CN201918243U - Evaporation device for vacuum kerosene vapor-phase drying of transformer - Google Patents

Abstract

The utility model provides a transformer vacuum kerosene vapor phase drying and evaporating device, which comprises: at least two connected evaporators, the evaporators comprising: a closed shell, the interior of the closed shell is an evaporation chamber, and the There is a steam outlet on the closed shell, and the steam outlet is used to deliver kerosene vapor to the transformer; multiple brackets are vertically fixed in the evaporation chamber, and each bracket has multiple round holes; the heating pipe includes multiple Heating tubes, each of which is set horizontally in a round hole with the same height as the center of the circle, for heating with heat transfer oil; the spray pipe, located above the heating pipe, is set in a hole with the same height as the center of the circle In the circular hole and passing through the closed casing, the outer wall of the spray pipe has a plurality of small holes, and the small holes are used to spray kerosene onto the heating pipe. The device can realize the vacuum kerosene vapor phase drying treatment on the transformer site.

Description

A Transformer Vacuum Kerosene Vapor Phase Drying and Evaporating Device

technical field

The utility model relates to a transformer drying technology, in particular to a transformer vacuum kerosene vapor phase drying technology, in particular to a transformer vacuum kerosene vapor phase drying evaporation device.

Background technique

In the prior art, the transformer vacuum kerosene vapor phase drying technology is mainly to place the transformer in a vacuum drying chamber, and heat the transformer through the kerosene vapor generated by the evaporator inside the drying chamber to achieve the purpose of drying. Because the drying equipment is huge, it generally needs to be fixed and installed in the transformer factory. If you want to dry a large or giant transformer that is damp at the substation site, you need to transport it to the transformer factory for drying, and the transportation is very difficult. In order to solve the above problems, we redesigned the drying scheme and equipment, eliminating the need for a vacuum drying chamber, and replacing it with a temporary transformation of the transformer oil tank, making it possible to dry the transformer on site in vacuum vapor phase. However, the evaporator originally fixedly installed in a high-temperature vacuum drying room to generate high-temperature kerosene vapor cannot be installed in a transformer oil tank with a small space. If the evaporator is placed outside in a normal-temperature atmospheric environment, the heat utilization efficiency is very low.

Utility model content

The utility model provides a vacuum kerosene vapor phase drying and evaporating device for a transformer to realize the vacuum kerosene vapor phase drying treatment on the transformer site.

The utility model provides a transformer vacuum kerosene vapor phase drying and evaporating device, which comprises: at least two connected evaporators, the evaporators comprising: a closed shell, the interior of the closed shell is an evaporation chamber, and the There is a steam outlet on the closed shell, and the steam outlet is used to deliver kerosene vapor to the transformer; multiple brackets are vertically fixed in the evaporation chamber, and each bracket has multiple round holes; the heating pipe includes multiple Heating tubes, each of which is set horizontally in a round hole with the same height as the center of the circle, for heating with heat transfer oil; the spray pipe, located above the heating pipe, is set in a hole with the same height as the center of the circle In the circular hole and passing through the closed casing, the outer wall of the spray pipe has a plurality of small holes, and the small holes are used to spray kerosene onto the heating pipe. The device can realize the vacuum kerosene vapor phase drying treatment on the transformer site.

The beneficial technical effect of the utility model is that the device can realize the vacuum kerosene vapor phase drying treatment on the transformer site, and at the same time, the two evaporators of the device alternately carry out distillation purification and evaporation heating, which can maintain the continuity of the drying process.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort. In the attached picture:

Fig. 1 is the overall structure schematic diagram of the transformer vacuum kerosene vapor phase drying evaporation device of the utility model embodiment;

Fig. 2 is a schematic structural view of the components in the evaporation chamber of the embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of the closed casing of the embodiment of the present invention in the direction vertical to the heating pipe arrangement;

Fig. 4 is a schematic cross-sectional view of the closed casing of the embodiment of the present invention in the direction of the heating pipe arrangement;

Fig. 5 is a schematic structural view of the first container of the utility model embodiment;

Fig. 6 is a schematic structural view of a second container according to the embodiment of the present invention;

Fig. 7 and Fig. 8 are schematic diagrams showing the positions of heating pipes in other embodiments of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiment of the utility model clearer, the embodiment of the utility model will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiment of the utility model and its description are used to explain the utility model, but not as a limitation to the utility model.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the transformer vacuum kerosene vapor phase drying and evaporating device of this embodiment includes: at least two connected evaporators, and the evaporator includes: a closed casing 100, A plurality of brackets 12, heating pipes 11 and shower pipes 2.

The inside of the closed casing 100 is an evaporation chamber 13, and a steam outlet 1 is opened on the closed casing 100, and the steam outlet 1 is used to transport kerosene vapor to the transformer; a plurality of brackets 12 are vertically fixed in the evaporation chamber 13. Each bracket has a plurality of round holes; the heating pipe 11 includes a plurality of heating pipes, and each of the heating pipes is horizontally sleeved in a round hole with the same height as the center of the circle for heating with heat-conducting oil; The shower pipe 2 is located above the heating pipe, is set in the circular hole with the same height as the center of the circle, and passes through the closed casing 100. The outer wall of the shower pipe 2 has a plurality of small holes, so The small holes are used to spray kerosene onto the heating pipe 11.

As shown in Figure 1, the evaporator also includes: a thermal insulation armor layer 6, which is installed on the outer surface of the closed shell to prevent heat loss inside the closed shell 100, and the thermal insulation armor layer 6 The bottom of 6 is fixed with heat insulation base.

The heat transfer oil inlet 1 is also opened on the closed shell 100 , and the heat transfer oil inlet 1 is used to introduce the heat transfer oil into the evaporator to heat the heating pipe 11 .

As shown in Figure 5, the evaporator can also include a first container 400, which is respectively connected to the heating exhaust pipe 11 and the heat transfer oil inlet 3, and the heat transfer oil enters the first container 400 through the heat transfer oil inlet 3, and then passes into the heating row Tube 11.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the closed casing 100 is also provided with a heat transfer oil outlet 4 , and the heat transfer oil outlet 200 can discharge the heat transfer oil after passing through the heating pipe 11 from the evaporator.

As shown in FIG. 2 , the evaporator further includes a second container 200 , which is respectively connected to the heating pipe and the heat transfer oil outlet, and is used to discharge the heat transfer oil discharged from the heating pipe. The first container 400 (not shown in FIG. 2 ) and the second container 200 in FIG. 5 are respectively located at two ends of the heating calandria 11 . FIG. 6 is a schematic structural view of the second container 200 . As shown in FIG. 6 , the second container 200 can discharge the heat transfer oil passing through the heating pipe 11 to the outside of the evaporator through the pipe connected to the heat transfer oil outlet 4 .

As shown in FIG. 3 , the heating pipes of the heating row pipe 11 are arranged in a straight line in the vertical direction, and the heating pipes can also be arranged in a staggered manner in the vertical direction as shown in FIG. 7 . The heating pipes of the heating row pipe 11 can also be arranged as shown in FIG. 8 , and can be made of heating pipes with different diameters. When the kerosene sprayed from 2 small holes of the shower pipe 2 was sprayed on the heating row pipe 11, the kerosene would form a waterfall and be sprayed onto each heating pipe, so that the contact area between the kerosene and the heating pipe could be increased.

The closed casing 100 is also provided with an oil discharge port 5 for discharging the liquid oil in the evaporation chamber.

Further, as shown in FIG. 1 and FIG. 4 , the evaporator further includes: a liquid level gauge 8 , a thermometer 9 and a pressure gauge 10 .

The liquid level gauge 8 can be used to measure the liquid level of the liquid oil in the evaporation chamber; the thermometer 10 can be used to measure the temperature in the evaporation chamber; the pressure gauge 11 can be used to measure the pressure in the evaporation chamber.

The working process of the transformer vacuum kerosene vapor phase drying and evaporating device will be described in detail below.

The kerosene enters the spray pipe 2 and is sprayed onto the high-temperature heat transfer oil pipe 11. The kerosene flows through the outer wall of the heat transfer oil pipe 11 in a waterfall under the action of gravity, and is continuously heated and evaporated. When the thermometer 9 and the pressure gauge 10 show the After the measurement results meet the requirements, the valve of the steam outlet 1 can be opened, so that the kerosene vapor can be sent into the transformer oil tank through the steam outlet 1 through the pipeline. When the liquid level meter 8 indication of a certain evaporation chamber 13 rises to the required value, the liquid oil in the evaporation chamber 13 needs to be circulated and distilled. Reduce, the temperature of this evaporation chamber 13 reduces, only kerosene produces steam, and pure kerosene vapor is collected and recycled. When the result of sampling measurement at the oil discharge port 5 shows that the kerosene content meets the requirements, the remaining liquid oil in the evaporation chamber 13 is discharged from the oil discharge port 5; at the same time, the other evaporator is still evaporating and heating; the two evaporators alternately carry out distillation Purification and evaporative heating until the end of the drying process.

The beneficial effect of the utility model is that the device can realize the vacuum kerosene vapor phase drying treatment on the transformer site, which can solve the problems caused by the need to transport the transformer to the transformer factory for drying in the prior art; at the same time, the two evaporators of the device Alternate distillation purification and evaporative heating can maintain the continuity of the drying process.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (12)

1. the dry vaporising device of a transformer vacuum kerosene vapour phase is characterized in that described device comprises: at least two evaporators that are connected, and described evaporator comprises:

Closure casing, described enclosure are vaporization chamber, have a steam (vapor) outlet on the described closure casing, and described steam (vapor) outlet is used for carrying kerosene steam to transformer;

A plurality of supports, vertical fixing are in described vaporization chamber, and each described support has a plurality of circular holes;

Heating calancria comprises many heating tubes, and every described heating tube level is sheathed in the contour circular hole in the center of circle, is used to utilize conduction oil to heat;

Shower is positioned at the top of described heating calancria, is sheathed in the contour described circular hole in the center of circle, and passes described closure casing, and the outer wall of described shower has a plurality of apertures, and described aperture is used for kerosene is sprayed described heating calancria.

2. device as claimed in claim 1 is characterized in that, described evaporator also comprises:

Be incubated armour, be installed in the outer surface of described closure casing.

3. device as claimed in claim 1 is characterized in that, described closure casing also has the conduction oil inlet, is used for conduction oil is introduced described evaporator.

4. device as claimed in claim 3 is characterized in that, described evaporator also comprises: first container, be communicated with described heating calancria and described conduction oil inlet respectively, and be used for conduction oil is fed described heating calancria.

5. device as claimed in claim 1 is characterized in that, described closure casing also has the conduction oil outlet, is used for conduction oil is discharged from described evaporator.

6. device as claimed in claim 5 is characterized in that, described evaporator also comprises: second container, be communicated with the outlet of described heating calancria and described conduction oil respectively, and the conduction oil that is used for discharging from described heating calancria is discharged.

7. device as claimed in claim 1 is characterized in that, described many heating tubes vertically are crisscross arranged.

8. device as claimed in claim 1 is characterized in that described closure casing also has oil drain out, is used to discharge the fluid oil in the vaporization chamber.

9. device as claimed in claim 1 is characterized in that, described evaporator also comprises: liquid level gauge is used to measure the liquid level of fluid oil in the described vaporization chamber.

10. device as claimed in claim 1 is characterized in that, described evaporator also comprises: thermometer is used to measure the temperature in the described vaporization chamber.

11. device as claimed in claim 1 is characterized in that, described evaporator also comprises: Pressure gauge is used to measure the pressure in the described vaporization chamber.

12. device as claimed in claim 1 is characterized in that, described evaporator also comprises: heat insulation pedestal is fixed on described insulation armour bottom.

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