RU188572U1 - Oil Transformer Air Dryer - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used for drying air in the expander induction apparatus, in particular a transformer. A dehumidifier for the oil transformer, containing a drainage container having at least one inlet for dried air and at least one outlet for dry air; absorbent agents contained in the specified drying container and suitable for drying the air entering from the outside; heating means placed inside said drying container suitable for regenerating said absorbing means, detector means operatively connected to the heating means and suitable for determining the saturation state of said absorbent means in which said detector means contain at least one sensor and contain a direction determining system air flow consisting of the first temperature sensor, the second temperature sensor, the heating element, pa located between them on a dielectric substrate, mounted on the outlet aperture along the axis of the direction of air movement, and the controller associated with the heating element to which current is constantly or temporarily supplied, the controller compares the two temperature sensors, and the device additionally contains two plates right, made U-shaped and located on the sides in such a way that hold the lid and bottom. The technical problem is to reduce the amount of moisture entering the expand The fuel tank is in the regeneration mode of the moisture-absorbing mass. The technical result is to provide the ability to control the flow of air in the outlet through the use of a system for determining the direction of air flow.

Description

Technical field

The invention relates to the field of electrical engineering and can be used for drying air in the expander of an induction apparatus, in particular a transformer.

The level of technology

Known analogue of US 20060162304 (A1) - 07/27/2006. The air dryer for the electrical air intake has an outer wall of the housing and a floor of a material with high thermal conductivity, covering the outer wall of the housing down, having a funnel-shaped inner surface tapering down, formed by a central opening opening down and having a rounded edge where the surface meets the port. The inner air-permeable body inside the outer wall of the body holds the moisture-absorbing mass in the inner body, so that air sucked through the hole can pass through the mass and then into the space between the inner and outer bodies. The humidity sensor between the enclosures and the heater is in mass connected to the controller, which supplies power to the sensor and prepares moisture from the mass so that moisture condenses on the floor and passes through the edge through the port.

The reasons for which it is impossible to achieve the technical result is that the air at the time of regeneration can mix with the air in the pipe and thereby get into the expansion tank of the transformer. Mixing may occur due to the lack of information on the direction of air flow from the equipment to the dryer.

A known device according to patent EP 131312 (A) - 05/21/2003, which has a capacity with an air-permeable housing of the absorbent moisture, regenerated by heating from a saturated state of the absorbent. The oil receiver is connected to the air outlet from the vessel and contains an oil bath through which the dehydrated air passes. The control unit shows the moisture content, and the heater is located to heat the body to regenerate the absorbent.

It is also known the invention "Advanced air dryer, designed for oil expansion tanks used in electrical equipment" (RU # 2463099, publ. 10.10.12) in which it is proposed to use a strain gauge to determine the moisture content of the moisture-absorbing mass, the alignment of the outlet with the cylindrical body, as well as that the outlet goes inside the cartridge at least a little.

The reasons for which it is impossible to achieve the technical result is that it is impossible to control the direction of air flow from the equipment to the dryer.

The closest analogue taken for the prototype is the invention according to patent No. 2463099 advanced dryer for air drying, designed for oil expansion tanks used in electrical equipment, containing:
a drainage container having at least one inlet for dried air and at least one outlet for dry air;
absorbent agents contained in the specified drying container and suitable for drying the air entering from the outside; heating means placed inside said drying container suitable for regenerating said absorbing means, detector means operatively connected to the heating means and suitable for determining the saturation state of said absorbing means in which said detector means contain at least one sensor connected to said drying container and suitable for measuring the degree of drying of these absorbent means, characterized in that specified first sensor comprises a strain sensor or tension compression, stretching or converts the applied force into a change in electrical resistance that is connected via an electrical connection to the power source and connected to said drainage container fastening means.

The reasons for which it is impossible to achieve the technical result is that it is impossible to control the direction of air flow from the equipment to the dryer.

Disclosure of the essence of the utility model

The technical problem is to reduce the amount of moisture entering the expansion tank in the regeneration mode desiccant mass.

The technical result is to provide the ability to control the flow of air in the exhaust hole through the use of a system for determining the direction of air flow.

The technical result is achieved by the fact that, in a known solution, a system for determining the direction of air flow is installed, consisting of a temperature sensor of the first, temperature sensor of the second heating element located between them on a dielectric substrate, mounted on an outlet in the direction axis of air movement and a controller associated with the heating an element to which current is constantly or temporarily supplied, while the controller compares the values of two temperature sensors, and the device It contains two plates left and right, made U-shaped and located on the sides in such a way that hold the lid and bottom.

Description of the drawings

The essence of the technical solution is illustrated by a sketch, where:

1. cylindrical outer wall;

2. moisture absorbing material;

3. cylindrical cartridge with breathable walls;

4. cover;

5. bottom;

6. heating element of the cartridge;

7. outlet;

8. temperature sensor first;

9. heating element of the air flow detection system;

10. temperature sensor second;

11. pipe included in the cartridge;

12. left plate;

13. right plate;

14. the controller;

15. inlet;

16. dielectric substrate.

The dehumidifier of the oil transformer air consists of a cylindrical outer wall 1, inside the cylindrical wall 1 there is a cylindrical cartridge with air-permeable walls 3 containing moisture absorbing material 2, inside the cartridge is the heating element of the cartridge 6, on top of the wall they are closed by a cover 4, below the bottom 5. On the cover 4 there is the outlet 7, in the outlet is the temperature sensor first 8, the heating element of the air flow sensor 9, the temperature sensor second 10, located on the diele The static substrate 16 and fixed on the outlet 7, the outlet 7 ends with a nozzle included in the cartridge 11, the left plate 12 and the right plate 13 hold the cover 4 and the bottom 5, the controller 14 is located on the cover 13, the bottom 5 has an inlet 15.

The device works as follows. The air flow measurement system measures the direction of air movement, the controller 14 supplies current continuously or temporarily to the heating element of the air flow detection system 9, reads the value of the temperature sensor of the first 8 and second 10, compares them and that value, which is above indicated the direction of air flow. The controller 14 sends an electrical signal to the heating element 9 to start regeneration at the moment when the air flow comes from the expansion tank of the transformer and the air in the regeneration mode does not get into the expansion tank. When you turn on the regeneration mode, it is important to monitor the condition of the equipment. It may be at rest, heated or cooled. The regeneration mode can be switched on only in heating mode, since at this moment the air from the expansion tank of the transformer is pushed out and the ingress of moist air into the equipment is difficult.

Claims (2)

1. The air dryer of the oil transformer, containing a drainage container having at least one inlet for dried air and at least one outlet for dried air; absorbent agents contained in the specified drying container and suitable for drying the air entering from the outside; heating means placed inside said drying container suitable for regenerating said absorbing means, detector means operatively connected to the heating means and suitable for determining the saturation state of said absorbent means in which said detector means contain at least one sensor, characterized in that that it contains a system for determining the direction of air flow, consisting of the first temperature sensor, the second temperature sensor, heating The element located between them on a dielectric substrate, mounted on the outlet aperture along the axis of the direction of air movement, and a controller connected to a heating element to which current is constantly or temporarily supplied, while the controller compares the two temperature sensors, and the device additionally contains two plates left and right, made U-shaped and located on the sides in such a way that hold the lid and bottom. 2. Air dryer oil transformer according to claim 1, characterized in that the nozzle included in the cartridge for air intake, has a bend.

Images