Pipeline rapid butt joint mechanism and transformer on-site oil injection device

Abstract

The utility model relates to the technical field of transformer on-site oil injection, in particular to a pipeline rapid butt joint mechanism and a transformer on-site oil injection device, which comprise a fixing component, a butt joint component, a butt joint component, a butt joint component, a butt joint component, a butt joint component, a butt joint component, a butt joint component and a butt joint component, and are characterized in that the fixing component comprises a first fixing pipe, a connecting pipe and a second fixing pipe; the butt joint component comprises a guide assembly, a driving assembly arranged on the outer side of the guide assembly, a sliding assembly arranged in the driving assembly, a clamping assembly arranged at the lower end of the driving assembly and a springback assembly arranged on one side of the driving assembly, and the pipelines on the two sides can be clamped together through the design of the clamping assembly; through cooperation of the driving assembly, the sliding assembly and the rebounding assembly, the rapid and efficient effect can be achieved, so that fixation through screwing is avoided, and a large amount of time can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer on-site oil injection, in particular to a pipeline quick docking mechanism and a transformer on-site oil injection device. Background Art

[0002] Transformer vacuum oil filling refers to injecting transformer oil into the oil tank under the condition of vacuum inside the transformer tank to remove air and moisture in the oil tank and improve the insulation performance and service life of the transformer. In the process of transformer manufacturing and maintenance, vacuum oil filling is a very important process. The traditional oil filling method is to inject transformer oil directly into the oil tank and then pump out the oil through an oil pump to remove air and moisture in the oil tank.

[0003] The transformer on-site oil filling device is used by butt joint of pipes. In the usual pipe butt joint process, the pipe interfaces at both ends are generally fixed by screwing. This butt joint method is troublesome and time-consuming. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problem that the docking method is slow in the above or prior art, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a pipeline quick docking mechanism.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: including:

[0008] A fixing component, comprising a fixing pipe 1, a connecting pipe arranged at one end of the fixing pipe, and a fixing pipe 2 arranged at one end of the connecting pipe;

[0009] A docking component, comprising a guide assembly, a driving assembly arranged outside the guide assembly, a sliding assembly arranged inside the driving assembly, a clamping assembly arranged at the lower end of the driving assembly, and a rebound assembly arranged at one side of the driving assembly;

[0010] Wherein, the driving assembly is connected to the locking assembly, and the driving assembly is connected to the rebound assembly.

[0011] As a preferred solution of the pipeline quick docking mechanism of the utility model, wherein: the guide assembly includes a round tube arranged at a lower end of the fixed tube, a cavity arranged inside the round tube, and a guide tube arranged below the cavity;

[0012] Wherein, the guide tube is arranged inside the circular tube.

[0013] As a preferred solution of the pipeline quick docking mechanism of the utility model, wherein: the driving assembly includes a cylinder arranged outside the circular tube, a displacement column arranged at the upper end of the cylinder, a connecting slot column arranged at one end of the displacement column, and a displacement cylinder arranged outside the connecting slot column;

[0014] Wherein, the displacement column is connected to the clamping assembly, and the displacement cylinder is arranged in the cylinder.

[0015] As a preferred solution of the pipeline quick docking mechanism of the utility model, wherein: the sliding assembly includes a slot plate arranged at the lower end of the connecting slot column, a slide groove arranged inside the displacement cylinder, an arc-shaped spring sheet arranged on one side of the slot plate, and a clamping groove arranged on the inner wall of one side of the displacement cylinder;

[0016] Wherein, the slot plate is slidably arranged in the slide groove, and the slot plate is connected to the rebound component.

[0017] As a preferred solution of the pipeline quick docking mechanism of the utility model, wherein: the clamping assembly includes a connecting rod provided at one end of the displacement column, a rotating seat provided at the middle end of the connecting rod, a sliding rod provided at the other end of the connecting rod, a square groove provided at the lower end of the cylinder, and a movable groove provided at one end of the sliding rod;

[0018] The sliding rod is slidably arranged in the square groove, the connecting rod is movably arranged in the movable groove, and the rotating seat is fixedly connected to the outer wall of the cylinder.

[0019] As a preferred solution of the pipeline quick docking mechanism of the utility model, wherein: the rebound component includes a spring 1 arranged below the groove plate, a push column arranged below the spring 1, and a spring 2 arranged outside the push column;

[0020] Wherein, the push column is fixedly connected to the outer side of the cylinder.

[0021] As a preferred solution of the pipeline quick docking mechanism of the utility model, it also includes a blocking component, which includes a triangular spring piece arranged at the upper end of the guide tube and an elastic gasket arranged at the outer side of the guide tube.

[0022] The beneficial effects of the pipe quick docking mechanism of the utility model are as follows: the pipes on both sides can be snapped together through the design of the snap-fit ​​assembly, and a quick and efficient effect can be achieved through the cooperation of the driving assembly, the sliding assembly and the rebound assembly, thereby avoiding fixation by screwing, and thus saving a lot of time.

[0023] In view of the fact that the air and moisture are not completely exhausted in actual use, a transformer on-site oil filling device is proposed.

[0024] In order to solve the above technical problems, the utility model also provides the following technical solutions: including a pipeline quick docking mechanism and a vacuum pumping assembly; which is arranged at one end of the fixed pipe;

[0025] The oil injection component is arranged on one side of the vacuum pumping component.

[0026] As a preferred solution of the transformer on-site oil filling device of the utility model, the vacuum pumping assembly includes a vacuum pumping tube arranged at one end of a fixed tube, a vacuum pumping unit arranged below the vacuum pumping tube, a three-way pipe joint arranged above the vacuum pumping tube, a valve one arranged on the three-way pipe joint, and a valve two arranged on one side of the valve one.

[0027] As a preferred solution of the transformer on-site oil filling device of the utility model, the oil filling assembly includes a metal bellows oil conservator arranged on one side of the vacuum unit, an oil filling pipe arranged on one side of the metal bellows oil conservator, an on-load opening oil pipe arranged above the metal bellows oil conservator, a valve three arranged above the metal bellows oil conservator, and a valve four arranged at one end of the valve three.

[0028] The transformer on-site oil filling device of the utility model has the beneficial effects of: when the transformer oil tank is evacuated, transformer oil is injected into the oil tank, and air and moisture in the oil are extracted by the vacuum effect, thereby improving the insulation performance and service life of the transformer. The advantages of transformer vacuum oil filling are fast oil filling speed, thorough exhaust of air and moisture, and effective improvement of the insulation performance and service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 It is a schematic diagram of the overall structure of the pipeline quick docking mechanism of the utility model.

[0031] Figure 2 It is a schematic diagram of the cross-sectional structure of the pipeline quick docking mechanism of the utility model.

[0032] Figure 3 For the utility model Figure 1 Schematic diagram of the structure in another orientation.

[0033] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0034] Figure 5 This is a schematic diagram of the structure of the drive assembly of the utility model.

[0035] Figure 6 For the utility model Figure 5 Schematic diagram of another orientation of the central structure.

[0036] Figure 7 For the utility model Figure 6 Schematic diagram of the middle part structure.

[0037] Figure 8 This is a structural schematic diagram of Example 2 of the present utility model.

[0038] Fig. 9 This is a schematic plan view of embodiment 3 of the present utility model DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] Reference Figures 1 to 7, is the first embodiment of the utility model, which provides a pipeline quick docking mechanism, including, a fixing component 100, which includes a fixing pipe 101, a connecting pipe 102 arranged at the end of the fixing pipe 101, and a fixing pipe 2 103 arranged at one end of the connecting pipe 102; a docking component 200, which includes a guide component 201, a driving component 202 arranged outside the guide component 201, a sliding component 205 arranged inside the driving component 202, a clamping component 203 arranged at the lower end of the driving component 202, and a rebound component 204 arranged at one side of the driving component 202; wherein the driving component 202 is connected to the clamping component 203, and the driving component 202 is connected to the rebound component 204;

[0044] The connecting tube 102 is fixedly connected to the second fixed tube 103, and the inner diameter of the connecting tube 102 is smaller than the diameter of the second fixed tube 103. There is a step at the connection between the connecting tube 102 and the second fixed tube 103. The fixed tube 101 is fixedly connected to the docking assembly. The locking assembly 203 is first unlocked by the driving assembly 202, and then one end of the connecting tube 102 is connected to the first fixed tube 101 through the guide assembly 201. Then, the driving assembly 202 is pressed to trigger the rebound assembly 204, so that the locking assembly 203 clamps the step between the connecting tube 102 and the second fixed tube 103, thereby completing the fixation. By pressing instead of screwing, the work efficiency is greatly improved regardless of docking or disassembly.

[0045] Furthermore, the guide assembly 201 includes a circular tube 201a arranged at the lower end of the fixed tube 101, a cavity 201b arranged inside the circular tube 201a, and a guide tube 201c arranged below the cavity 201b; wherein, the guide tube 201c is arranged inside the circular tube 201a, the fixed tube 101 is fixedly connected to the circular tube 201a, the outer wall of the circular tube 201a is fixedly connected with a rebound assembly 204, the circular tube 201a is slidably connected to the locking assembly 203, and the lower end of the guide tube 201c is arranged in an arc shape, which is used to facilitate the introduction of the connecting tube 102 into the circular tube 201a, so that the connecting tube 102 is connected to the cavity 201b.

[0046] Furthermore, the driving component 202 includes a cylinder 202d arranged on the outside of the circular tube 201a, a displacement column 202a arranged on the upper end of the cylinder 202d, a connecting slot column 202b arranged at one end of the displacement column 202a, and a displacement cylinder 202c arranged on the outside of the connecting slot column 202b; wherein, the displacement column 202a is connected to the clamping component 203, the displacement cylinder 202c is arranged in the cylinder 202d, the displacement column 202a is slidably arranged on the upper end of the cylinder 202d, the displacement column 202a is connected to the connecting slot column 202b, and the displacement column 202a is pressed to drive the connecting slot column 202b to move downward, thereby driving the sliding component 205 to slide in the displacement cylinder 202c.

[0047] Furthermore, the sliding assembly 205 includes a slot plate 205a arranged at the lower end of the connecting slot column 202b, a slide groove 205c arranged inside the displacement cylinder 202c, and an arc-shaped spring piece 205d arranged on one side of the slot plate 205a; wherein, the slot plate 205a is slidably arranged in the slide groove 205c, and the slot plate 205a is connected to the rebound assembly 204. As the connecting slot column 202b descends, the slot plate 205a is driven to compress the arc-shaped spring piece 205d downward, so that the tip of the arc-shaped spring piece 205d enters the slot, thereby forming a lock, so that the engaging assembly 203 connected to the driving assembly 202 will no longer continue to move.

[0048] Further, the engaging assembly 203 includes a connecting rod 203b provided at one end of the displacement column 202a, a rotating seat 203a provided at the middle end of the connecting rod 203b, a sliding rod 203c provided at the other end of the connecting rod 203b, a square groove 203e provided at the lower end of the cylinder 202d, and a movable groove 203d provided at one end of the sliding rod 203c, wherein the sliding rod 203c is slidably provided in the square groove 203e, the connecting rod 203b is movably provided in the movable groove 203d, and the rotating seat 203a is fixedly connected to the outer wall of the cylinder 202d;

[0049] Since the connecting rod 203b is fixedly connected to the displacement column 202a, pressing the connecting rod 203b will drive the displacement column 202a to move, so that the connecting slot column 202b drives the slot plate 205a to move radially toward the circular tube 201a. The movement of the slot plate 205a will cause the tip of the arc-shaped spring piece 205d fixedly connected to the slot plate 205a to enter the slot. In this process, due to the setting of the rotating seat 203a, the other end of the connecting rod 203b will move in the movable slot 203d, so that the connecting rod 203b drives the sliding rod 203c to slide in the square slot 203e, so that the sliding rod 203c moves away from one end of the square slot 203e, thereby moving away from the connection between the connecting tube 102 and the fixed tube 103, thereby facilitating disassembly or installation.

[0050] Furthermore, the rebound assembly 204 includes a spring 1 204a disposed below the slot plate 205a, a push column 204b disposed below the spring 1 204a, and a spring 2 204c disposed outside the push column 204b; wherein the push column 204b is fixedly connected to the outside of the cylinder 202d, and when the displacement column 202a is pressed again, the connecting slot column 202b will be driven to move radially along the circular tube 201a. Since the connecting slot column 202b is divided into upper and lower ends, and the diameter of the upper end is larger than the diameter of the lower end, when the movement continues, It will drive the slot plate 205a to slide laterally along the slide slot 205c, so that the tip of the arc spring piece 205d is away from the slot, and due to the setting of the spring 1 204a, the push column 204b and the spring 2 204c, the slot plate 205a drives the connecting slot column 202b to move in the direction of the displacement column 202a, thereby lifting the displacement column 202a, so that the connecting rod 203b can be reset, and when the connecting rod 203b is reset, the sliding rod 203c will move toward the direction of the fixed tube 2 103, thereby forming a clamping connection.

[0051] Operation process: In the initial state, the end of the sliding rod 203c away from the square groove 203e is connected to the upper end of the fixed pipe 2 103, and this state is the state of pipeline connection.

[0052] During the disassembly process, the connecting rod 203b is pressed to drive the displacement column 202a to move toward the circular tube 201a, thereby driving the connecting slot column 202b to move, thereby driving the slot plate 205a to move toward the circular tube 201a, so that the tip of the arc-shaped spring piece 205d is inserted into the slot to form a lock. During this process, the connecting rod 203b drives the sliding rod 203c to slide in the square slot 203e, so that the end of the sliding rod 203c away from the square slot 203e moves away from the connection between the connecting tube 102 and the fixed tube 103;

[0053] During the installation process, the displacement column 202a is pressed again, driving the connecting slot column 202b to move radially along the circular tube 201a, thereby driving the slot plate 205a to slide laterally along the slide groove 205c, so that the tip of the arc spring piece 205d is away from the slot. Since the spring 1 204a and the spring 2 204c lose their restrictions, they will release the elastic force in the reverse direction, thereby driving the connecting slot column 202b to move in the direction of the displacement column 202a, so that the connecting rod 203b is reset. At this time, the sliding rod 203c will move in the direction of the fixed tube 2 103, thereby forming a snap connection.

[0054] Example 2

[0055] Reference Figures 1 to 8, which is the second embodiment of the utility model. It is different from the previous embodiment in that it also includes a blocking component 300, which includes a triangular spring piece 301 arranged at the upper end of the guide tube 201c, and an elastic gasket 302 arranged on the outside of the guide tube 201c. A plurality of triangular spring pieces 301 are provided to seal the end of the guide tube 201c connected to the cavity 201b, and the triangular spring piece 301 is fixedly connected to the top of the guide tube 201c. When the connecting tube 102 is inserted into the guide tube 201c, the triangular spring piece 301 will be lifted up, so that the channel in the tube is unobstructed, and the pipeline is closed when it is pulled out, thereby preventing oil from falling down when the pipeline is disassembled and polluting the environment. The design of the elastic gasket is to prevent the end of the triangular spring piece 301 connected to the guide tube 201c from being unstable and causing oil leakage.

[0056] The rest of the structure is the same as that of Example 1.

[0057] Operation process: When the connecting tube 102 is inserted into the guide tube 201c, the triangular spring piece 301 will be lifted up, and when it is pulled out, the pipeline will be closed.

[0058] Example 3

[0059] Reference Figures 1 to 9 , which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides a transformer on-site oil filling device; including a pipeline quick docking mechanism, and a vacuum assembly 400; which is arranged at one end of the fixed pipe 103; an oil filling assembly 500; which is arranged on one side of the vacuum assembly 400;

[0060] The vacuum assembly 400 is fixedly connected to the fixed tube 103, and the oil injection assembly 500 is fixedly connected to the fixed tube 101. When vacuuming is required, the vacuum assembly 400 and the oil injection assembly 500 can be quickly docked through the cooperation between the docking components 200. When maintenance is required, rapid disassembly can also be achieved through the docking assembly.

[0061] Specifically, the vacuum assembly 400 includes a vacuum tube 401 arranged at one end of the fixed tube 101, a vacuum unit 402 arranged below the vacuum tube 401, a three-way pipe joint 403 arranged above the vacuum tube 401, a valve 1 404 arranged at the three-way pipe joint 403, and a valve 2 405 arranged on one side of the valve 1 404. The vacuum port must be connected to the highest point that can be vacuumed. When the body is filled with oil or replenished with oil, the vacuum state must be maintained. If degassing is required, the degassing port is 200 to 300 mm away from the oil surface. When vacuuming, valve 3 503 and valve 4 504 are opened.

[0062] Furthermore, the oil filling assembly 500 includes a metal bellows oil storage cabinet 501 disposed on one side of the vacuum unit, an oil filling pipe 502 disposed on one side of the metal bellows oil storage cabinet 501, an on-load opening oil filling pipe 502 disposed above the metal bellows oil storage cabinet 501, a valve 3 503 disposed above the metal bellows oil storage cabinet 501, and a valve 4 504 disposed at one end of the valve 3 503. The breathing port of the metal bellows oil storage cabinet 501501 is opened to allow natural air intake, and the exhaust port of the oil storage cabinet is opened when the air intake stops, and the exhaust port of the oil storage cabinet is closed after the oil discharge is stabilized;

[0063] When the transformer oil tank is evacuated, transformer oil is injected into the tank, and the air and moisture in the oil are extracted by the vacuum effect, thereby improving the insulation performance and service life of the transformer. The advantages of transformer vacuum oil filling are fast oil filling speed, thorough exhaust of air and moisture, and effective improvement of the insulation performance and service life of the transformer.

[0064] The remaining structures are the same as those in Example 1 or 2.

[0065] Operation process: first vacuumize, prepare or make relevant pipe joints for oil, drain the water from the vacuum unit and oil filter, check the ultimate vacuum and leakage rate of the main body (including pipelines), the oil pipeline and oil filter must drain the internal residual oil, rinse them, and connect the main body with the switch oil chamber. If the main body oil storage cabinet cannot be vacuumized, the cover seal must be disconnected. When vacuuming, valve three 503 and valve four 504 are opened, valves one 404 and two are opened, and the cover seal at the oil filling pipe 502 is closed.

[0066] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0067] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0068] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pipeline quick docking mechanism, characterized in that: include, A fixing component (100), comprising a fixing pipe (101), a connecting pipe (102) arranged at one end of the fixing pipe (101), and a fixing pipe (103) arranged at one end of the connecting pipe (102); A docking component (200), comprising a guide component (201), a driving component (202) arranged outside the guide component (201), a sliding component (205) arranged inside the driving component (202), a locking component (203) arranged at the lower end of the driving component (202), and a rebound component (204) arranged at one side of the driving component (202); Wherein, the driving component (202) is connected to the locking component (203), and the driving component (202) is connected to the rebound component (204).

2. The pipeline quick docking mechanism according to claim 1, characterized in that: The guide assembly (201) comprises a circular tube (201a) arranged at the lower end of the fixed tube (101), a cavity (201b) arranged inside the circular tube (201a), and a guide tube (201c) arranged below the cavity (201b); Wherein, the guide tube (201c) is arranged inside the circular tube (201a).

3. The pipeline quick docking mechanism according to claim 2, characterized in that: The driving assembly (202) comprises a cylinder (202d) arranged outside the circular tube (201a), a displacement column (202a) arranged at the upper end of the cylinder (202d), a connecting slot column (202b) arranged at one end of the displacement column (202a), and a displacement cylinder (202c) arranged outside the connecting slot column (202b); The displacement column (202a) is connected to the locking assembly (203), and the displacement cylinder (202c) is disposed inside the cylinder (202d).

4. The pipeline quick docking mechanism according to claim 3, characterized in that: The sliding assembly (205) comprises a slot plate (205a) arranged at the lower end of the connecting slot column (202b), a slide slot (205c) arranged inside the displacement cylinder (202c), and an arc-shaped spring sheet (205d) arranged at one side of the slot plate (205a); The slot plate (205a) is slidably disposed in the slide groove (205c), and the slot plate (205a) is connected to the rebound component (204).

5. The pipeline quick docking mechanism according to claim 4, characterized in that: The engaging assembly (203) comprises a connecting rod (203b) provided at one end of the displacement column (202a), a rotating seat (203a) provided at the middle end of the connecting rod (203b), a sliding rod (203c) provided at the other end of the connecting rod (203b), a square groove (203e) provided at the lower end of the cylinder (202d), and a movable groove (203d) provided at one end of the sliding rod (203c); The sliding rod (203c) is slidably arranged in the square groove (203e), the connecting rod (203b) is movably arranged in the movable groove (203d), and the rotating seat (203a) is fixedly connected to the outer wall of the cylinder (202d).

6. The pipeline quick docking mechanism according to claim 5, characterized in that: The rebound assembly (204) comprises a spring 1 (204a) disposed below the slot plate (205a), a push column (204b) disposed below the spring 1 (204a), and a spring 2 (204c) disposed outside the push column (204b); Wherein, the push column (204b) is fixedly connected to the outer side of the cylinder (202d).

7. The pipeline quick docking mechanism according to claim 6, characterized in that: It also includes a blocking assembly (300), which includes a triangular spring sheet (301) arranged on the upper end of the guide tube (201c), and an elastic gasket (302) arranged on the outside of the guide tube (201c).

8. A transformer on-site oil filling device, characterized in that: It comprises the pipeline quick docking mechanism as claimed in any one of claims 6 to 7, and a vacuum assembly (400); which is arranged at one end of the second fixed pipe (103); The oil injection assembly (500) is arranged on one side of the vacuum extraction assembly (400).

9. The transformer on-site oil injection device according to claim 8, characterized in that: The vacuum pumping assembly (400) comprises a vacuum pumping tube (401) arranged at one end of a fixed tube (101), a vacuum pumping unit (402) arranged below the vacuum pumping tube (401), a three-way pipe joint (403) arranged above the vacuum pumping tube (401), a valve (404) arranged on the three-way pipe joint (403), and a valve (405) arranged on one side of the valve (404).

10. The transformer on-site oil injection device according to claim 9, characterized in that: The oil filling assembly (500) comprises a metal bellows oil storage cabinet (501) arranged on one side of the vacuum unit, an oil filling pipe (502) arranged on one side of the metal bellows oil storage cabinet (501), an on-load opening oil pipe (503) arranged above the metal bellows oil storage cabinet (501), a valve three (504) arranged above the metal bellows oil storage cabinet (501), and a valve four (505) arranged at one end of the valve three (504).

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