action is relatively great; the abrupt accident is not alarmed in time. The protection device is composed of a shell body, an intermediate partition plate, an oil guide pipe, a thermometer bulb, a limit temperature relay, an oil level gauge, an abrupt accident alarm relay, an oil injecting cup, etc. The utility model has the advantages that the slowly generated accident or the abruptly generated accident is achieved the protection actions of monitoring and alarm; the false alarm is not generated, etc. The protection device has multiple functions, and is especially suitable for the security protection of the devices of the hermetically sealed oil-immersed transformer without the oil conservator, the reactor, etc. The device has compact structure and small volume.

Description

Multi-functional protection equipment for transformer

Technical field: the invention is the improvement to the structure of oil-immersed type transformer case lid mount type protective device.

Background technology: at present, multi-functional oil-immersed type transformer case lid mount type protective device commonly used is a Buchholz relay, pressure switch, the combination product of temperature relay, its deficiency: 1. do not have the repairing structure, the false alarm action often occurs because of pasta reduces; 2. accident alarming constant operate time is bigger, can not in time report to the police to burst accident.

Summary of the invention: the purpose of the invention provides a kind of energy and gives the timely repairing in case lid mount type Buchholz relay grease chamber and show oil level, the multi-functional protection equipment for transformer of avoiding occurring the false alarm action and in time reporting to the police to burst accident; The purpose of the invention is to realize by following technical scheme: multi-functional protection equipment for transformer; comprise housing; Buchholz relay; make the form hole of the Buchholz relay of two symmetries in lower housing portion; it is characterized in that on housing, making horizontal direction probe installing hole; make oil level indicator on top slotted eye is installed; on the housing; open port is made in the lower end; central dividing plate is installed in enclosure interior; make air vent hole at following face place on the housing near central dividing plate; and vent valve is installed on air vent hole; below being divided into enclosure interior, central dividing plate is Buchholz relay grease chamber and top for accumulator; in the Buchholz relay grease chamber, Buchholz relay is installed; in the probe aperture of horizontal direction on the housing probe is installed, oil guide pipe is installed on central dividing plate, oil guide pipe is made

Shape, the logical hydraulic fluid port in two ends is all towards the accumulator direction, one end is in the Buchholz relay grease chamber, one end is in accumulator, on the installation of the oil level indicator on housing slotted eye, oil level indicator is installed, on the open port in housing upper end, connecting cap is installed, make on the connecting cap burst accident alarm relay cavity is installed, the priming cup hole, the binding post hole, air vent, air vent hole, fixed bolt hole, inner chamber at connecting cap is installed the burst accident alarm relay, be screwed on connecting cap, in the priming cup hole on connecting cap priming cup is installed, in the oiling rim of a cup sealing screw is installed, in the binding post hole binding post is installed, superincumbent accumulator inner chamber dress can separate junction block, dry reed switch with can separate junction block and connect by lead, can separate junction block and connect with binding post by lead.

Multi-functional protection equipment for transformer; it is characterized in that Buchholz relay is made up of float positioning sleeve, float, magnet, rocking arm, dry reed switch; make the window of symmetry on the float positioning sleeve sidewall; window on it is corresponding with form on the housing; dry reed switch is fixed on float positioning sleeve bottom; magnet is installed on the float bottom; the corresponding dry reed switch of float magnet end that has magnet; be placed in the float positioning sleeve; rocking arm one end is installed in the upper port place of float positioning sleeve, the float positioning sleeve is fixed on the open passage port in lower end on the housing.

Multi-functional protection equipment for transformer; it is characterized in that oil level indicator by the spacing reflector of " U " shape, ball float, support set, show glass pane, show that the window gland forms; the spacing reflector of " U " shape upper end is fixed on the housing through support set; the spacing reflector of " U " shape lower end is fixed on the central dividing plate; the spacing reflector upper and lower end of " U " shape communicates with accumulator; ball float is placed in the spacing reflector of " U " shape, shows that glass pane is fixed on the housing through showing the window gland.

Multi-functional protection equipment for transformer is characterized in that the burst accident alarm relay, is made of pneumatophore, mounting panel, test axle, diaphragm capsule, switch mounting panel, sensitive switch, connection cord; Pneumatophore is made of screw thread pad, plain cushion, nut cap, spring, air bag, and screw thread pad and plain cushion clamp the lower end of air bag, tightens fixingly with the nut cap, and spring is contained in the air bag inner chamber; Pneumatophore is installed in the burst accident alarm relay cavity of connecting cap; Make the screw that loses heart with one heart on the mounting panel, air vent hole, the test axis hole, two air vents, fixing threaded hole, center roof vent, the screw that loses heart with one heart communicates with center roof vent, steel ball is put into the screw that loses heart with one heart, the through hole screw is screwed in the screw that loses heart with one heart, leave the gap between steel ball and the through hole screw, test axle is contained in the test axis hole on the mounting panel, fix with straight pin, mounting panel after the combination is installed in the pneumatophore top, the connection cord two ends connect nut cap and the test axle in the pneumatophore respectively, air vent on the mounting panel communicates with air vent on the connecting cap, in the air vent on the mounting panel air relief cock is installed; Air vent hole on the mounting panel communicates with air vent hole on the connecting cap, and diaphragm capsule is made with elastomeric material, makes air vent hole, fixed bolt hole, air vent on it, and diaphragm capsule is installed in above the mounting panel; Make spherical concave panel on the switch mounting panel, sensitive switch installing hole, fixed bolt hole, air vent hole, air vent are made in the center, air vent hole communicates with air vent, sensitive switch is installed in the sensitive switch installing hole, the sensitive switch contact exposes spherical concave panel, the switch mounting panel is installed in above the diaphragm capsule, air vent on this moment switch mounting panel communicates with the concentric disappointing screw on the mounting panel, air vent hole on the switch mounting panel communicates with air vent hole on the mounting panel, by diaphragm capsule, the fixing threaded hole on the mounting panel is fixedly mounted on the connecting cap with screw.

Multi-functional protection equipment for transformer; it is characterized in that on the sidewall of the accumulator of housing, making temperature gauge stand installing hole; on central dividing plate, make thermometer bulb seat hole; the temperature gauge stand that is shaped on inner chamber is installed in temperature gauge stand installing hole, in the temperature gauge stand, thermometer is installed, fix with thread bush; the thermometer bulb seat is installed in the thermometer bulb seat hole on central dividing plate; temperature gauge stand and thermometer bulb seat are connected through the connection pipe, the capillary of thermometer and thermometer bulb are passed connection manage, and thermometer bulb installs to thermometer bulb seat inner chamber.

Multi-functional protection equipment for transformer; it is characterized in that on central dividing plate, making limiting temperature Relay base hole; the limiting temperature Relay base that is shaped on inner chamber is installed in the limiting temperature Relay base hole; the lower end position of limiting temperature Relay base is in the bottom of Buchholz relay grease chamber; the limiting temperature relay is contained in the limiting temperature Relay base inner chamber; be fixed on the central dividing plate with thread terminal; thread terminal is connected with the limiting temperature relay; thread terminal with can separate junction block and be connected, can separate junction block and be connected with binding post.

The advantage of the invention: because structurally be provided with accumulator, priming cup and

The shape oil guide pipe, realized the timely repairing function in case lid mount type Buchholz relay grease chamber: The shape oil guide pipe is owing to lead to the hydraulic fluid port two ends all towards the top, and oil guide pipe can only lead to oil can not ventilate, and the gas in the Buchholz relay grease chamber can not enter accumulator through oil guide pipe, avoids producing because of pasta descends the false alarm action occurring; Oil level indicator is installed on housing can be shown the pasta position, burst accident warning structure has been installed on housing top, oil pressure when burst accident takes place in the oil tank of transformer increases suddenly, the pressure of oil is delivered to accumulator by oil guide pipe, pressure acts on the air bag bottom of burst accident warning structure, gas in the air bag is compressed and acts on the diaphragm capsule, diaphragm capsule is upwards distortion under gas pressure, the collision sensitive switch, sensitive switch connects warning device, realize the burst accident warning function, reaction speed is fast; In the Buchholz relay grease chamber below thermometer bulb has been installed, the oil temperature has been presented on the thermometer by thermometer bulb, can intuitively read the temperature of oil; Make window making on the housing of Buchholz relay grease chamber on form and the float positioning sleeve, can observe the residing position of float; The test axle has been installed on mounting panel, and the effect of test axle is not have under the situation of burst accident, the mechanical electric performance of manual examination (check) burst relay; Owing to the limiting temperature relay is installed, can reports to the police to the minimum highest threshold temperature of regulation; On the housing of Buchholz relay grease chamber, make the vent valve of air vent hole and installation; extract the gas sample in the time of can exitting and move during oiling; probe can not have under the situation of accident; the mechanical electric performance of manual examination (check) Buchholz relay; because above-mentioned advantage has embodied this protective device and has had multifunctional performance.

Description of drawings:

Fig. 1 is multi-functional protection equipment for transformer structural representation;

Fig. 2 is the A-A cutaway view among Fig. 1;

Fig. 3 is the vertical view among Fig. 1;

Fig. 4 is that the B-B among Fig. 3 analyses and observe rotation diagram;

Fig. 5 is the mounting panel perspective view that has the test axle;

Fig. 6 is a C-C cutaway view among Fig. 5;

Fig. 7 is a D-D cutaway view among Fig. 5;

Fig. 8 is an E-E cutaway view among Fig. 5;

Fig. 9 is oil guide pipe, thermometer bulb, limiting temperature relay scheme of installation;

Figure 10 is the switch mounting plates structure schematic diagram that drives sensitive switch.

Embodiment: multi-functional protection equipment for transformer is by housing 2, Buchholz relay 74, probe 16, central dividing plate 11, sight glass 13, gland 12, oil guide pipe 15, thermometer bulb 51, thermometer bulb seat 9, limiting temperature relay 52, limiting temperature Relay base 21, thread terminal 22, oil level indicator 73, connection pipe 27, temperature gauge stand 6, thermometer 7, thread bush 5, can separate junction block 30, connecting cap 29, priming cup 34, screw 36, oil cup cap 37, burst accident alarm relay 75, screw 77, switch cover 39, vent valve 1, binding post 3 constitutes; Buchholz relay 74 is made up of float positioning sleeve 19, float 18, magnet 78, rocking arm 17, dry reed switch 20; Oil level indicator 73 by the spacing reflector 26 of " U " shape, ball float 23, support set 28, show glass pane 25, show that window gland 24 forms; Burst accident alarm relay 75 is made of pneumatophore 79, mounting panel 43, connection cord 33, test axle 48, test axle cap 47, straight pin 45, air relief cock 44, through hole screw 49, steel ball 50, diaphragm capsule 42, switch mounting panel 38, sensitive switch 54; Pneumatophore 79 is made up of air bag 4, screw thread pad 31, plain cushion 40, nut cap 32, spring 4l; Two form holes 56 of symmetry are made in housing 2 bottoms, and probe installing hole 83, make oil level indicator on top slotted eye 57 is installed, housing 2 upper and lower ends are made

open port

58,59, making air vent hole 60, on the sidewall of accumulator 62, make the installing hole of temperature gauge stand installing hole 8l and connecting cap near central dividing plate 11 places; On float positioning sleeve 19, make the window 82 of symmetry, dry reed switch 20 is fixed on float positioning sleeve 19 bottoms, magnet 78 is installed on float 18 bottoms, the float 18 that will have magnet 78 is placed in the float positioning sleeve 19, magnet end is facing to dry reed switch 20, rocking arm 17 1 ends are installed in the upper port place of float positioning sleeve 19, port 59 places are opened in the lower end that float positioning sleeve 19 is fixed on the housing 2, window 82 on it is corresponding with the form hole 56 on the housing 2, probe 16 horizontal directions are installed in the probe installing hole 83 on the housing 2, add sealing ring; Central dividing plate 11 is installed at inner chamber middle part at housing 2, add seal washer 14 between central dividing plate 11 and the housing 2, make Oil Guide pore 84 on the central dividing plate 11, thermometer bulb seat hole 85, limiting temperature Relay base hole 86, central dividing plate 11 is with housing 2 inner chamber separated into two parts, become accumulator 62 above, become Buchholz relay grease chamber 61 below, sight glass 13 is fixedly mounted on the housing 2 by gland 12, adds seal washer between sight glass 13 and the housing 2, the Oil Guide pore 84 on central dividing plate 11 is installed oil guide pipe, fixing with nut 10, thermometer bulb seat 9 is installed in thermometer bulb seat hole 85, fixing with quick-connecting joint 8, limiting temperature Relay base 21 is installed in limiting temperature Relay base hole 86, fixing with thread terminal 22, oil guide pipe 15 is made Shape, the two ends port is all towards accumulator 62, its upper end is stretched in the accumulator 62, its lower end is in Buchholz relay grease chamber 61, oil guide pipe 15 adds seal washer with central dividing plate 11, limiting temperature relay 52 is installed in limiting temperature Relay base 21, limiting temperature relay 52 is connected with lead with the conductive pole of thread terminal 22, thermometer bulb seat 9, add seal washer between limiting temperature Relay base 21 and the central dividing plate 11, temperature gauge stand 6 is installed in the thermometer installing hole 81 on housing 2, temperature gauge stand 6 is connected with thermometer bulb seat 9 usefulness connection pipe 27, thermometer 7 usefulness thread bushs 5 are fixed on the temperature gauge stand 6, the capillary of thermometer 7 and thermometer bulb 51 pass in connection pipe 27, thermometer bulb is installed in the inner chamber of thermometer bulb seat 9, between temperature gauge stand 6 and housing 2, add seal washer, can separate junction block 30 at the accumulator dress, can separate junction block 30 is connected with lead with the wire column of thread terminal 22, dry reed switch 20 with can separate junction block 30 usefulness leads and be connected, the spacing reflector of " U " shape 26 upper ends are screwed on housing 2 through support set 28, the spacing reflector of " U " shape 26 lower ends are screwed on central dividing plate 11, ball float 23 is placed in the spacing reflector 26 of " U " shape, to show that glass pane 25 usefulness show that window gland 24 is fixed on oil level indicator and installs on the housing 2 around the slotted eye 57, add seal washer showing between glass pane 25 and the housing 2, make on the connecting cap 29 burst accident alarm relay 75 cavitys 63 are installed, priming cup hole 64, binding post hole 65, air vent 66, fixed bolt hole 67, air vent hole 72 and junction box 35, connecting cap 29 is installed in open port 58 places, housing 2 upper ends, add seal washer between connecting cap 29 and the housing 2, priming cup 34 is installed in the priming cup hole 64 on the connecting cap 29, add seal washer between priming cup 34 and the connecting cap 29, port at priming cup 34 is installed sealing screw 36, oil cup cap 37 is installed at rim of a cup place at priming cup 34, binding post 3 is installed in the binding post hole 65, binding post 3 with can separate junction block 30 usefulness leads and be connected, pneumatophore 79 is to clamp air bag 4 lower ends with screw thread pad 31 and plain cushion 40, tighten fixing with nut cap 32, spring 41 is installed in and constitutes pneumatophore 79 in the inner chamber of air bag 4, pneumatophore 79 is installed in the cavity 63 that burst accident alarm relay 75 is installed in the connecting cap 29; On mounting panel 43, make the screw 68 that loses heart with one heart, air vent hole 72, test axis hole 70,

air vent

66,68, fixed bolt hole 67, center roof vent 69, center roof vent 69 communicates with the concentric screw 68 that loses heart, steel ball 50 is put into the screw 68 that loses heart with one heart, again through hole screw 49 is screwed in the screw 68 that loses heart with one heart, leave the gap between steel ball 50 and the through hole screw 49, in the test axle 48 test axis holes 70 that are contained on the mounting panel 43, fixing with straight pin 45, to test axle cap 47 is contained on the test axis hole 70, test axle 48 can only rotate, can not translation, air relief cock 44 is installed in the air vent 66 on the mounting panel 43, the top that mounting panel 43 after the combination is placed in pneumatophore 79 clamps pneumatophore 79, the two ends of connection cord 33 are connected the nut cap 32 in the pneumatophore 79 respectively and test axle 48, air vent 66 on the mounting panel 43 communicates with air vent 66 on the connecting cap 29, air vent hole 72 on the mounting panel 43 communicates with air vent hole 72 on the connecting cap 29, connection cord 33 is to be fixed on the test axle 48 by screw 46, and screw 46 dishing test axles 48 play limit assay axle 48 direction of rotation; Diaphragm capsule 42 adopts elastomeric material to make, and makes air vent 68 and fixed bolt hole 67 on it, and air vent hole 72 is installed in diaphragm capsule 42 above the mounting panel 43; Make spherical concave panel 76 on the switch mounting panel 38, sensitive switch 54 installing holes 88 are made in the center, fixed bolt hole 67, air vent hole 72, air vent 71, air vent hole 72 communicates with air vent 71, sensitive switch 54 is installed in 88 li of installing holes by sensitive switch support 53, the contact of sensitive switch 54 exposes spherical concave panel 76, switch mounting panel 38 is installed in above the diaphragm capsule 42, with bolt 77 with switch mounting panel 38, diaphragm capsule 42, mounting panel 43 usefulness set bolts 67 are fixed on the connecting cap 29, the concentric screw 68 that loses heart on the air vent 71 of switch mounting panel 38 and the mounting panel 43 communicates, air vent hole 72 on the switch mounting panel 38 communicates with air vent hole 72 on the mounting panel 43, and switch cover 39 is installed on the switch mounting panel 38.

Since adopt accumulator, priming cup and

Shape oil guide pipe structure, repairing at any time; When the beginning oiling, the gas in the Buchholz relay grease chamber is discharged gas through air vent hole and vent valve; Because oil guide pipe is made

Shape, the gas in the Buchholz relay grease chamber can not enter accumulator from oil guide pipe; The transformer top-oil temperature can be from Direct observation on the thermometer; When oil temperature when defining numerical value, the limiting temperature relay will send alarm signal; Because the burst accident alarm relay has been installed, when burst accident takes place when, the oil pressure of oil tank of transformer increases suddenly, the pressure of oil is delivered to accumulator by oil guide pipe and makes pneumatophore action, and under the burst pressure effect, the gas in the pneumatophore promotes steel ball in the mounting panel path of will exit and seals, the pressure of gas all acts on the diaphragm capsule, the diaphragm capsule distortion contacts the sensitive switch contact, impels the burst accident actuating of relay to report to the police; To produce pressure less when burst accident, when not reaching set point, the gas that produces in the pneumatophore can not promote will the exit path sealing, gas of steel ball in the mounting panel and discharge from bleeder port, diaphragm capsule can not be out of shape the action of collision sensitive switch, adjusts the operating pressure that spring can be set the burst accident relay; Turn on air relief cock during oiling, the air vent of the gas in the accumulator on connecting cap, air bag, mounting panel discharged; Float in the Buchholz relay grease chamber can be observed from the form hole; Probe and rocking arm can be checked float action situation, and when float sank to certain position, alarm signal was sent in the action of magnet adhesive dry reed switch; The test axle is machinery and an electric property working condition of checking the burst accident relay when not having burst accident.

Claims

1; multi-functional protection equipment for transformer; comprise housing; Buchholz relay; make the form hole of the Buchholz relay of two symmetries in lower housing portion; it is characterized in that on housing, making horizontal direction probe installing hole; make oil level indicator on top slotted eye is installed; on the housing; open port is made in the lower end; central dividing plate is installed in enclosure interior; make air vent hole at following face place on the housing near central dividing plate; and vent valve is installed on air vent hole; below being divided into enclosure interior, central dividing plate is Buchholz relay grease chamber and top for accumulator; in the Buchholz relay grease chamber, Buchholz relay is installed; in the probe aperture of horizontal direction on the housing, probe is installed; oil guide pipe is installed on central dividing plate; oil guide pipe is made " L " shape; the logical hydraulic fluid port in two ends is all towards the accumulator direction; one end is in the Buchholz relay grease chamber; one end is in accumulator; on the installation of the oil level indicator on housing slotted eye, oil level indicator is installed; on the open port in housing upper end, connecting cap is installed; make on the connecting cap burst accident alarm relay cavity is installed; the priming cup hole; the binding post hole; air vent; air vent hole; fixed bolt hole; inner chamber at connecting cap is installed the burst accident alarm relay; be screwed on connecting cap; in the priming cup hole on connecting cap priming cup is installed; in the oiling rim of a cup, sealing screw is installed; in the binding post hole, binding post is installed; superincumbent accumulator inner chamber dress can separate junction block, dry reed switch with can separate junction block and connect by lead, can separate junction block and connect with binding post by lead.

2; multi-functional protection equipment for transformer according to claim 1; it is characterized in that Buchholz relay is by the float positioning sleeve; float; magnet; rocking arm; dry reed switch is formed; make the window of symmetry on the float positioning sleeve sidewall; the window on it is corresponding with form on the housing; dry reed switch is fixed on float positioning sleeve bottom; magnet is installed on the float bottom; have the corresponding dry reed switch of float magnet end of magnet; be placed in the float positioning sleeve; rocking arm one end is installed in the upper port place of float positioning sleeve, passage port is opened in the lower end that the float positioning sleeve is fixed on the housing.

3, multi-functional protection equipment for transformer according to claim 1; it is characterized in that oil level indicator by the spacing reflector of " U " shape, ball float, support set, show glass pane, show that the window gland forms; the spacing reflector of " U " shape upper end is fixed on the housing through support set; the spacing reflector of " U " shape lower end is fixed on the central dividing plate; the spacing reflector upper and lower end of " U " shape communicates with accumulator; ball float is placed in the spacing reflector of " U " shape, shows that glass pane is fixed on the housing through showing the window gland.

4, multi-functional protection equipment for transformer according to claim 1 is characterized in that the burst accident alarm relay, is made of pneumatophore, mounting panel, test axle, diaphragm capsule, switch mounting panel, sensitive switch, connection cord; Pneumatophore is made of screw thread pad, plain cushion, nut cap, spring, air bag, and screw thread pad and plain cushion clamp the lower end of air bag, tightens fixingly with the nut cap, and spring is contained in the air bag inner chamber; Pneumatophore is installed in the burst accident alarm relay cavity of connecting cap; Make the screw that loses heart with one heart on the mounting panel, air vent hole, the test axis hole, two air vents, fixing threaded hole, center roof vent, the screw that loses heart with one heart communicates with center roof vent, steel ball is put into the screw that loses heart with one heart, the through hole screw is screwed in the screw that loses heart with one heart, leave the gap between steel ball and the through hole screw, test axle is contained in the test axis hole on the mounting panel, fix with straight pin, mounting panel after the combination is installed in the pneumatophore top, the connection cord two ends connect nut cap and the test axle in the pneumatophore respectively, air vent on the mounting panel communicates with air vent on the connecting cap, in the air vent on the mounting panel air relief cock is installed; Air vent hole on the mounting panel communicates with air vent hole on the connecting cap, and diaphragm capsule is made with elastomeric material, makes air vent hole, fixed bolt hole, air vent on it, and diaphragm capsule is installed in above the mounting panel; Make spherical concave panel on the switch mounting panel, sensitive switch installing hole, fixed bolt hole, air vent hole, air vent are made in the center, air vent hole communicates with air vent, sensitive switch is installed in the sensitive switch installing hole, the sensitive switch contact exposes spherical concave panel, the switch mounting panel is installed in above the diaphragm capsule, air vent on this moment switch mounting panel communicates with the concentric disappointing screw on the mounting panel, air vent hole on the switch mounting panel communicates with air vent hole on the mounting panel, by diaphragm capsule, the fixing threaded hole on the mounting panel is fixedly mounted on the connecting cap with screw.

5, according to claim 1,2,3,4 described multi-functional protection equipment for transformers; it is characterized in that on the sidewall of the accumulator of housing, making temperature gauge stand installing hole; on central dividing plate, make thermometer bulb seat hole; the temperature gauge stand that is shaped on inner chamber is installed in temperature gauge stand installing hole; in the temperature gauge stand, thermometer is installed; fix with thread bush; the thermometer bulb seat is installed in the thermometer bulb seat hole on central dividing plate; the temperature gauge stand is connected through the connection pipe with the thermometer bulb seat; the capillary and the thermometer bulb of thermometer are passed the connection pipe, and thermometer bulb installs to thermometer bulb seat inner chamber.

6; multi-functional protection equipment for transformer according to claim 5; it is characterized in that on central dividing plate, making limiting temperature Relay base hole; the limiting temperature Relay base that is shaped on inner chamber is installed in the limiting temperature Relay base hole; the lower end position of limiting temperature Relay base is in the bottom of Buchholz relay grease chamber; the limiting temperature relay is contained in the limiting temperature Relay base inner chamber; be fixed on the central dividing plate with thread terminal; thread terminal is connected with the limiting temperature relay; thread terminal with can separate junction block and be connected, can separate junction block and be connected with binding post.