A transformer oil and gas source filtration system

Abstract

This utility model relates to the field of gas filtration technology, specifically to a transformer oil gas source filtration system, including an air pump, a first pipe, and a gas storage tank. One end of the first pipe is connected to the air pump, and the other end of the first pipe is connected to the gas storage tank. A second pipe, a purification unit, and a delivery pipe are also included. One end of the second pipe is connected to the purification unit, and the other end of the second pipe is connected to the gas storage tank. The delivery pipe is connected to the purification unit. The purification unit includes several purification pipes, with adjacent purification pipes connected end-to-end. Each purification pipe includes a first pipe body, a second pipe body, and a filter unit. The first pipe body and the second pipe body are detachably connected. The filter unit is disposed within the first pipe body and the second pipe body to treat the air entering the online monitoring device, preventing fine particulate matter in the untreated air from affecting the accuracy of the analysis results.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration technology, specifically to a transformer oil gas source filtration system. Background Technology

[0002] Online dissolved gas monitoring devices for transformer oil are crucial for ensuring the safe and stable operation of power transformers and have been widely adopted, effectively complementing offline chromatographic analysis. However, online monitoring devices typically require high-purity consumable carrier gases to ensure the accuracy of chromatographic analysis. Currently, high-pressure carrier gas cylinders are commonly used for supplying the gas, but these are costly. For an online monitoring device analyzing once a day, multiple cylinders of carrier gas need to be replaced annually on average. Frequent monitoring further increases the consumption of carrier gas, leading to higher costs. To reduce these costs, some manufacturers have experimented with using local air as an alternative carrier gas to reduce maintenance requirements. However, the chromatograph in an online monitoring device is a precision instrument, and using untreated air containing fine particulate matter can affect the accuracy of analytical results and the instrument's lifespan.

[0003] Therefore, in view of this, the inventors propose a transformer oil and gas source filtration system to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a transformer oil and gas source filtration system to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A transformer oil and gas source filtration system includes an air pump, a first pipeline and an air storage tank, one end of the first pipeline is connected to the air pump and the other end of the first pipeline is connected to the air storage tank;

[0007] The system comprises a second pipeline, a purification unit, and a delivery pipe. One end of the second pipeline is connected to the purification unit, and the other end of the second pipeline is connected to the gas storage tank. The delivery pipe is connected to the purification unit.

[0008] The purification unit includes several purification tubes, with adjacent purification tubes connected end to end.

[0009] The purification tube includes a first tube body, a second tube body, and a filter unit. The first tube body and the second tube body are detachably connected, and the filter unit is disposed in the first tube body and the second tube body.

[0010] Furthermore, the interiors of the first tube and the second tube together enclose an installation cavity, and the filter unit is disposed within the installation cavity.

[0011] Furthermore, the filter unit includes a cylindrical body and a cylindrical column. The cylindrical body has a first end plate and a second end plate at both ends. The cylindrical column is coaxially arranged with the cylindrical body and is disposed inside the cylindrical body.

[0012] Furthermore, a filtration zone is formed between the outer wall of the cylinder and the inner wall of the cylinder;

[0013] The cylindrical column has a hollow flow channel, and a partition ring is provided in the flow channel to divide the flow channel into a first channel and a second channel.

[0014] Furthermore, the filtration unit includes a first partition plate and a second partition plate disposed inside the cylinder. The first partition plate and the second partition plate are sleeved on the cylinder. The first partition plate and the second partition plate divide the filtration area into a first filtration cavity, a second filtration cavity and a third filtration cavity. The first filtration cavity is filled with a fiber filter element, the second filtration cavity is filled with activated carbon, and the third filtration cavity is filled with glass fiber filter paper.

[0015] The first filter cavity is connected to the second filter cavity and the first channel, the second filter cavity is connected to the second channel, the second channel is connected to the third filter cavity, and a plurality of air outlets are provided on the second end plate.

[0016] Furthermore, along the axial direction of the cylinder, two mounting seats are provided in the second channel, one of which is mounted on the partition ring and the other is mounted on the second end plate, with an ultraviolet germicidal lamp tube provided between the two mounting seats.

[0017] Furthermore, a first connector is provided on one side of the first tube body, and a second connector is provided on one side of the second tube body, with the first connector and the second connector being compatible.

[0018] Furthermore, the first connector includes a first connector ring, which is fixedly disposed at one end of the first tube body. The first connector ring has a hollow structure and communicates with the first channel.

[0019] The outer periphery of the first connector ring has a locking ring groove.

[0020] Furthermore, the second connector includes a second connector ring fixedly disposed on one side of the second tube body. A toggle ring is slidably sleeved on the outer periphery of the second connector ring. A plurality of mounting holes are formed along the radial direction of the second connector ring, and ball bearings are disposed in the mounting holes. A retaining ring is fixedly disposed on the second connector ring. A spring is disposed between the retaining ring and the toggle ring. The spring has a tendency to drive the toggle ring to move to the right. When the toggle ring moves to the right, it squeezes the ball bearings to move radially along the second connector ring, so that each ball bearing is engaged in the retaining ring groove to limit the first connector ring.

[0021] Furthermore, one end of the conveying pipe is connected to a first connector, and both the second pipe and the first pipe are equipped with shut-off valves.

[0022] The beneficial effects of this utility model are:

[0023] This invention replaces high-pressure carrier gas cylinders with on-site air supply and combines it with a purification unit for deep air treatment. While ensuring the cleanliness of the carrier gas, it significantly reduces operating costs. Traditional high-pressure carrier gas cylinders require frequent replacement, resulting in high annual carrier gas costs per unit. In contrast, this system directly draws ambient air through an air pump, stores it in a storage tank, and then enters the purification unit. The system uses a fiber filter to pre-filter large particles, activated carbon to adsorb moisture and organic matter, and glass fiber filter paper to precisely filter micron-sized impurities. Finally, it outputs high-cleanliness carrier gas that meets the requirements of the chromatograph, avoiding the costs of purchasing, transporting, and replacing high-pressure carrier gas cylinders. It is especially suitable for high-frequency analysis scenarios and significantly reduces the maintenance costs throughout the equipment's life cycle.

[0024] This invention effectively solves the negative impact of untreated air on the chromatograph through an integrated design of three-stage filtration and dynamic ultraviolet sterilization. When gas flows through the purification unit, it sequentially passes through a primary fiber filter (intercepting dust), an activated carbon adsorption layer (removing moisture and oil mist), and an ultraviolet sterilization channel (killing microorganisms), finally being output after precision filtration through ultra-fine glass fiber filter paper. The ultraviolet sterilization lamp is located in the second channel between the activated carbon layer and the precision filter layer. At this point, most impurities have been removed from the gas, resulting in higher ultraviolet penetration and preventing analytical bias caused by microbial growth within the chromatograph. This not only ensures the accuracy of online monitoring data but also extends the service life of the chromatograph's core components, achieving the dual goals of improved reliability and reduced maintenance costs.

[0025] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the transformer oil and gas source filtration system of this utility model;

[0027] Figure 2 This is a connection diagram of the transformer oil and gas source filtration system of this utility model;

[0028] Figure 3 This is a cross-sectional schematic diagram of the purification pipe of the transformer oil and gas source filtration system of this utility model;

[0029] Figure 4 For the transformer oil and gas source filtration system of this utility model Figure 3 A schematic diagram of a partial structure;

[0030] Figure 5 This is a schematic diagram of the connection structure between the delivery pipe and the first connector of the transformer oil and gas source filtration system of this utility model;

[0031] Figure 6 This is a partial cross-sectional view of the first and second connectors of the delivery pipe in the transformer oil and gas source filtration system of this utility model.

[0032] The components include: air pump 1, first pipe 2, air tank 3, second pipe 4, delivery pipe 5, purification pipe 6, first pipe body 61, second pipe body 62, filter unit 63, cylinder 631, cylinder column 632, first end plate 633, second end plate 634, air outlet 6341, separator ring 635, first channel 636, second channel 637, first separator plate 64, second separator plate 65, fiber filter element 66, activated carbon 67, glass fiber filter paper 68, mounting base 69, ultraviolet germicidal lamp tube 7, first connector 8, first connector ring 81, locking ring groove 82, second connector 9, second connector ring 91, actuating ring 92, ball bearing 93, retaining ring 94, spring 95, and shut-off valve 10. Detailed Implementation

[0033] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] This embodiment proposes a transformer oil and gas source filtration system, such as... Figures 1 to 6 As shown, the system includes an air pump 1, a first pipe 2, and a gas storage tank 3. The left end of the first pipe 2 is connected to the air pump 1, and the purpose of the air pump 1 is to act as a power source to allow outside air to enter the first pipe 2. The right end of the first pipe 2 is connected to the gas storage tank 3. The system also includes a second pipe 4, a purification unit, and a delivery pipe 5. The right end of the second pipe 4 is connected to the purification unit, the left end of the second pipe 4 is connected to the gas storage tank 3, the left end of the delivery pipe 5 is connected to the purification unit, and the right end of the delivery pipe 5 is connected to the carrier gas port of the chromatograph in the online monitoring device.

[0036] like Figure 2 As shown, the purification unit includes several purification tubes 6, and adjacent purification tubes 6 are connected end to end. In this embodiment, the number of purification tubes 6 is preferably three. Of course, it can be understood that the number of purification tubes 6 is not limited to three in this embodiment, but can also be four, five or more. This application does not impose any restrictions.

[0037] like Figure 3 As shown, the purification tube 6 includes a first tube body 61, a second tube body 62, and a filter unit 63. The first tube body 61 and the second tube body 62 are detachably connected, specifically, the first tube body 61 and the second tube body 62 are connected by a threaded connection. The interiors of the first tube body 61 and the second tube body 62 together form an installation cavity, and the filter unit 63 is disposed in the installation cavity.

[0038] In this embodiment, the air pump 1 draws air from the external environment and delivers it to the gas storage tank 3 for temporary storage via the first pipe 2. The gas in the gas storage tank 3 enters the purification unit composed of several purification pipes 6 connected in series through the second pipe 4. After the gas enters the first purification pipe 6, it flows sequentially through the filter unit 63 in the installation cavity formed by the first pipe body 61 and the second pipe body 62. Finally, the clean gas is output to the carrier gas port of the chromatograph in the online monitoring device through the delivery pipe 5.

[0039] As a preferred embodiment, such as Figure 4As shown, the filter unit 63 includes a cylindrical body 631 and a cylindrical column 632. The two ends of the cylindrical body 631 are provided with a first end plate 633 and a second end plate 634. The cylindrical column 632 is coaxially arranged with the cylindrical body 631 and is located inside the cylindrical body 631. A filtration zone is formed between the outer wall of the cylindrical column 632 and the inner wall of the cylindrical body 631. A hollow flow channel is formed inside the cylindrical column 632. A partition ring 635 is provided inside the flow channel, which divides the flow channel into a first channel 636 and a second channel 637.

[0040] The filter unit 63 also includes a first partition plate 64 and a second partition plate 65 disposed inside the cylinder 631. The first partition plate 64 and the second partition plate 65 are sleeved on the cylinder 632. The first partition plate 64 and the second partition plate 65 divide the filter area into a first filter cavity, a second filter cavity and a third filter cavity. The first filter cavity is filled with a fiber filter element 66, the second filter cavity is filled with activated carbon 67, and the third filter cavity is filled with glass fiber filter paper 68. The first filter cavity is connected to the second filter cavity and the first channel 636, the second filter cavity is connected to the second channel 637, and the second channel 637 is connected to the third filter cavity. A plurality of air outlets 6341 are provided on the second end plate 634.

[0041] like Figure 4 As shown, two mounting seats 69 are provided in the second channel 637. The mounting seat 69 on the left is mounted on the partition ring 635, and the other mounting seat 69 is mounted on the second end plate 634. An ultraviolet germicidal lamp tube 7 is provided between the two mounting seats 69.

[0042] In this embodiment, external gas first enters from one end of the cylinder 631, then enters the first channel 636, and then from the first channel 636 into the first filter cavity filled with fiber filter element 66, completing the initial interception of large particles (such as dust); subsequently, it flows into the second filter cavity, where activated carbon 67 can adsorb moisture, oil mist, and volatile organic compounds in the air. After being adsorbed and filtered by the activated carbon 67 in the second filter cavity, the airflow enters the second channel 637; the second channel 637 is equipped with an ultraviolet sterilizer. The UV lamp 7 irradiates the gas to kill microorganisms; then the airflow enters the third filtration cavity through the second channel 637. The glass fiber filter paper 68 filled in the third filtration cavity is used to further intercept micron-sized particles, ensuring that the gas finally discharged from the outlet 6341 of the second end plate 634 meets the cleanliness requirements of the chromatograph. Through the coaxial design of the cylinder 632 and the cylinder 631, the division of the filtration area by the first partition plate 64 and the second partition plate 65, and the targeted filtration function of each filling material, the system achieves multi-dimensional purification synergy.

[0043] It should be noted that the ultraviolet germicidal lamp tube 7, the fiber filter element 66, the activated carbon 67, and the glass fiber filter paper 68 are all existing components well known to those skilled in the art, and the specific components that achieve sterilization, filtration, and adsorption are all well known to the public.

[0044] As a preferred embodiment, such as Figure 3 As shown, a first connector 8 is provided on the left side of the first tube body 61, and a second connector 9 is provided on the right side of the second tube body 62. The first connector 8 and the second connector 9 are adapted to each other. The first connector 8 includes a first connector ring 81, which is fixedly disposed at one end of the first tube body 61. The first connector ring 81 has a hollow structure and communicates with the first channel 636. A locking ring groove 82 is formed on the outer periphery of the first connector ring 81.

[0045] The second connector 9 includes a second connector ring 91 fixedly disposed on one side of the second tube body 62. A toggle ring 92 is slidably sleeved on the outer periphery of the second connector ring 91. Several mounting holes are opened along the radial direction of the second connector ring 91, and ball bearings 93 are disposed in the mounting holes. A retaining ring 94 is fixedly disposed on the second connector ring 91. A spring 95 is disposed between the retaining ring 94 and the toggle ring 92. The spring 95 has a tendency to drive the toggle ring 92 to move to the right. When the toggle ring 92 moves to the right (or is not subjected to external force), it squeezes the ball bearings 93 to move radially along the second connector ring 91. When the first connector ring 81 is engaged in the second connector ring 91, the toggle ring 92 can cause each ball bearing 93 to be engaged in the engaging ring groove 82 to limit the first connector ring 81.

[0046] In this embodiment, when the first tube 61 is connected to the second tube 62 of the adjacent purification tube 6, the first connector ring 81 is inserted into the inner cavity of the second connector ring 91. At this time, the actuating ring 92 of the second connector 9 slides to the right under the action of the spring 95, squeezing the ball 93 in the mounting hole to move radially inward. The ball 93 is engaged in the locking ring groove 82 on the outer periphery of the first connector ring 81, forming an axial limit to ensure that the first tube 61 and the second tube 62 are tightly connected. When disassembly is required, the actuating ring 92 is pushed to the left to overcome the elastic force of the spring 95. After the ball 93 loses its compression, it is disengaged radially outward from the locking ring groove 82, thus completing the quick separation. The reliable connection is achieved through the mechanical engagement of the ball 93 and the locking ring groove 82. At the same time, the preload of the spring 95 is used to maintain the engagement stability, which is convenient to operate and facilitates the quick maintenance and replacement of the purification tube 6.

[0047] As a preferred embodiment, such as Figure 5 and Figure 6 As shown, the left end of the conveying pipe 5 is connected to a first connector 8, which is used to facilitate connection with the purification pipe 6. A pressure gauge is installed on the conveying pipe 5, and a shut-off valve 10 is installed on both the second pipe 4 and the first pipe 2.

[0048] This application utilizes on-site air supply instead of high-pressure carrier gas cylinders, combined with a purification unit for deep air treatment. This significantly reduces operating costs while ensuring the cleanliness of the carrier gas. Traditional high-pressure carrier gas cylinders require frequent replacements, resulting in high annual carrier gas costs per unit. In contrast, this system directly draws ambient air through an air pump 1, which is then temporarily stored in a storage tank 3 before entering the purification unit. The system uses a fiber filter element 66 for primary filtering of large particles, activated carbon 67 for adsorption of moisture and organic matter, and glass fiber filter paper 68 for precise filtration of micron-sized impurities. The final output is high-cleanliness carrier gas that meets the requirements of the chromatograph, avoiding the costs of purchasing, transporting, and replacing high-pressure carrier gas cylinders. This is particularly suitable for high-frequency analysis scenarios and significantly reduces the maintenance costs throughout the equipment's lifecycle. Meanwhile, through the integrated design of three-stage filtration and ultraviolet dynamic sterilization, the negative impact of untreated air on the chromatograph is effectively solved. When the gas flows through the purification unit, it passes through the primary fiber filter 66, the activated carbon adsorption layer 67, and the ultraviolet sterilization channel in sequence, and is finally filtered through the glass fiber filter paper 68 before being output. This not only ensures the accuracy of online monitoring data, but also extends the service life of the core components of the chromatograph. It has a compact structure and strong practicality.

[0049] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A transformer oil-gas source filtration system, characterized in that, include: An air pump (1), a first pipe (2) and an air tank (3), one end of the first pipe (2) is connected to the air pump (1) and the other end of the first pipe (2) is connected to the air tank (3); The second pipe (4), the purification unit and the delivery pipe (5) are connected. One end of the second pipe (4) is connected to the purification unit and the other end of the second pipe (4) is connected to the gas storage tank (3). The delivery pipe (5) is connected to the purification unit. The purification unit includes a plurality of purification tubes (6), and two adjacent purification tubes (6) are connected end to end; The purification tube (6) includes a first tube body (61), a second tube body (62) and a filter unit (63). The first tube body (61) and the second tube body (62) are detachably connected, and the filter unit (63) is disposed inside the first tube body (61) and the second tube body (62).

2. The transformer oil and gas source filtration system according to claim 1, characterized in that: The first tube (61) and the second tube (62) together enclose an installation cavity, and the filter unit (63) is disposed in the installation cavity.

3. The transformer oil and gas source filtration system according to claim 2, characterized in that: The filter unit (63) includes a cylinder (631) and a cylindrical column (632). The cylinder (631) has a first end plate (633) and a second end plate (634) at both ends. The cylindrical column (632) is coaxially arranged with the cylinder (631) and is located inside the cylinder (631).

4. The transformer oil and gas source filtration system according to claim 3, characterized in that: A filtration zone is formed between the outer wall of the cylindrical column (632) and the inner wall of the cylindrical body (631); The cylindrical column (632) has a hollow flow channel, and a partition ring (635) is provided in the flow channel, which divides the flow channel into a first channel (636) and a second channel (637).

5. The transformer oil and gas source filtration system according to claim 4, characterized in that: The filter unit (63) includes a first partition plate (64) and a second partition plate (65) disposed inside the cylinder (631). The first partition plate (64) and the second partition plate (65) are sleeved on the cylinder (632). The first partition plate (64) and the second partition plate (65) divide the filter area into a first filter cavity, a second filter cavity and a third filter cavity. The first filter cavity is filled with a fiber filter element (66), the second filter cavity is filled with activated carbon (67), and the third filter cavity is filled with glass fiber filter paper (68). The first filter cavity is connected to the second filter cavity and the first channel (636) respectively. The second filter cavity is connected to the second channel (637). The second channel (637) is connected to the third filter cavity. The second end plate (634) is provided with a plurality of air outlets (6341).

6. The transformer oil and gas source filtration system according to claim 5, characterized in that: Along the axial direction of the cylinder (631), two mounting seats (69) are provided in the second channel (637), one of the mounting seats (69) is mounted on the partition ring (635), and the other mounting seat (69) is mounted on the second end plate (634). An ultraviolet germicidal lamp tube (7) is provided between the two mounting seats (69).

7. The transformer oil and gas source filtration system according to claim 6, characterized in that: A first connector (8) is provided on one side of the first tube (61), and a second connector (9) is provided on one side of the second tube (62). The first connector (8) and the second connector (9) are compatible.

8. The transformer oil and gas source filtration system according to claim 7, characterized in that: The first connector (8) includes a first connector ring (81), which is fixedly disposed at one end of the first tube body (61). The first connector ring (81) has a hollow structure and is connected to the first channel (636). The outer periphery of the first connector ring (81) is formed with a locking ring groove (82).

9. The transformer oil and gas source filtration system according to claim 8, characterized in that: The second connector (9) includes a second connector ring (91) fixedly disposed on one side of the second tube body (62). A toggle ring (92) is slidably sleeved on the outer periphery of the second connector ring (91). A plurality of mounting holes are provided along the radial direction of the second connector ring (91). A ball bearing (93) is disposed in the mounting hole. A retaining ring (94) is fixedly disposed on the second connector ring (91). A spring (95) is disposed between the retaining ring (94) and the toggle ring (92). The spring (95) has a tendency to drive the toggle ring (92) to move to the right. When the toggle ring (92) moves to the right, it squeezes the ball bearing (93) to move radially along the second connector ring (91), so that each ball bearing (93) is engaged in the retaining ring groove (82) to limit the first connector ring (81).

10. The transformer oil and gas source filtration system according to any one of claims 1 to 9, characterized in that: Both the second pipe (4) and the first pipe (2) are equipped with shut-off valves (10).

Images