Oil-immersed box-type transformer oil gathering pit system suitable for outdoor environment

Abstract

The utility model discloses an oil-immersed box-type transformer oil collecting pit system suitable for an open-air environment, which comprises an oil collecting pit body used for receiving oil discharged by an oil-immersed box-type transformer; the drainage pipe penetrates through the bottom of the oil collection pit body and is used for draining water in the oil collection pit body; the pipe orifice cover is detachably mounted at the pipe orifice of the drainage pipe and is used for closing and opening the drainage pipe; and the buoyancy triggering mechanism is arranged in the oil collecting pit body, connected with the pipe opening cover and used for pulling the pipe opening cover open by utilizing buoyancy when the liquid level in the oil collecting pit body reaches a set value. According to the utility model, the function of automatically draining rainwater is realized, and the problem that leaked oil of the transformer cannot be collected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to an oil-immersed box-type transformer oil sump system suitable for outdoor environment. Background Art

[0002] In the fields of photovoltaic and wind power new energy, an oil-immersed box-type transformer is a kind of transformer equipment often used in photovoltaic power generation areas. Since the oil in this type of transformer may leak and spill onto the ground, which will have an impact on the environment, an oil sump is usually set when making the foundation of the oil-immersed box-type transformer.

[0003] The existing oil-immersed box-type transformer oil sump is generally made of concrete casting and has an open setting. It is found in use that this kind of oil sump will be filled with rainwater in rainy weather. At this time, if oil leaks, it will be unfavorable for collecting the target amount of oil, and it is not convenient to drain the water in the oil sump after the weather clears up. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an oil-immersed box-type transformer oil sump system suitable for outdoor environment that can automatically drain rainwater.

[0005] To achieve the above purpose, the utility model provides an oil-immersed box-type transformer oil sump system suitable for outdoor environment, including:

[0006] An oil sump body for receiving the oil discharged from the oil-immersed box-type transformer;

[0007] A drain pipe passing through the bottom of the oil sump body for draining the water in the oil sump body;

[0008] A pipe orifice cover detachably installed at the orifice of the drain pipe for closing and opening the drain pipe;

[0009] A buoyancy trigger mechanism arranged in the oil sump body and connected to the pipe orifice cover for pulling open the pipe orifice cover by buoyancy when the liquid level in the oil sump body reaches a set value.

[0010] Further, the buoyancy trigger mechanism includes a lever, a floating body and a cable. One end of the lever is rotatably connected to the side wall of the oil sump body, the floating body is connected to the other end of the lever, one end of the cable is connected to the pipe orifice cover, and the other end of the cable is connected to the middle part of the lever.

[0011] Further, the buoyancy trigger mechanism further includes a spring, and the spring is connected between the other end of the cable and the middle part of the lever.

[0012] Further, the buoyancy trigger mechanism further includes a pulley, the pulley is installed on the bottom wall of the oil sump body, and the cable passes around the pulley.

[0013] Further, two spaced support rods are fixed on the bottom wall of the oil sump body, a first rotating shaft is rotatably installed on the two support rods, the pulley is sleeved on the first rotating shaft, and the cable is located in the channel formed by the two support rods and the first rotating shaft.

[0014] Further, it further includes a manual control handle. A sleeve is fixed on the side wall of the oil sump body. One end of the lever is fixed with a second rotating shaft, the second rotating shaft is rotatably sleeved in the sleeve, and the manual control handle is fixed on the second rotating shaft.

[0015] Further, the pipe orifice cover is installed at the pipe orifice of the drain pipe through an elastic connecting member.

[0016] Further, the elastic connecting member includes a U-shaped rod and a collar. The pipe orifice cover is connected to one end of the U-shaped rod, the collar is connected to the other end of the U-shaped rod, the collar is fixedly sleeved on the drain pipe, and the pipe orifice cover seals the pipe orifice of the drain pipe.

[0017] Further, the inner side surface of the middle part of the U-shaped rod is designed to be serrated.

[0018] The beneficial effects of the present utility model are embodied in:

[0019] During the use of the oil sump system of the present utility model, when the water in the pit accumulates to a certain water depth, under the action of buoyancy, the floating body rises, and then the floating body pulls the cable, and the cable pulls the pipe orifice cover, so that the pipe orifice cover disengages from the pipe orifice of the drain pipe, thereby opening the drain pipe to drain water outwards. If an oil leakage fault occurs at this time, the increase of the oil body will also further promote the opening of the pipe orifice cover through the floating body, so as to drain the water in the lower part of the pit, while the oil body still floats in the upper part. The present utility model realizes the function of automatically draining rainwater and avoids the problem of being unable to collect the oil leakage of the transformer. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of an oil sump system of an oil-immersed box-type transformer applicable to an outdoor environment according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the enlarged view at A in

[0022] Figure 3 is Figure 1 the schematic diagram of the pulley installation structure in

[0023] Description of the Reference Numerals:

[0024] 1. Oil sump body; 2. Drain pipe; 3. Pipe orifice cover; 4. Lever; 5. Floating body; 6. Cable; 7. Spring; 8. Pulley; 9. Manual handle; 10. Support rod; 11. First rotating shaft; 12. Sleeve; 13. Second rotating shaft; 14. U-shaped rod; 15. Collar. Detailed implementation manner

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] See Figures 1 to 3 。

[0027] The oil sump system of the oil-immersed box-type transformer applicable to the open-air environment of the present invention includes:

[0028] An oil sump body 1 for receiving the oil discharged from the oil-immersed box-type transformer;

[0029] A drain pipe 2 is arranged through the bottom of the oil sump body 1 for discharging the water in the oil sump body 1;

[0030] A pipe orifice cover 3 is detachably installed at the pipe orifice of the drain pipe 2 for closing and opening the drain pipe 2;

[0031] A buoyancy trigger mechanism is arranged in the oil sump body 1 and connected to the pipe orifice cover 3 for pulling open the pipe orifice cover 3 by buoyancy when the liquid level in the oil sump body 1 reaches a set value (the liquid level in the pit when wanting to trigger the opening of the pipe orifice cover during specific implementation);

[0032] The buoyancy trigger mechanism includes a lever 4, a floating body 5 and a cable 6. One end of the lever 4 is rotatably connected to the side wall of the oil sump body 1, the floating body 5 is connected to the other end of the lever 4, one end of the cable 6 is connected to the pipe orifice cover 3, and the other end of the cable 6 is connected to the middle of the lever 4.

[0033] During the use of the oil sump system of the present invention, when the water in the pit accumulates to a certain water depth, under the action of buoyancy, the floating body rises, and then the floating body pulls the cable, and the cable pulls the pipe orifice cover, so that the pipe orifice cover is separated from the pipe orifice of the drain pipe, thereby opening the drain pipe to drain water outwards. If an oil leakage failure occurs at this time, the increase of the oil body will also further cause the pipe orifice cover to open through the floating body, thereby discharging the water at the lower part of the pit, while the oil body still floats on the upper part.

[0034] In one embodiment, the buoyancy trigger mechanism further includes a spring 7, and the spring 7 is connected between the other end of the cable 6 and the middle part of the lever 4. With this design, on the one hand, the spring can be used to reset the buoyancy trigger mechanism, and on the other hand, it can be used to adjust the trigger force of the buoyancy trigger mechanism.

[0035] In one embodiment, the buoyancy trigger mechanism further includes a pulley 8, the pulley 8 is installed on the bottom wall of the oil sump body 1, and the cable 6 bypasses the pulley 8. With this design, the pulley can be used to change the direction of the cable and improve the efficiency of the buoyancy effect. In specific implementation, the pulley is located below the middle part of the lever in the horizontal state. In this way, the cable is as perpendicular to the lever as possible, and the acting efficiency of the lever on the cable is greater.

[0036] In one embodiment, two spaced support rods 10 are fixed on the bottom wall of the oil sump body 1, a rotating shaft one 11 is rotatably installed on the two support rods 10, the pulley 8 is sleeved on the rotating shaft one 11, and the cable 6 is located in the channel formed by the two support rods 10 and the rotating shaft one 11. With this design, the installation is convenient, and the cable is not easily separated from the pulley. In the figure, the schematic width of the pulley is relatively narrow. In actual use, a wide pulley corresponding to the length of the rotating shaft one can be selected, and the cable is even less likely to separate.

[0037] In one embodiment, it further includes a manual control handle 9. A sleeve 12 is fixed on the side wall of the oil sump body 1. One end of the lever 4 is fixed with a rotating shaft two 13, and the rotating shaft two 13 is rotatably sleeved in the sleeve 12, and the manual control handle 9 is fixed on the rotating shaft two 13. With this design, when manual drainage is required during the operation and maintenance stage, it is convenient to control the opening and closing of the drain pipe through the manual control handle, which is convenient for draining the oil sump after the weather clears.

[0038] In one embodiment, the pipe orifice cover 3 is installed at the pipe orifice of the drain pipe 2 through an elastic connecting piece. The elastic connecting piece is used for installing the pipe orifice cover on the one hand, and can also adjust the trigger force of the buoyancy trigger mechanism on the other hand.

[0039] In one embodiment, the elastic connecting piece includes a U-shaped rod 14 and a collar 15. The pipe orifice cover 3 is connected to one end of the U-shaped rod 14, the collar 15 is connected to the other end of the U-shaped rod 14, the collar 15 is fixedly sleeved on the drain pipe 2, and the pipe orifice cover 3 seals the pipe orifice of the drain pipe 2. With this design, the structure is simple. Under the elastic force of the elastic connecting piece, the pipe orifice cover blocks the pipe orifice of the drain pipe. When triggered, it is necessary to overcome the elastic force of the elastic connecting piece.

[0040] In one embodiment, the inner side surface of the middle part of the U-shaped rod 14 is designed to be serrated. With this design, it is easier to achieve the elastic effect of the elastic connecting piece.

[0041] In specific implementation, the rotational installation position of one end of the lever is set according to requirements (the liquid level in the pit when it is desired to trigger the opening of the pipe orifice cover during specific implementation), and it can be verified by adding water to select a suitable installation position. Generally, the water storage depth in the oil sump needs to ensure that there is still a certain amount of water storage at the lower part after all the oil bodies are drained. At the same time, under normal circumstances, when there is no water storage and when the target oil volume is full, the opening of the pipe orifice cover will not be triggered. The utility model controls the opening and closing of the pipe orifice cover at the bottom of the pit by the combined cooperation of a floating body, a lever, a spring, and an elastic connecting piece, thereby controlling the water storage depth.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An oil-immersed box-type transformer oil collection pit system suitable for open-air environments, characterized in that: include: The oil collection pit body is used to receive the oil discharged from the oil-immersed box-type transformer; A drainage pipe is installed at the bottom of the oil collection pit body to drain the water in the oil collection pit body; The pipe mouth cover is detachably installed at the pipe mouth of the drain pipe and is used to close and open the drain pipe; The buoyancy trigger mechanism is arranged in the oil collecting pit body and connected with the pipe opening cover, and is used for pulling open the pipe opening cover by utilizing buoyancy when the liquid level in the oil collecting pit body reaches a set value.

2. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 1, characterized in that: The buoyancy trigger mechanism includes a lever, a float and a cable, one end of the lever is rotatably connected to the side wall of the oil collection pit body, the float is connected to the other end of the lever, one end of the cable is connected to the nozzle cover, and the other end of the cable is connected to the middle of the lever.

3. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 2, characterized in that: The buoyancy triggering mechanism also includes a spring, which is connected between the other end of the cable and the middle part of the lever.

4. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 2, characterized in that: The buoyancy triggering mechanism further comprises a pulley, which is mounted on the bottom wall of the oil collection pit body, and the cable passes around the pulley.

5. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 4, characterized in that: Two spaced support rods are fixed on the bottom wall of the oil collection pit body, a rotating shaft 1 is rotatably mounted on the two support rods, the pulley is passed through the rotating shaft 1, and the cable is located in a channel surrounded by the two support rods and the rotating shaft 1.

6. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to any one of claims 2 to 5, characterized in that: It also includes a hand-controlled handle. A sleeve is fixed on the side wall of the oil collection pit body. A second rotating shaft is fixed on one end of the lever. The second rotating shaft is rotatably sleeved in the sleeve, and the hand-controlled handle is fixed on the second rotating shaft.

7. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to any one of claims 1 to 5, characterized in that: The pipe opening cover is installed at the pipe opening of the drain pipe through an elastic connecting piece.

8. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 7, characterized in that: The elastic connecting piece includes a U-shaped rod and a ring, the pipe mouth cover is connected to one end of the U-shaped rod, the ring is connected to the other end of the U-shaped rod, the ring is fixedly sleeved on the drain pipe, and the pipe mouth cover seals the pipe mouth of the drain pipe.

9. The oil-immersed box-type transformer oil collection pit system suitable for open-air environment according to claim 8, characterized in that: The inner side surface of the middle part of the U-shaped rod is designed in a sawtooth shape.

Images