Oil sampling valve device

Abstract

The invention discloses an oil sampling valve device which comprises a conical laminated oil sampling nozzle, the side face of the oil sampling nozzle is fixedly connected with a blocky sealing plug through a rope, the upper portion of the oil sampling nozzle is fixedly connected to a third circular flange plate, and the upper portion of the third flange plate is fixedly connected with a second oil drainage valve. A circular second flange plate is fixedly connected above the second oil drain valve, a metal oil sampling pipeline is fixedly connected above the second flange plate, a first flange plate is fixedly connected above the metal oil sampling pipeline, a first oil drain valve is fixedly connected above the first flange plate, and a fourth flange plate is fixedly connected above the first oil drain valve; the device is simple in structure and easy to process and assemble, can effectively reduce the personal risk in the oil sampling work of the transformer on-load tap-changer, improves the working efficiency, and is economical and convenient to implement due to the technical characteristics.

Description

Technical Field

[0001] The invention belongs to the field of power system equipment detection, and in particular relates to a safe and efficient oil sampling device for a transformer on-load tap changer. Background Art

[0002] Transformer oil plays the role of insulation, cooling and arc extinguishing inside the transformer, ensuring the safe and stable operation of the transformer. During the operation of the transformer, the internal transformer oil will produce impurities such as gas. The purpose of taking oil samples is to analyze the specific composition of the gas in the transformer oil, so as to judge the operating status of the transformer and analyze the internal faults of the transformer.

[0003] The oil sampling work of the transformer on-load tap-changer is usually carried out when the equipment is energized. Due to the design of the transformer, the oil drain port of the transformer on-load tap-changer is too high from the ground and there is no special oil sampling valve. A long ladder must be set up for oil sampling, which cannot ensure a safe working distance. It is very easy to cause electric shock and high-altitude falls, posing a great threat to the personal safety of maintenance personnel.

[0004] Extend the oil drain pipeline of the transformer's on-load switch and install a special oil sampling valve to reduce the personal risks faced by maintenance personnel and improve maintenance work efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an oil sampling valve device, which can solve the problem that the oil drain port of the transformer on-load tap changer is too high from the ground and there is no special oil sampling valve. A long ladder must be set up to carry out oil sampling work, and a safe working distance cannot be guaranteed, which can easily cause electric shock and high-altitude falls, posing a great threat to the personal safety of maintenance personnel.

[0006] In order to solve the above problems, the present invention provides an oil sampling valve device, including: a conical stacked oil sampling nozzle, the side of the oil sampling nozzle is fixedly connected to a block sealing plug by a rope, the top of the oil sampling nozzle is fixedly connected to a circular third flange, the top of the third flange is fixedly connected to a second oil drain valve, the top of the second oil drain valve is fixedly connected to a circular second flange, the top of the second flange is fixedly connected to a metal oil sampling pipeline, the top of the metal oil sampling pipeline is fixedly connected to a first flange, the top of the first flange is fixedly connected to a first oil drain valve, and the top of the first oil drain valve is fixedly connected to a fourth flange.

[0007] In a preferred embodiment, the metal oil sampling pipeline passes through the third flange, the fourth flange, the second flange, and the first flange.

[0008] In a preferred embodiment, the metal oil sampling pipeline passes through the first flange and is engaged with the first oil drain valve.

[0009] In a preferred embodiment, the metal oil sampling pipeline passes through the second flange and is engaged with the second oil drain valve.

[0010] In a preferred embodiment, the oil sampling nozzle passes through the third flange and is engaged with the second oil drain valve.

[0011] In a preferred embodiment, the first oil drain valve and the second oil drain valve are composed of an elliptical chamber, and the right side of the chamber is fixedly connected to a circular handle by a steel rod.

[0012] The beneficial effects of the present invention are as follows: the device has a simple structure, is easy to process and assemble, can effectively reduce the personal risk in the oil sampling work of the transformer on-load tap changer, improves the working efficiency, and is easy to implement with its economical and technical characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the oil sampling valve device of the present invention;

[0014] Figure 2 This is a schematic diagram of the use of the oil sampling valve device of the present invention;

[0015] In the figure: 1. first flange; 2. metal oil sampling pipeline; 3. second flange; 4. second oil drain valve; 5. oil sampling nozzle; 6. sealing plug; 7. first oil drain valve; 8. metal fixing bracket; 9. transformer body; 10. third flange; 11. fourth flange. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0017] Embodiment 1:

[0018] like Figure 1 As shown, the present invention is mainly composed of a first flange 1, a metal oil sampling pipeline 2, a second flange 3, a second oil drain valve 4, an oil sampling nozzle 5, and a sealing plug 6. The first flange 1, the metal oil sampling pipeline 2, and the second flange 3 are all made of stainless steel, and the oil sampling nozzle 5 is made of pure copper to ensure the overall mechanical strength and corrosion resistance of the device. The various components of the device are connected by cold-dip galvanized bolts, and sealing rubber rings are installed on the connecting end faces to ensure the overall performance of the device.

[0019] like Figure 2As shown, when installing and using, the first flange 1 is connected to the outlet of the first oil drain valve 7 through cold-dip galvanized bolts, the first oil drain valve 7 is communicated with the on-load tap changer body, a sealing rubber ring is installed on the butt surface, and the metal oil sampling pipeline 2 is connected to the transformer body 9 through the metal fixing bracket 8 to ensure that the overall installation of the device is stable. Open the first oil drain valve 7 and the second oil drain valve 4, and the transformer oil will flow out through the oil sampling nozzle 5. After completing the oil sampling work, tighten the second oil drain valve and cover the sealing plug 6.

[0020] The device does not need to be disassembled after installation, which is convenient for future oil sampling. When the transformer is operating normally, the first oil drain valve 7 remains in a normally open state, and the second oil drain valve 4 remains in a normally closed state.

[0021] Embodiment 2:

[0022] An oil sampling valve device comprises: a conical stacked oil sampling nozzle (5), the side of the oil sampling nozzle (5) is fixedly connected to a block-shaped sealing plug (6) by a rope, the top of the oil sampling nozzle (5) is fixedly connected to a circular third flange (10), the top of the third flange (10) is fixedly connected to a second oil drain valve (4), the top of the second oil drain valve (4) is fixedly connected to a circular second flange (3), the top of the second flange (3) is fixedly connected to a metal oil sampling pipeline (2), the top of the metal oil sampling pipeline (2) is fixedly connected to a first flange (1), the top of the first flange (1) is fixedly connected to a first oil drain valve (7), and the top of the first oil drain valve (7) is fixedly connected to a fourth flange (11).

[0023] The metal oil sampling pipeline (2) passes through the third flange (10), the fourth flange (11), the second flange (3), and the first flange (1).

[0024] The metal oil sampling pipeline (2) passes through the first flange (1) and is engaged with the first oil drain valve (7).

[0025] The metal oil sampling pipeline (2) passes through the second flange (3) and is engaged with the second oil drain valve (4).

[0026] The oil sampling nozzle (5) passes through the third flange (10) and is engaged with the second oil drain valve (4).

[0027] The first oil discharge valve (7) and the second oil discharge valve (4) are composed of an elliptical chamber, and the right side of the chamber is fixedly connected to a circular handle via a steel rod.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An oil sampling valve device, characterized in that: include: A conical stacked oil sampling nozzle (5), the side of the oil sampling nozzle (5) is fixedly connected to a block-shaped sealing plug (6) by a rope, the top of the oil sampling nozzle (5) is fixedly connected to a circular third flange (10), the top of the third flange (10) is fixedly connected to a second oil drain valve (4), the top of the second oil drain valve (4) is fixedly connected to a circular second flange (3), the top of the second flange (3) is fixedly connected to a metal oil sampling pipeline (2), the top of the metal oil sampling pipeline (2) is fixedly connected to a first flange (1), the top of the first flange (1) is fixedly connected to a first oil drain valve (7), and the top of the first oil drain valve (7) is fixedly connected to a fourth flange (11).

2. The oil sampling valve device according to claim 1, characterized in that: The metal oil sampling pipeline (2) passes through the third flange (10), the fourth flange (11), the second flange (3), and the first flange (1).

3. The oil sampling valve device according to claim 2, characterized in that: The metal oil sampling pipeline (2) passes through the first flange (1) and is engaged with the first oil drain valve (7).

4. The oil sampling valve device according to claim 2, characterized in that: The metal oil sampling pipeline (2) passes through the second flange (3) and is engaged with the second oil drain valve (4).

5. The oil sampling valve device according to claim 1, characterized in that: The oil sampling nozzle (5) passes through the third flange (10) and is engaged with the second oil drain valve (4).

6. The oil sampling valve device according to claim 1, characterized in that: The first oil discharge valve (7) and the second oil discharge valve (4) are composed of an elliptical chamber, and the right side of the chamber is fixedly connected to a circular handle via a steel rod.

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