CN201966052U

CN201966052U - Concatenated high-tension transformer

Info

Publication number: CN201966052U
Application number: CN2011200541057U
Authority: CN
Inventors: 秦爱玲; 高世博
Original assignee: China National Petroleum Corp; China Petroleum Logging Co Ltd
Current assignee: China National Petroleum Corp; China Petroleum Logging Co Ltd
Priority date: 2011-03-03
Filing date: 2011-03-03
Publication date: 2011-09-07
Anticipated expiration: 2021-03-03

Abstract

The utility model relates to a concatenated high-tension transformer. The concatenated high-tension transformer consists of two transformers with identical structures, wherein each transformer consists of a housing, a transformer iron core, an insulating layer, a secondary winding, a primary winding and a framework; the initial end of the primary winding of the first transformer is connected with that of the primary winding of the second transformer to form a signal input end, and the tail end of the primary winding of the first transformer is connected with that of the primary winding of the second transformer to form the other signal input end; and the tai end of the secondary winding of the first transformer is connected with the initial end of the secondary winding of the second transformer, and the initial end of the secondary winding of the first transformer is connected with the tail end of the secondary winding of the second transformer to form a pair of signal output ends. Compared with the working frequency (5 KHz) of an original single transformer, the working frequency of a high-voltage multiplexing circuit of the transformer provided by the utility model is improved to 15 KHz, and the load capacity is improved by about one time.

Description

A kind of tandem high-tension transformer

Technical field

The utility model relates to the extraordinarily employed tandem high-tension transformer of circuit prime of a kind of high pressure that is used for oil well logging instrument, physical test, testing equipment.

Background technology

In the pulsed neutron log instrument, the neutron generator volume is little, the space is limited, and implementing sealed high pressure is one of key technology.At present, the sealed high pressure technology generally adopts the voltage-multiplying circuit pattern both at home and abroad, and the design of sealed high pressure load capacity is a foundation with the index and the characteristic of neutron tube, owing to use the difference of neutron tube, the concrete mode of employing is also therefore different.

Fill the tritium technology after 150 ℃ of neutron tubes that this enterprise produces adopt, though the ambient temperature of tolerance has improved, yield is lower, wants the yield that reaches higher, needs to improve the load capacity of high pressure.

Our early production, because the index of materials such as high pressure components and parts, transformer core is lower, extraordinarily progression is more, frequency of supply is higher for its high pressure.In order to reach demand, adopt three transformers respectively to after the power supply of separately voltage-multiplying circuit, the circuit mode that these voltage-multiplying circuits are connected in series to the load capacity of high pressure.The primary and secondary of each transformer bears the voltage difference of 30kv, makes the insulation of transformer have hidden danger, occurs the fault that transformer punctures repeatedly.In scientific research thereafter, sealed high pressure is improved, adopt the mode of a monolateral multiplication of voltage of transformer, transformer only need bear 10kv with interior voltage difference, has solved the insulation hidden danger of transformer.But this practice has greatly limited the load capacity of circuit, therefore can not connect satisfactorily with existing 150 ℃ of neutron tubes.For this reason, in recent years, develop novel minor diameter high pressure technique, under the constant situation of instrument diameter, improve the load capacity of high pressure.Its key technology is a development novel high-pressure transformer, improves frequency of supply, reaches the purpose that improves load capacity, adopts transformer tandem technology to realize the raising of transformer through-put power.

Being connected in the conventional transformer for the tandem of transformer adopting winding also has precedent, but the utilization field is different with purpose on the one hand, and the mode that is adopted also is not quite similar on the other hand.Such as in electric power system, high-power transformer adopts two or more windings to carry out connection in series-parallel on a U-iron core and connects in order to reach the conversion of voltage and current; Perhaps adopting the connection in series-parallel of a plurality of windings for the requirement of high-tension transformer insulating process on a bar magnet in some special high-tension circuit connects, though these connections are a plurality of on the winding number, but magnetic loop is same, magnetic core is same, that is to say from structure to belong to a transformer.Use for the connection in series-parallel of U-iron core and not only can not reduce radial dimension and can increase package dimension on the contrary.The content that these connected modes and this patent are stated is all inequality.

The utility model content

The purpose of this utility model provides a kind of tandem high-tension transformer, with two independently, the winding connection in series-parallel of material, the identical transformer of technology connects, reach the increase through-put power, improve operating frequency, reduce radial dimension, finish the function of a transformer jointly.

Tandem high-tension transformer described in the utility model is made up of two identical in structure transformers, and two transformers are respectively by shell, transformer core, and insulating barrier, secondary winding, elementary winding and skeleton constitute; Transformer core is arranged in transformer case, and winding is wrapped in and is arranged in transformer core on the skeleton, is followed successively by insulating barrier between insulating barrier between external insulation layer, secondary winding, winding, elementary winding, skeleton and the elementary winding; The elementary winding initial end of first transformer links to each other with the elementary winding initial end of second transformer and constitutes signal input part, and the elementary winding end of first transformer links to each other with the end of the elementary winding of second transformer and constitutes another signal input part; The end of first Secondary winding of transformer links to each other with the initial end of second Secondary winding of transformer, and the end of the initial end of first transformer secondary output winding and second Secondary winding of transformer constitutes a pair of signal output part.

Guaranteeing instrument radially under the constant situation of mechanical dimension, is adopting formation high voltage supply transformer after the secondary series connection in parallel of two primary, the through-put power of transformer and area of dissipation have all increased by one times like this; Because no-load voltage ratio reduces, frequency of supply improves greatly, thereby reaches the function that connects the voltage-multiplying circuit load capacity after the raising.This technology is used in " 150 ℃ of neutron generator developments " project, and through overtesting, the operating frequency of high pressure double circuit can be brought up to 15KHz by the 5KHz of single original transformer, and load capacity has also improved about one times.

Description of drawings

A kind of tandem high-tension transformer of Fig. 1 structural representation.

Wherein: 1 shell, 2 transformer cores, 3 external insulation layers, 4 secondary winding,

Insulating barrier between 5 windings, 6 elementary windings, insulating barrier between 7 skeletons and the elementary winding, 8 skeletons.

First primary winding of A1 initial end, first primary winding of B1 end

First transformer secondary output winding of C1 initial end, first transformer secondary output winding of D1 end

Second primary winding of A2 initial end, second primary winding of B2 end

Second transformer secondary output winding of C2 initial end, second transformer secondary output winding of D2 end

Embodiment

Tandem high-tension transformer T described in the utility model is made up of two identical in structure transformer t1 and t2, and every transformer is by shell 1, transformer core 2, and insulating barrier, secondary winding 4, elementary winding 6 and skeleton 8 constitute; Transformer core is arranged in transformer case, and winding is wrapped in and is arranged in transformer core on the skeleton, is followed successively by between external insulation layer 3, secondary winding 4, winding insulating barrier 7 between insulating barrier 5, elementary winding 6, skeleton and the elementary winding; Thereafter two transformer t1 that coiling is finished are connected with t2, method is as follows: link to each other with the terminal B2 of the elementary winding of second transformer t2 another signal input part B of formation transformer T of the initial end A1 of the elementary winding of first transformer t1 and the signal input part A that becomes transformer T after the elementary initial end A2 of second transformer t2 links to each other, the terminal B1 of the elementary winding of first transformer t1.The terminal D1 of the secondary winding of first transformer t1 links to each other with the secondary winding initial end C2 of second transformer t2, the elementary C1 of first transformer t1 draws the output C that forms transformer T, and the secondary end D2 of second transformer t2 draws another output D that forms transformer T.Input A, B end and output C, the D end of transformer T have so just been formed.

Claims

1. a tandem high-tension transformer is made up of two identical in structure transformers, and two transformers are respectively by shell, transformer core, and insulating barrier, secondary winding, elementary winding and skeleton constitute; Transformer core is arranged in transformer case, and winding is wrapped in and is arranged in transformer core on the skeleton, is followed successively by insulating barrier between insulating barrier between external insulation layer, secondary winding, winding, elementary winding, skeleton and the elementary winding; The elementary winding initial end of first transformer links to each other with the elementary winding initial end of second transformer and constitutes signal input part, and the elementary winding end of first transformer links to each other with the end of the elementary winding of second transformer and constitutes another signal input part; The end of first Secondary winding of transformer links to each other with the initial end of second Secondary winding of transformer, and the end of the initial end of first transformer secondary output winding and second Secondary winding of transformer constitutes a pair of signal output part.