CN204593568U - A kind of transformer station's house heating system based on power transformer loss - Google Patents

Abstract

The utility model relates to a kind of transformer station's house heating system based on power transformer loss, comprise transformer and transformer cooler, oil tank of transformer is provided with in transformer, the port of export of oil tank of transformer is connected by pipeline with the arrival end of transformer cooler, the arrival end of oil tank of transformer and transformer cooler form oil circulation loop, heating heat-exchanger is also provided with delivery port and water inlet, and heating heat-exchanger forms water-flow circuit by delivery port and water inlet and connecting line and a radiator.The utility model utilizes oil to-water heat exchanger to substitute heating boiler, by utilizing transformer energy consumption for transformer station's house heat supply, not only without any pollution, special messenger is not needed to take care of, and also having good energy-saving effect, rough estimate can economize on electricity 288000 degree in North China for warm season transformer station.

Description

A Substation House Heating System Based on Power Transformer Loss

technical field

The utility model belongs to the field of heating equipment and relates to the utilization of waste heat, in particular to a heating system for substation houses based on the loss of power transformers.

Background technique

Since most large substations are built in the suburbs, the heating of work and rest places in winter must be solved by itself. At present, the heating sources used in substations mainly include: coal-fired boilers, electric boilers, electric heaters, etc. If coal-fired boilers are used for heating, it will not only pollute the environment, but also require special care. And adopt electric boiler and electric radiator to heat though more environmental protection, also do not need special person to take care of, but will consume a large amount of electric energy. If the loss of large power transformers can be utilized, not only the heating requirements can be met, but also energy saving and environmental protection.

Taking a manned 220kV substation as an example, the design no-load loss of a 420MV three-phase power transformer is 242kW, the design load loss is 868kW, and the heating load of the working and rest places of the substation is about 120kW in winter, so as long as the A small part of the transformer losses can be utilized to meet the heating power requirements. Normally, it is required that the oil temperature on the top layer of the transformer should not exceed 75°C. In the non-heating season, the oil temperature at the outlet of the transformer is generally 45°C to 70°C during operation. In winter, the transformer oil temperature will be lower when the cooler is put into use. If you try to reduce the cooling power of the cooler, you can get the oil temperature that meets the heating needs. If it is assumed that the difference between the outlet ports of the heat exchanger is as high as 10°C, 35°C to 60°C can be obtained through the heat exchanger. In fact, as long as hot water at 30°C to 40°C can be provided, the needs of radiant floor heating can be well met, and the indoor temperature can be maintained at 23°C to 28°C. Therefore, using the loss of power transformers for heating can meet the heating needs of substations.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a heating system for substation houses based on power transformer loss with high recognition rate and good applicability.

The technical scheme that the utility model adopts is:

A heat supply system for substation houses based on power transformer loss, including a transformer and a transformer cooler. A transformer oil tank is installed inside the transformer. The outlet of the transformer oil tank is connected to the inlet of the transformer cooler through a pipeline. The inlet of the transformer oil tank is connected to The outlet end of the transformer cooler is connected by a pipeline, which is characterized in that: on the connecting pipeline between the outlet end of the transformer oil tank and the inlet end of the transformer cooler, and on the connecting pipeline between the inlet end of the transformer oil tank and the outlet end of the transformer cooler, there are respectively installed A three-way valve, each three-way valve includes three ports, two of which are connected to the original oil inlet and oil outlet ports on the pipeline, the system also includes a heating heat exchanger, the The heating heat exchanger is provided with an oil inlet and an oil outlet, wherein the oil outlet of the heating heat exchanger is connected to the inlet of the transformer oil tank and the outlet of the transformer cooler, and the remaining interface of the three-way valve is passed through the pipeline. Connection, the oil inlet of the heating heat exchanger is connected with the three-way valve on the pipeline connecting the outlet of the transformer oil tank and the inlet of the transformer cooler. The heating heat exchanger forms a water circulation loop through the water outlet, the water inlet and the connecting pipeline with a radiator.

Moreover, the radiator is a low-temperature hot water floor radiation radiator.

Moreover, an expansion tank and a circulating water pump are respectively installed on the water outlet pipeline of the heating heat exchanger.

Moreover, a circulating oil pump is installed on the connecting pipeline between the inlet end of the transformer oil tank and the outlet end of the transformer cooler.

Moreover, the heating heat exchanger is provided with an upper tube sheet and a lower tube sheet, both of which are double-layer tube sheets, and the heating surface tubes are made of brass tubes.

The utility model advantage and positive effect are:

1. This utility model uses an oil-water heat exchanger to replace the heating boiler, and uses the energy consumption of the transformer to provide heat for the substation house. Not only does it not cause any pollution, it does not require special care, and it also has a good energy-saving effect. It is roughly estimated that in North China A substation can save 288,000 degrees of electricity in the district heating season.

2. The heating heat exchanger in the utility model adopts a straight-tube surface heat exchanger whose upper and lower tube sheets are double-layer tube sheets, and the heating surface tubes are made of brass tubes to ensure that water will not leak to the oil side.

3. The heating medium of the heating heat exchanger in the utility model adopts distilled water to ensure that the heat exchanger will not be scaled and corroded. Even if the transformer leaks, it will not be transmitted to the user side, which is beneficial to the safety of the transformer and users.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view (sectional view) of the heating heat exchanger in the utility model.

Detailed ways:

The utility model will be further described in detail below in conjunction with the accompanying drawings. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

A heat supply system for substation houses based on power transformer loss, including a transformer 1 and a transformer cooler 2, a transformer oil tank is installed inside the transformer, the outlet of the transformer oil tank is connected to the inlet of the transformer cooler through a pipeline, and the inlet of the transformer oil tank The end is connected with the outlet end of the transformer cooler through a pipeline.

The innovation of the utility model is:

A three-way valve 8 and 9 are respectively installed on the connecting pipeline between the outlet of the transformer oil tank and the inlet of the transformer cooler and the connecting pipeline between the inlet of the transformer oil tank and the outlet of the transformer cooler, and each three-way valve includes Three interfaces, two of which are connected to the original oil inlet and outlet nozzles on the pipeline. The system also includes a heating heat exchanger 3, which is provided with an oil inlet 15 And the oil outlet 13, wherein, the oil outlet of the heating heat exchanger is connected with the remaining interface of the three-way valve on the pipeline connecting the inlet port of the transformer oil tank and the outlet port of the transformer cooler through the pipeline, and the oil inlet of the heating heat exchanger The remaining interface of the three-way valve on the pipeline connecting the outlet of the transformer oil tank and the inlet of the transformer cooler is connected through the pipeline. The heating heat exchanger is also provided with a water outlet 10 and a water inlet 11. The water inlet, the water inlet and the connecting pipeline form a water circulation loop with a floor radiation radiator 4 .

An expansion tank 5 and a circulating water pump 7 are respectively installed on the water outlet pipeline of the heating heat exchanger.

A circulating oil pump 6 is installed on the connecting pipeline between the inlet end of the transformer oil tank and the outlet end of the transformer cooler.

The heating heat exchanger is provided with an upper tube sheet 12 and a lower tube sheet 14, both of which are double-layer tube sheets, and the heating surface tubes are brass tubes to ensure that water will not leak to the oil side.

Due to the limitation of transformer oil temperature, the temperature of hot water for heating usually does not exceed 70°C, so the user's radiator adopts a low-temperature floor radiator. The radiator not only has good heating effect, but also is safe and hygienic.

Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications can be made without departing from the spirit and scope of the utility model and the appended claims. It is possible, therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims (5)

1. A heating system for substation houses based on power transformer loss, including a transformer and a transformer cooler, a transformer oil tank is arranged in the transformer, the outlet of the transformer oil tank is connected with the inlet of the transformer cooler through a pipeline, and the inlet of the transformer oil tank end and the outlet end of the transformer cooler are connected by pipelines, which are characterized in that: on the connecting pipeline between the outlet end of the transformer oil tank and the inlet end of the transformer cooler, and on the connecting pipeline between the inlet end of the transformer oil tank and the outlet end of the transformer cooler A three-way valve is installed, and each three-way valve includes three ports, two of which are connected to the original oil inlet and oil outlet ports on the pipeline. The system also includes a heating heat exchanger , the heating heat exchanger is provided with an oil inlet and an oil outlet, wherein the oil outlet of the heating heat exchanger is connected to the remaining interface of the three-way valve on the pipeline connecting the inlet of the transformer oil tank and the outlet of the transformer cooler. Pipeline connection, the oil inlet of the heating heat exchanger is connected with the outlet port of the transformer oil tank and the inlet port of the transformer cooler, and the remaining interface of the three-way valve is connected through the pipeline. The water inlet, the heating heat exchanger form a water circulation loop through the water outlet, the water inlet and the connecting pipeline with a radiator. 2. The heating system for substation houses based on power transformer loss according to claim 1, characterized in that: the radiator is a low-temperature hot water floor radiation radiator. 3. The heating system for substation houses based on power transformer loss according to claim 1, characterized in that: an expansion tank and a circulating water pump are respectively installed on the water outlet pipeline of the heating heat exchanger. 4. The heating system for substation houses based on power transformer loss according to claim 1, characterized in that a circulating oil pump is installed on the connecting pipeline between the inlet of the transformer oil tank and the outlet of the transformer cooler. 5. The heating system for substation houses based on power transformer loss according to claim 1, characterized in that: an upper tube sheet and a lower tube sheet are arranged in the heating heat exchanger and both are double-layer tube sheets, and the heating surface The tube is a brass tube.