CN209675078U - A kind of 12 arteries and veins oil immersed type contravariant transformers of motor start-up - Google Patents

Abstract

The utility model relates to 12 arteries and veins contravariant transformers of a kind of contravariant transformer more particularly to a kind of motor start-up.Including contravariant transformer ontology, three-limb core is equipped in contravariant transformer ontology, any iron core is equipped with one group of output side winding, input side winding is equipped on the outside of output side winding, input side winding includes input side winding I and input side winding II, input side winding I and II longitudinal direction of input side winding are arranged alternately on any iron core, the corresponding three groups of output side winding D of three-limb core connect, three groups of I d of input side winding connect, three groups of II y of input side winding connect, the outer upper end of contravariant transformer ontology is equipped with fuel tank cap, fuel tank cap is equipped with input transformer casing and output bushing shell for transformer, three groups of input side winding I and three group input side windings II are connect by input transformer casing with external dc power, three groups of output side windings are connect by output bushing shell for transformer with external starting device.Tthe utility model system pressure drop is small, and power consumption is low.

Description

A kind of 12 arteries and veins oil immersed type contravariant transformers of motor start-up

Technical field

The utility model relates to 12 arteries and veins contravariant transformers of a kind of contravariant transformer more particularly to a kind of motor start-up.

Background technique

Transformer can be divided into dry-type transformer, oil-immersed transformer and inflatable transformer according to insulation mode.Oil Immersion transformer device structure is compact, good cooling results, and under similar power condition, product-specific investments are lower, and performance is relatively reliable.

Current country 10kV motor start-up often uses oil immersed type auto-transformer voltage drop method, and starting current is to start motor 3-4 times, usually cause biggish pressure drop, to power grid impact it is very big.Start motor and need very big power supply capacity, and starts one Secondary power consumption is very big, and especially the small old unit of power supply capacity can frequently result in equipment component tripping.

Utility model content

The purpose of the utility model is to overcome deficiencies in the prior art, avoid motor from impacting power grid excessive, and There is provided a kind of motor start-up 12 arteries and veins oil immersed type contravariant transformers, Tthe utility model system pressure drop is small, impacts to power grid small.

In order to achieve the goal above, the technical solution adopted in the utility model is: a kind of 12 arteries and veins oil immersions of motor start-up Formula contravariant transformer, including contravariant transformer ontology, the contravariant transformer body upper part are provided with oil conservater, the oil conservater Lower section is provided with the terminal box for controlling contravariant transformer operation, and the contravariant transformer body lower part is provided with fuel outlet valve, It is provided with iron core in the contravariant transformer ontology, output side winding is provided on the iron core, the iron core is located at outlet side Input side winding is provided on the outside of winding, the iron core is three columns, is equipped with one group of output side winding and input on any iron core Side winding, the input side winding include input side winding I and input side winding II, input side winding I and defeated on any iron core Enter II longitudinal direction of side winding to be arranged alternately, corresponding three groups of output side winding D connect on iron core described in three columns, three groups of I d of input side winding It connects, three groups of II y of input side winding connect, the two-way voltage-phase that I, three group of input side winding II of input side winding described in three groups is formed Angle is 30 degree, and the outer upper end of the contravariant transformer ontology is provided with fuel tank cap, is provided with input transformer in the fuel tank cap Casing and output bushing shell for transformer, input side winding I and three group input side winding II described in three groups pass through input transformer casing It is connect with external dc power, output side winding described in three groups is connect by output bushing shell for transformer with external starting device.

In order to further realize the utility model, following technical scheme can be preferentially selected:

Preferably, output side winding described in three groups is respectively the first winding of outlet side, the second winding of outlet side, outlet side Three winding, first winding of outlet side are provided with head end A, tail end X, and second winding of outlet side is provided with head end B, tail end Y, the outlet side tertiary winding are provided with head end C, tail end Z, outlet side the first winding head end A and the outlet side tertiary winding Tail end Z is connected, and outlet side the first winding tail end X is connected with outlet side the second winding head end B, the second winding tail end Y It is connected with outlet side tertiary winding head end C, the output bushing shell for transformer is provided with three groups, the first winding of outlet side head end A, outlet side the second winding head end B, outlet side tertiary winding head end C are connected by output bushing shell for transformer and external starting device It connects.

Preferably, input side winding I described in three groups is respectively the first winding of input side I, the second winding of input side I and input The side tertiary winding I, first winding of input side I are provided with head end a1 and tail end x1, and second winding of input side I is arranged There are head end b1 and tail end y1, the input side tertiary winding I is provided with head end c1 and tail end z1, first winding of input side I Head end a1 is connect with I tail end z1 of the input side tertiary winding, the I tail end x1 of the first winding of input side and the second winding of input side I Head end b1 connection, the I tail end y1 of the second winding of input side are connect with I head end c1 of the input side tertiary winding, the input transformation Device casing I is provided with three groups, the I head end a1 of the first winding of input side, I head end b1 of the second winding of input side, input side third I head end c1 of winding is connect by input transformer casing with external dc power.

Preferably, input side winding II described in three groups is respectively the first winding of input side II, II and of the second winding of input side The input side tertiary winding II, first winding of input side II are provided with head end a2 and tail end x2, second winding of input side II is provided with head end b2 and tail end y2, and the input side tertiary winding II is provided with head end c2 and tail end z2, the input transformation Device casing II is provided with three groups, the II head end a2 of the first winding of input side, II head end b2 of the second winding of input side and input side II head end c2 of the tertiary winding is connect by input transformer casing II with external dc power, II tail of the first winding of input side Hold x2, II tail end y2 of the second winding of input side and II tail end z2 of input side tertiary winding welding.

Preferably, the heat pipe for heat dissipation is equipped in the contravariant transformer ontology, described heat pipe one end extends to inversion It is located on the outside of contravariant transformer on the outside of transformer body, on the heat pipe and is evenly arranged with multiple radiating fins.

The beneficial effects of the utility model are:

1, it is provided with contravariant transformer ontology in the utility model, fixing seat is provided in contravariant transformer ontology, it is fixed Three-limb core is uniformly installed on seat, one group of output side winding is set on any iron core, output side winding outer sheath is equipped with one Group input side winding, input side winding includes input side winding I and input side winding II, I He of input side winding on any iron core Input side winding II is longitudinal to be alternately distributed, and wherein the corresponding three groups of output side windings of three-limb core connect for D, three groups of input side windings I d connects, and three groups of II y of input side winding connect, the two-way voltage phase angle that three groups of input side windings, I, three group of input side winding II is formed It is 30 degree；The external starting device of output side winding, input side winding connect DC power supply, can effectively reduce electric motor starting band The pressure drop come, impact when reducing motor start-up to power grid；

2, it is provided with three heat pipes in the utility model, is provided with and adds positioned at contravariant transformer body exterior on three heat pipes The radiating fin of speed heat dissipation, the working fluid of heating pipe in-core are taken away heat by thermal evaporation, which is the evaporation of working fluid Latent heat, steam flow to the condensation segment of heat pipe from central passage, condense into liquid, while releasing latent heat, in the work of tube core capillary force Under, liquid reflux to evaporator section, this completes a closed circulations, heat a large amount of in contravariant transformer are taken out of inverse Become outside transformer body, this structure is compact to design, heat transfer efficiency is high.

Detailed description of the invention

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

Fig. 2 is the top view of the utility model embodiment 1.

Fig. 3 is iron core, coils arrangement top view in 1 contravariant transformer ontology of the utility model embodiment；

Fig. 4 is enlarged drawing at the embodiments of the present invention B；

Fig. 5 is iron core, coils arrangement sectional view in 1 contravariant transformer ontology of the utility model embodiment；

Fig. 6 is 1 output side winding of the utility model embodiment and input side winding scheme of installation；

Fig. 7 is 1 output side winding of the utility model embodiment, input side winding circuit connection schematic diagram；

Fig. 8 is enlarged structure schematic diagram at the utility model embodiment 1A；

Wherein: 1- pedestal, 2- contravariant transformer ontology, 3- fuel tank cap, 4- oil conservater, 5- export bushing shell for transformer, and 6- is defeated Enter bushing shell for transformer II, 7- input transformer casing I, 8- heat pipe, 9- fuel outlet valve, 11- terminal box, 12- mounting rack, 13- gas Relay, 15- output side winding, 16- input side winding, 17- insulating board, 18- oil duct, 19- insulating paper cylinder, 20- pressure relieving valve, 21- radiating fin, 52- bolt, 53- nut, 54- becket, 55- oil-feed tank, 56- shoe cream room, 57- anti-corrosive cover.

Specific embodiment

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.Transformation core in contravariant transformer ontology 2 Oil immersion in transformer oil,

Embodiment 1:

A kind of motor start-up 12 arteries and veins oil immersed type contravariant transformers, including contravariant transformer ontology 2 as shown in figures 1-8, Contravariant transformer body upper end is sealed and installed with fuel tank cap 3, is fixedly installed with mounting rack 12 on fuel tank cap side, on mounting rack Oil conservater 4 is installed, the union being connected to contravariant transformer ontology is installed on oil conservater, gas relay is installed in union 13, contravariant transformer ontology 2 is located at the terminal box 11 being equipped with below oil conservater for controlling contravariant transformer work, terminal box Controller is inside installed, temperature sensor is installed in contravariant transformer ontology, temperature sensor selects platinum resistance thermometer sensor, pt100, Liquid level sensor is installed, liquid level sensor selects capacitance level transducer LTC13-1000-CW liquidometer on oil conservater；Temperature It spends sensor, liquid level sensor, gas relay to be electrically connected with controller, be also equipped in terminal box for protecting control The terminal of device, this structure guarantee inversion convenient for being monitored in real time, being regulated and controled to the running parameter and working condition of contravariant transformer Transformer normal operation avoids that accident occurs；It is equipped in fuel tank cap 3 for adjusting contravariant transformer body interior pressure balance Pressure relieving valve 20,2 lower part of contravariant transformer ontology is equipped with fuel outlet valve 9；

Lower part is equipped with fixing seat in contravariant transformer ontology 2, is uniformly equipped with three-limb core in fixing seat, in fixing seat Insulating board 17 is installed between three-limb core, one group of output side winding 15, output side winding are set on any iron core Outer sheath is equipped with input side winding 16, and input side winding includes input side winding I and input side winding II, is inputted on any iron core Side winding I and II longitudinal direction of input side winding are alternately distributed；On any iron core between iron core and output side winding, outlet side around It is set with insulating paper cylinder 19 between group and input side winding, is respectively formed between iron core and insulating paper cylinder, winding and insulating paper cylinder There is oil duct, insulating paper cylinder oil immersion is in transformer oil；Wherein, three groups of output side windings are followed successively by outlet side from left side to right side One winding, the second winding of outlet side, the outlet side tertiary winding, the first winding of outlet side have a head end A, tail end X, outlet side second around Group has a head end B, tail end Y, and the outlet side tertiary winding has a head end C, tail end Z, outlet side the first winding head end A and outlet side third around Group tail end Z is connected, and outlet side the first winding tail end X is connected with outlet side the second winding head end B, outlet side the second winding tail end Y It is connected with outlet side tertiary winding head end C, i.e., three groups of output side winding D connect；Input side winding I include the first winding of input side I, The second winding of input side I and the input side tertiary winding I, the first winding of input side I have head end a1 and tail end x1, input side second Winding I has head end b1 and tail end y1, and the input side tertiary winding I has head end c1 and tail end z1, I head end a1 of the first winding of input side It being connect with I tail end z1 of the input side tertiary winding, I tail end x1 of the first winding of input side is connect with I head end b1 of the second winding of input side, I tail end y1 of the second winding of input side is connect with I head end c1 of the input side tertiary winding, i.e., three groups of I d of input side winding connect, input side Winding II includes the first winding of input side II, the second winding of input side II and the input side tertiary winding II, the first winding of input side II has head end a2 and tail end x2, and the second winding of input side II has head end b2 and tail end y2, and the input side tertiary winding II has head end c2 With tail end z2, II tail end x2 of the first winding of input side, II tail end y2 of the second winding of input side and II tail end of the input side tertiary winding Z2 welding, i.e., three groups of II y of input side winding connect, the two-way voltage that three groups of input side windings, I, three group of input side winding II is formed Phase angle is 30 degree；

Have in fuel tank cap and respectively corresponds peace with three groups of output side windings, three groups of input side windings, I, three group of input side winding II Output bushing shell for transformer 5, input transformer casing I 7 and the input transformer casing II 6 of dress, outlet side the first winding head end A, Outlet side the second winding head end B, outlet side tertiary winding head end C pass through output bushing shell for transformer 5 and external starting device respectively Connection；I head end a1 of the first winding of input side, I head end b1 of the second winding of input side, I head end c1 of the input side tertiary winding pass through defeated Enter bushing shell for transformer I to connect with external dc power or rectifier equipment；II head end a2 of the first winding of input side, input side second II head end b2 of winding and II head end c2 of the input side tertiary winding passes through input transformer casing II and external dc power or whole Flow device connection；After the device inversion, electric motor starting bring pressure drop can be effectively reduced, when reducing motor start-up Impact to power grid；

Be equipped in contravariant transformer ontology 2 at least three for heat dissipation heat pipe 8,8 one end of heat pipe extend to inversion become It is located at contravariant transformer outside depressor ontology 2, on heat pipe and multiple radiating fins 21, the working solution of heating pipe in-core is originally installed in vitro Body is taken away heat by thermal evaporation, which is the evaporation latent heat of working fluid, and steam flows to the condensation of heat pipe from central passage Section, condenses into liquid, while releasing latent heat, under the action of tube core capillary force, liquid reflux to evaporator section, this completes It is external to take heat a large amount of in contravariant transformer out of contravariant transformer sheet for one closed circulation, this structure is compact to design, heat transfer It is high-efficient；Pedestal 1 is installed below contravariant transformer ontology 2, the fixation device for being same as firm banking is installed on pedestal 1, Gu Determining device includes being mounted on the base bolt 52, and bolt passes through pedestal and is coated with nut 53, and nut side is socketed with becket 54, Bolt threaded one end installs in anti-corrosive cover 57, and oil-feed tank 55 is equipped on anti-corrosive cover inner sidewall, and oil-feed tank both ends are equipped with oil storage Chamber 56；This structure can be avoided or reduce corrosion of the external environment to fixed device, convenient for the installation and removal of pedestal.

The course of work of the present embodiment:

Input side winding I, input side winding II connect DC power supply or rectifier equipment, and output side winding connection is external to open Dynamic equipment, bring pressure drop when contravariant transformer can effectively reduce electric motor starting are reduced in starting process of motor to electricity The impact of net；In production application, is matched for the utility model rectifier transformer with contravariant transformer, make motor The more convenient safety of starting.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (5)

1. a kind of motor start-up 12 arteries and veins oil immersed type contravariant transformers, including contravariant transformer ontology, the contravariant transformer Body upper part is provided with oil conservater, and the terminal box for controlling contravariant transformer operation is provided with below the oil conservater, described Contravariant transformer body lower part is provided with fuel outlet valve, and iron core is provided in the contravariant transformer ontology, is arranged on the iron core There is an output side winding, the iron core, which is located on the outside of output side winding, is provided with input side winding, it is characterised in that: the iron core is Three columns are equipped with one group of output side winding and input side winding on any iron core, and the input side winding includes input side winding I With input side winding II, input side winding I and input side winding II is longitudinal is arranged alternately on any iron core, on iron core described in three columns Corresponding three groups of output side winding D connect, and three groups of I d of input side winding connect, and three groups of II y of input side winding connect, input side described in three groups The two-way voltage phase angle that I, three group of input side winding II of winding is formed is 30 degree, and the outer upper end of the contravariant transformer ontology is set It is equipped with fuel tank cap, input transformer casing and output bushing shell for transformer, the input transformer set are provided in the fuel tank cap Pipe includes input transformer casing I and input transformer casing II, and input side winding I described in three groups passes through input transformer casing I connect with external dc power, and input side winding II described in three groups is connected by input transformer casing II and external dc power It connects, output side winding described in three groups is connect by output bushing shell for transformer with external starting device, output side winding described in three groups It is connect by output bushing shell for transformer with external starting device.

2. 12 arteries and veins oil immersed type contravariant transformers of a kind of motor start-up according to claim 1, it is characterised in that: three groups of institutes Stating output side winding is respectively the first winding of outlet side, the second winding of outlet side, the outlet side tertiary winding, the outlet side first Winding is provided with head end A, tail end X, and second winding of outlet side is provided with head end B, tail end Y, the outlet side tertiary winding It is provided with head end C, tail end Z, outlet side the first winding head end A is connected with outlet side tertiary winding tail end Z, the outlet side First winding tail end X is connected with outlet side the second winding head end B, the second winding tail end Y and outlet side tertiary winding head end C It is connected, the output bushing shell for transformer is provided with three groups, outlet side the first winding head end A, outlet side the second winding head end B, outlet side tertiary winding head end C is connect by output bushing shell for transformer with external starting device.

3. 12 arteries and veins oil immersed type contravariant transformers of a kind of motor start-up according to claim 1, it is characterised in that: three groups of institutes Stating input side winding I is respectively the first winding of input side I, the second winding of input side I and the input side tertiary winding I, the input The first winding of side I is provided with head end a1 and tail end x1, and second winding of input side I is provided with head end b1 and tail end y1, described The input side tertiary winding I is provided with head end c1 and tail end z1, the I head end a1 of the first winding of input side and the input side tertiary winding I tail end z1 connection, the I tail end x1 of the first winding of input side are connect with I head end b1 of the second winding of input side, the input side Two windings, I tail end y1 is connect with I head end c1 of the input side tertiary winding, and the input transformer casing is provided with three groups, described defeated Enter I head end a1 of the first winding of side, I head end b1 of the second winding of input side, I head end c1 of the input side tertiary winding and passes through input transformer Casing I is connect with external dc power.

4. 12 arteries and veins oil immersed type contravariant transformers of a kind of motor start-up according to claim 1, it is characterised in that: three groups of institutes Input side winding II respectively the first winding of input side II, the second winding of input side II and the input side tertiary winding II are stated, it is described The first winding of input side II is provided with head end a2 and tail end x2, and second winding of input side II is provided with head end b2 and tail end Y2, the input side tertiary winding II are provided with head end c2 and tail end z2, and the input transformer casing is provided with three groups, described II head end a2 of the first winding of input side, II head end b2 of the second winding of input side and II head end c2 of the input side tertiary winding pass through input Bushing shell for transformer is connect with external dc power, the II tail end x2 of the first winding of input side, II tail end of the second winding of input side Y2 and II tail end z2 of input side tertiary winding welding.

5. 12 arteries and veins oil immersed type contravariant transformers of a kind of motor start-up according to claim 1, it is characterised in that: described inverse Become in transformer body the heat pipe being equipped with for heat dissipation, described heat pipe one end extends to contravariant transformer outer body, the heat It is located on the outside of contravariant transformer on pipe and is evenly arranged with multiple radiating fins.