CN-224215144-U - Dry gas double-channel generating device of high-altitude transformer

CN224215144UCN 224215144 UCN224215144 UCN 224215144UCN-224215144-U

Abstract

The utility model discloses a dry gas double-channel generating device of a high-altitude transformer, which comprises two gas injection manifolds, a collecting pipe, split pipes and gas supply units, wherein the two gas supply units are arranged in parallel, the two gas supply units are respectively connected with the gas inlet ends of the two split pipes, the gas outlet ends of the two split pipes are connected to the collecting pipe, the gas injection manifolds comprise two gas injection branch pipes and a gas injection main pipe, one end of the gas injection main pipe is used as a gas outlet for injecting gas into a converter, the gas outlet ends of the two gas injection branch pipes are connected with the other end of the gas injection main pipe, the gas inlet ends of the two gas injection branch pipes are connected with the collecting pipe, and split control valves are respectively arranged on the two gas injection branch pipes. The utility model adopts the design of the double channels and is matched with the shunt control valve, the shunt control valve ensures that dry gas enters the converter transformer at stable pressure and dew point through controlling the flow and the pressure, and the influence on the installation of the transformer when equipment is in fault can be reduced.

Inventors

MIAO GUOLI
LI DI
WANG YALIN
Lu Linjing
CHEN RUIFENG
GAO SHITAO
HUANG WENYI
LV XIAOHAO
ZHANG YONGCHAO
Chen Zonglei
YANG KAIWEN
CHANG XIAOLIANG

Assignees

河南送变电建设有限公司

Dates

Publication Date: 20260508
Application Date: 20250725

Claims (5)

1. The utility model provides a high altitude transformer dry gas binary channels generating device which characterized in that includes gas injection manifold, shunt tubes and air feed unit: The two air supply units are arranged in parallel, are respectively connected with the air inlet ends of the two shunt pipes, and the air outlet ends of the two shunt pipes are connected to the collecting pipe; The gas injection manifold comprises two gas injection branch pipes and a gas injection main pipe, wherein one end of the gas injection main pipe is used as a gas outlet for injecting gas into the converter transformer, the gas outlet ends of the two gas injection branch pipes are connected with the other end of the gas injection main pipe, the gas inlet ends of the two gas injection branch pipes are connected with the collecting pipe, and the two gas injection branch pipes are respectively provided with a flow dividing control valve.
2. The dry gas dual-channel generating device of high-altitude transformer according to claim 1, wherein pressure pumps are respectively arranged on the two gas injection branch pipes.
3. The dry gas dual-channel generating device of the high-altitude transformer according to claim 2, wherein a flow monitor is arranged on the collecting pipe.
4. The dry gas dual-channel generating device of the high-altitude transformer according to claim 1, wherein two ends of the collecting pipe are closed, three connectors are sequentially arranged on the pipe body of the collecting pipe at intervals along the length direction, one connector close to the gas tank is used for being connected with the gas outlet ends of the two split pipes, and the other two connectors are respectively connected with the gas inlet ends of the two gas injection branch pipes.
5. The dry gas dual-channel generating apparatus of high altitude transformer of claim 1, wherein the gas supply unit is a gas tank.

Description

Dry gas double-channel generating device of high-altitude transformer Technical Field The utility model relates to the technical field of converter station installation in the power industry, in particular to a dry gas dual-channel generating device of a high-altitude transformer. Background The converter transformer injection dry air process requires that qualified air is injected into the converter transformer through a dry air generator, and along with the wide application of extra-high voltage direct current transmission, the converter transformer is used as core equipment to bear higher voltage and current, the injection dry air quality directly influences the insulation performance of a sleeve and a winding, and the safety of a power grid is threatened. The converter transformer injection dry air process generally comprises: And in the internal inspection stage, when the converter transformer body is exposed to air (such as sleeve installation and winding inspection), dry air is injected through a special pipeline, and internal micro-positive pressure (the pressure is about 0.01-0.03 MPa) is maintained, so that moisture invasion is prevented. And in the air breaking and standing stage, after the vacuum oiling or drying process is finished, the vacuum is slowly released by using dry air, so that the air is prevented from directly entering into a vacuum container to cause insulation moisture (for example, after vapor phase drying, the air is broken by using dry air according to the process requirement). And in the sealing test stage, before oiling or after overhauling, filling dry air into the oil tank and accessories to 0.03MPa, and maintaining the pressure for 24 hours to test the tightness (such as inflating the breather valve of the oil storage cabinet). Therefore, the injection of dry air in the converter transformer mounting process is a key link, and the insulation performance and the operation reliability of the equipment are directly affected. At present, the converter transformer injection dry air process is mainly directly injected through an air generator, and equipment mechanical failure rate is high in high-altitude areas, and pressure and dew point of the dry air are often insufficient, so that the installation of a transformer is affected. Disclosure of utility model The utility model provides a dry gas double-channel generating device of a high-altitude transformer, which aims to solve the problems in the prior art. In order to solve the technical problems, the utility model adopts the following technical scheme: A dry gas double-channel generating device of a high-altitude transformer comprises a gas injection manifold, a collecting pipe, a shunt pipe and a gas supply unit: The two air supply units are arranged in parallel, are respectively connected with the air inlet ends of the two shunt pipes, and the air outlet ends of the two shunt pipes are connected to the collecting pipe; The gas injection manifold comprises two gas injection branch pipes and a gas injection main pipe, wherein one end of the gas injection main pipe is used as a gas outlet for injecting gas into the converter transformer, the gas outlet ends of the two gas injection branch pipes are connected with the other end of the gas injection main pipe, the gas inlet ends of the two gas injection branch pipes are connected with the collecting pipe, and the two gas injection branch pipes are respectively provided with a flow dividing control valve. Preferably, pressure pumps are respectively arranged on the two gas injection branch pipes. Preferably, a flow monitor is arranged on the collecting pipe. Preferably, the two ends of the collecting pipe are closed, three interfaces are sequentially arranged on the pipe body of the collecting pipe at intervals along the length direction, one interface close to the gas tank is used for being connected with the gas outlet ends of the two split pipes, and the other two interfaces are respectively connected with the gas inlet ends of the two gas injection branch pipes. Preferably, the air supply unit is a gas tank. The utility model has the beneficial effects that: 1. The utility model adopts the design of double channels and is matched with the shunt control valve, and the shunt control valve ensures that dry gas enters the converter transformer at stable pressure and dew point through controlling the flow and the pressure. When the gas tank or the pressure pump on one side fails, the shunt control valve compensates the pressure loss on the other side through the flow control valve by accurate control pressure, and ensures that the pressure and the dew point of the dry gas are stable, thereby reducing the influence on the installation of the transformer when equipment fails. 2. The utility model is also provided with a flow monitor for data analysis and state monitoring, and when the dry air does not meet the requirement, the flow monitor performs data analysis and state monitoring,