CN212230235U

CN212230235U - Voltage transformer composite structure

Info

Publication number: CN212230235U
Application number: CN202020911557.1U
Authority: CN
Inventors: 童家华; 童丽; 李继华; 许峻豪; 沈川
Original assignee: Chongqing Shancheng New High Voltage Transformer Co ltd
Current assignee: Chongqing Shancheng New High Voltage Transformer Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-12-25
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a voltage transformer integrated configuration, including three voltage transformer, it is three voltage transformer winding subassembly all sets up at same combination intracavity, voltage transformer includes that voltage is a line row, voltage a line row through a lead wire with the winding subassembly is connected, the winding subassembly still is connected with the second terminal. The utility model discloses with a plurality of voltage transformer combinations, subtract standard low voltage transformer integrated configuration's occupation space, adopt novel environmental protection insulating gas, electric properties preferred, good reliability, and can effectively reduce greenhouse gas's emission.

Description

Voltage transformer composite structure

Technical Field

The utility model relates to a voltage transformer especially relates to a voltage transformer integrated configuration.

Background

With the development of domestic economy, the consumption of electric energy is gradually increased, and the voltage transformer is an indispensable part in a power supply grid, so that the installation convenience and the environmental protection performance of the voltage transformer are very important.

In the common voltage transformer installation, install respectively after the shaping of single transformer, to large-scale transformer substation, the voltage transformer that needs is more, and single whole occupation space of installing respectively is great, and single voltage transformer installs respectively and need correct each voltage transformer, and it is long to consume time. Furthermore, the common insulating gas type voltage transformer usually adopts SF6, SF6 is a greenhouse gas with very high Global Warming Potential (GWP), which is about 23900 times of carbon dioxide, and the domestic power industry currently has a very large demand for SF6, so that SF6 emission or leakage is also very large, which adversely affects the atmospheric environment and increases the global warming risk.

Therefore, the technical personnel in the field are dedicated to develop a voltage transformer combined structure, a plurality of voltage transformers are combined, the integral installation of the plurality of voltage transformers is convenient, and the occupied space of the standard low-voltage transformer combined structure is reduced; the novel environment-friendly insulating gas is adopted, the electric performance is better, the reliability is strong, and the emission of greenhouse gas can be effectively reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a voltage transformer integrated configuration is provided, with a plurality of voltage transformer combinations, subtract standard low voltage transformer integrated configuration's occupation space, adopt novel environmental protection insulating gas, electric properties preferred, good reliability, and can effectively reduce greenhouse gas's emission.

In order to achieve the above object, the utility model provides a voltage transformer integrated configuration, including three voltage transformer, it is three voltage transformer winding subassembly all sets up at same combination intracavity, voltage transformer includes that the row of once working a telephone switchboard of voltage, the row of once working a telephone switchboard of voltage through a lead wire with the winding subassembly is connected, the winding subassembly still is connected with the second terminal.

Furthermore, the primary lead is arranged in the lead tube, and an insulating cavity is arranged outside the lead tube.

Furthermore, the upper end of the insulating cavity is connected with a gland, and the voltage primary wiring row is arranged on the gland. The gland is convenient for install the primary voltage wiring row and is favorable for sealing insulating gas.

Furthermore, a sealing cavity is arranged outside the winding assembly, and the sealing cavity is connected with the lower end of the insulating cavity to form a closed cavity. And the winding assembly and the primary lead are arranged in the closed chamber, so that the insulation grade is improved.

Furthermore, a spring is sleeved on the lead tube close to the winding assembly. The lead pipe is provided with the spring outward and is favorable to protecting the lead pipe, prevents that the lead pipe from suffering destruction in transportation and the working process.

Further, a sealing flange is arranged between the sealing cavity and the insulating cavity. The sealing flange is convenient for connecting the sealing cavity with the insulating cavity and is also beneficial to sealing insulating gas.

Furthermore, the insulating cavity is filled with insulating gas perfluoro-penta-carbon ketone, and the pressure of the insulating gas is 0.3 Mpa-0.6 Mpa. The use of the perfluoro penta-carbon ketone insulating gas can effectively reduce the emission of greenhouse gases, has better environmental protection performance, and can further enhance the insulating performance of the voltage transformer by controlling the pressure of the insulating gas.

Further, an insulator is arranged outside the insulating cavity. The insulator not only can improve the external insulation performance of the mutual inductor, but also is beneficial to preventing the external insulation performance of the mutual inductor from being damaged in rainy days or icing.

Further, the gland and the flange are provided with sealing rings. The sealing ring is favorable for sealing the insulating gas and has less leakage.

Furthermore, the sealed cavity is also provided with an insulating gas density controller and an insulating gas inflation joint. The insulating gas density controller is used for controlling the density of the insulating gas, so that the insulating gas is kept within a reasonable range, and the insulating gas inflation connector is convenient for adding the insulating gas into the insulating cavity.

The utility model has the advantages that: the utility model provides a combination of a voltage transformer, a plurality of voltage transformer winding components are arranged in the same combined cavity, the occupied space can be effectively reduced, and the installation is rapid and convenient; the novel insulating gas perfluoropentacarbone (C5F 10O) can effectively reduce the emission of greenhouse gases, and is energy-saving and environment-friendly; the pressure type insulating gas is adopted, so that the insulating property of the voltage transformer is improved, and the electrical property is better; a plurality of voltage transformers can work independently, and influence is less each other, and the reliability is strong.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a voltage transformer according to an embodiment of the present invention.

Fig. 3 is a schematic side view of a voltage transformer according to an embodiment of the present invention.

Fig. 4 is a schematic view of a mounting arrangement according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, a combination of voltage transformers comprises three voltage transformers 1, winding assemblies 8 of the three voltage transformers 1 are all arranged in the same combination cavity 14, each voltage transformer 1 comprises a primary voltage wiring bar 9, the primary voltage wiring bar 9 is used for being connected with high voltage to be tested, the primary voltage wiring bar 9 is connected with the winding assemblies 8 through a primary lead, and the winding assemblies 8 are connected with a second binding post 12 through a secondary lead.

The primary lead is disposed in the lead tube 10, and the lead tube 10 can shield the arc generated by the high voltage, thereby reducing the damage to the surrounding environment. The position of the lead tube 10, which is close to the winding assembly 8, is sleeved with a spring 11, and the spring 11 plays a role in protecting the lead tube 10 when the lead tube 10 contracts or extends, so that damage to the lead tube 10 is reduced. An insulating cavity 5 is arranged outside the lead tube 10, insulating gas perfluoropentacarbon (C5F 10O) is filled in the insulating cavity 5, the perfluoropentacarbon (C5F 10O) is non-flammable and does not destroy the ozone layer, the insulating cavity has ultra-low global warming potential (GWP is approximately equal to 1), the existence time in the atmosphere is about 16 days, and the electrical insulation strength is 2.1 times of SF6, and the insulating cavity is one of the most potential insulating gases for replacing sulfur hexafluoride discovered in recent years. The utility model discloses well insulating gas's pressure is 0.3Mpa ~ 0.4Mpa, and insulating gas's pressure adopts 0.4Mpa, 0.5Mpa, 0.6Mpa also can reach in other embodiments the utility model discloses the effect. The insulator 4 is arranged outside the insulating cavity 5, and the insulator 4 is in an umbrella skirt shape, so that the external insulating property of the mutual inductor can be improved, and the external insulating property of the mutual inductor can not be damaged in rainy days or icing. The upper end of the insulating cavity 5 is connected with a gland 13, and the voltage primary wiring row 9 is arranged on the gland 13. The gland 13 is not only beneficial to the installation of the primary voltage wiring bar 9, but also beneficial to the disassembly, and is convenient for sealing the insulating gas.

A sealing cavity 7 is arranged outside the winding assembly 8, the sealing cavity 7 is connected with the lower end of the insulating cavity 5 to form a sealed cavity, a whole cavity is formed, the insulating gas is conveniently controlled integrally, a sealing flange 6 is arranged between the sealing cavity 7 and the insulating cavity 5, a sealing ring is arranged on each of the gland 13 and the flange 6, and the sealing cavity 7 is further provided with an insulating gas density controller 2 and an insulating gas inflation connector 3. The insulating gas pressure value is too low and can reduce insulativity, and insulating gas density controller 2 can send alarm signal for the control room, in time inspects the product or supplyes insulating gas to reach the gas pressure value of safe operation. The insulating gas charging connector 3 can be used for adding insulating gas and also can be used for recovering insulating gas during maintenance.

The utility model discloses the theory of operation: with voltage transformer 1 aggregate erection on mounting bracket 15, mounting bracket 15 comprises two mirror symmetry's L type panel, will make up chamber 14 fixed, makes up 14 width slightly less than the width of mounting bracket 15 in the chamber, because three voltage transformer 1 is aggregate erection in same combination chamber 14, occupation space is less. When in installation, the combined cavity 14 only needs to be integrally hoisted, and the method is simple, quick and convenient to install. The voltage transformer 1 adopts novel insulating gas perfluoropentacarbon (C5F 10O), and the assembly of the voltage transformer 1 needs to be carried out in a clean room with the cleanliness of 10 ten thousand grades, and the moisture in the air needs to be strictly controlled. The sealed cavity 7 is vacuumized through the insulating gas inflation connector 3, and insulating gas is introduced when the sealed cavity is in a vacuum state, so that the pressure value of the insulating gas density controller 2 is 0.3 Mpa-0.4 Mpa. After the primary voltage wiring row 9 is connected with the high voltage to be measured, the high voltage is led to the winding assembly 8, the high voltage is output through a secondary lead after being transformed through electromagnetic induction, the secondary lead is connected with the second wiring terminal 12, a standard low voltage value is output, the pressure change of the insulating gas is observed, and the deviation range of the pressure value of the insulating gas is not more than 0.05Mpa within the specified temperature difference range.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a voltage transformer integrated configuration which characterized by: including three voltage transformer (1), it is three voltage transformer (1) winding subassembly (8) all sets up in same combination chamber (14), voltage transformer (1) is including the primary wiring row of voltage (9), the primary wiring row of voltage (9) through a lead wire with winding subassembly (8) are connected, winding subassembly (8) still are connected with second terminal (12).

2. A voltage transformer assembly as claimed in claim 1, wherein: the primary lead is arranged in a lead tube (10), and an insulating cavity (5) is arranged outside the lead tube (10).

3. A voltage transformer assembly as claimed in claim 2, wherein: the upper end of the insulating cavity (5) is connected with a gland (13), and the voltage primary wiring row (9) is arranged on the gland (13).

4. A voltage transformer assembly as claimed in claim 3, wherein: a sealing cavity (7) is arranged outside the winding assembly (8), and the sealing cavity (7) is connected with the lower end of the insulating cavity (5) to form a closed cavity.

5. A voltage transformer assembly as claimed in claim 2, wherein: and a spring (11) is sleeved on the lead tube (10) close to the winding assembly (8).

6. The voltage transformer combination as claimed in claim 4, wherein: and a sealing flange (6) is arranged between the sealing cavity (7) and the insulating cavity (5).

7. A voltage transformer assembly as claimed in claim 2, wherein: the insulating cavity (5) is filled with insulating gas perfluoro-pentacarbone, and the pressure of the insulating gas is 0.3 Mpa-0.6 Mpa.

8. A voltage transformer assembly as claimed in claim 2, wherein: an insulator (4) is arranged outside the insulating cavity (5).

9. The voltage transformer combination as claimed in claim 6, wherein: the gland (13) and the flange (6) are provided with sealing rings.

10. The voltage transformer combination as claimed in claim 4, wherein: the sealed cavity (7) is also provided with an insulating gas density controller (2) and an insulating gas inflation joint (3).