CN2159609Y

CN2159609Y - Capacitive tube

Info

Publication number: CN2159609Y
Application number: CN 93236784
Authority: CN
Inventors: 洪邦明
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-06
Filing date: 1993-05-06
Publication date: 1994-03-23
Anticipated expiration: 2003-05-06

Abstract

The utility model relates to a condenser type sleeve tube. The utility model comprises an oil tank 1, an upper metal bottom board 2, a lower metal bottom board 6 and a sleeve tube, the sleeve tube is composed of an upper porcelain sleeve tube 3, a lower porcelain sleeve tube 5 and a coupling sleeve tube 4, on a condenser core 10, the coupling sleeve 4 is arranged between the upper porcelain sleeve tube 3 and the lower porcelain sleeve tube 5 by a flange 13, 2-6 current mutual inductors are enveloped andarranged in the coupling sleeve tube 4, a secondary winding 11 make the utility model can be used as the current mutual inductor, a ring current mutual inducted winding and an oil-impregnated paper sleeve tube are formed into one product, the utility model not only can be used as the high-voltage through and ground metal casing, but also can be used as the current mutual inductor, the leakage reactance is small, the cost is low, and the utility model can replace the independent type current mutual inductor.

Description

Capacitive tube

The utility model relates to high-voltage electrical equipment, is in particular a kind of oil-paper condenser-type terminal.

Oil-paper condenser-type terminal or the wall pipe of existing 60KV～500KV, as required, need join the ring current transformer winding of metallic seal sleeve in addition in addition, can form current transformer jointly, the current transformer of this form is when primary current is lower than 750A, certainty of measurement is lower than 0.5 grade, and its load capacity is low, the cost height.

But the purpose of this utility model is exactly the Oil-impregnated Paper Condenser Bushing in History of a kind of double as current transformer of designing in order to address the aforementioned drawbacks.

Technical solution of the present utility model is as follows:

A kind of condenser-type terminal, it includes Oil Tank, last metal base plate, last porcelain bushing, coupling sleeve, following porcelain bushing, following metal base plate, upper wiring board, following terminal block, contact tube, capacitance core, on contact tube, be surrounded with concentric tandem capacitance graded bushing core, the not layer electrode of capacitance core drawn from the side of coupling sleeve, is provided with Oil Tank in the capacitance core upper end, is with porcelain bushing at capacitance core place on the contact tube, coupling sleeve, the sleeve pipe that following porcelain bushing is formed, on capacitance core, on, be connected with coupling sleeve by flange between the following porcelain bushing, be packaged with a secondary winding in current transformer in the coupling sleeve, the outlet of secondary winding is drawn in the secondary connection box of the side of coupling sleeve.

Advantage of the present utility model is ring current transformer winding and oilpaper sleeve pipe integrator, secondary winding directly is enclosed within on the capacitor core of Oil-impregnated Paper Condenser Bushing in History, be sealed in the coupling sleeve of oilpaper sleeve pipe, at the sleeve pipe that passes the grounded metal shell as high pressure simultaneously, its primary current is lower than the 750A certainty of measurement can reach 0.5 grade, and majority can reach 0.2 grade, and the tool leakage reactance is little, the characteristics that cost is low, its primary current are 100～3150A, and rated voltage is 60KV～500KV.

The utility model is further described as follows below by accompanying drawing:

Fig. 1 is the utility model structural representation.

As shown in Figure 1, during the utility model work, wrapped cable paper on the contact tube 9 of a given size at first, be involved in multi-step formula metal electrode in the middle of the cable paper, form concentric series capacitor formula capacitance graded bushing core 10, capacitance core 10 is inserted by last porcelain bushing 3, coupling sleeve 4, following porcelain bushing 5 connects in the sleeve pipe that forms by flange 13 successively, and in coupling sleeve 4, being packaged with 4 secondary winding in current transformer 11, the number of current transformer also can be 2,3,4,5,6 and requires definite according to difference.Its lead-in wire is drawn in the secondary connection box 12 of the side of coupling sleeve 4; the not layer electrode of capacitance core 10 drawn from the side of coupling sleeve 4; on capacitance core 10 sleeve pipes; the lower end is provided with; following metal base plate 2; 6; and help brute spring by contact tube 9 nationalitys they are compressed; in case leakage of oil; Oil Tank 1 on the last metal base plate 2 changes in order to the pressure that the thermal expansion shrinkage that cushions oil is produced; because ring current mutual inductance winding and oilpaper sleeve pipe are integrated and become a product; both can pass the grounded metal shell as high pressure; making current transformer again uses; when the utility model is done the sleeve pipe time spent; the upper end terminal block 7 of contact tube 9 passes to the high pressure that enters; its lower end terminal block 8 output high pressure; because the insulating effect of capacitance core 10; sleeve pipe passes the ground connection thing; coupling sleeve 4 is idiostatic with the ground connection thing; be used as the instrument transformer time spent; it is primary current that one terminated line plate 7 of contact tube 9 passes to high voltage and current; it is secondary current and the output output of passing through secondary winding that secondary winding 11 in the coupling sleeve 4 induces corresponding low-voltage current; for electric current; the usefulness of electric energy measurement and relaying protection, the utility model can be divided into transformer and use and two classes of using through walls.Its primary current is 100～3150A, on the secondary winding in current transformer 2～6, rated voltage is 60KV～500KV.

Claims

1, a kind of condenser-type terminal, it includes Oil Tank 1, last metal base plate 2, last porcelain bushing 3, coupling sleeve 4, following porcelain bushing 5, following metal base plate 6, upper wiring board 7, following terminal block 8, contact tube 9, capacitance core 10, on contact tube 9, be surrounded with concentric tandem capacitance graded bushing core 10, the not layer electrode of capacitance core 10 drawn from the side of coupling sleeve 4, is provided with Oil Tank 1 in capacitance core 10 upper ends, it is characterized in that being with porcelain bushing 3 at capacitance core 10 places on the contact tube 9, coupling sleeve 4, the sleeve pipe that following porcelain bushing 5 is formed, on capacitance core 10, on, following porcelain bushing 3, be connected with coupling sleeve 4 by flange 13 between 5, be packaged with 2-6 secondary winding in current transformer 11 in the coupling sleeve 4, the outlet of secondary winding 11 is drawn in the secondary connection box 12 of the side of coupling sleeve 4.

2, condenser-type terminal according to claim 1 is characterized in that being encapsulated in the current transformer in the coupling sleeve 4, and secondary winding 11 can be 2,3,4,5,6.