Parallel oil injection device of oil-immersed transformer

Abstract

The utility model discloses a parallel oil injection device of an oil-immersed transformer, which relates to the technical field of oil-immersed transformers and comprises a suction structure, an oil storage structure and two oil injection structures. Each oil injection structure comprises a main pipeline assembly and a branch pipeline assembly, a suction port is formed in the main pipeline assembly, the branch pipeline assembly comprises a plurality of branch pipelines, the branch pipelines are arranged on the main pipeline assembly at intervals, and the branch pipelines communicate with the main pipeline assembly; the number of the branch pipelines is consistent with that of the oil-immersed transformers, and the branch pipelines are in one-to-one correspondence with the oil-immersed transformers; each branch pipeline is provided with an oil injection port for communicating with the corresponding oil-immersed transformer; wherein the suction port of one oil injection structure is communicated with the suction structure, and the suction port of the other oil injection structure is communicated with the oil storage structure. The parallel oil injection device of the oil-immersed transformer can inject insulating oil into a plurality of oil-immersed transformers at the same time, and the injection efficiency of the insulating oil is high.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed transformers, in particular to a parallel oil injection device for oil-immersed transformers. Background Art

[0002] In electrical equipment, insulating oil can isolate live parts with different potentials to prevent short circuits. Therefore, transformers usually use oil-immersed transformers. Oil-immersed transformers can prevent transformer coils from being exposed to the air by placing the transformer coils in insulating oil, thereby increasing dielectric strength. At present, an oil injection device is usually used to inject insulating oil into an oil-immersed transformer. However, the oil injection device can only inject insulating oil into one oil-immersed transformer alone, and the injection efficiency of insulating oil is low. Utility Model Content

[0003] The main purpose of the utility model is to provide a parallel oil injection device for oil-immersed transformers, aiming to solve the technical problem that the current oil injection device can only inject insulating oil into one oil-immersed transformer alone and the injection efficiency of the insulating oil is low.

[0004] To achieve the above-mentioned purpose, the utility model proposes a parallel oil filling device for an oil-immersed transformer, the parallel oil filling device for the oil-immersed transformer comprising a suction structure, an oil storage structure and two oil filling structures; each of the oil filling structures comprises a main line component and a branch line component, the main line component is formed with a suction port, the branch line component comprises a plurality of branch pipes, a plurality of the branch pipes are arranged at intervals on the main line component, and each of the branch pipes is connected to the main line component; the number of the branch pipes is consistent with the number of the oil-immersed transformers and corresponds one to one, and each of the branch pipes is formed with an oil filling port for connecting to the corresponding oil-immersed transformer; the suction port of one of the oil filling structures is connected to the suction structure, and the suction port of the other oil filling structure is connected to the oil storage structure.

[0005] In one embodiment, the main pipeline assembly includes a main pipeline and a branch pipeline, one end of the main pipeline is connected to the branch pipeline, the other end of the main pipeline forms the suction port, and a plurality of branch pipelines are connected to the branch pipeline at intervals.

[0006] In one embodiment, each of the branch pipelines is provided with an on-off valve, and the on-off valve is located between the oil filling port and the diversion pipeline.

[0007] In one embodiment, the branch pipeline includes a hard pipe section and a soft pipe section, one end of the hard pipe section is connected to the shunt pipeline, the on-off valve is arranged on the hard pipe section, the end of the hard pipe section away from the shunt pipeline is a first connecting end, the two ends of the soft pipe section are respectively a second connecting end and an oil filling end, the second connecting end is connected to the first connecting end, and the oil filling port is distributed at the oil filling end.

[0008] In one embodiment, a pipe joint is installed on the first connection end, the second connection end is sleeved outside the pipe joint, and the inner wall of the second connection end is sealingly matched with the outer wall of the pipe joint.

[0009] In one embodiment, a plurality of protrusions are formed on the outer wall of the pipe joint.

[0010] In one embodiment, the second connection end is sleeved on the outside of the pipe joint through a pipe clamp.

[0011] In one embodiment, the hose section is a steel wire hose.

[0012] In one embodiment, the oil storage structure and the suction structure are both connected to the corresponding suction port via a quick-connect male connector; and / or each of the oil filling ports is connected to the corresponding transformer via a quick-connect male connector.

[0013] In one embodiment, the suction structure is a vacuum unit, and the oil storage structure is an oil filter unit.

[0014] The technical solution of the utility model adopts two suction ports of the oil injection structure to be connected with the suction structure and the oil storage structure respectively. The oil injection structure includes a main pipeline component and multiple branch pipelines. The oil injection ports of the multiple branch pipelines are respectively connected with multiple oil-immersed transformers. The suction structure then sucks the oil injection structure connected thereto, and the multiple branch pipelines of the oil injection structure respectively suck the multiple oil-immersed transformers, so that negative pressure is formed in the oil-immersed transformers. Then, the insulating oil in the oil storage structure is respectively sucked into the multiple oil-immersed transformers through the multiple branch pipelines of the oil injection structure connected to the oil storage structure, thereby completing the oil injection process of the oil-immersed transformer. The parallel oil injection device of the oil-immersed transformer of the present invention can inject insulating oil into multiple oil-immersed transformers at the same time through the cooperation of the suction structure, the oil storage structure and the two oil injection structures, and the efficiency of injecting insulating oil is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of an embodiment of a parallel oil injection device for an oil-immersed transformer provided by the utility model;

[0017] Figure 2 It is a structural schematic diagram of the oil injection structure in one embodiment of the parallel oil injection device for oil-immersed transformers provided by the utility model.

[0018] Description of Figure Numbers:

[0019] 100. Parallel oil injection device; 10. Suction structure; 20. Oil storage structure; 30. Oil injection structure; 31. Main pipeline assembly; 311. Suction port; 312. Main pipeline; 313. Diversion pipeline; 32. Branch pipeline assembly; 321. Branch pipeline; 322. On-off valve; 323. Hard pipe section; 3231. First connection end; 324. Flexible pipe section; 3241. Second connection end; 3242. Oil injection end; 325. Pipe joint; 33. Quick-connect male connector; 34. Oil injection port; 200. Oil-immersed transformer.

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] At present, when injecting insulating oil into an oil-immersed transformer, the insulating oil is usually injected into an oil-immersed transformer through a parallel oil injection device, and the efficiency of injecting insulating oil is low. Therefore, it is necessary to propose a parallel oil injection device for an oil-immersed transformer to solve the problem of low efficiency of injecting insulating oil into the oil-immersed transformer.

[0025] The utility model provides a parallel oil injection device 100 for an oil-immersed transformer 200 .

[0026] See also Figure 1 and Figure 2 In one embodiment of the utility model, the parallel oil filling device 100 of the oil-immersed transformer 200 includes a suction structure 10, an oil storage structure 20 and two oil filling structures 30; each oil filling structure 30 includes a main line component 31 and a branch line component 32, the main line component 31 is formed with a suction port 311, the branch line component 32 includes a plurality of branch pipes 321, the plurality of branch pipes 321 are arranged at intervals on the main line component 31, and each branch pipe 321 is connected to the main line component 31; the number of branch pipes 321 is consistent with the number of oil-immersed transformers 200 and corresponds one to one, and each branch pipe 321 is formed with an oil filling port 34 for connecting to the corresponding oil-immersed transformer 200; the suction port 311 of one oil filling structure 30 is connected to the suction structure 10, and the suction port 311 of the other oil filling structure 30 is connected to the oil storage structure 20.

[0027] The technical solution of the utility model provides a suction structure 10, an oil storage structure 20 and two oil injection structures 30, wherein the suction ports 311 of the two oil injection structures 30 are respectively connected to the suction structure 10 and the oil storage structure 20, and the oil injection structure 30 includes a main pipeline component 31 and a plurality of branch pipes 321, and the oil injection ports 34 of the plurality of branch pipes 321 are respectively connected to a plurality of oil-immersed transformers 200. The suction structure 10 sucks the oil injection structure 30 connected thereto, and the plurality of branch pipes 321 of the oil injection structure 30 suck the plurality of oil-immersed transformers 200 respectively, so that negative pressure is formed in the oil-immersed transformers 200, and then the insulating oil in the oil storage structure 20 is respectively sucked into the plurality of oil-immersed transformers 200 through the plurality of branch pipes 321 of the oil injection structure 30 connected to the oil storage structure 20, thereby completing the oil injection process of the oil-immersed transformer 200. The parallel oil injection device 100 of the oil-immersed transformer 200 of the present invention can simultaneously inject insulating oil into multiple oil-immersed transformers 200 through the cooperation of the suction structure 10, the oil storage structure 20 and the two oil injection structures 30, and the efficiency of injecting insulating oil is relatively high.

[0028] In one embodiment of the utility model, the main pipeline assembly 31 includes a main pipeline 312 and a branch pipeline 313. One end of the main pipeline 312 is connected to the branch pipeline 313. The other end of the main pipeline 312 forms a suction port 311. A plurality of branch pipelines 321 are connected to the branch pipeline 313 at intervals.

[0029] Specifically, Figure 2 As shown, a branch pipe 313 is connected to the end of the main pipe 312 away from the suction port 311, and multiple branch pipes 321 are connected to the branch pipe 313 at intervals. By setting the branch pipe 313, multiple branch pipes 321 can be arranged more reasonably, and the number of branch pipes 321 that can be connected only needs to increase the length of the branch pipe 313. It is simple, convenient and has a reasonable structure.

[0030] In an embodiment of the present invention, each branch pipeline 321 is provided with an on-off valve 322 , and the on-off valve 322 is located between the oil filling port 34 and the diversion pipeline 313 .

[0031] Specifically, Figure 2 As shown, the on-off valve 322 on the branch pipeline 321 can be used to control the opening or closing of the branch pipeline 321. When a branch pipeline 321 is not needed, the on-off valve 322 can be used to close the branch pipeline 321, which is more flexible and convenient.

[0032] In one embodiment of the utility model, the branch pipe 321 includes a hard pipe section 323 and a soft pipe section 324, one end of the hard pipe section 323 is connected to the shunt pipe 313, the on-off valve 322 is arranged on the hard pipe section 323, and the end of the hard pipe section 323 away from the shunt pipe 313 is the first connection end 3231, and the two ends of the soft pipe section 324 are respectively the second connection end 3241 and the oil filling end 3242, the second connection end 3241 is connected to the first connection end 3231, and the oil filling port 34 is distributed at the oil filling end 3242.

[0033] Specifically, Figure 2 As shown, the branch pipeline 321 includes a hard pipe section 323 and a hose section 324. Since the hose section 324 can be bent, the oil filling port 34 on the hose section 324 can be more conveniently connected to the corresponding oil-immersed transformer 200 by bending the hose section 324, which is flexible, convenient and highly applicable.

[0034] In an embodiment of the present invention, the first connection end 3231 is installed with a pipe joint 325 , the second connection end 3241 is sleeved outside the pipe joint 325 , and the inner wall of the second connection end 3241 is sealed with the outer wall of the pipe joint 325 .

[0035] Specifically, Figure 2 As shown, the second connection end 3241 and the first connection end 3231 can be quickly connected through the pipe joint 325, and the inner wall of the second connection end 3241 is sealed with the outer wall of the pipe joint 325, which can prevent the insulating oil from leaking from between the inner wall of the second connection end 3241 and the outer wall of the pipe joint 325 to avoid contamination.

[0036] In one embodiment of the utility model, a plurality of protrusions are formed on the outer wall of the pipe joint 325. By forming a plurality of protrusions on the outer wall of the pipe joint 325, the outer wall of the pipe joint 325 can be made rougher, thereby further improving the sealing effect of the sealing cooperation between the inner wall of the second connecting end 3241 and the outer wall of the pipe joint 325, and achieving better sealing.

[0037] In an embodiment of the present invention, the second connection end 3241 is sleeved on the outside of the pipe joint 325 through a pipe clamp, so that the second connection end 3241 can be more firmly sleeved on the outside of the pipe joint 325, and the reliability is higher.

[0038] In one embodiment of the present invention, the hose section 324 is a steel hose, which has good tensile and compressive resistance, so that it can maintain a stable shape and function when subjected to external pressure or tension, is not easy to be damaged or deformed, and has good durability.

[0039] In one embodiment of the utility model, the oil storage structure 20 and the suction structure 10 are both connected to their corresponding suction ports 311 via a quick-connect male connector 33; and / or, each oil filling port 34 is connected to its corresponding transformer via a quick-connect male connector 33.

[0040] Specifically, Figure 1 to Figure 2 As shown, the quick-connect male connector 33 uses the quick-connect male connector 33 in the prior art to connect the suction port 311 to the oil storage structure 20 or the suction structure 10 through the quick-connect male connector 33, and then the quick-connect male connector 33 connects the oil filling port 34 to its corresponding transformer, and the connection is quick and convenient.

[0041] In an embodiment of the present invention, the suction structure 10 is a vacuum unit, and the oil storage structure 20 is an oil filter unit.

[0042] Specifically, the vacuum pumping unit and the oil filter unit both use the vacuum pumping unit and the oil filter unit in the prior art. The vacuum pumping unit, as the suction structure 10, can efficiently extract the gas in the oil-immersed transformer 200 to form a negative pressure. The oil filter unit, as the oil storage structure 20, can filter the impurities and pollutants in the insulating oil to ensure the quality and cleanliness of the insulating oil.

[0043] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A parallel oil injection device for an oil-immersed transformer, characterized in that: The parallel oil filling device of the oil-immersed transformer includes a suction structure, an oil storage structure and two oil filling structures; each of the oil filling structures includes a main line component and a branch line component, the main line component is formed with a suction port, the branch line component includes a plurality of branch pipes, the plurality of branch pipes are arranged at intervals on the main line component, and each of the branch pipes is connected to the main line component; the number of the branch pipes is consistent with the number of the oil-immersed transformers and corresponds one to one, and each of the branch pipes is formed with an oil filling port for connecting to the corresponding oil-immersed transformer; the suction port of one of the oil filling structures is connected to the suction structure, and the suction port of the other oil filling structure is connected to the oil storage structure.

2. The parallel oil injection device for oil-immersed transformer according to claim 1, characterized in that: The main pipeline assembly includes a main pipeline and a branch pipeline. One end of the main pipeline is connected to the branch pipeline, and the other end of the main pipeline forms the suction port. A plurality of branch pipelines are connected to the branch pipeline at intervals.

3. The parallel oil injection device for oil-immersed transformers according to claim 2, characterized in that: Each branch pipeline is provided with an on-off valve, and the on-off valve is located between the oil filling port and the diversion pipeline.

4. The parallel oil injection device for an oil-immersed transformer according to claim 3, characterized in that: The branch pipeline includes a hard pipe section and a soft pipe section, one end of the hard pipe section is connected to the shunt pipeline, the on-off valve is arranged on the hard pipe section, the end of the hard pipe section away from the shunt pipeline is a first connecting end, the two ends of the soft pipe section are respectively a second connecting end and an oil filling end, the second connecting end is connected to the first connecting end, and the oil filling port is distributed at the oil filling end.

5. The parallel oil injection device for oil-immersed transformers according to claim 4, characterized in that: The first connection end is provided with a pipe joint, the second connection end is sleeved outside the pipe joint, and the inner wall of the second connection end is sealed with the outer wall of the pipe joint.

6. The parallel oil injection device for oil-immersed transformers according to claim 5, characterized in that: A plurality of protrusions are formed on the outer wall of the pipe joint.

7. The parallel oil injection device for oil-immersed transformers according to claim 5, characterized in that: The second connecting end is sleeved on the outside of the pipe joint through a pipe clamp.

8. The parallel oil injection device for oil-immersed transformers according to claim 4, characterized in that: The hose section is a steel wire hose.

9. The parallel oil injection device for an oil-immersed transformer according to any one of claims 1 to 8, characterized in that: The oil storage structure and the suction structure are both connected to the corresponding suction port via a quick-connect male connector; and / or each of the oil filling ports is connected to the corresponding transformer via a quick-connect male connector.

10. The parallel oil injection device for an oil-immersed transformer according to any one of claims 1 to 8, characterized in that: The suction structure is a vacuum unit, and the oil storage structure is an oil filter unit.

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