Long-service-life internal oil type metal expansion pipe oil conservator

Abstract

The utility model discloses a long-service-life internal oil type metal expansion pipe oil conservator. Relates to the technical field of transformer conservators. Comprising a shell and an expansion pipe arranged in the shell, the expansion pipe is used for storing transformer oil and can stretch out and draw back in the vertical direction, the expansion pipe is communicated with a transformer through a pipeline, a movable plate is arranged at the top of the expansion pipe, a limiting rod is arranged in the shell, a transverse sliding hole is formed in the movable plate, the limiting rod is obliquely arranged, and the transverse sliding hole is communicated with the limiting rod. The limiting rod is arranged in the transverse sliding hole in a penetrating mode. A vertical sliding hole is formed in the side, close to the limiting rod, of the shell, an indicating rod is arranged on the limiting rod and located above the movable plate, and one end of the indicating rod is movably connected with the limiting rod and can move in the length direction of the limiting rod. And the other end of the indicating rod penetrates through the vertical sliding hole and extends to the outer side of the shell. The oil quantity of the transformer oil in the expansion pipe can be quickly judged by observing the length of the indicating rod on the outer side of the shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer oil pillow, in particular to a long-life internal oil type metal expansion pipe oil pillow. BACKGROUND

[0002] The transformer oil pillow, as an external oil storage device of the transformer, can adjust the oil volume in the transformer and charge the oil tank when the volume of the transformer oil expands or decreases with the temperature of the oil; the internal oil type metal expansion pipe oil pillow adopts the stainless steel corrugated pipe compensation technology to replace the capsule in the old oil pillow, realizes the volume compensation of the transformer insulating oil and isolation from the outside world, and can effectively prevent the moisture absorption and oxidation of the insulating oil.

[0003] A novel metal corrugated oil pillow oil level monitoring device is disclosed in the Chinese patent document with the publication number CN215911284U, and a metal corrugated oil pillow is specifically disclosed, which is provided with corrugations and a guide rod, the guide rod is fixed on the metal corrugated oil pillow, a float is arranged on the guide rod, the float slides up and down along the guide rod, the lower end of the float is provided with a bracket, one end of the bracket is fixedly connected with the float, and the other end is located at the top end of the corrugations, the lower end of the guide rod is provided with a junction box, and the junction box is located outside the metal corrugated oil pillow. The patent sends signals to the background through the up-and-down sliding float, and realizes the function of real-time monitoring of the oil level change in the metal corrugated oil pillow.

[0004] However, in the above patent, the float is arranged above the metal corrugated oil pillow, and the patrol personnel can only monitor the oil level through the mobile terminal when patrolling on the ground, and cannot directly monitor the oil level through visual means, thereby reducing the fault tolerance of oil level monitoring. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the shortcomings of the prior art, the present application provides a long-life internal oil type metal expansion pipe oil pillow.

[0006] The present application adopts the following technical scheme: a long-life internal oil type metal expansion pipe oil pillow, which comprises a shell and an expansion pipe arranged in the shell, the expansion pipe is used for storing transformer oil and can be extended and retracted in the vertical direction, the expansion pipe is communicated with the transformer through a pipeline, the top of the expansion pipe is provided with a movable plate, a limiting rod is arranged in the shell, a transverse sliding hole is arranged on the movable plate, the limiting rod is arranged obliquely, the limiting rod is arranged in the transverse sliding hole, and the length of the transverse sliding hole is greater than the outer diameter of the limiting rod; a vertical sliding hole is arranged on one side of the shell close to the limiting rod, an indicating rod is arranged on the limiting rod and above the movable plate, one end of the indicating rod is movably connected with the limiting rod and can move along the length direction of the limiting rod, and the other end of the indicating rod penetrates through the vertical sliding hole and extends to the outside of the shell.

[0007] Optionally, the bottom of the shell is provided with a mounting rack connected with the outer wall of the transformer, the limiting rod is arranged on one side of the expansion pipe, the other side of the expansion pipe is provided with a slide rod extending in the vertical direction, the movable plate is provided with a slide sleeve, the slide sleeve is sleeved on the outer side of the slide rod and can slide along the length direction of the slide rod.

[0008] Optionally, the limiting rod is provided with a sliding groove on the side facing the vertical slide hole, the radial section of the sliding groove is in the shape of a Chinese character, the groove bottom of the sliding groove is adaptively provided with a sliding block, the sliding groove extends along the length direction of the limiting rod, and the sliding block can slide in the sliding groove; the indicating rod and the sliding block are connected through a universal joint, and the bottom of the end of the indicating rod connected with the universal joint is attached to the top of the movable plate.

[0009] Optionally, the indicating rod comprises a prismatic part and a cylindrical part arranged coaxially, when the expansion pipe is in the contracted state, the cylindrical part and the prismatic part both extend to the outside of the shell, and when the expansion pipe is in the expanded state, the cylindrical part extends to the outside of the shell and the prismatic part is located inside the shell.

[0010] Optionally, the inner wall of the vertical slide hole is provided with a plurality of bristles, the bristles cover the vertical slide hole, and the prismatic part and the cylindrical part can pass through the bristles and extend to the outside of the shell.

[0011] Compared with the prior art, in the application, the horizontal movement of the indicating rod is realized through the vertical movement of the expansion pipe, so that the oil amount of the transformer oil in the expansion pipe can be quickly judged by observing the length of the indicating rod outside the shell. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic diagram of the application;

[0013] Fig. 2 is an assembly state reference diagram of the limiting rod and the indicating rod;

[0014] Fig. 3 is an assembly state reference diagram of the vertical slide hole and the indicating rod;

[0015] In the drawings: 1, shell; 11, vertical slide hole; 12, mounting rack; 13, bristle; 2, expansion pipe; 3, movable plate; 31, horizontal slide hole; 32, slide sleeve; 4, limiting rod; 41, sliding groove; 42, sliding block; 43, universal joint; 5, indicating rod; 51, prismatic part; 52, cylindrical part; 6, slide rod. DETAILED DESCRIPTION

[0016] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0017] like Figs. 1-3 As shown, a long-life internal oil-type metal expansion tube 2 oil conservator includes a housing 1 and an expansion tube 2 disposed within the housing 1. The expansion tube 2 is used to store transformer oil and can extend and retract in the vertical direction. The expansion tube 2 is connected to the transformer through a pipe. The key feature is that a movable plate 3 is provided at the top of the expansion tube 2, a limiting rod 4 is provided inside the housing 1, a transverse sliding hole 31 is provided on the movable plate 3, the limiting rod 4 is inclined and passes through the transverse sliding hole 31, and the length of the transverse sliding hole 31 is greater than the outer diameter of the limiting rod 4; a vertical sliding hole 11 is provided on the side of the housing 1 near the limiting rod 4, and an indicator rod 5 is provided on the limiting rod 4 and above the movable plate 3. One end of the indicator rod 5 is movably connected to the limiting rod 4 and can move along the length direction of the limiting rod 4, and the other end of the indicator rod 5 passes through the vertical sliding hole 11 and extends to the outside of the housing 1.

[0018] The movable plate 3 is fitted onto the outside of the limiting rod 4 through a transverse sliding hole 31, and the transverse sliding hole 31 is long enough so that when the expansion tube 2 expands or contracts due to changes in the amount of transformer oil inside, the movable plate 3 can reciprocate in the vertical direction. The movement of the movable plate 3 will cause the indicator rod 5 to slide on the limiting rod 4. Because the limiting rod 4 is inclined, when the indicator rod 5 slides along the length direction of the limiting rod 4, the length of the indicator rod 5 extending to the outside of the housing 1 will change. Inspectors can directly and conveniently judge the amount of oil stored in the expansion tube 2 by the length of the indicator rod 5 on the outside of the housing 1.

[0019] A mounting bracket 12 is provided at the bottom of the housing 1, and the mounting bracket 12 is connected to the outer wall of the transformer. A limiting rod 4 is provided on one side of the expansion tube 2, and a sliding rod 6 extending vertically is provided on the other side of the expansion tube 2. A sliding sleeve 32 is provided on the movable plate 3, and the sliding sleeve 32 is fitted on the outside of the sliding rod 6 and can slide along the length of the sliding rod 6. The mounting bracket 12 enables reliable installation of the housing 1 on the outside of the transformer. Through the cooperation of the sliding rod 6 and the sliding sleeve 32, the expansion direction of the expansion tube 2 can be reliably limited, ensuring that the inclined limiting rod 4 will not interfere with the expansion of the expansion tube 2, and also ensuring that the vertical expansion of the expansion tube 2 can be converted into the lateral displacement of the indicator rod 5 for easy observation.

[0020] The limiting rod 4 is provided with a sliding groove 41 on the side facing the vertical sliding hole 11, the radial section of the sliding groove 41 is in the shape of a Chinese character, the groove bottom of the sliding groove 41 is provided with a sliding block 42 in a matched manner, the sliding groove 41 extends along the length direction of the limiting rod 4, and the sliding block 42 can slide in the sliding groove 41. The indicating rod 5 is connected with the sliding block 42 through a universal joint 43, and the bottom of the end of the indicating rod 5 connected with the universal joint 43 is attached to the top of the movable plate 3. The sliding block 42 can slide in the sliding groove 41 but cannot fall out of the sliding groove 41, so that the indicating rod 5 connected with the sliding block 42 can be displaced in the horizontal direction in the sliding process of the sliding block 42, and the oil amount of the transformer oil in the expansion pipe 2 is indicated. Further, the indicating rod 5 is connected with the sliding block 42 through the universal joint 43, so that the indicating rod 5 can always keep the state of extending horizontally and is not affected by the inclined movement of the sliding block 42.

[0021] The indicating rod 5 comprises a prismatic part 51 and a cylindrical part 52 arranged coaxially, when the expansion pipe 2 is in the contracted state, the cylindrical part 52 and the prismatic part 51 both extend to the outside of the shell 1, and when the expansion pipe 2 is in the expanded state, the cylindrical part 52 extends to the outside of the shell 1 and the prismatic part 51 is located inside the shell 1. The shapes of the prismatic part 51 and the cylindrical part 52 are obviously different, when only the cylindrical part 52 is located outside the shell 1, the oil storage amount in the expansion pipe 2 is in a reasonable state, and the patrol personnel can choose whether to fill the transformer oil according to the situation, and when the cylindrical part 52 is entirely located outside the shell 1 and part of the prismatic part 51 is located outside the shell 1, it indicates that the oil storage amount in the expansion pipe 2 is too low, and the patrol personnel needs to fill the transformer oil in the expansion pipe 2 in priority.

[0022] The inner wall of the vertical sliding hole 11 is provided with a plurality of bristles 13, the bristles 13 cover the vertical sliding hole 11, and the prismatic part 51 and the cylindrical part 52 can pass through the bristles 13 and extend to the outside of the shell 1. After the plurality of bristles 13 are arranged, the prismatic part 51 and the cylindrical part 52 can still slide in the vertical sliding hole 11, and the remaining part of the vertical sliding hole 11 will be covered, thereby playing a dustproof role. Further, the prismatic part 51 and the cylindrical part 52 will produce friction with the bristles 13 in the sliding process, thereby playing a cleaning role on the prismatic part 51 and the cylindrical part 52.

[0023] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection claimed by the present application.

Claims

1. A long-life inner-oil type metal expansion pipe oil pillow comprising a housing (1) and an expansion pipe (2) provided in the housing (1), the expansion pipe (2) being used to store transformer oil and being expandable and contractible in a vertical direction, the expansion pipe (2) being in communication with a transformer through a pipe, characterized in that, The top of the expansion pipe (2) is provided with a movable plate (3), the shell (1) is provided with a limiting rod (4) inside, the movable plate (3) is provided with a transverse sliding hole (31), the limiting rod (4) is inclinedly arranged, the limiting rod (4) is arranged in the transverse sliding hole (31), and the length of the transverse sliding hole (31) is greater than the outer diameter of the limiting rod (4); The side of the shell (1) close to the limiting rod (4) is provided with a vertical sliding hole (11), the indicating rod (5) is arranged on the limiting rod (4) and above the movable plate (3), one end of the indicating rod (5) is movably connected with the limiting rod (4) and can move along the length direction of the limiting rod (4), and the other end of the indicating rod (5) passes through the vertical sliding hole (11) and extends to the outside of the shell (1).

2. The long-life internal-cure metal expansion tube gusset of claim 1, wherein, The bottom of the shell (1) is provided with a mounting frame (12), the mounting frame (12) is connected with the outer wall of the transformer, the limiting rod (4) is arranged on one side of the expansion pipe (2), the other side of the expansion pipe (2) is provided with a sliding rod (6) extending in the vertical direction, the movable plate (3) is provided with a sliding sleeve (32), and the sliding sleeve (32) is arranged on the outer side of the sliding rod (6) and can slide along the length direction of the sliding rod (6).

3. The long-life internal-cure metal expansion joint pipe pillow according to claim 1, characterized in that, The side of the limiting rod (4) facing the vertical sliding hole (11) is provided with a sliding groove (41), the radial section of the sliding groove (41) is in the shape of a Chinese character 'N', the groove bottom of the sliding groove (41) is adaptively provided with a sliding block (42), the sliding groove (41) extends along the length direction of the limiting rod (4), and the sliding block (42) can slide in the sliding groove (41); The indicating rod (5) and the sliding block (42) are connected through a universal joint (43), and the bottom of the end of the indicating rod (5) connected with the universal joint (43) is attached to the top of the movable plate (3).

4. The long-life internal-cure metal expansion joint pipe pillow according to claim 3, characterized in that, The indicating rod (5) comprises a prismatic part (51) and a cylindrical part (52) arranged coaxially, when the expansion pipe (2) is in a contracted state, the cylindrical part (52) and the prismatic part (51) both extend to the outside of the shell (1), and when the expansion pipe (2) is in an expanded state, the cylindrical part (52) extends to the outside of the shell (1) and the prismatic part (51) is located on the inside of the shell (1).

5. The long-life internal-cure metal expansion joint pipe pillow according to claim 4, characterized in that, The inner wall of the vertical sliding hole (11) is provided with a plurality of bristles (13), the bristles (13) cover the vertical sliding hole (11), and the prismatic part (51) and the cylindrical part (52) can pass through the bristles (13) and extend to the outside of the shell (1).

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