Gas drying equipment for gas-in-oil monitoring equipment

Abstract

The utility model relates to the technical field of gas-in-oil monitoring equipment, and discloses gas drying equipment for gas-in-oil monitoring equipment, which comprises a gas pump, an exhaust pipe is arranged in the middle of the upper end of the gas pump, a connecting seat is arranged at the upper end of the exhaust pipe, and a connecting cylinder is arranged on the periphery of the upper end of the connecting seat. A first connecting pipe is arranged in the middle of the upper end of the connecting cylinder, a first filter screen is arranged at the upper end of the connecting seat located in the connecting cylinder, a second filter screen is arranged at the upper end of the first filter screen, and a conveying pipe is arranged on one side wall of the air pump. By arranging a gas-liquid separator, a filter cartridge, a second connecting pipe, a drying agent and a barrier filter screen, under the assistance of a gas pump, the equipment can perform double drying treatment on gas through the gas-liquid separator and the drying agent, so that the dryness of the gas is ensured; the blocking filter screen prevents the drying agent from leaking from the lower end of the filter cartridge in the inner shell of the filter cartridge, does not influence air to flow through the drying agent and the lower end of the filter cartridge, and is very practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-in-oil monitoring equipment, in particular to gas drying equipment used for gas-in-oil monitoring equipment. Background Art

[0002] The oil chromatography characteristic gas analysis method can be used to determine the cause of transformer failure. The gas dissolved in the oil can reflect the electrical and thermal decomposition nature of the surrounding oil and paper insulation caused by the fault point. The gas characteristics vary with the fault type, fault energy and the insulation materials involved. That is, there is a close relationship between the unsaturation of hydrocarbon gas produced at the fault point and the energy density of the fault source. The oil chromatography characteristic gas analysis method can be used to analyze and determine the general type of fault in a relatively intuitive and convenient manner. The oil gas monitoring equipment needs to be assisted by dry carrier gas when in use.

[0003] The carrier gas drying of the existing oil-gas monitoring equipment is generally processed directly by a desiccant, which has a heavy processing burden on the desiccant and a large loss of the desiccant, and the processing effect is limited. For this reason, a gas drying device for oil-gas monitoring equipment is proposed here. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a gas drying device for oil-gas monitoring equipment, which effectively solves the problems existing in the existing gas drying device for oil-gas monitoring equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a gas drying device for oil-gas monitoring equipment comprises an air pump, an air extraction pipe is arranged in the middle of the upper end of the air pump, a connecting seat is arranged at the upper end of the air extraction pipe, a connecting cylinder is arranged on the periphery of the upper end of the connecting seat, a first connecting pipe is arranged in the middle of the upper end of the connecting cylinder, a first filter is arranged at the upper end of the connecting seat located in the connecting cylinder, a second filter is arranged at the upper end of the first filter, a delivery pipe is arranged on one side wall of the air pump, a gas-liquid separator is arranged at the end of the delivery pipe away from the air pump, a drain pipe is arranged in the middle of the lower end of the gas-liquid separator, a second connecting pipe is arranged on the side wall of the gas-liquid separator facing the delivery pipe, a cylinder cover is arranged at the end of the second connecting pipe away from the gas-liquid separator, a filter cylinder is arranged at the lower end of the cylinder cover, a barrier filter is arranged at the bottom end of the filter cylinder, and a desiccant is arranged at the upper end of the barrier filter.

[0006] Preferably, the lower end of the exhaust pipe is connected to the air inlet end of the air pump via a flange, the upper end of the exhaust pipe is connected to the middle part of the lower end of the connecting seat via a flange, and the outer periphery of the upper end of the connecting seat is connected to the inner wall of the connecting tube via a threaded connection. When the air pump is working, gas can be extracted through the exhaust pipe, and the connecting seat and the connecting tube can be easily disassembled and assembled.

[0007] Preferably, the lower end of the first connecting tube is connected to the middle part of the upper end of the connecting tube by a flange, the first filter screen and the second filter screen are clamped between the upper end of the connecting seat and the top end inside the connecting tube, the aperture of the first filter screen is smaller than the aperture of the second filter screen, the first connecting tube can be directly exposed to the air so that the air pump can draw outside air, and can also be connected to a gas storage container such as a gas tank so that the air pump can draw stored gas, the second filter screen and the first filter screen can perform double filtration on the air drawn by the air pump to ensure the cleanliness of the gas.

[0008] Preferably, the delivery pipe is connected to the output end of the air pump via a flange, and the end of the delivery pipe away from the air pump is connected to the air inlet end of the gas-liquid separator via a flange. The drain pipe is formed at the lower end of the gas-liquid separator. The gas extracted by the air pump can be sent to the gas-liquid separator through the delivery pipe. The gas-liquid separator adopts high-temperature nanofiltration to efficiently filter and remove droplets entrained in the steam and compressed air system. The gas enters the gas-liquid separator and moves downward in a neutral cyclone centrifugal tilt and change direction. Since the densities of gas and liquid are different, when the two pass through the filter together, the liquid will be filtered onto the filter and discharged downward through the drain pipe.

[0009] Preferably, the second connecting pipe is connected to the output end of the gas-liquid separator via a flange, and the end of the second connecting pipe away from the gas-liquid separator is connected to the middle of the upper end of the cylinder cover via a flange, and the gas separated by the gas-liquid separator is discharged through the second connecting pipe.

[0010] Preferably, the cartridge cover is connected to the upper end of the filter cartridge by bolts, the barrier filter is overlapped with the inner wall and the inner bottom end of the filter cartridge, and the barrier filter can be conveniently removed from the filter cartridge.

[0011] Preferably, the desiccant is contained in the filter cartridge at the upper end of the barrier filter, and the air entering the filter cartridge passes through the desiccant, and the air is absorbed by the desiccant to be further dried.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the gas drying device for oil gas monitoring equipment, by arranging a gas-liquid separator, a second connecting pipe of the filter cartridge, a desiccant and a barrier filter, with the assistance of an air pump, the device can perform double drying treatment on the gas through the gas-liquid separator and the desiccant to ensure the dryness of the gas; the barrier filter is in the inner shell of the filter cartridge to prevent the desiccant from leaking out of the lower end of the filter cartridge, and will not affect the flow of gas from the desiccant and the lower end of the filter cartridge, which is very practical; the connecting seat, the connecting cartridge, the first filter and the second filter that are easy to disassemble and assemble can ensure the cleanliness of the gas entering the device, and are also very convenient for cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the connecting seat and the connecting tube in the utility model;

[0017] Figure 3 It is a front cross-sectional view of the filter cartridge in the utility model;

[0018] In the figure: 1. air pump; 2. exhaust pipe; 3. connecting seat; 4. connecting cylinder; 5. first connecting pipe; 6. first filter screen; 7. second filter screen; 8. delivery pipe; 9. gas-liquid separator; 10. drain pipe; 11. second connecting pipe; 12. cylinder cover; 13. filter cylinder; 14. barrier filter screen; 15. desiccant. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In this embodiment, Figure 1-3The utility model includes an air pump 1, a suction pipe 2 is provided in the middle of the upper end of the air pump 1, a connecting seat 3 is provided at the upper end of the suction pipe 2, a connecting cylinder 4 is provided on the periphery of the upper end of the connecting seat 3, a first connecting pipe 5 is provided in the middle of the upper end of the connecting cylinder 4, a first filter screen 6 is provided at the upper end of the connecting seat 3 located in the connecting cylinder 4, a second filter screen 7 is provided at the upper end of the first filter screen 6, a delivery pipe 8 is provided on one side wall of the air pump 1, a gas-liquid separator 9 is provided at the end of the delivery pipe 8 away from the air pump 1, a drain pipe 10 is provided in the middle of the lower end of the gas-liquid separator 9, a second connecting pipe 11 is provided on the side wall of the gas-liquid separator 9 facing the delivery pipe 8, a cylinder cover 12 is provided at the end of the second connecting pipe 11 away from the gas-liquid separator 9, a filter cylinder 13 is provided at the lower end of the cylinder cover 12, a barrier filter screen 14 is provided at the bottom end of the filter cylinder 13, and a desiccant 15 is provided at the upper end of the barrier filter screen 14.

[0021] Among them, the lower end of the exhaust pipe 2 is connected to the air inlet end of the air pump 1 through a flange, the upper end of the exhaust pipe 2 is connected to the middle part of the lower end of the connecting seat 3 through a flange, and the outer periphery of the upper end of the connecting seat 3 is connected to the inner wall of the connecting tube 4 through a threaded connection. When the air pump 1 is working, gas can be extracted through the exhaust pipe 2, and the connecting seat 3 and the connecting tube 4 can be easily disassembled and assembled.

[0022] Among them, the lower end of the first connecting pipe 5 is connected to the middle part of the upper end of the connecting tube 4 through a flange, the first filter 6 and the second filter 7 are clamped between the upper end of the connecting seat 3 and the top end inside the connecting tube 4, the aperture of the first filter 6 is smaller than the aperture of the second filter 7, the first connecting pipe 5 can be directly exposed to the air, so that the air pump 1 draws external air, and can also be connected to a gas storage container such as a gas tank, so that the air pump 1 draws stored gas, the second filter 7 and the first filter 6 can perform double filtration on the air drawn by the air pump 1 to ensure the cleanliness of the gas.

[0023] Among them, the delivery pipe 8 is connected to the output end of the air pump 1 through a flange, and the end of the delivery pipe 8 away from the air pump 1 is connected to the air inlet end of the gas-liquid separator 9 through a flange. The drain pipe 10 is formed at the lower end of the gas-liquid separator 9. The gas extracted by the air pump 1 can be sent to the gas-liquid separator 9 through the delivery pipe 8. The gas-liquid separator 9 adopts high-temperature nanofiltration to efficiently filter and remove droplets entrained in the steam and compressed air system. The gas enters the gas-liquid separator 9 and moves downward in a neutral cyclone centrifugal tilt and change direction. Since the density of gas and liquid is different, when the two pass through the filter together, the liquid will be filtered onto the filter and discharged downward through the drain pipe 10.

[0024] Among them, the second connecting pipe 11 is connected to the output end of the gas-liquid separator 9 through a flange, and the end of the second connecting pipe 11 away from the gas-liquid separator 9 is connected to the middle of the upper end of the cylinder cover 12 through a flange. The gas separated by the gas-liquid separator 9 is discharged into the filter cylinder 13 through the second connecting pipe 11, and the cylinder cover 12 is connected to the upper end of the filter cylinder 13 by bolts. The barrier filter 14 is overlapped with the inner wall and the inner bottom end of the filter cylinder 13. The barrier filter 14 can be easily removed from the filter cylinder 13. The desiccant 15 is contained in the filter cylinder 13 at the upper end of the barrier filter 14. The air entering the filter cylinder 13 will pass through the desiccant 15, and the moisture therein will be absorbed by the desiccant 15 for further drying.

[0025] Working principle: The gas drying equipment uses an external power supply and is controlled by an external control device to work. When the air pump 1 is working, it can extract gas through the exhaust pipe 2. The first connecting pipe 5 can be directly exposed to the air, so that the air pump 1 extracts external air. It can also be connected to a gas storage container such as a gas storage tank, so that the air pump 1 extracts the stored gas. The second filter 7 and the first filter 6 can perform double filtration on the air extracted by the air pump 1 to ensure the cleanliness of the gas. The gas extracted by the air pump 1 can be sent to the gas-liquid separator 9 through the delivery pipe 8. The gas-liquid separator 9 adopts high-temperature nano-filters. Filtration and filtration can efficiently filter and remove droplets entrained in steam and compressed air systems. The gas enters the gas-liquid separator 9 and moves downward in a neutral cyclone centrifugal motion. Since the density of gas and liquid is different, when the two pass through the filter together, the liquid will be filtered onto the filter and discharged downward through the drain pipe 10. The gas separated by the gas-liquid separator 9 is discharged into the filter cartridge 13 through the second connecting pipe 11, and is discharged from the lower end of the filter cartridge 13 after further drying by the desiccant 15 to be supplied to the oil gas detection equipment.

[0026] When the first filter screen 6 and the second filter screen 7 need to be cleaned, the connecting tube 4 and the connecting seat 3 can be disassembled, and then the first filter screen 6 and the second filter screen 7 can be removed for cleaning. The blocking filter screen 14 in the inner shell of the filter tube 13 prevents the desiccant 15 from leaking from the lower end of the filter tube 13, and will not affect the flow of gas from the desiccant 15 and the lower end of the filter tube 13.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas drying device for a gas-in-oil monitoring device, comprising an air pump (1), characterized in that: An air extraction pipe (2) is arranged at the middle of the upper end of the air pump (1), a connecting seat (3) is arranged at the upper end of the air extraction pipe (2), a connecting tube (4) is arranged at the periphery of the upper end of the connecting seat (3), a first connecting pipe (5) is arranged at the middle of the upper end of the connecting tube (4), a first filter screen (6) is arranged at the upper end of the connecting seat (3) located in the connecting tube (4), a second filter screen (7) is arranged at the upper end of the first filter screen (6), a delivery pipe (8) is arranged on one side wall of the air pump (1), and the delivery pipe (8) is away from the air pump (1). A gas-liquid separator (9) is provided at one end, a drain pipe (10) is provided at the middle of the lower end of the gas-liquid separator (9), a second connecting pipe (11) is provided on the side wall of the gas-liquid separator (9) facing the delivery pipe (8), a cylinder cover (12) is provided at the end of the second connecting pipe (11) away from the gas-liquid separator (9), a filter cylinder (13) is provided at the lower end of the cylinder cover (12), a barrier filter (14) is provided at the bottom end of the filter cylinder (13), and a desiccant (15) is provided at the upper end of the barrier filter (14).

2. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The lower end of the air extraction pipe (2) is connected to the air inlet end of the air pump (1) via a flange, the upper end of the air extraction pipe (2) is connected to the middle of the lower end of the connecting seat (3) via a flange, and the outer periphery of the upper end of the connecting seat (3) is connected to the inner wall of the connecting tube (4) via a thread.

3. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The lower end of the first connecting pipe (5) is connected to the middle of the upper end of the connecting tube (4) via a flange, the first filter screen (6) and the second filter screen (7) are clamped between the upper end of the connecting seat (3) and the top end of the connecting tube (4), and the aperture of the first filter screen (6) is smaller than the aperture of the second filter screen (7).

4. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The delivery pipe (8) is connected to the output end of the air pump (1) via a flange, the end of the delivery pipe (8) away from the air pump (1) is connected to the air inlet end of the gas-liquid separator (9) via a flange, and the drain pipe (10) is formed at the lower end of the gas-liquid separator (9).

5. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The second connecting pipe (11) is connected to the output end of the gas-liquid separator (9) via a flange, and the end of the second connecting pipe (11) away from the gas-liquid separator (9) is connected to the middle part of the upper end of the cylinder cover (12) via a flange.

6. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The cylinder cover (12) is connected to the upper end of the filter cylinder (13) by means of bolts, and the barrier filter (14) is overlapped with the inner wall and the inner bottom end of the filter cylinder (13).

7. The gas drying device for oil-gas monitoring equipment according to claim 1, characterized in that: The desiccant (15) is contained in the filter cartridge (13) at the upper end of the barrier filter (14).

Images