Vacuum oil filter inlet and outlet switching valve assembly

Abstract

The utility model discloses a kind of vacuum oil filter inlet and outlet switching valve assemblies, including valve assembly and pipeline assembly, valve assembly includes first valve, second valve, third valve and fourth valve, which are arranged in parallel on horizontal plane in turn, pipeline assembly is arranged on the same horizontal plane, pipeline assembly has first interface, second interface, third interface and fourth interface, first pipeline and first valve are equipped between first interface and second interface, second pipeline and fourth valve are equipped between third interface and fourth interface, third pipeline is equipped between first interface and fourth interface, fourth pipeline is equipped between third interface and second interface, third pipeline is equipped with second valve, fourth pipeline is equipped with third valve, one of third pipeline and fourth pipeline is jumper pipe, another can pass through from jumper pipe. Third pipeline and fourth pipeline can be crossed on the same horizontal plane, which is convenient to install, and the valve group structure is also relatively compact.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum oil filtration machines, and in particular to an inlet and outlet switching valve assembly for a vacuum oil filtration machine. Background Technology

[0002] Vacuum oil filters can be used to filter oil in transformers. Transformers involve two processes: oil filling and oil draining. During oil filling, oil needs to be fed from the oil tank to the vacuum oil filter for filtration and then output into the transformer. During oil draining, the transformer oil is filtered in the vacuum oil filter and then output into the oil tank. In these two processes, the inlet and outlet interfaces of the transformer, oil tank, and vacuum oil filter need to be swapped. To achieve this swapping, an inlet and outlet switching valve group is usually set up. In the existing technology, the switching valve group uses conventional ball valves, male threaded joints, elbows, tees, straight pipes, and other fittings. In order to avoid pipelines, welding installation is required on multiple planes, making the installation process relatively complicated. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an inlet / outlet switching valve assembly for a vacuum oil filtration machine, which solves the problem of a cumbersome installation process.

[0004] A vacuum oil filter inlet / outlet switching valve assembly according to a first aspect of the present invention includes: a valve assembly and a pipeline assembly. The valve assembly includes a first valve, a second valve, a third valve, and a fourth valve arranged side-by-side in sequence on a horizontal plane. The pipeline assembly is generally arranged on the same horizontal plane and connected to the valve assembly. The pipeline assembly has a first interface and a second interface arranged generally opposite to each other, and a third interface and a fourth interface arranged generally opposite to each other. A first pipe is provided between the first interface and the second interface, and the first pipe is provided with the first valve. A second pipe is provided between the third interface and the fourth interface, and the second pipe is provided with the fourth valve. A third pipe is provided between the first interface and the fourth interface, and a fourth pipe is provided between the third interface and the second interface, and the third pipe is provided with the second valve. The fourth pipe is provided with the third valve. One of the third pipe and the fourth pipe is provided as a crossover pipe, and the other can pass through the crossover pipe.

[0005] According to an embodiment of the present invention, a vacuum oil filter inlet and outlet switching valve assembly has at least the following beneficial effects: when the first valve and the fourth valve are open, and the second valve and the third valve are closed, the first interface is connected to the second interface, and the third interface is connected to the fourth interface. When the first valve and the fourth valve are closed, and the second valve and the third valve are open, the first interface can be connected to the fourth interface, and the third interface can be connected to the second interface, thereby realizing interface switching. By setting a crossover pipe, the intersecting third and fourth pipes can be cross-connected on the same horizontal plane, thereby enabling the valve assembly and the pipeline assembly to be installed on the same horizontal plane, which is convenient for installation, and the valve assembly structure is also relatively compact.

[0006] According to some embodiments of the present invention, the third pipeline is configured as the jumper pipe, which includes a branch pipe section and a jumper pipe section. The branch pipe section, the second valve, and the jumper pipe section are connected in sequence. The branch pipe section is connected to the first pipeline between the first interface and the first valve, and the jumper pipe section is connected to the second pipeline between the fourth interface and the fourth valve.

[0007] According to some embodiments of the present invention, a support is also included. One end of the cross-connection section extends to the outside of the first pipe and the other end extends to the outside of the fourth pipe. The support is disposed at both ends of the cross-connection section, and both the first pipe and the second pipe pass through the cross-connection section.

[0008] According to some embodiments of the present invention, the cross-connection section is configured as a square pipe structure, and the first pipe and the second pipe pass through the front sidewall and the rear sidewall of the cross-connection section.

[0009] According to some embodiments of the present invention, the cross-pipe section has a first cavity, the second valve is connected to the first cavity, and the side wall of the second pipe has an opening located inside the first cavity.

[0010] According to some embodiments of the present invention, the second pipe is provided with two openings extending through the vertical direction.

[0011] According to some embodiments of the present invention, the first valve, the second valve, the third valve and the fourth valve all have rotatable switch handles, and each switch handle is located in a rotation plane when rotated. The rotation planes are parallel and inclined relative to the horizontal plane.

[0012] According to some embodiments of the present invention, both the first pipe and the second pipe are straight pipes.

[0013] According to some embodiments of the present invention, the fourth pipeline includes a first elbow section, a first straight pipe section, a second elbow section, and a second straight pipe section. The first elbow section, the third valve, the first straight pipe section, the second elbow section, and the second straight pipe section are connected in sequence. The first elbow section is connected to the second pipeline, and the second straight pipe section is connected to the first pipeline. The first straight pipe section passes through the crossover pipe section.

[0014] According to some embodiments of the present invention, the second pipeline is provided with a flow switch, which is located between the fourth valve and the fourth interface and is disposed close to the fourth interface; the third pipeline is provided with a pressure sensor, which is located between the second interface and the third valve and is disposed close to the second interface.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 These are schematic diagrams of the structure of some embodiments of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram from another direction;

[0019] Figure 3 These are side views of some embodiments of the present invention;

[0020] Figure 4 for Figure 1 Exploded view of the structure;

[0021] Figure 5 for Figure 4 A schematic diagram from another direction;

[0022] Figure 6 This is a cross-sectional view of the cross-pipe section in some embodiments of this utility model.

[0023] Figure label:

[0024] First valve 110, second valve 120, third valve 130, fourth valve 140, switch handle 150;

[0025] First interface 210, second interface 220, third interface 230, fourth interface 240, first pipe 250, second pipe 260, opening 261, fourth pipe 270, first elbow section 271, first straight pipe section 272, second elbow section 273, second straight pipe section 274, jumper pipe 280, branch pipe section 281, jumper pipe section 282, first cavity 2821;

[0026] Bracket 300;

[0027] Flow switch 410, pressure sensor 420. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Reference Figures 1 to 6According to a first aspect of the present invention, a vacuum oil filter inlet / outlet switching valve assembly includes a valve assembly and a pipeline assembly. The valve assembly includes a first valve 110, a second valve 120, a third valve 130, and a fourth valve 140 arranged side-by-side on a horizontal plane. The pipeline assembly is generally arranged on the same horizontal plane and connected to the valve assembly. The pipeline assembly has a first interface 210 and a second interface 220 arranged generally opposite to each other, and a third interface 230 and a fourth interface 240 arranged generally opposite to each other. A first pipe 250 is provided between the three interfaces, and a first valve 110 is provided in the first pipe 250. A second pipe 260 is provided between the third interface 230 and the fourth interface 240, and a fourth valve 140 is provided in the second pipe 260. A third pipe is provided between the first interface 210 and the fourth interface 240. A fourth pipe 270 is provided between the third interface 230 and the second interface 220, and a second valve 120 is provided in the third pipe. A third valve 130 is provided in the fourth pipe 270. One of the third pipe and the fourth pipe 270 is provided as a cross-connector 280, and the other can pass through the cross-connector 280. When the first valve 110 and the fourth valve 140 are open, and the second valve 120 and the third valve 130 are closed, the first interface 210 is connected to the second interface 220, and the third interface 230 is connected to the fourth interface 240. When the first valve 110 and the fourth valve 140 are closed, and the second valve 120 and the third valve 130 are open, the first interface 210 can be connected to the fourth interface 240, and the third interface 230 can be connected to the second interface 220, thus achieving interface switching. By setting the jumper pipe 280, the intersecting third and fourth pipes 270 can be made to cross on the same horizontal plane, thereby enabling the valve assembly and pipeline assembly to be installed on the same horizontal plane, which is convenient for installation, and the structure of the valve group is also relatively compact.

[0032] Specifically, the first interface 210 can be connected to the transformer, the second interface 220 can be connected to the outlet of the vacuum oil filter, the third interface 230 can be connected to the oil tank, and the fourth interface 240 can be connected to the inlet of the vacuum oil filter. When oil filling is required, the first valve 110 and the fourth valve 140 are opened, and the second valve 120 and the third valve 130 are closed. The oil in the oil tank is input into the vacuum oil filter through the first pipe 250 for filtration, and then output to the transformer through the first pipe 250, thus realizing oil filling. When oil draining is required, the transformer and the oil tank do not need to be moved. Simply close the first valve 110 and the fourth valve 140, and open the second valve 120 and the third valve 130. The oil in the transformer is input into the inlet of the vacuum oil filter through the jumper pipe 280, and then the filtered oil can be input back to the oil tank through the fourth pipe 270, thus realizing oil recovery. When installing the switching valve assembly, the first valve 110 to the fourth valve 140 are all on the same horizontal plane, which facilitates installation. The first pipe 250 and the second pipe 260 are on both sides and can be directly connected to their respective interfaces without interference. However, the jumper pipe 280 and the fourth pipe 270 need to cross. The diameter of the jumper pipe 280 can be set to be larger, and a hole can be drilled in the jumper pipe 280 for the fourth pipe 270 to pass through. Then, it can be welded and sealed, so that the cross connection can be achieved in roughly the same plane, which facilitates installation and operation.

[0033] Understandably, conventional installation methods require bypassing intersecting pipes with multiple bends and straight pipes, resulting in more pipe fittings and accessories, more welding points, a greater risk of leakage, and more complex installation.

[0034] Reference Figures 1 to 2 In some embodiments of this utility model, the third pipeline is configured as a crossover pipe 280, which includes a branch pipe section 281 and a crossover pipe section 280. The branch pipe section 281, the second valve 120, and the crossover pipe section 280 are connected sequentially. The branch pipe section 281 is connected to the first pipeline 250 between the first interface 210 and the first valve 110, and the crossover pipe section 280 is connected to the second pipeline 260 between the fourth interface 240 and the fourth valve 140. Specifically, the branch pipe section 281 can be configured as an elbow, with one end connected to the first pipeline 250 via a tee and the other end connected to the second valve 120. The crossover pipe section 280 can cross the fourth pipeline 270 and connect to the second pipeline 260, and the connection can also be made using a tee connection.

[0035] Reference Figures 1 to 6In some embodiments of this utility model, a support 300 is also included. One end of the crossover pipe 280 extends to the outside of the first pipe 250, and the other end extends to the outside of the fourth pipe 270. The support 300 is disposed at both ends of the crossover pipe 280, through which both the first pipe 250 and the second pipe 260 pass. Specifically, the support 300 and the crossover pipe 280 can also serve as support members for the first pipe 250, the second pipe 260, and the fourth pipe 270. During installation, the crossover pipe 280 can also have through holes for the first pipe 250 and the second pipe 260 to pass through. After each pipe passes through, it is welded and sealed. With the above structure, the crossover pipe 280 can facilitate cross-connection and also serve as a support member for pipes and valves.

[0036] Reference Figures 1 to 6 In some embodiments of this utility model, the cross-connector 280 section is designed as a square tube structure, with the first pipe 250 and the second pipe 260 passing through the front and rear sidewalls of the cross-connector 280 section. Specifically, the cross-connector 280 section is designed as a square tube structure, and the flat sidewalls facilitate drilling and welding, as well as the connection of the first pipe 250, the second pipe 260, and the fourth pipe 270, making installation relatively convenient.

[0037] Reference Figure 6 In some embodiments of this utility model, the jumper pipe 280 section has a first cavity 2821, the second valve 120 is connected to the first cavity 2821, and the side wall of the second pipe 260 has an opening 261 located within the first cavity 2821. Specifically, the second pipe 260 can have an opening 261 at a corresponding position, and the opening 261 communicates with the inside of the second pipe 260. When installing the second pipe 260, the second pipe 260 can be passed through the jumper pipe 280 section, and the opening 261 is located within the first cavity 2821, which allows the jumper pipe 280 section to communicate with the second pipe 260 without the need for precise cutting and positioning, thus facilitating installation.

[0038] Reference Figure 6 In some embodiments of this invention, the second pipe 260 is provided with two openings 261 extending through it in the vertical direction. This increases the cross-sectional area of ​​the openings 261, ensuring sufficient flow rate.

[0039] Reference Figures 4 to 6In some embodiments of this utility model, the first valve 110, the second valve 120, the third valve 130, and the fourth valve 140 all have rotatable switch handles 150. Each switch handle 150 rotates within its respective rotation plane, which are parallel and inclined relative to the horizontal plane. Specifically, for compact size, the valves are arranged side-by-side and as close as possible to each other. During valve installation, the valves can be deflected at a certain angle, allowing the switch handles 150 to tilt. In this case, the switch handles 150 can be staggered, with their respective rotation planes tilted and staggered, thus avoiding interference between the switch handles 150 and the pipeline.

[0040] Reference Figures 4 to 5 In some embodiments of this utility model, both the first pipe 250 and the second pipe 260 are straight pipes. This allows for direct connection, resulting in a simple structure and compact size.

[0041] Reference Figures 4 to 5 In some embodiments of this utility model, the fourth pipe 270 includes a first elbow section 271, a first straight pipe section 272, a second elbow section 273, and a second straight pipe section 274. The first elbow section 271, the third valve 130, the first straight pipe section 272, the second elbow section 273, and the second straight pipe section 274 are connected sequentially. The first elbow section 271 is connected to the second pipe 260, and the second straight pipe section 274 is connected to the first pipe 250. The first straight pipe section 272 passes through the crossover pipe section 280 to achieve a cross connection with the crossover pipe section 280.

[0042] Reference Figures 1 to 2 In some embodiments of this invention, the second pipe 260 is equipped with a flow switch 410, which is located between the fourth valve 140 and the fourth interface 240, and is positioned close to the fourth interface 240. The third pipe is equipped with a pressure sensor 420, which is located between the second interface 220 and the third valve 130, and is positioned close to the second interface 220. Through the aforementioned flow switch 410 and pressure sensor 420, the flow rate and pressure of the oil circuit can be detected, facilitating the control of the oil circuit.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An inlet / outlet switching valve assembly for a vacuum oil filtration machine, characterized in that, include: The valve assembly includes a first valve (110), a second valve (120), a third valve (130) and a fourth valve (140) arranged side by side in sequence on a horizontal plane; Piping assembly, generally arranged on the same horizontal plane and connected to the valve assembly, the piping assembly having a first interface (210) and a second interface (220) arranged generally opposite to each other, and a third interface (230) and a fourth interface (240) arranged generally opposite to each other; Wherein, a first pipe (250) is provided between the first interface (210) and the second interface (220), and the first pipe (250) is provided with the first valve (110); a second pipe (260) is provided between the third interface (230) and the fourth interface (240), and the second pipe (260) is provided with the fourth valve (140); a third pipe is provided between the first interface (210) and the fourth interface (240); a fourth pipe (270) is provided between the third interface (230) and the second interface (220), and the third pipe is provided with the second valve (120); the fourth pipe (270) is provided with the third valve (130); one of the third pipe and the fourth pipe (270) is provided as a cross-connector (280), and the other can pass through the cross-connector (280).

2. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 1, characterized in that, The third pipeline is designated as the crossover pipe (280), which includes a branch pipe section (281) and a crossover pipe section (280). The branch pipe section (281), the second valve (120), and the crossover pipe section (280) are connected in sequence. The branch pipe section (281) is connected to the first pipeline (250) between the first interface (210) and the first valve (110), and the crossover pipe section (280) is connected to the second pipeline (260) between the fourth interface (240) and the fourth valve (140).

3. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 2, characterized in that, It also includes a support (300), one end of the cross-connector (280) extends to the outside of the first pipe (250) and the other end extends to the outside of the fourth pipe (270). The support (300) is located at both ends of the cross-connector (280) section, and both the first pipe (250) and the second pipe (260) pass through the cross-connector (280) section.

4. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 3, characterized in that, The cross-connector (280) section is designed as a square pipe structure, and the first pipe (250) and the second pipe (260) pass through the front and rear side walls of the cross-connector (280) section.

5. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 3, characterized in that, The cross-connector (280) section has a first cavity (2821), the second valve (120) is connected to the first cavity (2821), and the side wall of the second pipe (260) is provided with an opening (261), the opening (261) being located inside the first cavity (2821).

6. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 5, characterized in that, The second pipe (260) has two openings (261) extending through it in the vertical direction.

7. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 1, characterized in that, The first valve (110), the second valve (120), the third valve (130) and the fourth valve (140) each have a rotatable switch handle (150). Each switch handle (150) is located in a rotation plane when it rotates. Each rotation plane is parallel and inclined relative to the horizontal plane.

8. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 1, characterized in that, Both the first pipe (250) and the second pipe (260) are straight pipes.

9. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 2, characterized in that, The fourth pipeline (270) includes a first elbow section (271), a first straight pipe section (272), a second elbow section (273), and a second straight pipe section (274). The first elbow section (271), the third valve (130), the first straight pipe section (272), the second elbow section (273), and the second straight pipe section (274) are connected in sequence. The first elbow section (271) is connected to the second pipeline (260), and the second straight pipe section (274) is connected to the first pipeline (250). The first straight pipe section (272) passes through the crossover pipe section (280).

10. The inlet and outlet switching valve assembly for a vacuum oil filter according to claim 2, characterized in that, The second pipe (260) is equipped with a flow switch (410), which is located between the fourth valve (140) and the fourth interface (240) and is set close to the fourth interface (240). The third pipe is equipped with a pressure sensor (420), which is located between the second interface (220) and the third valve (130) and is set close to the second interface (220).

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