Simple oil-filled test sleeve

Abstract

The utility model provides a simple oil filling test sleeve which comprises an oil tank pipe, grading rings are installed at the two ends of the oil tank pipe, a conducting rod concentric with the oil tank pipe is inserted in the oil tank pipe, and the two ends of the conducting rod penetrate through the grading rings and are connected with the grading rings. An oil tank supporting sleeve fixedly connected with the oil tank pipe is arranged in the middle of the oil tank pipe in a sleeving mode, an oil draining valve is installed on the lower portion of the outer surface of one end of the oil tank pipe, an oil injecting valve is installed on the upper portion of the outer surface of the end, away from the oil draining valve, of the oil tank pipe, and an explosion relief valve is arranged on one side of the oil injecting valve. The beneficial effects of the utility model are that: utilize the high compressive strength of transformer oil to satisfy the test safety distance under the condition that the wall is not dismantled, also can be used for the wall, equipment and other obstacles under the condition that the test channel size is not big enough.

Description

Technical Field

[0001] The utility model relates to a simple oil-filled test bushing, belonging to the field of AC withstand voltage testing. Background Art

[0002] When constructing 110kV and higher substations in cities, due to space constraints and public resistance, they are often designed as enclosed structures, with the main transformer, GIS, and other equipment completely enclosed within the building. The construction process is divided into civil construction and equipment installation, with equipment installation typically performed after the civil construction has passed inspection. During equipment installation, AC withstand voltage testing is often performed last. However, in the absence of dedicated test channels within the civil construction, AC withstand voltage testing is often performed through windows. However, existing windows are often not large enough, necessitating the brute force removal of a section of the wall and subsequent repairs after the test is complete. This is dangerous, time-consuming, and expensive. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a simple oil-filled test bushing to solve the problems raised in the above-mentioned background technology. The present invention utilizes the high compressive strength of transformer oil to meet the test safety distance without demolishing the wall. It can also be used to pass through obstacles such as walls and equipment when the test channel size is not large enough.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a simple oil-filled test sleeve, including a tank pipe, both ends of the tank pipe are equipped with equalizing rings, a conductive rod concentrically arranged with the tank pipe is inserted in the tank pipe, both ends of the conductive rod pass through the equalizing ring and are connected to the equalizing ring, a tank support sleeve connected and fixed to the tank pipe is provided at the middle position of the tank pipe, an oil drain valve is installed at the lower position of the outer surface of one end of the tank pipe, an oil filling valve is installed at the upper position of the outer surface of the end of the tank pipe away from the oil drain valve, an explosion-proof safety valve is provided on one side of the oil filling valve, and the explosion-proof safety valve is connected and communicated with the tank pipe.

[0005] Furthermore, the conductive rod is sleeved with a plurality of evenly arranged pipe sleeves, and the outer surface of the pipe sleeve is annularly and equidistantly mounted with three support rods, and the support rods are in contact with the inner wall of the oil tank pipe.

[0006] Furthermore, two symmetrically arranged support plates are installed on the outer surface of the fuel tank support sleeve, two plug sleeves are symmetrically installed on the lower surface of the support plate, a bottom frame is provided directly below the fuel tank support sleeve, and plug rods are installed at the four corners of the upper surface of the bottom frame, and the upper ends of the plug rods are inserted into the plug sleeves.

[0007] Furthermore, a plurality of strip-shaped openings are equidistantly formed on the upper surface of the support plate, and the strip-shaped openings are arranged along the width direction of the support plate.

[0008] Furthermore, blind holes are processed at the four corners of the upper surface of the bottom frame, and the lower ends of the insertion rods are fixed in the blind holes.

[0009] Furthermore, a ring is connected and fixed to the side of the pressure equalizing ring facing the fuel tank pipe, and the ring is sleeved on the fuel tank pipe and connected and fixed to the fuel tank pipe.

[0010] Furthermore, a circular hole is provided in the middle of one side of the grading ring, and the conductive rod passes through the circular hole.

[0011] Beneficial effects of the utility model:

[0012] 1. Since transformer oil can be filled on site, the weight of the test pipe sleeve is greatly reduced to facilitate on-site installation. The oil tank pipe is filled with transformer oil. The materials are easy to purchase, the structure is simple, and the cost is low. The oil tank pipe is made of insulating materials such as PVC pipe and is filled with qualified transformer oil to play an insulating role. The oil tank support sleeve is made of metal material. The oil tank support sleeve is wrapped around the outer surface of the oil tank pipe to support and uniform the electric field. The grading ring is installed at both ends of the oil tank pipe, and its center is connected to the conductive rod to play a role in uniforming the electric field.

[0013] 2. Fill the oil filling valve with qualified transformer oil until the oil level overflows the outer wall of the oil tank pipe. Let it stand for twelve hours to allow the transformer oil bubbles in the oil tank pipe to overflow. Then close the oil filling valve and pass the high-voltage lead of the test equipment through the conductive rod for testing. After the test, remove the high-voltage lead, open the oil drain valve and use a clean oil drum to recover the transformer oil for next use. The high compressive strength of the transformer oil can meet the test safety distance without demolishing the wall. It can also be used to pass through obstacles such as walls and equipment when the test channel size is not large enough. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a structural diagram of a simple oil-filled test casing of the utility model;

[0016] Figure 2 This is a schematic diagram of the assembly of the conductive rod and the oil tank pipe in a simple oil-filled test casing of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of a pipe sleeve, a support rod and a conductive rod in a simple oil-filled test sleeve of the utility model;

[0018] In the figure: 1- oil tank pipe, 2- ring, 3- pressure equalizing ring, 4- oil drain valve, 5- support plate, 6- plug rod, 7- bottom frame, 8- plug sleeve, 9- conductive rod, 10- oil filling valve, 11- explosion-proof safety valve, 12- oil tank support sleeve, 13- strip port, 14- support rod, 15- pipe sleeve. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figure 1 The utility model provides a technical solution: a simple oil-filled test sleeve, including a fuel tank pipe 1, with equalizing rings 3 installed at both ends of the fuel tank pipe 1, and a ring 2 is connected and fixed to the side of the equalizing ring 3 facing the fuel tank pipe 1, so that the ring 2 is sleeved on the fuel tank pipe 1 and connected and fixed to the fuel tank pipe 1, thereby increasing the connection range between the equalizing ring 3 and the fuel tank pipe 1. The equalizing ring 3 is installed at both ends of the fuel tank pipe 1, and its center is connected to the conductive rod 9, which plays the role of uniform electric field.

[0021] See Figure 1-Figure 3 A conductive rod 9 is inserted into the fuel tank pipe 1 and is arranged concentrically with the fuel tank pipe 1. Both ends of the conductive rod 9 pass through the equalizing ring 3 and are connected to the equalizing ring 3. A circular hole is opened in the middle of one side of the equalizing ring 3, and the conductive rod 9 passes through the circular hole. A plurality of evenly arranged pipe sleeves 15 are sleeved on the conductive rod 9. The outer surface of the pipe sleeve 15 is annular and three support rods 14 are installed at equal intervals. The support rod 14 is in contact with the inner wall of the fuel tank pipe 1. The structure formed by the support rod 14 and the pipe sleeve 15 supports the conductive rod 9.

[0022] See Figure 1 The middle part of the fuel tank pipe 1 is provided with a fuel tank support sleeve 12 which is connected and fixed to the fuel tank pipe 1. Two symmetrically arranged support plates 5 are installed on the outer surface of the fuel tank support sleeve 12. A plurality of strip openings 13 are equidistantly provided on the upper surface of the support plate 5 along the width direction of the support plate 5, thereby reducing the amount of material used for the support plate 5. Two plug sleeves 8 are symmetrically provided on the lower surface of the support plate 5. A bottom frame 7 is provided just below the fuel tank support sleeve 12. Insert rods 6 are installed in the blind holes provided at the four corners of the upper surface of the bottom frame 7, so that the upper end of the insert rod 6 is inserted in the insert sleeve 8 to complete the connection between the insert rod 6 and the support plate 5. At this time, the fuel tank pipe 1 is lifted, which is convenient for the horizontal placement of the fuel tank pipe 1 during the oil filling process.

[0023] See Figure 1-Figure 3, an oil drain valve 4 is installed at the lower position of the outer surface of one end of the oil tank pipe 1, and an oil filling valve 10 is installed at the upper position of the outer surface of the end of the oil tank pipe 1 away from the oil drain valve 4. An explosion-proof safety valve 11 is provided on one side of the oil filling valve 10. The explosion-proof safety valve 11 is connected to the oil tank pipe 1 and communicates with the explosion-proof safety valve 11. The explosion-proof safety valve 11 plays a role in safely relieving the pressure of the oil tank pipe 1. Fill the oil filling valve 10 with qualified transformer oil until the oil level overflows the outer wall of the oil tank pipe 1. Let it stand for twelve hours to allow the transformer oil bubbles in the oil tank pipe 1 to overflow, then close the oil filling valve 10, and test the high-voltage lead of the test equipment through the conductive rod 9. After the test, remove the high-voltage lead, open the oil drain valve 4 and return it with a clean oil barrel. The transformer oil is collected for future use. The high compressive strength of the transformer oil can meet the test safety distance without demolishing the wall. It can also be used to pass through obstacles such as walls and equipment when the test channel is not large enough. Since the transformer oil can be refilled on site, the weight of the test pipe sleeve 15 is greatly reduced to facilitate on-site installation. The oil tank pipe 1 is filled with transformer oil, the material is easy to purchase, the structure is simple, and the cost is low. The oil tank pipe 1 is made of insulating materials such as PVC pipe and is filled with qualified transformer oil to play an insulating role. The oil tank support sleeve 12 is made of metal material and is wrapped around the outer surface of the oil tank pipe 1 to play a supporting and uniform electric field role.

[0024] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A simple oil-filled test casing, comprising a fuel tank pipe (1), characterized in that: Both ends of the oil tank pipe (1) are equipped with equalizing rings (3), and a conductive rod (9) arranged concentrically with the oil tank pipe (1) is inserted in the oil tank pipe (1), and both ends of the conductive rod (9) pass through the equalizing ring (3) and are connected to the equalizing ring (3). A fuel tank support sleeve (12) connected and fixed to the oil tank pipe (1) is sleeved at the middle position of the oil tank pipe (1), and an oil drain valve (4) is installed at the lower position of the outer surface of one end of the oil tank pipe (1), and an oil filling valve (10) is installed at the upper position of the outer surface of the end of the oil tank pipe (1) away from the oil drain valve (4). An explosion-proof safety valve (11) is provided on one side of the oil filling valve (10), and the explosion-proof safety valve (11) is connected and communicated with the oil tank pipe (1).

2. The simple oil-filled test casing according to claim 1, characterized in that: The conductive rod (9) is sleeved with a plurality of evenly arranged pipe sleeves (15), and the outer surface of the pipe sleeve (15) is annularly and equidistantly mounted with three support rods (14), and the support rods (14) are in contact with the inner wall of the oil tank pipe (1).

3. The simple oil-filled test casing according to claim 1, characterized in that: Two symmetrically arranged support plates (5) are installed on the outer surface of the fuel tank support sleeve (12), and two plug sleeves (8) are symmetrically installed on the lower surface of the support plate (5). A bottom frame (7) is provided directly below the fuel tank support sleeve (12), and plug rods (6) are installed at the four corners of the upper surface of the bottom frame (7), and the upper ends of the plug rods (6) are inserted into the plug sleeves (8).

4. The simple oil-filled test casing according to claim 3, characterized in that: The upper surface of the support plate (5) is provided with a plurality of strip-shaped openings (13) at equal intervals, and the strip-shaped openings (13) are arranged along the width direction of the support plate (5).

5. The simple oil-filled test casing according to claim 3, characterized in that: Blind holes are processed at the four corners of the upper surface of the bottom frame (7), and the lower ends of the insertion rods (6) are fixed in the blind holes.

6. The simple oil-filled test casing according to claim 1, characterized in that: A ring (2) is connected and fixed to the side of the pressure equalizing ring (3) facing the fuel tank pipe (1); the ring (2) is sleeved on the fuel tank pipe (1) and connected and fixed to the fuel tank pipe (1).

7. The simple oil-filled test casing according to claim 1, characterized in that: A circular hole is provided in the middle of one side of the voltage-equalizing ring (3), and the conductive rod (9) passes through the circular hole.

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